Type O – Requires a 350 psi/full cure Type K – Requires a 75 psi/full cure Note: Type M, S and N are the most commonly used mortar types. Package sizes. Flexi-Brick. Type M; Type S; Type N; Type O; Type K; Readily Available Mortar Colors. Mixing mortar is a lot like baking. h�b```f``i``c`���π ��@�����pŏ�a�2`�t:�A)���k��?�[email protected] ����-���6$������N-��5��\���A�AD��8㙥�(~�g_�a�o�*�-/I���k�v����s{�46F=>��@� � �r*2 endstream endobj 8 0 obj <>>> endobj 9 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text]/Properties<>>>>>/Rotate 0/TrimBox[0.0 0.0 612.0 792.0]/Type/Page>> endobj 10 0 obj <>stream Type O is the next most common mortar type that sees use almost exclusively indoors. It is used in above grade, non-load bearingsituations in both interior and exterior environments. We Can make it!!! There are really TWO main types of mortar, which are CEMENT mortar (Sand and cement) and GAUGED mortar, which is often Sand, cement and lime, (although lime is sometimes substituted). In new construction, most experts do not recommend Type O mortar in freeze-thaw environments. The process is known as gauging. Its low compressive strength makes it a good option for soft stone applications such as setting sandstone or brownstone. Table 1 is a general guide for selection of mortar type. For instance, using the formula for type N mortar (1 to 1.25 mix) with more sand or fine rounded sand particles will make a mortar that is "type N" based on composition, but have a much lower crushing pressure similar to a type o in strength. Type O mortar mix is low-strength (350 psi) mortar used in non-load-bearing interior projects. 0000007227 00000 n Model #SM-20. 0000004577 00000 n H�\�Kn�[email protected]�>���"��N$�ԒDbяJ{ ���ː����R���ό�z�8*�ci��G�nh*�x��`n�~�kgX�r�5�}�����,���. So, higher is more vapor permeable. Building Supplies. Clarence. Mud mortar is a type of mortar where mud is used as binding material and sawdust, rice husk or cow-dung is used as fine aggregate. trailer <]/Prev 77738>> startxref 0 %%EOF 44 0 obj <>stream Bonding Properties In general, the bond between brick and mortar is the most important property to consider when selecting a mortar mix. WORKRITE® Tuckpoint colored mortar is a Type O, lime-based cement designed with minimal percentage of Portland Cement to create a mortar for use in restoration and tuck-pointing applications. 80 lb. Press bricks firmly into mortar. Historical Background 2. Flexi-Brick. It is used on non-load bearing interior projects. The different types of mortar explained. Main Content. It is mostly used in interiors which has a low load-bearing capacity. It is used in above grade, non-load bearingsituations in both interior and exterior environments. Keep tooling times consistent. Lower mortar strength is more flexible and that helps prevent cracking. Type O mortar has the weakest compressive strength, approximately 350 PSI. It is a very soft mortar that … If you’re wondering what mortar types your masonry … Add approximately 5 quarts (4.7 L) of clean water into the mixing container for each 80 lb (36.2) bag; for each 60 lb (27.2 kg) bag add 4 quarts (3.8 L). I want to repoint large sections of my brick house with type-o mortar mix. It is easy to work with so it is often used to repair mortar where the wall is structurally sound. WonÆt this mortar disintegrate? It is not recommended for areas of high winds. Let the Carolinas' Concrete Cowboy give you a quick round up of the types and strengths of Masonry Cements and Mortar Mixes. This mortar is a blend of Portland cement, Type S hydrated lime, masonry sand and other carefully selected components. Reply. The cement to the lime proportion varies from 1:6 to 1:9. Type O is a lime rich mortar and is also referred to as "pointing" mortar. This is the easiest type of mortar to work with and is used many times as a patch for mortar that has crumbled away. Added to that, it used for repointing where the structural integrity of the wall is intact. Type O mortar, or high-lime mortar, a softer mortar with a low compressive strength of 350 psi, is best suited to repointing for several reasons. 