掺特细砂C30超高层泵送混凝土的制备及工程应用
发布时间:2018-08-28 06:32
【摘要】:结合工程实际,通过采用特细砂替代部分机制砂,调整细骨料的级配曲线,使用Ⅱ级风选粉煤灰、S95级磨细矿粉,以及高性能外加剂,在低胶凝材料用量的条件下,配制出大流动性、高保坍C30超高层泵送混凝土。经过原材料选择、工作性能评价、抗压强度测试等方面的研究,确定了掺特细砂的C30超高层泵送混凝土配合比。结果表明,以特细砂替代部分机制砂能够改善混凝土性能,满足工程施工要求,具有良好的经济效益和推广意义。
[Abstract]:Combined with the engineering practice, by replacing some machined sand with ultra-fine sand, adjusting the gradation curve of fine aggregate, using the grade 鈪,
本文编号:2208571
[Abstract]:Combined with the engineering practice, by replacing some machined sand with ultra-fine sand, adjusting the gradation curve of fine aggregate, using the grade 鈪,
本文编号:2208571
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