流動化コンクリートの実験的研究

概要

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Flowing concrete was produced by adding some superplasticizers and their properties were examined experimentally. The results obtained are as follows. (1) The most suitable sand percentage in flowing concrete can be approximately determined from the amount of slump. (2) There is such trend that the flowing properties improve with increasing unit amount of cement. It is desirable that concrete contains more than 420 kg/m^3 of fine particles of less than 0.3 mm size. (3) The flowing property and slump loss of flowing concrete vary dep6nding upon the temperature and timing of the addition of superplasticizers. (4) The compressive strength develops up to three years in the same trend as in the case of low slump concrete. (5) The relationship between compressive strength and tensile one or static modulus of elasticity is the same as that of conventional concrete. (6) The drying shrinkage and the durability to freezing and thawing are the same as those of low slump concrete. Also, several examples of job site application of the flowing concrete were given along with the mix proportion used and the reason of adopting the present method.
社団法人日本材料学会の論文
1980-03-15