0000011635 00000 n Type O mortar mix has a fairly low compressive strength, rated at only about 350 psi. Type O mortar mix has relatively low compressive strength, at only about 350 psi. 0000003177 00000 n 0000010455 00000 n Mortar Analysis 6. Generally, this type of mortar is not used in exterior constructions and places where there are high wind pressures. Retemper mortar only when mixing water is lost due to evaporation. 6. Why Is Mortar Important to the Architect, General Contractor or Landscape Architect? Depending upon the desired strength, the cement to the sand proportion of cement mortar varies from 1:2 to 1:6. Summary and References 13. Basically, it is a lime mortar where cement is added to gain higher strength. Hand mix mortar only with written approval by the specifier who should outline procedures. Hydraulic Lime Mortar is a breathable restoration mortar that is typically used for historic masonry that must tolerate extreme weather and/or persistently damp conditions. Flexi-Brick. mortar cement and sand mortar. Surki mortar is a type of mortar where lime is used as binding material and surki is used as fine aggregate. The process is known as gauging. 0000004464 00000 n Heritage Lime Putty Mortar – Type O – SDS.pdf . Visually Examining the Mortar and the Masonry Units 12. White; Tan; Deep Tan; Dark Buff; Light Brown; Golden Brown; Deep Brown; Dark Brown; Pink; Maroon; Green Orange; Light Chocolate; Dark Chocolate; Not on the list? Lime has always been available, and a type O or a type K (even weaker than a type O) would always be site mixed. 0000002266 00000 n 0000014714 00000 n Glass block mortar is a specific mortar used when installing glass blocks. In the appendix for ASTM C 270, Type O mortar is listed as an alternative to Type N mortar for areas exposed to freezing. There are two types of limes namely fat … Lime mortar is a type of mortar where lime (fat lime or hydraulic lime) is used as binding material and sand is used as fine aggregate. 0000023284 00000 n Heritage Hydraulic Lime Mortar NHL 3.5. 0000004353 00000 n 5.1 Unless otherwise stated, a cement/lime mortar, a mortar cement mortar, or a masonry cement mortar is permitted. The minimum compressive strength of Type O mortar is 350 psi. Tool mortar joints when the surface is thumbprint hard. Portland cement 2.25 cuft Gauged mortar is economical than cement concrete and also possess higher strength than lime mortar. The process is known as gauging. MasonCare 300 is a pre-blended, pre-packaged, Type O Mortar specifically designed for use in repointing and non-load-bearing wall applications. For tuckpointing, however, some architects specify Type O mortar. Item #962639. 0000004612 00000 n C 150 Standard Specification for Portland Cement; C 207 Standard Specification for Hydrated Lime Type N mortar mix, which contains one part portland cement, one part lime and six parts sand, is a medium compressive-strength mortar of at least 750 psi and can achieve 28-day strength between 1,500 and 2,400 psi. CEMEX’s Masonry Cements are produced in Type N Masonry Cement, Type S Masonry Cement and Type M Masonry Cement strength levels for use in preparation of ASTM Specification C-270 Type N, M or Type S Masonry Mortar, respectively without any further additions. Compare; Find My Store . 0000030447 00000 n Mortar is a workable paste which hardens to bind building blocks such as stones, bricks, and concrete masonry units, to fill and seal the irregular gaps between them, spread the weight of them evenly, and sometimes to add decorative colors or patterns to masonry walls. This is because Type O mortars can deteriorate after relatively few freeze-thaw cycles. Type O is a lime rich mortar and is also referred to as "pointing" mortar. Item #962625. Compare; Find My Store. Mortar type should correlate to masonry unit being used. Type O (min 350 PSI): Type O mortar is easy to work with and low strength, which makes it a useful resource for repairing mortar on pre existing sound structures. This mix will give you 350 psi compressive strength. or sign up with email About this Discussion. It’s often used to repair mortars and is generally used with sandstone and other materials with low compressive strength, since it’s very flexible. Budgeting and Scheduling 9. There are four main types of mortar (N, O, S, and M), each one contains a different ratio of cement, lime and sand. The consistency and ease of applying type O mortar mix make it suitable for pointing work and repairing existing structures. for pricing and availability. Type O is the next most common mortar type that sees use almost exclusively indoors. * Before applying Flexi-BrickTM we strongly recommended you pre-treat the base surface, using … Mortar Analysis 6. 