论文部分内容阅读
一、隔夜的砌筑砂浆还能继续使用吗?施工中当天用不完的砌筑砂浆,能否留到第二天重新拌和后再使用,这个问题需分两种情况说明:1.以水泥为胶凝材料的水泥砂浆和水泥混合砂浆,不允许在第二天重新拌和后继续使用。水泥有初凝和终凝。初凝时间一般不少于45分钟,终凝时间不大于12小时。试验证明,在水泥终凝后再破坏其形态,水泥的强度会大幅度降低,或者不再能成型。
First, the overnight masonry mortar can continue to use it? Construction of the day with the masonry mortar can not be used until the next day to re-mixing after use, this problem needs to be described in two cases: 1. With cement Cement mortar and cement mortar for cementitious materials are not allowed to continue to be used after remixing the next day. Cement has initial setting and final setting. The initial setting time is usually not less than 45 minutes and the final setting time is not more than 12 hours. Tests have shown that after the final coagulation of the cement, its morphology is destroyed and the strength of the cement is greatly reduced or it can no longer be formed.