1、Designation: C869/C869M 11Standard 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 case of revision, t
2、he 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 foam for use in the p
3、roduc-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 test specimens ar
4、e 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 equivalents; therefore, e
5、achsystem 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 Produc-ing Cellular Concrete Using Preformed Foam3. Performance Requiremen
6、ts3.1 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 specimens, and themethod
7、 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 Aggregates and is the direct responsibility of SubcommitteeC09.23 on Chemical Admixtur
8、es.Current edition approved July 1, 2011. Published August 2011. Originallyapproved in 1977. Last previous edition approved in 2006 as C86991 (2006). DOI:10.1520/C0869_C0869M-11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org.
9、For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.TABLE 1 Physical RequirementsProperty RequirementDensityThe density shall satisfy either ofthe following:Density after pumping (see Test MethodC796)640 6 50 kg/m340 6 3 lb/ft3Oven dry
10、 densityA(see Test Method C796)For Type I cement 4906 40 kg/m330.4 6 2.5 lb/ft3For Type III cement 4706 40 kg/m330 6 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
11、 % by volumeLoss of Air During Pumping(see Test MethodC796), maxB4.5 % by volumeAFor this comparison, the calculated 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 density 5Wc1 0.2 Wc!Vbatch, where Wc=
12、 weight ofcement; and Vbatch= volume of batch.For example, using the test batch specified in Test Method C796 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/
13、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.1*A Summary of Changes section a
14、ppears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.SUMMARY OF CHANGESCommittee C09 has identified the location of selected changes to this specification since the last issue,C86991 (2006), that may impa
15、ct the use of this specification. (Approved July 1, 2011)(1) Revised the standard as a dual units specification andreversed the order of 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 mentione
16、din this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and
17、must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of
18、theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C
19、700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).C869/C869M 112