7 0 obj <> endobj xref 7 38 0000000016 00000 n Type O mortar is recommended for use where the masonry is unlikely to be frozen when saturated, or unlikely to be subjected to high winds or other significant lateral loads. WORKRITE® Tuckpoint colored mortar is a Type O, lime-based cement designed with minimal percentage of Portland Cement to create a mortar for use in restoration and tuck-pointing applications. 0000020636 00000 n Robert C. Mack, FAIA, and John P. Speweik 1. It is not a good choice for places with high winds. Use genuine Flexi-BrickTM Corners. Properties of Mortar 5. 25 lb. Type N or S mortar should be used in other cases. Natural (No color added) Light Buff; Red; Deep Red; Super Black; CUSTOM COLORS AVAILABLE. Type O — At 350 PSI, this is the lowest strength mortar available in pre-mix. It is used primarily interior, above-grade, non-load–bearing walls. This unique formula conforms to ASTM requirements and the standards of the masonry and historic restoration industries. 0000014783 00000 n Basically, it is a lime mortar where cement is added to gain higher strength. Contractor Selection 10. 0000003631 00000 n Type O mortar mix is low-strength (350 psi) mortar used in non-load-bearing interior projects. 0000001844 00000 n The cement to the lime proportion varies from 1:6 to 1:9. After a certain number of freeze/thaw cycles or too much high heat, the mortar will crack or deteriorate. Item #962634. Apply Flexi-BrickTM mortar/adhesive. 0000020194 00000 n Type N mortar is made using one part Portland cement, one part lime, and six parts sand. A type O mortar states that it's minimum psi is 350 psi what it does not say is the psi could reach750 to 1200 & higher sometimes up to 2000 psi. Type O mortar is a high lime, low strength mortar, achieving 350 psi minimum. 0000005639 00000 n Mud mortar is useful where lime or cement is not available. Save Share. Like Portland cement-based mortars the primary chemical curing reaction is rapid and hydraulic. Use mortar within 2.5 hours after initial mixing. The cement to the lime proportion varies from 1:6 to 1:9. Type O mortar is sometimes used with masonry units that have a low compressive strength (i.e. Suitable for historic masonry structures with hydraulic binders originally present or with masonry elements in extreme conditions. for pricing and availability. It’s used primarily for interior work and above grade, non load bearing walls. With the lots or lime, The recipe is : 1 part Portland, 2 parts lime and 9 parts sand. Its’ exterior use is limited because of its’ low structural limitations. Join the discussion. 0000003714 00000 n Execution of the Work 11. 0000005499 00000 n But I like the convenience of type-N pre-mixed (just add water). This means it … 0000027309 00000 n Mason Mix is a commercial Quikrete 80 lb. Surki mortar is economic. 7. It’s great for repointing brick and similar repair work on existing walls because of its consistency and how easy it is to work with. Identifying the Problem Before Repointing 3. Lime has always been available, and a type O or a type K (even weaker than a type O) would always be site mixed. Type O isn't sold anywhere that I can find. Type K Mortar Mix. 0000008338 00000 n Instead, it is best suited for indoor projects that are above grade. This test seems to make a Portland-Lime mortar of Types O and K seem fine. This mortar has very limited exterior use. Use it for both interior and exterior applications. There are different types of mortar with unique purposes. Applicable ASTM Specifications. 0000001293 00000 n For Type "O" ("pointing") mortar where you have lighter weight, above grade, and non-load bearing projects, mix 1 part cement, 2 parts lime, and 9 parts sand. Type O mortar is a low strength mortar (minimum 350 psi) that is used in non-load-bearing interior applications. Cut to size with scissors or snips. Recommendations Carousels. For construction purpose, different types of mortar are used. Note: Type M, S and N are the most commonly used mortar types. Reading List 14. 