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October 22, 2020#

concrete masonry unit specifications

(1) BASF Rheopel Plus Series, ACM Rainbloc, WR GraceDry Block II, or equal.. 1.1 This specification covers hollow and solid (see 5.3 and 5.4) concrete masonry units made from hydraulic cement, water, and mineral aggregates with or without the inclusion of other materials.There are three classes of concrete masonry units: Normal Weight, Medium Weight, and Lightweight. To view a color chart for this product, click here. As the density of the unit increases, the unit’s weight increases. There are 3 density classifications for CMU; Lightweight (less than 105 lbs./cf. Consult with local Representative for manufacturing capabilities of specific products, shapes, colors, and sizes.). Phone: 303-292-2345 c. Certification: Water Repellant Admixture: Material: Pre-blended factory mix of Portland cement, hydrated lime, and fine sand aggregate mixtures. ASTM C140/C140M Standard Test Method for Sampling and Testing Concrete Masonry Units. Block Admixture: An integral liquid polymeric admixture mixed with concrete during production of concrete masonry units which cross links and becomes permanently locked into the CMU, bond, beam or CMU lintel to provide resistance to water penetration. 1. 17. Over the years, some Michigan manufacturers chose to inventory only normal-weight units, some have inventoried both normal-weight and medium-weight units, and some have chosen to inventory only medium-weight units. CMUs should be specified to meet ASTM C90, the Standard Specification for Loadbearing Concrete Masonry Units. Fax: 604-596-6914, Copyright © 2019 Basalite® Concrete Products LLC, Basalite Concrete Products, LLC; Corporate Offices, which is located at: 605 Industrial Way ; Dixon, CA 95620-9779; Tel: 707-678-1901. Carson City, NV 89706 Note, when particular features are desired such as higher compressive strength, fire resistance, thermal performance or acoustical performance, these features should be specified separately. MIM makes no representation or warranties, expressed or implied, with respect to the accuracy or suitability of this information. As a result, many manufacturers have either changed or are in the process of changing their everyday inventory over to normal-weight units. Phone: 253-964-5000 Fax: 719-390-5479, 1300 E. Franklin Road Phone: 559-896-0753, 11888 W Linne Rd Normal weight units have an expansion coefficient of about 5 x 10-6/F and the value for lightweight units is about 4 x 10-6/F. Applying the requirements of this specification to products that may be similar in appearance, use, or nature to those covered by this specification may not address all pertinent physical properties necessary to ensure performance or serviceability of the resulting construction in real-world applications under typical exposure environments. Toll-Free: 800-596-3844 Meridian, ID 83642-5902 The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. Many performance attributes of concrete masonry units are indirectly accounted for, or inherently reflected within, the requirements of this specification without direct measurement, assessment, or evaluation. Colorado Springs, CO 80910-3802 Phone: 307-634-4474 Compared to normal-weight units, these medium-weight units offered the mason contractor a lighter weight unit, and offered the designer potentially increased fire ratings and reduced coefficients of thermal expansion, all for a reasonably priced premium compared to normal-weight units. To assist the designer and specifier, the following are suggested guidelines. Applicable Standards: ASTM C144 - Standard Specification for Aggregate for Masonry Mortar. These units are suitable for both loadbearing and nonloadbearing applications. ASTM C140-12 - Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units. Toll-Free: 800-800-1511 These aggregates when mixed with cement and water produce the specific block physical properties inherent to the locally available aggregates. Phone: 707-678-1901 In general, fire resistance ratings with lower density walls provide more fire resistance. Phone: 775-882-9336, 3299 International Place Surrey, BC V3W 1G1 Suppliers should be consulted as to the availability of units having the desired features. This specification covers both hollow and solid units suitable for both loadbearing and non-loadbearing applications. When it comes to block making, the State of Michigan is abundant with normal weight aggregates of sand, gravel, and limestone (ASTM C-33) throughout the state, which when utilized in the concrete block manufacturing process will result in concrete masonry units (CMU’s) that ASTM classifies as normal weight (density of 125 lbs/cf and above). Selma, CA. The TMS 402-11 Building Code Requirements for Masonry Structures shows 4.5 x 10-6/F. Tracy, CA. These units are suitable for both loadbearing and nonloadbearing applications. If you need assistance with this product, please click on the tutorial video or reach out to a Basalite Representative at, Glazed (Thermo-Set Glazing Compound) CMU Descriptor, Masonry Screen Units: (Call Your Local Basalite Plant for Availability), Integral Water Repellant Admixtures for Block and Mortar, Amerimix by Basalite Details (Choose all that apply), Proprietary Products and Systems(Choose One). Products and Services / Standards & Publications / Standards Products, Active Standard ASTM C90 | Developed by Subcommittee: C15.03, Permissions to reprint documents can be acquired throughCopyright Clearance Center   Link to Active (This link will always route to the current Active version of the standard. It appears in the CSI format on the left side with explanatory information in the Notes to Specifier on the right. Masonry Wall Bracing – Restricted Zone Training. If you have any questions regarding this Bulletin and/or block specifications, please feel free to contact the Masonry Institute of Michigan at 248-663-0415. Note 2: When particular features are desired such as surface textures for appearance or bond, finish, color, or particular properties such as density classification, higher compressive strength, fire resistance, thermal performance or acoustical performance, these features should be specified separately by the purchaser. Code, typically, requires STCs of not less than 50. Products manufactured using alternative materials, manufacturing methods, or curing processes not covered by this specification should not be evaluated solely using the requirements in this specification; however, developers of new products can consider the property requirements of this specification as a beginning benchmark for unit performance. Typically Concrete Product Producers manufacture their CMU’s out of locally available aggregates. For many years, expanded slag, a lightweight aggregate (ASTM C-331) has been available in the southeast Michigan area, which offered CMU manufacturers the option of blending the expanded slag  with normal-weight aggregates to produce a medium-weight CMU (density of 105 lbs/cf to less than 125 lbs/cf). When particular features are desired such as surface textures for appearance or bond, finish, color, or particular properties such as density classification, higher compressive strength, fire resistance, thermal performance or acoustical performance, these features should be specified separately by the purchaser. ASTM C90 Standard Specification for Loadbearing Concrete Masonry Units. CMUs should be specified to meet ASTM C90, the Standard Specification for Loadbearing Concrete Masonry Units. Toll-Free: 800-776-6690 For a color chart, click here. Fax: 604-596-6914, 8650 130th Street This information is not to be interpreted as indicating compliance with, or waiver of, any provision of any applicable building code, ordinance, standard or law. Toll Free: 800-473-4080 a. Admixture provided in both the masonry unit and the mortar shall constitute a complete integral water repellent system for exterior above grade walls. Fax: 253-964-5005, 601 East Lincoln Way Based on the calculation procedure, the sound transmission class (STC) increases with higher density walls. Dixon, CA 95620-9779 When using this Guide Specification, the specifier must b. Mortar Admixture: An integral admixture for use in mortar mix, which cross links and becomes permanently locked into mortar to provide resistance to water penetration. Your local block manufacturer should be consulted as to the availability of CMUs having the desired features.

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