浅析原、辅材料质量性能差异对预拌砼浇筑的影响及调整措施

来源 :2013中国商品混凝土可持续发展论坛暨第十届全国商品混凝土技术与管理交流大会、2013中国商品混凝土年会 | 被引量 : 0次 | 上传用户:qwertyuiopgfdsah
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本文介绍了某工程地下室超厚大体积混凝土基础筏板与墙顶板在浇筑过程中因为原、辅材料的质量差异出现较大的波动,从而使混凝土的工作性能、耐久性发生了较大的变化;本文通过封样不同生产日期的原材料进行生产还原试验与配合比调整优化试验,找出了在特定情况下,即在无法避免使用同品种大差异原、辅材料时,为确保浇筑混凝土符合设计要求而采取的行之有效的配合比调整方法和必要措施.
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027工程筏板式大体积钢筋混凝土基础,混凝土等级高,施工方量多、浇筑厚度大、质量要求严,浇筑时间恰逢高温季节,为了保证大体积混凝土基础底板顺利浇筑,针对工程特点,商品混凝土供需双方高度重视施工、生产技术与质量,根据以往的成功经验,认真策划,加强细节管理,重视过程控制,保障供应,并制定充分的预防措施和应急办法,确保基础底板浇筑目标的实现.