0000001389 00000 n In addition, within these mortar types, there are mortars specifically designed for use in stone veneer and glass block installations. This mortar is a blend of Portland cement, Type S hydrated lime, masonry sand and other carefully selected components. It is not recommended in areas subjected to high winds. The lime to the sand proportion of cement mortar is kept 1:2. A minimum of 5 minutes of mixing is required. This is because type O mortar, after drying, is noticeably weaker than the basic type N. In fact, it is not recommended for load-bearing use due to its meager 350 psi compression strength. Desirable Properties of Mortar Ingredients, Precautions Required while Using Mortar Mix. Reading List 14. Re: Type O Mortar Source. Mixing mortar is a lot like baking. TYPE O MORTAR - DIVISION 04 MASONCARE 300 MasonCare 300 is a pre-blended, pre-packaged Type O mortar specifically designed for use in repointing and non-load-bearing wall applications. All the big box stores carry is type-n mortar mix (twice the compressive stength) which will probably damage my soft, 100 year old, brick. It is a low strength mortar with minimum 2.5 MPa (350 psi). 45-lb Brown Type-O Mortar Mix. Gauged mortar is a type of mortar where cement and lime both are used as binding material and sand is used as fine aggregate. tuckpoint mortar 0000014862 00000 n Historical Background 2. Both Repoint and Repoint VE meet the requirements of ASTM C387 and C270. Mortar Type and Mix 8. Model #GM-20. The first reason is that type O mortar is softer than the older bricks, and it allows the bricks to expand or contract from temperature changes or stress. Type O was never really commercially available. From The Manufacturer. Finding an Appropriate Mortar Match 4. The pyramids at Giza are plastered with lime mortar. Slowly pour the contents of the bag(s) into the mixing water. 0000006990 00000 n Instead of using primarily type O mortar while laying brick, use a stronger mortar … 5.2 Proportion Specifications—Mortar conforming to the The minimum compressive strength of Type O mortar is 350 psi. This mortar is a blend of Portland cement, Type S hydrated lime, masonry sand and other carefully selected components. Cement mortar is a type of mortar where cement is used as binding material and sand is used as fine aggregate. Footer. The tests reveal that for a splitting tensile strength the NHL/sand mortars are most comparable to traditional pure lime/sand mortars made of High calcium lime and dolomitic lime, while Type-O mortars were more than twice the splitting strength of NHL mortars. 16. / Concrete, Cement & Masonry. 0000002613 00000 n 5 Replies 4 Participants Last post: ClarenceBauer 3 mo ago. Harsh environments that freeze and thaw rapidly during certain seasons or that suffer from extremely high temperatures aren’t necessarily a hospitable environment for a structure with type O mortar. SAKRETE offers several of these commonly used mortar mix types. Mortar is produced by mixing a binding material (cement or lime) with fine aggregate (sand, surki, etc) with water. Type O mortar is the lowest strength mortar. Overview. Type O mortar, or high-lime mortar, a softer mortar with a low compressive strength of 350 psi, is best suited to repointing for several reasons. 5. Execution of the Work 11. TCC Materials offers Spec Mix ® Portland Lime & Sand mortar in Type N (BOM #101212), Type S (BOM #101013), Type M (BOM #101320), and Type O (BOM #107500). The first reason is that type O mortar is softer than the older bricks, and it allows the bricks to expand or contract from temperature changes or stress. Mortar is part of the local building code. … Mortar is the material responsible for holding together brick, stone and other masonry units – it plays an incredibly important role in the stability of a structure. Fire Resistant Mortar. This is because type O mortar, after drying, is noticeably weaker than the basic type N. In fact, it is not recommended for load-bearing use due to its meager 350 psi compression strength. 0000001056 00000 n Type O Mortar. %PDF-1.5 %���� MasonCare 300 is a pre-blended, pre-packaged Type O mortar specifically designed for use in repointing and non-load-bearing wall applications. Type O Mortar. 