1、Designation: C869/C869M 11 (Reapproved 2016)Standard Specification forFoaming Agents Used in Making Preformed Foam forCellular Concrete1This standard is issued under the fixed designation C869/C869M; the number immediately following the designation indicates the yearof original adoption or, in the c
2、ase of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers foaming agents specificallyformulated for making preformed foa
3、m for use in the produc-tion of cellular concrete.1.2 The function of this specification is to provide the meansfor evaluating the performance of a specific foaming agent.This is accomplished by using the foaming agent in making astandard cellular concrete test batch (see Test Method C796)from which
4、 test specimens are cast. Then, significant propertiesof the concrete are determined by tests and compared with therequirements of Section 3.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equival
5、ents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.2. Referenced Documents2.1 ASTM Standards:2C796 Test Method for Foaming Agents for Use in ProducingCellular Concrete Using Preformed Foam3. Perfor
6、mance Requirements3.1 The test batch shall conform to the requirements pre-scribed in Table 1.4. Test Methods4.1 The foaming agent being tested shall be used in makingthe test specimens required.4.2 For each of the properties listed in Table 1, the testprocedure, the number and type of test specimen
7、s, and themethod of molding, curing, and testing shall be as described inTest Method C796.5. Keywords5.1 cellular concrete; foaming agents1This specification is under the jurisdiction of ASTM Committee C09 onConcrete and Concrete Aggregatesand is the direct responsibility of SubcommitteeC09.23 on Ch
8、emical Admixtures.Current edition approved July 1, 2016. Published August 2016. Originallyapproved in 1977. Last previous edition approved in 2011 as C869/C869M11.DOI: 10.1520/C0869_C0869M-11R16.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at
9、serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. U
10、nited States1SUMMARY OF CHANGESCommittee C09 has identified the location of selected changes to this specification since the last issue,C86991 (2006), that may impact the use of this specification. (Approved July 1, 2011)(1) Revised the standard as a dual units specification andreversed the order of
11、 units so that SI units appear first.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the ri
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16、 (978) 646-2600; http:/ 1 Physical RequirementsProperty RequirementDensityThe density shall satisfy either ofthe following:Density after pumping (see Test MethodC796)640 50 kg/m3403lb/ft3Oven dry densityA(see Test Method C796)For Type I cement 490 40 kg/m330.4 2.5 lb/ft3For Type III cement 470 40 kg
17、/m330 2.5 lb/ft3Compressive Strength (see Test MethodC796), min1.4 MPa200 psiTensile Splitting Strength (see Test MethodC796), min0.17 MPa25 psiWater Absorption (see Test Method C796),max25 % by volumeLoss of Air During Pumping (see Test MethodC796), maxB4.5 % by volumeAFor this comparison, the calc
18、ulated oven-dry density of the test batch may bedetermined by assuming that the water of hydration is 20 % of the weight of thecement. Then the oven2dry density5Wc1s0.2 WcdVbatch, where Wc= weight of ce-ment; and Vbatch= volume of batch.For example, using the test batch specified in Test Method C796
19、 for Type Icement (w/c = 0.58) and with 45 kg 100 lb of cement, the total mass of the batchis 1.58 x 45 kg 100 lb = 71.1 kg 158 lb. If the wet density, after pumping, ismeasured to be 640 kg/m340 lb/ft3, the batch volume is 71.1/640 = 0.111 m3158/40 = 3.95 ft3. The calculated oven-dry density is then 1.2 x 45/0.111 = 486kg/m31.2 x 100/3.95 = 30.4 lb/ft3.BThe loss of air during pumping includes air that is accidently entrapped duringmixing of the concrete.C869/C869M 11 (2016)2
