| 摘要 |
PURPOSE:To obtain a concrete compsn. suitable as a jointing concrete for reverse application method of concrete. CONSTITUTION:Into a concrete comprising water, cement and aggregate, a tackfier by <=0.2wt.% of water and a proper amt. of expanding agent are added. Moreover, the amt. of powder comprising the fine aggregate and cement in the concrete is made more than that in a concrete of usual compounding proportion. |