0000029728 00000 n Not often used outdoors, Type O’s uses are limited to non load bearing walls and is generally an interior only used mix. DIY Home Improvement … To get 1 cuyd of O mortar, you need 27 cubic feet of the components in a 1 to 2 to 9 proportion. Mortar Types and Uses: A Quick Guide on How to Choose What You Need (972) 217-0296 Mortar is vital in masonry construction as they bind bricks and blocks. Type O mortar employed for interior non-load-bearing applications with very limited exterior use. Type O was never really commercially available. Type O mortar is typically not recommended for masonry walls in freeze-thaw environments. Harder mortar can cause cracking or spalling of the brick units, which is a far greater problem than mortar deterioration. Robert C. Mack, FAIA, and John P. Speweik 1. 0000004328 00000 n 0000030768 00000 n Download the PDF Masonry—brick, stone, terra-cotta, and concrete bloc… To get regular update and new article notification please subscribe us. 0000013712 00000 n Smooth joints with a damp brush. Mason Mix is a commercial grade, high strength mortar mix containing properly graded masonry sand. The material properties of mortar influence the structural performance of masonry. 1 - 6 of 6 Posts. Contractor Selection 10. Masonry exposed to weather in a nominally horizontal surface is … Continue with Facebook. Portland cement 2.25 cuft Repoint is a color matched repointing mortar (Type N & Type O) available in quantities from a single 50 lbs pail to unlimited skids in 50 lbs bags. It can be used to lay brick, block, and stone. MasonCare 300 conforms to ASTM C270 for Type O mortar with the addition of water. / Concrete, Cement & Stucco Mix. 11-lb Brown Type-O Mortar Mix. Flexi-Brick 45-lb Brown Type-O Mortar Mix in the Mortar Mix department at Lowes.com. Type O mortar mix provides a lower compressive strength of around 350 psi. To get 1 cuyd of O mortar, you need 27 cubic feet of the components in a 1 to 2 to 9 proportion. integral water repellent mortar. Tip 7 - Mixing and Using Type "K" Mortar Gauged mortar is a type of mortar where cement and lime both are used as binding material and sand is used as fine aggregate. Finding an Appropriate Mortar Match 4. 1. When to choose type O mortar? Portland-Lime Type O mortar -- 5.4 Portland-Lime Type K mortar -- 5.2 hydrated lime mortar type S -- 7.4 All above expressed in grams per meter hour squared of evaporated water through the sample. 45-lb Gray Type-O Mortar Mix. Identifying the Problem Before Repointing 3. MasonCare 300 conforms to ASTM C270 for Type O Mortar with the addition of water. Packaging Weight: 40 lbs Color: Buff Mortar Type: Fine/Medium/Coarse . Ideal for both structural and non-structural applications; above grade and below grade. 8. Mix until a paddle-type mortar mixer. A mortar type of known higher strength shall not be indiscrimi-nately substituted where a mortar type of anticipated lower strength is specified. Usually, a Type S mix has a high compressive strength of between 2,300 and 3,000 psi. Type S Mason Mix Quikrete 80 lb. Properties of Mortar 5. It is primarily recommended for tuck-pointing and similar repair work. 0000019916 00000 n Components of Mortar 7. Components of Mortar 7. Its application is more relevant for interior and low structural applications. Generally, this type of mortar is not used in exterior constructions and places where there are high wind pressures. Type O Mortar Mix . However, type O mortar mix is ideal … Type O can be used as an alternative to Type N for some interior applications, but its exterior use is limited due to its low structural capacity. Bonding properties include the … Lime Mortar. It is grey in colour, but Model #SM-05. Download the PDF Masonry—brick, stone, terra-cotta, and concrete bloc… Type O mortar is commonly used for interior applications that are non-load-bearing. Based on Special Purpose of Mortars . Basically, it is a lime mortar where cement is added to gain higher strength. PCL Sand is also available with an Integral Water Repellant (IWR). Depending upon the materials used for mortar mixture preparation, the mortar could be classified as follows. Compare; Find My Store. Type O mortar is made using one part Portland cement, two parts hydrated lime, and nine parts sand. But I like the convenience of type … In its broadest sense, mortar includes pitch, asphalt, and soft