硅灰-矿粉改性透水再生混凝土力学性能及耐磨性影响研究  

Study on the mechanical properties and wear resistance of silica fume mineral powder modified permeable recycled concrete

作　　者：任成强 于杰 Ren Chengqiang;Yu Jie(China Metallurgical Group Decoration Engineering Co.,Ltd.,Chengdu 610000,China)

机构地区：[1]中国五冶集团装饰工程有限公司,四川成都610000

出　　处：《水泥工程》2025年第1期91-96,共6页Cement Engineering

摘　　要：研究不同掺量矿粉、硅灰单掺及复掺对透水再生混凝土的抗压强度、耐磨性能和微观结构影响。结果表明:单掺硅灰可以提高透水再生混凝土的抗压强度和耐磨性能,当掺入7%硅灰耐磨性能较对照组透水再生混凝土提高22.8%,抗压强度提高4.4%,渗透系数降低14.9%;复掺20%矿粉和7%硅灰的透水再生混凝土耐磨性能较对照组提高33.3%,抗压强度提高8.2%,渗透系数降低21.3%;通过SEM可以看出,复掺硅灰-矿粉可以明显提高透水再生混凝土界面结构,优化水化产物组成及孔隙密实,从而增强透水再生混凝土抗压强度和耐磨性能。The effects of different dosage of ore powder and silica fume on compressive strength,wear resistance and micro-structure of pervious recycled concrete were studied.The results show that the compressive strength and wear resistance of pervious recycled concrete can be improved by adding silica fume alone.Compared with the control group,the wear resis-tance of pervious recycled concrete increases by 22.8%,the compressive strength increases by 4.4%and the permeability coefficient decreases by 14.9%when adding silica fume alone.Compared with the control group,the wear resistance of per-vious recycled concrete mixed with 20%ore powder and 7%silica fume increased by 33.3%,the compressive strength in-creased by 8.2%and the permeability coefficient decreased by 21.3%.It can be seen from SEM that the compound mixing of silica fume and mineral powder can significantly improve the interface structure of pervious recycled concrete,optimize the composition of hydration products and porosity compaction,thus enhancing the compressive strength and wear resis-tance of pervious recycled concrete.

关 键 词：透水再生混凝土 硅灰 矿粉 抗压强度 耐磨性能 

分 类 号：TQ172.6[化学工程—水泥工业]