不同岩性机制砂对混凝土性能的影响  

The Impact of Manufactured Sand with Different Lithology on the Performance of Concrete

作　　者：莫丹 陈嘉文 周奎 戴前天 梅超 MO Dan;CHEN Jiawen;ZHOU Kui;DAI Qiantian;MEI Chao(Zhuhai Construction Quality Supervision&Inspection Station;Zhuhai Chunhe New Material Research Institute Co.,Ltd.)

机构地区：[1]珠海市建设工程质量监测站 [2]珠海春禾新材料研究院有限公司

出　　处：《广东建材》2024年第9期40-43,共4页Guangdong Building Materials

摘　　要：为探究机制砂岩性对混凝土性能的影响,以C40混凝土为基准,研究了石灰石和花岗岩两种机制砂对混凝土力学性能和抗氯离子渗透性能的影响。得出以下结论:石灰石机制砂混凝土抗压强度在机制砂掺量增加的情况下呈现增大的趋势,机制砂掺量对强度提升效果逐渐降低,而花岗岩机制砂的抗压强度则呈现出先增加后减少的变化趋势;随着石灰石机制砂掺量的增加,抗氯离子渗透性能呈现出先升高后降低的趋势,整体抗氯离子渗透性能强于基准组;而随着花岗岩机制砂掺量的增加,抗氯离子渗透性能则先降低后升高,整体抗氯离子渗透性能弱于基准组。In order to explore the impact of manufactured sand lithology on the performance of con‐crete,using C40 concrete as the reference,the effects of limestone and granite manufactured sands on the mechanical properties and chloride ion permeability of concrete were studied.The following conclu‐sions were drawn:The compressive strength of limestone manufactured sand concrete shows an increasing trend with the increase of manufactured sand content,and the effect of manufactured sand content on strength enhancement gradually decreases.In contrast,the compressive strength of granite manufactured sand concrete shows a trend of first increase and then decrease with the increase of manufactured sand content;With the increase of limestone manufactured sand content,the chloride ion permeability shows a trend of first increase and then decrease,and the overall chloride ion permeability is stronger than the baseline group.On the other hand,with the increase of granite manufactured sand content,the chloride ion permeability decreases first and then increases,and the overall chloride ion permeability is weaker than the baseline group.

关 键 词：机制砂岩性 石灰石机制砂 花岗岩机制砂 抗氯离子渗透性能 

分 类 号：TU528[建筑科学—建筑技术科学]