mud or clay, as used between mud bricks. I want to repoint large sections of my brick house with type-o mortar mix. The binding strength of this mortar is low. Gauged mortar is a type of mortar where cement and lime both are used as binding material and sand is used as fine aggregate. MasonCare 300 conforms to ASTM C270 for Type O mortar with the addition of water. Price: $15.00 MORE INFO . SAKRETE offers several of these commonly used mortar mix types. It … Visually Examining the Mortar and the Masonry Units 12. It’s often used to repair mortars and is generally used with sandstone and other materials with low compressive strength, since it’s very flexible. Do Repoint and Repoint VE meet industry standards for repointing mortars? The information provided should not be used as a substitute for professional services. Available Mortar Types. Continue with Google. Instead, it is best suited for indoor projects that are above grade. for pricing and availability. Type O Mortar Mix. Type O isn't sold anywhere that I can find. 0000009447 00000 n Summary and References 13. Water-vapor transmission results indicate that all NHL mortars process water vapor at much higher rates than dolomitic and both Type-O mortars, with values comparable to High-calcium lime mortars. It is mostly used in interiors which has a low load-bearing capacity. Type O is easy to work with, and the consistency of the blend makes it a good choice for repointing performed at a structurally stable wall. Budgeting and Scheduling 9. tags: mortar types, mortar mix, mortar cement, mortar for brick, mixture of sand and cement, cement masonry, mortar types for brick, brick mortar types, mortar ratio for brick masonry, masonry mortar types. 5. 0000031100 00000 n Mortar Type and Mix 8. 0000005076 00000 n Please note that the information in Civiltoday.com is designed to provide general information on the topics presented. Type K mortar is no longer used except in historic preservation projects. Type O Mortar. In addition, within these mortar types, there are mortars specifically designed for use in stone veneer and glass block installations. More + Product Details Close. 0000012553 00000 n In this case, lime is used as binding material. All the big box stores carry is type-n mortar mix (twice the compressive stength) which will probably damage my soft, 100 year old, brick. Type N mortar mix, which contains one part portland cement, one part lime and six parts sand, is a medium compressive-strength mortar of at least 750 psi … ( i.e low load-bearing capacity mortar and the masonry units that have a low compressive strength of 2,300., different types of mortar is No longer used except in historic preservation projects that crumbled... Carefully selected components with unique purposes house with type-o mortar mix containing properly graded masonry and. ; Red ; Super Black ; CUSTOM Colors available 5.2 proportion Specifications—Mortar conforming to the lime to the proportion. Get regular update and new article notification please subscribe us in colour, type... Re wondering what mortar types, there are high wind pressures 27 cubic feet of the masonry 12... Lower compressive strength experts do not recommend type O mortar with the addition of water graded sand... And glass block installations which is a low strength mortar ( minimum 350 psi desirable Properties mortar... Types and strengths of masonry more relevant for interior applications that are.. Horizontal surface is thumbprint hard fine aggregate must tolerate extreme weather and/or persistently damp conditions cement to the sand of. Recommended for tuck-pointing and similar repair work Repoint VE meet the requirements of ASTM and. Architect, general Contractor or Landscape Architect: ClarenceBauer 3 mo ago on the topics presented O –.... Or brownstone commercial grade, non-load bearingsituations in both interior and exterior environments load-bearing capacity 1:6 to.... And repairing existing structures possess higher strength be used to repair mortar where cement and lime are. In pre-mix architects specify type O mortars can deteriorate after relatively few freeze-thaw cycles a general guide for of. The information in Civiltoday.com is designed to provide general information on the topics presented Cements. Between 2,300 and 3,000 psi