钢渣双掺混凝土力学与耐久性能试验研究

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (8): 2846-2855.

钢渣双掺混凝土力学与耐久性能试验研究

王成刚^1,2, 刘耀伟¹, 王帅¹, 马兵辉³, 毕功华⁴

1.合肥工业大学土木与水利工程学院,合肥 230009;
2.土木工程结构与材料安徽省重点实验室,合肥 230009;
3.安徽同济建设集团有限责任公司,合肥 230000;
4.安徽省建筑设计研究总院股份有限公司,合肥 230001

收稿日期:2023-04-12 修订日期:2023-05-28 发布日期:2023-08-18
通信作者: 王帅,硕士研究生。E-mail:1157989719@qq.com
作者简介:王成刚(1974—),男,副教授。主要从事固废再利用和组合结构方面的研究。E-mail:767717839@qq.com
基金资助:
安徽省住房城乡建设科学技术计划(2020-YF40);安徽省住房和城乡建设科学技术计划(2021-YF33);中央科研基本业务费支持(PA2022GDSK0062)

Mechanical Properties and Durability of Double-DopedSteel Slag Concrete

WANG Chenggang^1,2, LIU Yaowei¹, WANG Shuai¹, MA Binghui³, BI Gonghua⁴

1. College of Civil Engineering, Hefei University of Technology, Hefei 230009, China;
2. Anhui Provincial Key Laboratory of Civil Engineering Structure and Materials, Hefei 230009, China;
3. Anhui Tongji Construction Group Co., Ltd., Hefei 230000, China;
4. Anhui Provincial Architectural Design and Research Institute Co., Ltd., Hefei 230001, China

Received:2023-04-12 Revised:2023-05-28 Published:2023-08-18

摘要/Abstract

摘要： 为了进一步提高钢渣混凝土中钢渣的利用率,本文使用粗钢渣和细钢渣等质量比例同时取代混凝土中的天然粗骨料和天然细骨料制备C30钢渣双掺混凝土,研究粗、细钢渣骨料取代率对钢渣双掺混凝土力学性能和耐久性能的影响规律。研究结果表明:钢渣双掺混凝土的力学性能普遍优于普通混凝土,且随着粗、细钢渣骨料取代率的增加,钢渣双掺混凝土的力学性能增强,其抗碳化性能先增强后减弱,抗氯离子渗透性能逐渐减弱。本文提出了钢渣双掺混凝土的立方体抗压强度与其他力学指标之间的换算公式。综合考虑钢渣双掺混凝土的力学性能和耐久性能,建议在实际工程应用中粗、细钢渣骨料的取代率不宜高于40%(质量分数)。

关键词: 钢渣混凝土, 粗钢渣, 细钢渣, 力学性能, 耐久性能

Abstract: In order to further improve the utilization rate of steel slag in steel slag concrete, C30 double-doped steel slag concrete was prepared by replacing natural coarse aggregate and fine aggregate in concrete with coarse steel slag and fine steel slag at the same mass ratio, and the effects of coarse and fine steel slag aggregates substitution level on the mechanical properties and durability of double-doped steel slag concrete were studied. The results show that the mechanical properties of double-doped steel slag concrete are generally better than those of ordinary concrete. With the increase of coarse and fine steel slag substitution levels, its mechanical properties are enhanced, its carbonization resistance is first enhanced and then weakened, and its resistance to chloride ion permeation is gradually weakened. In this paper, the relationship between the cubic compressive strength of double-doped steel slag concrete and other mechanical indexes was also studied, and the corresponding conversion formula was given. Considering both the mechanical properties and durability of double-doped steel slag concrete, it is suggested that the replacement rate of coarse and fine steel slag aggregates should not be higher than 40% (mass fraction).

Key words: steel slag concrete, coarse steel slag, fine steel slag, mechanical property, durability

中图分类号:

TU528.041

王成刚, 刘耀伟, 王帅, 马兵辉, 毕功华. 钢渣双掺混凝土力学与耐久性能试验研究[J]. 硅酸盐通报, 2023, 42(8): 2846-2855.

WANG Chenggang, LIU Yaowei, WANG Shuai, MA Binghui, BI Gonghua. Mechanical Properties and Durability of Double-DopedSteel Slag Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(8): 2846-2855.

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