碱激发矿渣-赤泥新型低碳透水混凝土性能研究

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摘要：以粒化高炉矿渣与拜耳法赤泥两种工业固废作为胶凝材料,硅酸钠溶液作为碱激发剂,石灰岩碎石作为粗骨料,制备透水混凝土,研究了设计孔隙率、水胶比与骨料粒径对透水混凝土强度与透水性能的影响。结果表明:随设计孔隙率增大,试样的强度逐渐减小,但透水性能逐渐增强。最优水胶比受设计孔隙率和骨料粒径的影响,当透水混凝土设计孔隙率为15%、骨料粒径为4.75～9.50 mm时,最优水胶比为0.36,其强度较高且具有良好的透水性能。碱矿渣-赤泥透水混凝土的力学与透水性能均优于水泥透水混凝土,符合低碳绿色的发展理念。

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关键词： 透水混凝土;赤泥;矿渣;设计孔隙率;水胶比;骨料粒径

Abstract：Pervious concrete was prepared with two industrial solid wastes of granulated blastfurnace slag and Bayer red mud as cementitious materials, sodium silicate solution as alkali activator, and limestone gravel as coarse aggregate. The effects of design porosity, waterbinder ratio and aggregate size on the strength and permeability of pervious concrete were studied respectively. The optimal waterbinder ratio is influenced by the design porosity and aggregate size. When the design porosity of pervious concrete is 15% and the aggregate size is 4.75-9.50 mm, the optimal waterbinder ratio of 0.36 and it has a higher strength and has good water permeability. The mechanics and permeability performance of alkaliactivated slagred mud pervious concrete are better than those of cement pervious concrete, which is in line with the development concept of low carbon and green.

Key words： pervious concrete; red mud; slag; design porosity; waterbinder ratio; aggregate size

基金资助：国家自然科学基金资助项目(52108332）;江苏省自然科学基金资助项目(BK20210051);南京市建设系统科技计划项目(Ks2153);山西住房和城乡建设厅2021年科学技术计划项目

通讯作者介绍：王安辉（1989—），男，河南商丘人，高级工程师，博士，主要从事环境岩土工程方面的研究工作

作者简介：吴敏（1995—），男，山西忻州人，硕士研究生，研究方向为低碳混凝土材料

引用本文：

吴敏¹,王晨¹,王安辉²,段伟¹,张洁雅¹,董晓强¹.碱激发矿渣-赤泥新型低碳透水混凝土性能研究[J].人民黄河,2024,46(4):148-152.
WU Min¹, WANG Chen¹, WANG Anhui², DUAN Wei¹, ZHANG Jieya¹, DONG Xiaoqiang¹.Study on Properties of New LowCarbon Pervious Concrete with AlkaliActivated SlagRed Mud .Yellow River,2024,46(4):148-152.

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http://www.rmhh.com.cn/qklb/2024/202404/202404/t20240407_568961.html

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2024,Vol. 46(4): 148

碱激发矿渣-赤泥新型低碳透水混凝土性能研究

吴敏¹,王晨¹,王安辉²,段伟¹,张洁雅¹,董晓强¹

（（1.太原理工大学土木工程学院,山西太原 030024;2.中建安装集团有限公司,江苏南京 210023））

doi:

Study on Properties of New LowCarbon Pervious Concrete with AlkaliActivated SlagRed Mud

WU Min¹, WANG Chen¹, WANG Anhui², DUAN Wei¹, ZHANG Jieya¹, DONG Xiaoqiang¹

(1.Department of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China;2.China Construction Industrial & Energy Engineering Group Co., Ltd., Nanjing 210023, China)

全文: PDF ()

摘要： 以粒化高炉矿渣与拜耳法赤泥两种工业固废作为胶凝材料,硅酸钠溶液作为碱激发剂,石灰岩碎石作为粗骨料,制备透水混凝土,研究了设计孔隙率、水胶比与骨料粒径对透水混凝土强度与透水性能的影响。结果表明:随设计孔隙率增大,试样的强度逐渐减小,但透水性能逐渐增强。最优水胶比受设计孔隙率和骨料粒径的影响,当透水混凝土设计孔隙率为15%、骨料粒径为4.75～9.50 mm时,最优水胶比为0.36,其强度较高且具有良好的透水性能。碱矿渣-赤泥透水混凝土的力学与透水性能均优于水泥透水混凝土,符合低碳绿色的发展理念。

关键词：

Abstract: Pervious concrete was prepared with two industrial solid wastes of granulated blastfurnace slag and Bayer red mud as cementitious materials, sodium silicate solution as alkali activator, and limestone gravel as coarse aggregate. The effects of design porosity, waterbinder ratio and aggregate size on the strength and permeability of pervious concrete were studied respectively. The optimal waterbinder ratio is influenced by the design porosity and aggregate size. When the design porosity of pervious concrete is 15% and the aggregate size is 4.75-9.50 mm, the optimal waterbinder ratio of 0.36 and it has a higher strength and has good water permeability. The mechanics and permeability performance of alkaliactivated slagred mud pervious concrete are better than those of cement pervious concrete, which is in line with the development concept of low carbon and green.

Key words: pervious concrete; red mud; slag; design porosity; waterbinder ratio; aggregate size

收稿日期:

基金资助: 国家自然科学基金资助项目(52108332）;江苏省自然科学基金资助项目(BK20210051);南京市建设系统科技计划项目(Ks2153);山西住房和城乡建设厅2021年科学技术计划项目

作者简介: 吴敏（1995—），男，山西忻州人，硕士研究生，研究方向为低碳混凝土材料