两类三元胶凝体系的构建及配比优化

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (5): 1822-1831.

所属专题：水泥混凝土

两类三元胶凝体系的构建及配比优化

荆彪^1,2, 张凯峰^2,3, 桑国臣¹, 童小根², 朱王科²

1.西安理工大学土木建筑工程学院,西安 710048;
2.中建西部建设北方有限公司,西安 710065;
3.长安大学建筑工程学院,西安 710061

收稿日期:2023-10-17 修订日期:2023-12-26 出版日期:2024-05-15 发布日期:2024-06-06
通信作者: 桑国臣,博士,教授。E-mail:sangguochen@xaut.edu.cn
作者简介:荆彪(1997—),男,硕士研究生。主要从事高性能混凝土研究。E-mail:1358429425@qq.com
基金资助:
中建西部建设北方有限公司科技研发项目(BF202216);陕西省科协企业创新争先青年人才托举计划(20230434)

Construction and Mix Ratio Optimization of Two Kinds of Ternary Gelling Systems

JING Biao^1,2, ZHANG Kaifeng^2,3, SANG Guochen¹, TONG Xiaogen², ZHU Wangke²

1. School of Civil and Architectural Engineering, Xi'an University of Technology, Xi'an 710048, China;
2. China Construction West Construction North Co., Ltd., Xi'an 710065, China;
3. School of Civil Engineering, Chang'an University, Xi'an 710061, China

Received:2023-10-17 Revised:2023-12-26 Online:2024-05-15 Published:2024-06-06

摘要/Abstract

摘要： 为了保证混凝土材料性能,同时实现低碳、绿色化发展,本文以矿渣粉(GS)、粉煤灰(FA)和石灰石粉(LS)等辅助胶凝材料(SCMs)替代55%(质量分数)水泥(C)制备了两种三元胶凝体系,即粉煤灰-矿渣粉-水泥体系(FGC)和石灰石粉-矿渣粉-水泥体系(LGC),研究了体系中FA-GS、LS-GS比例变化对三元胶凝材料粉料堆积密实度、工作性和强度的影响,并结合微观结构分析确定了三元胶凝体系的最佳配比。结果表明,随着两种三元胶凝体系中GS占比的增大,试样密实度和流动性略微减小,试样抗压、抗折强度以及环境效益逐渐增大。在FA-GS和LS-GS质量比均为3∶8时,两种胶凝体系制备的胶砂试样中后期强度均能接近甚至超过纯水泥试样。

关键词: 粉煤灰, 矿粉, 石灰石粉, 抗压强度, 抗折强度, 微观结构, 配比优化

Abstract: In order to ensure the performance of concrete materials and achieve low-carbon and green development, two kinds of ternary cementitious systems were prepared by replacing 55% (mass fraction) cement (C) with auxiliary cementitious materials (SCMs) such as slag powder (GS), fly ash (FA) and limestone powder (LS), namely fly ash-slag powder-cement system (FGC) and limestone powder-slag powder-cement system (LGC). The influence of the proportion changes of FA-GS and LS-GS in system on compactness, workability, and strength of ternary cementitious material powder was studied, and the optimum mix ratio of ternary cementitious system was determined by microstructure analysis. The results show that as the proportion of GS in the two ternary cementitious systems increases, the compactness and flowability of sample slightly decrease, while the compressive strength, flexural strength, and environmental benefits of sample gradually increase. When the mass ratio of FA-GS and LS-GS is both 3∶8, the middle and late strength of mortar samples prepared by the two cementitious systems can be close to or even higher than that of pure cement samples.

Key words: fly ash, mineral powder, limestone powder, compressive strength, flexural strength, microstructure, mix ratio optimization

中图分类号:

TU528

荆彪, 张凯峰, 桑国臣, 童小根, 朱王科. 两类三元胶凝体系的构建及配比优化[J]. 硅酸盐通报, 2024, 43(5): 1822-1831.

JING Biao, ZHANG Kaifeng, SANG Guochen, TONG Xiaogen, ZHU Wangke. Construction and Mix Ratio Optimization of Two Kinds of Ternary Gelling Systems[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(5): 1822-1831.

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两类三元胶凝体系的构建及配比优化

Construction and Mix Ratio Optimization of Two Kinds of Ternary Gelling Systems

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