【摘要】 本文针对施工方都是初次使用预拌混凝土的特点,使用42.5R水泥配制中低强度粉煤灰泵送混凝土,如何从原材料、配合比、施工工艺、天气等因素入手,进行一系列的试验,找出了影响板面塑性收缩裂缝的主要因素。更多还原

【Abstract】 As all the constructors use the ready-mixed concrete for the first time,we make the low and medium intensity fly ash pump concrete using the 42.5R cement,we studied a series of experiments on the factors of the raw materials,mixture ratio,construction technology and the weather,we have found the main factors influnced on the board shrinking crack.更多还原