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_ Modified ASTM C- 90 <br /> for Architectural Block <br /> Architectural Concrete Masonry . Units : in Florida . ' <br /> Florida Concrete •and Products Association Per ASTM C-90 . <br /> This guideline spe4cation hos been developed by the. Flodda Concrete and Products Assodahoo as a recommended standard for Architectural Concrete Masonry <br />' . <br /> Units in Florida: <br /> � . 1 . SCOPE _ - <br /> 1 :1 ► This specification covers *hollow and solid architectural masonry units. There are .thiee classes of Architectural Unit • ( 1 ) D <br /> E M A C O <br /> normal weight, (2) medium weight and (3) lightweight. <br /> . 1 .2 ► 2 Concrete masonry units covered by this specdication are made from lightweight or normal weight oggregates ora B L O C K <br /> combination of both. <br /> • Y T A R M A C <br /> 2 REFERENCE DOCUMENTS <br /> 2. 1 ► ASTM Standards . <br /> C33 Specification for Concrete Aggregates . <br /> C90 Specificdtion for load-Bearing CMU's <br /> C140 Sampling and Testing Concrete Masonry Units <br /> C150 Specification for Portland Cement <br /> (210 Specification for Mortar. for Unit Masonry <br /> C331 Specification for lightweight Aggregates for Concrete Masonry Units <br /> E514.90 Test Method for Water Penetration and leakage Through Masonry - <br /> (595 Specification for Blended Hydraulic Cements . <br /> (IIB Specification for fly Ash and Raw or Calcined Natural Pozzolan for use as mineral Admixture in Portland Cement <br /> Concrete . . <br /> C989 Specifications for Ground Blast Furnace Slag for use .irt Portland Cement Concrete <br /> 3 CLASSIFICATION <br /> 3. 1 ► Types •. There is one type of Architectural Concrete Mosonry Unit. It described as exhibiting higher strength, greater <br /> density, lowetpermeability, and greater ability to resist efflorescence thawregular masonry units; <br /> 3 .2 ! . All architectural concrete masonry units covered by this specification will be manufadured to nonmoisture controlled ctBetjp <br /> having a possible moisture content at time of use...,exceeding .45% of total obsarption (average of three units) thereby <br /> requiring the use of control joints as shown in Table I % . <br /> Phone: 1 . 800 . 4 • TARMAC url: www.tormacomerica.com DEMACO BLOCK—THE. ARCHITECTURAL BLOCK AUTHORITY <br /> 2/98 <br />