石灰石粉取代矿物掺合料对混凝土性能的影响研究  

Study on the effect of limestone powder replacing mineral admixture on concrete properties

作　　者：高中辉 王根立 卢晓磊[3] Gao Zhonghui;Wang Genli;Lu Xiaolei(Shandong Road and Bridge Group Technology Development Co.,Ltd.,Jinan 250200,China;Shandong Provincial Highway and Bridge Construction Group Co.,Ltd.,Jinan 250013,China;Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials,University of Jinan,Jinan 250022,China)

机构地区：[1]山东省路桥集团科技发展有限公司,山东济南250200 [2]山东省公路桥梁建设集团有限公司,山东济南250013 [3]济南大学山东省建筑材料制备与测试技术重点实验室,山东济南250022

出　　处：《山西建筑》2023年第5期106-110,共5页Shanxi Architecture

基　　金：山东省自然科学基金项目(ZR201911170118)。

摘　　要：采用石灰石粉分别部分取代混凝土原材料粉煤灰和矿粉,探究其对混凝土流动性和力学性能影响。结果表明当石灰石粉取代粉煤灰的量为15%时,对C30和C40混凝土流动性的影响规律是一致的。而当石灰石粉取代矿粉时,对C30和C40混凝土的坍落度影响有差异。当石灰石粉取代粉煤灰时,C30混凝土28 d的抗压强度均高于空白组,而对于C40混凝土,石灰石粉的最佳取代量为15%时;当石灰石粉取代矿粉时,对于C30和C40混凝土石灰石粉的取代量均为30%。In this paper, limestone powder is used to partially replace fly ash and granulated blast furnace slag powder, which are the raw materials of concrete, to explore their effects on the workability and mechanical properties of concrete. The results indicate that when the amount of limestone powder replacing fly ash is 15%, the influence on the workability of C30 and C40 concrete is consistent. However, when limestone powder replaces granulated blast furnace slag powder, the impact on the slump of C30 and C40 concrete is different. When limestone powder replaces fly ash, the 28 d compressive strength of C30 concrete is higher than that of the blank group, while for C40 concrete, the best replacement amount of limestone powder is 15%;when limestone powder replaces granulated blast furnace slag powder, the replacement amount of C30 and C40 concrete limestone powder is 30%.

关 键 词：石灰石粉 矿物掺合料 混凝土 工作性 力学性能 

分 类 号：TU528[建筑科学—建筑技术科学]