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- W419044003 abstract "This paper presents the result of test conducted by means of Air-Meter for the purpose of measuring air content on the concrete produced at both the Ikebukuro and Narihirabashi Plants of our company.(1) Air content per cubic meter in case the quality and quantity of AEA, cement, aggregates used are maintained constant:The concrete tested was these manufactured at our plants during one year from Oct. 1952 to Sept. 1953. Vinsol. Resin used 0.75% of cement, and cement used more than 300kg for the concrete per cubic meter. Fine aggregates used are of same province and nearly 2.2 fineness modulus, while the maximum size of coarse aggregates which have nearly 9.8 of fineness modulus, is 25mm. Also distributing state of air was investigated for three different slumps ranging from 0-10, 10-20 and above 20 without considering of temperature.(2) Variation of air content for every month when concrete was placed:Of the results of air test made from Jan. to Sept. 1953 without reference to ratio of fine and coarse aggregates, taken into consideration was a concrete containing 250kg of cement per cubic meter. The results was that 47.9% of concrete contains 4+0.5% of air, 77.6% of concrete 4+1.5% of air and 92% of concrete, 4+1.5% of air as given in Table 6.From the above, several problems such as variation of air content for different fineness of fine aggregates, selection of sample for air test and possibility of adding AEA into paste were investigated." @default.
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- W419044003 date "1954-01-01" @default.
- W419044003 modified "2023-10-18" @default.
- W419044003 title "On The air content contained in the air entrained ready mixed concrete" @default.
- W419044003 doi "https://doi.org/10.2472/jsms1952.3.118" @default.
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