抄録
“The JSMS Tentative Specification for the Chemical Admixtures for Structural Concrete” was drafted in 1968 by the Committee on the Chemical Admixtures for Concrete, Japan Society of Materials Science, and has since been put into practice. It was in conformity with this Tentative Specification that tests were carried out of thirty-five kinds of water-reducing agents generally on the market throughout Japan including both of accelerating sort and of retarding one. Double objects were intended in these tests, to examine the efficacy of these agents on one hand, and on the other to collect technical data for deliberation of possible requirement in future for revision of the“Tentative Specification”currently in practice.
