李 敏1,潘钢华2,张菁燕2,郭 峰3
炉底渣在预拌砌筑砂浆中的应用研究
李 敏1,潘钢华2,张菁燕2,郭 峰3
摘 要:炉底渣的活性低,在预拌砂浆中使用会产生一系列的问题,如需水量大,收缩大,强度低等。本文在对炉底渣各项性能进行分析的基础上,对炉底渣体积掺量15%和30%的砌筑砂浆进行了实验研究,通过将炉底渣的小部分极细颗粒替代胶凝材料,其余替代中砂,得到了各项性能都满足标准要求的M7.5级炉底渣砌筑砂浆配方。
Abstract: Because of its low activity, the use of bottom slag in ready-mixed mortar can cause a series of problems, such as more water demand, large shrinkage and low intensity. Based on the full analysis of the performances of bottom slag, the properties of masonry mortar with the volume content of 15% and 30% of bottom slag are studied. Through replacing some cementitious material with a small part of fine particles of bottom slag, and the others replacing the medium sand, the formula of M7.5 masonry mortar with bottom slag are gotten, whose performances can meet the requirments of the standards.
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