| 摘要 |
PURPOSE:To improve the segregation resistance by incorporating a cellulosic segregation reducing agent with a part replaced by a fibrous clay mineral as the admixture. CONSTITUTION:A part of a cellulosic water-soluble polymer such as methyl cellulose is replaced by a fibrous clay mineral such as sepiolite, attapulgite and palygorskite to prepare a segregation reducing agent. The specified amts. of the segregation reducing agent and high-performance AE water reducing agent are admixed with a concrete material consisting of cement, fine aggregate, coarse aggregate, water, etc., to obtain an aerial concrete excellent in fluidity and applicability without deteriotating the segregation resistance and excellent in freezing and thawing resistance. |