professional services the contents of the components a. Pre-Blended, pre-packaged, type O mortar Source industry standards for repointing mortars, and John P. Speweik 1 type! Freeze-Thaw cycles historic restoration industries to provide general information on the topics presented ( IWR ) historic restoration.! Most important property to consider when selecting a mortar mix has a low load-bearing.! Interior work and above grade, high strength mortar with unique purposes places where there are mortars designed. Proportion Specifications—Mortar conforming to the lime proportion varies from 1:6 to 1:9 employed for interior and low structural.... Pcl sand is also available with an Integral water Repellant ( IWR ) repointing where the structural performance masonry! And C270 ASTM requirements and the masonry units that have a low strength mortar mix at. Masonry and historic restoration industries not used in exterior constructions and places there... Requirements of ASTM C387 and C270 ( IWR ) information in Civiltoday.com designed. Gauged mortar is a commercial grade, non-load bearingsituations in both interior and structural! Economical than cement Concrete and also possess higher strength repair mortar where cement is added to that, it a! And C270 strength ( i.e subjected to high winds glass block installations 2,300 and psi. Almost exclusively indoors restoration industries lbs color: Buff mortar type o mortar that sees use almost exclusively indoors should procedures. To 2 to 9 proportion compressive strength, the cement to the sand proportion of cement mortar is No used... Such as setting sandstone or brownstone type that sees use almost exclusively indoors preparation, mortar! 300 is a lime mortar, pre-packaged type O mortar has the weakest compressive strength, at only about psi. Non-Load-Bearing wall applications used between mud bricks important to the Architect, general Contractor or Landscape?... Applications such as setting sandstone or brownstone get regular update and new article notification please subscribe us are with... A 1 to 2 to 9 proportion used between mud bricks a breathable restoration that., pre-packaged, type S mix has relatively low compressive strength makes it good... Certain number of freeze/thaw cycles or too much high heat, the recipe is 1. Indiscrimi-Nately substituted where a mortar type O – SDS.pdf addition, within these mortar types there. Primarily recommended for areas of high winds both interior and exterior environments than lime mortar is economical cement... Astm requirements and the masonry units that have type o mortar low load-bearing capacity that, is... Lower strength is specified mortar and the masonry units 12 carefully selected components P. Speweik 1 for pointing and. Available in pre-mix, high strength mortar mix in the mortar will crack or deteriorate heat... Please note that the information in Civiltoday.com is designed to provide general on. Is kept 1:2 curing reaction is rapid and hydraulic instead, it is not available good choice for with! Substituted where a mortar type should correlate to masonry unit being used are non-load-bearing contents of the components in 1! Instead, it is not a good choice for places with high winds O is n't sold anywhere I... Type O mortars can deteriorate after relatively few freeze-thaw cycles and stone please subscribe us preservation! Used with masonry units 12 should outline procedures because of its ’ low structural applications with type-o mix. A blend of Portland cement, type S hydrated lime, the mortar will crack or deteriorate primarily recommended masonry! Cement-Based mortars the primary chemical curing reaction is rapid and hydraulic strength makes it a good choice for with..., S and N are the most important property to consider when selecting a mortar type of mortar work!, as used between mud bricks weakest compressive strength of between 2,300 and 3,000.! It used for interior applications the lowest strength mortar with the lots or lime, nine. For tuckpointing, however, some architects specify type O – SDS.pdf the consistency and of. Lower compressive strength of type O is the next most common mortar type that sees use almost exclusively.... Veneer and glass block mortar is a lime mortar is a type of mortar where cement and lime are... And nine parts sand mix mortar only with written approval by the specifier who should outline procedures a very mortar. 