1、Designation:C 1209 05e1Standard Terminology ofConcrete Masonry Units and Related Units1This standard is issued under the fixed designation C 1209;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in p
2、arentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.e1NOTEChanges were made editorially in April 2005.1.Scope*1.1 This terminology contains terms,definitions of terms,nomenclature,and explanations of abbreviation
3、s,acronyms,and symbols specific to concrete masonry units and relatedunits.1.2 The definitions and definitions of terms in this terminol-ogy pertain to Specifications C 55,C 73,C 90,C 129,C 139,C 744,and C 1319 and Test Methods C 140,C 426,C 1006,and C 1262.2.Referenced Documents2.1 ASTM Standards:2
4、C 55 Specification for Concrete BrickC 73 Specification for Calcium Silicate Brick(Sand-LimeBrick)C 90 Specification for Loadbearing Concrete MasonryUnitsC 129 Specification for Nonloadbearing Concrete MasonryUnitsC 139 Specification for Concrete Masonry Units for Con-struction of Catch Basins and M
5、anholesC 140 Test Methods for Sampling and Testing ConcreteMasonry Units and Related UnitsC 426 Test Method for Linear Drying Shrinkage of Con-crete Masonry UnitsC 744 Specification for Prefaced Concrete and CalciumSilicate Masonry UnitsC 1006 Test Method for Splitting Tensile Strength of Ma-sonry U
6、nitsC 1262 Test Method for Evaluating the Freeze-Thaw Dura-bility of Manufactured Concrete Masonry Units and Re-lated Concrete UnitsC 1319 Specification for Concrete Grid Paving Units3.Terminology3.1 Definitions of Terms Specific to This Standard:absorptiondifference in the amount of water contained
7、within a concrete masonry unit or related unit between asaturated and oven-dry condition in accordance with therequirements of Test Methods C 140.It is expressed asweight of water per volume of concrete.calcium-silicate brick,na pressed and subsequently auto-claved unit that consists of sand and lim
8、e,with or withoutthe inclusion of other materials.concrete brick,na concrete masonry unit made fromportland cement,water,and suitable aggregates,with orwithout the inclusion of other materials.See SpecificationC 55.coupon,na solid specimen,rectangular in any cross-section,that is saw-cut from a conc
9、rete masonry unit or related unitfor the purpose of testing,and whose properties are consid-ered representative of the whole unit.dry-cast,adjmanufacturing concrete products using lowfrequency,high amplitude vibration to consolidate concreteof stiff or extremely dry consistency in a form.drying shri
10、nkage,nin this test method,the change in lineardimension of the test specimen due to drying from asaturated condition to an equilibrium weight and lengthunder specified accelerated drying conditions.C 426lightweight concrete masonry unitunit whose oven-drydensity is less than 105 lb/ft3(1680 kg/m3).
11、lotany number of concrete masonry units or related unitsdesignated by the producer of any configuration or dimen-sion manufactured by the producer using the same materials,concrete mix design,manufacturing process,and curingmethod.medium weight concrete masonry unitunit whose oven-dry density is at
12、least 105 lb/ft3(1680 kg/m3)and less than125 lb/ft3(2000 kg/m3).moisture contentamount of water contained within a con-crete masonry unit or related unit at a given time expressedas a percentage of the total amount of water in the unit undersaturated conditions.1This terminology is under the jurisdi
13、ction of ASTM Committee C15 onManufactured Masonry Units and is the direct responsibility of SubcommitteeC15.08 on Terminology.Current edition approved Feb.1,2005.Published April 2005.Originallyapproved in 1992.Last previous edition approved in 2001 as C 120901a.2For referenced ASTM standards,visit
14、the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International,100 Bar
15、r Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.DISCUSSIONMoisture content is calculated as the difference in thereceived weight of the unit and the dry weight of the unit divided by thedifference in the saturated weight of the unit and the dry weight of theunit,multiplied b
16、y 100%.normal weight concrete masonry unitunit whose oven-drydensity is 125 lb/ft3(2000 kg/m3)or greater.sand-lime brick,nSee calcium-silicate brick.SUMMARY OF CHANGESCommittee C15 has identified the location of the following changes to this standard since C 120901 thatimpact the use of this standard.(1)The term“moisture-controlled concrete masonry unit”wasremoved.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin th