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随着工程建设的快速发展,粉煤灰供不应求、真假不一,为此通过试验研究花岗岩磨细石粉取代粉煤灰应用于预拌砂浆中。根据国标《用于水泥与混凝土中的粉煤灰》检验花岗岩磨细石粉各项物理性能指标,可以满足Ⅱ级粉煤灰部分物理性能指标要求。通过试配不同强度等级的预拌抹灰砂浆研究其拌合物及力学性能,表明花岗岩磨细石粉完全可以取代粉煤灰应用于预拌砂浆中且可以降低成本。
With the rapid development of engineering construction, the supply of fly ash is in short supply, and the true and the false are different. Therefore, the granite grinding stone powder is substituted for the fly ash to be used in the ready-mixed mortar. According to the national standard “for fly ash in cement and concrete” to test various physical properties of granite fine stone powder, to meet the Ⅱ grade fly ash part of the physical performance requirements. The properties of the mixture and the mechanical properties of the pre-mixed plastering mortar with different strength grades were tested. The results showed that granite fine powder can replace the fly ash in the ready-mixed mortar and reduce the cost.