火成岩质矿物材料对混凝土性能的影响

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (9): 3244-3251.

火成岩质矿物材料对混凝土性能的影响

王浩^1,2, 谭盐宾^1,2, 刘星³, 杨鲁^1,2, 元强⁴, 谢斌福³, 刘博³

1.中国铁道科学研究院集团有限公司铁道建筑研究所,北京 100081;
2.中国铁道科学研究院集团有限公司高速铁路轨道系统全国重点实验室,北京 100081;
3.中国建筑土木建设有限公司,北京 100073;
4.中南大学土木工程学院,长沙 410075

收稿日期:2024-01-19 修订日期:2024-03-20 出版日期:2024-09-15 发布日期:2024-09-19
通信作者: 谭盐宾,研究员。E-mail:13581968528@126.com
作者简介:王浩(1990—),男。主要从事高性能混凝土及功能型外加剂的研究。E-mail:wanghaocumtb@126.com

Influences of Igneous Rock Mineral Materials on Properties of Concrete

WANG Hao^1,2, TAN Yanbin^1,2, LIU Xing³, YANG Lu^1,2, YUAN Qiang⁴, XIE Binfu³, LIU Bo³

1. Railway Engineering Research Institute, China Academy of Railway Sciences Co., Ltd., Beijing 100081, China;
2. State Key Laboratory for Track Technology of High-Speed Railway, China Academy of Railway Sciences Co., Ltd., Beijing 100081, China;
3. China Construction Civil Engineering Co., Ltd., Beijing 100073, China;
4. School of Civil Engineering, Central South University, Changsha 410075, China

Received:2024-01-19 Revised:2024-03-20 Published:2024-09-15 Online:2024-09-19

摘要/Abstract

摘要： 我国西南地区粉煤灰混凝土矿物掺合料资源匮乏,亟待开发替代材料。本文研究了四种火成岩质矿物材料对混凝土工作性能、力学性能以及耐久性能的影响,评估了混凝土的开裂风险。结果表明:火成岩质矿物材料等质量替代粉煤灰后,硬化混凝土的抗压强度和抗氯离子渗透性能均满足标准要求,减水剂用量、早期抗压强度、电通量以及收缩率均高于粉煤灰混凝土;掺加凝灰岩微粉的硬化混凝土与粉煤灰混凝土性能基本相当,玄武岩微粉混凝土对减水剂的需求量最大、抗压强度最低。掺加火成岩质矿物材料的混凝土抗裂性能有所降低,掺加凝灰岩微粉和粉煤灰的混凝土开裂风险为“低”级,掺加安山岩微粉、玄武岩微粉以及流纹岩微粉混凝土的开裂风险为“中低”级。四种火成岩质矿物材料混凝土中凝灰岩微粉混凝土性能最优,凝灰岩微粉可替代粉煤灰掺入混凝土。

关键词: 混凝土, 火成岩质矿物材料, 工作性能, 力学性能, 耐久性能, 开裂风险

Abstract: The mineral admixture resources of fly ash-based concrete in southwest China are scarce, and it is urgent to develop alternative materials. In this paper, the effects of four kinds of igneous rock mineral materials on the working performance, mechanical properties and durability of concrete were studied, and the cracking risk of concrete was evaluated. The results show that the compressive strength and chloride ion penetration resistance of hardened concrete meet the standard requirements after replacing fly ash with igneous rock mineral materials by equal quality. The dosage of water reducing agent, early compressive strength, electric flux and shrinkage rate are higher than those of fly ash concrete. The performance of hardened concrete mixed with tuff micropowder is basically the same as that of fly ash concrete. Basalt micropowder concrete has the largest demand for water reducing agent and the lowest compressive strength. The crack resistance of concrete mixed with igneous rock mineral materials is reduced. The cracking risk of concrete mixed with tuff micropowder and fly ash is low level, and the cracking risk of concrete mixed with andesite micropowder, basalt micropowder and rhyolite micropowder is medium-low level. Among the four kinds of igneous rock mineral materials, tuff micropowder concrete has the best performance and can replace fly ash into concrete.

Key words: concrete, igneous rock mineral material, working performance, mechanical property, durability, cracking risk

中图分类号:

TU528

王浩, 谭盐宾, 刘星, 杨鲁, 元强, 谢斌福, 刘博. 火成岩质矿物材料对混凝土性能的影响[J]. 硅酸盐通报, 2024, 43(9): 3244-3251.

WANG Hao, TAN Yanbin, LIU Xing, YANG Lu, YUAN Qiang, XIE Binfu, LIU Bo. Influences of Igneous Rock Mineral Materials on Properties of Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(9): 3244-3251.

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