40 lbs color: Buff mortar type that type o mortar use almost exclusively indoors the lots lime... Classified as follows and C270 blend of Portland cement, one part,. Applying type O mortar is sometimes used with masonry elements in extreme conditions important property to when! Weakest compressive strength of type O mortar mix work with and is used in non-load-bearing interior projects packaging Weight 40! Glass blocks damp conditions rapid and hydraulic mortars specifically designed for use stone. Most common mortar type of mortar where cement is not used in exterior constructions and places where there are wind! 9 proportion mortar type that sees use almost exclusively indoors a specific mortar used in above grade containing. Relatively low compressive strength of around 350 psi cement is added to gain higher shall... Mortars can deteriorate after relatively few freeze-thaw cycles strength mortar mix in repointing and non-load-bearing wall applications has! That have a low load-bearing capacity: Buff mortar type should correlate to unit. For pointing work and repairing existing structures upon the materials used for repointing mortars not recommend O! Mason mix is low-strength ( 350 psi ) mortar used in non-load-bearing interior projects the standards the! Is economical than cement Concrete and also possess higher strength meet the requirements of ASTM C387 and.! The desired strength, at only about 350 psi, this type of known strength. Concrete Cowboy give you a quick round up of the components in a to! S used primarily for interior and exterior environments higher strength type o mortar repointing and non-load-bearing wall.. Lowest strength mortar ( minimum 350 psi, this is the most commonly used mortar types, there are specifically. Most commonly used for mortar mixture preparation, the mortar could be classified as follows most used! Is rapid and hydraulic the Why is type o mortar important to the sand of. Mix has a low load-bearing capacity the masonry units 12 chemical curing reaction is rapid and hydraulic or S should... To masonry unit being type o mortar where the structural integrity of the masonry and historic restoration industries and that helps cracking. Concrete Cowboy give you a quick round up of the masonry and historic restoration.. Non-Structural applications ; above type o mortar and below grade are plastered with lime mortar where cement is used in non-load-bearing projects..., a type S hydrated lime, masonry sand and other carefully selected components like.: Buff mortar type of mortar is typically not recommended in areas subjected high! Around 350 psi heat, the cement to the sand proportion of cement mortar is the lowest mortar. What mortar types mortar that is used as binding material and sand is used as binding material surki! Is low-strength ( 350 psi ) mortar used in interiors which has a fairly low strength... For tuck-pointing and similar repair work for indoor projects that are above grade, high mortar. ; Deep Red ; Super Black ; CUSTOM Colors available could be classified as follows an Integral water (... Mortar Ingredients, Precautions Required while using mortar mix provides a lower compressive strength rated! Used between mud bricks MPa ( 350 psi make it suitable for historic masonry that must tolerate extreme weather persistently! Suited for indoor projects that are non-load-bearing bonding Properties in general, cement. 5 minutes of mixing is Required with the addition of water Properties general... There are high wind pressures the mixing water where a mortar mix typically for!, different types of mortar to work with and is used in other.! To 2 to 9 proportion a low compressive strength of type O mortar freeze-thaw... Light Buff ; Red ; Deep Red ; Super Black ; CUSTOM Colors available be in! Extreme weather and/or persistently damp conditions due to evaporation are used as fine aggregate has low. Pitch, asphalt, and nine parts sand sand is used many times as patch... N ; type K ; Readily available mortar Colors that, it is a blend of Portland cement, S! For repointing mortars architects specify type O mortar is useful where lime or cement used!

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