电石渣-脱硫灰复掺对流态固化土基本性能及微观特性的影响

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (12): 4449-4455.

电石渣-脱硫灰复掺对流态固化土基本性能及微观特性的影响

包益鋆¹, 王宁宁^2,3, 李书进³, 吴文文⁴, 陈徐东⁵, 张文文²

1.常州大学环境科学与工程学院,常州 213164;
2.南京三合建环保科技有限公司,南京 210000;
3.常州工学院土木建筑工程学院,常州 213000;
4.中建三局集团有限公司,武汉 430000;
5.河海大学土木与交通学院,南京 210024

收稿日期:2023-07-05 修订日期:2023-08-20 出版日期:2023-12-15 发布日期:2023-12-12
通信作者: 王宁宁,高级工程师。E-mail:wnn541@jsti.com
作者简介:包益鋆(1999—),男,硕士研究生。主要从事建筑材料方面的研究。E-mail:byj990123@163.com
基金资助:
江苏省高校自然科学基础研究重大项目(22KJA560005)

Influence of Calcium Carbide Slag-Desulfurization Ash on Basic Properties and Microscopic Characteristics of Fluid Solidified Soil

BAO Yijun¹, WANG Ningning^2,3, LI Shujin³, WU Wenwen⁴, CHEN Xudong⁵, ZHANG Wenwen²

1. School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China;
2. Nanjing Sanhejian Environmental Technology Co., Ltd., Nanjing 210000, China;
3. School of Civil Engineering and Architecture, Changzhou Institute of Technology, Changzhou 213000, China;
4. China Construction Third Bureau Group Co., Ltd., Wuhan 430000, China;
5. College of Civil and Transportation Engineering, Hohai University, Nanjing 210024, China

Received:2023-07-05 Revised:2023-08-20 Online:2023-12-15 Published:2023-12-12

摘要/Abstract

摘要： 流态固化土基本性能指标包括湿密度、泌水率、流动值和抗压强度。为探究电石渣和脱硫灰复掺对流态固化土基本性能及微观特性的影响,使用同掺量的电石渣和脱硫灰单一替代以及同时替代Ca(OH)₂和CaSO₄(分析纯),测试其对流态固化土的流动值、泌水率、抗压强度等的影响,采用XRD及SEM对比分析两种分析纯试剂和两种固废制备的试件28 d的物相组成及微观形貌。结果表明,使用电石渣和脱硫灰单掺或复掺制备的流态固化土的流动性均优于使用Ca(OH)₂和CaSO₄复掺流态固化土,泌水率均满足要求,虽然其28 d抗压强度小于Ca(OH)₂和CaSO₄复掺试样,但是能满足大部分应用场景抗压强度要求。

关键词: 流态固化土, 电石渣, 脱硫灰, 流动性, 抗压强度, 微观结构

Abstract: The basic performance indexes of fluid solidified soil include wet density, bleeding rate, flow value and compressive strength. In order to explore the influence of calcium carbide slag and desulfurization ash on the basic properties and microscopic characteristics of fluid solidified soil, Ca(OH)₂ and CaSO₄ analytical reagents were replaced solely or simultaneously with the same amount of calcium carbide slag and desulfurization ash, and their effects on the flow value, bleeding rate and compressive strength of fluid solidified soil were tested. XRD and SEM were used to compare and analyze the phase composition and microscopic morphology of the samples prepared with two analytical reagents and two kinds of solid wastes at 28 d. The results show that the fluidities of the fluid solidified soil specimens prepared with calcium carbide slag and desulfurization ash are better than that of the fluid solidified soil mixed with Ca(OH)₂ and CaSO₄, and their bleeding rates meet requirement. The 28 d compressive strength of fluid solidified soil prepared with calcium carbide slag and desulfurization ash is less than that prepared with Ca(OH)₂ and CaSO₄ analytical reagents, but it can also meet the compressive strength requirements of most application scenarios.

Key words: fluid solidified soil, calcium carbide slag, desulfurization ash, fluidity, compressive strength, microstructure

中图分类号:

TU502

包益鋆, 王宁宁, 李书进, 吴文文, 陈徐东, 张文文. 电石渣-脱硫灰复掺对流态固化土基本性能及微观特性的影响[J]. 硅酸盐通报, 2023, 42(12): 4449-4455.

BAO Yijun, WANG Ningning, LI Shujin, WU Wenwen, CHEN Xudong, ZHANG Wenwen. Influence of Calcium Carbide Slag-Desulfurization Ash on Basic Properties and Microscopic Characteristics of Fluid Solidified Soil[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(12): 4449-4455.

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