Effect of activator on compressive strength of steel slag powder cement soil

Authors

CHEN Fei, 1. Shanxi Transportation Construction Engineering Quality Detection Center, Taiyuan, Shanxi 030000, China;
WANG Yanchun, 2. Shanxi Vocational University of Engineering Science and Technology, Jinzhong, Shanxi 030619, ChinaFollow
DU Sujun, 2. Shanxi Vocational University of Engineering Science and Technology, Jinzhong, Shanxi 030619, China

Abstract

In order to reasonably solve the environmental pollution caused by steel slag, steel slag powder was used to improve cement soil. The optimal mix ratio was determined by a laboratory unconfined compressive strength test to prepare steel slag powder cement soil. In view of of low activity and limited compressive strength enhancement effect of steel slag powder, three kinds of activators including sodium hydroxide, silica fume, and calcium chloride were selected to be added to steel slag powder cement soil, so as to study the strength variation rule. The results show that the strength of cement soil can be improved with different steel slag contents, and the compressive strength of cement soil can be improved better when the soil sample is mixed with an equal proportion of cement and steel slag powder. When 10% steel slag powder is mixed with different kinds of activators, the strength change trend is different. When the content of sodium hydroxide is 0.5%, the compressive strength reaches the maximum value. When the content of silica fume is 1.5%, the strength of the sample is improved obviously. The compressive strength of the samples decreases with the increase in calcium chloride content.

Publication Date

7-14-2023

DOI

10.14048/j.issn.1671-2579.2023.03.038

First Page

244

Last Page

247

Submission Date

March 2025

Recommended Citation

Fei, CHEN; Yanchun, WANG; and Sujun, DU (2023) "Effect of activator on compressive strength of steel slag powder cement soil," Journal of China & Foreign Highway: Vol. 43: Iss. 3, Article 38.
DOI: 10.14048/j.issn.1671-2579.2023.03.038
Available at: https://zwgl1980.csust.edu.cn/journal/vol43/iss3/38

Reference

[1] 吴燕开, 于佳丽, 韩天, 等. 硅灰改良钢渣-水泥土强度特性及固化机理[J]. 科学技术与工程, 2018, 18(21): 88-94. WU Yankai, YU Jiali, HAN Tian, et al. Strength characteristics and reinforcement mechanism of silica fume improved steel slag-cement soil[J]. Science Technology and Engineering, 2018, 18(21): 88-94. [2] 刘娅. 改良淤泥类软土强度的试验研究[J]. 交通世界, 2018(22): 68-69. LIU Ya. Experimental study on improving the strength of silt soft soil[J]. TranspoWorld, 2018(22): 68-69. [3] 陈一新, 王保田, 张永奇, 等. 石灰改良淤泥质土的试验研究[J]. 科学技术与工程, 2014, 14(34): 273-277. CHEN Yixin, WANG Baotian, ZHANG Yongqi, et al. Experimental study on lime improved mucky soil[J]. Science Technology and Engineering, 2014, 14(34): 273-277. [4] 吴燕开, 胡锐, 赵位莹, 等. 钢渣粉固化淤泥质水泥土强度特性试验研究[J]. 科学技术与工程, 2017, 17(15): 306-311. WU Yankai, HU Rui, ZHAO Weiying, et al. Study on strength characteristic of muddy cement soil stabilized by steel slag powder[J]. Science Technology and Engineering, 2017, 17(15): 306-311. [5] 赫文秀, 申向东. 掺砂水泥土的力学特性研究[J]. 岩土力学, 2011, 32(S1): 392-396. HE Wenxiu, SHEN Xiangdong. Study on mechanical properties of sand-mixed cement soil[J]. Rock and Soil Mechanics, 2011, 32(S1): 392-396. [6] 刘成才, 郭艳坤, 郭乐工. 粉煤灰掺量对水泥砾质土力学效应影响[J]. 公路工程, 2017, 42(6): 148-151+198. LIU Chengcai, GUO Yankun, GUO Legong. Effects of fly ash content on mechanical effect of cement gravel soil[J]. Highway Engineering, 2017, 42(6): 148-151+198. [7] 夏永杰, 王丽艳, 刘瀚淼. 掺废弃钢渣的水泥土强度特性试验研究[J]. 中外公路, 2016, 36(5): 243-246. XIA Yongjie, WANG Liyan, LIU Hanmiao. Experimental study on strength characteristics of cement-soil mixed with waste steel slag[J]. Journal of China & Foreign Highway, 2016, 36(5): 243-246. [8] 张彬, 宫照伟. 铁尾矿粉改良水泥土的强度与动力特性试验研究[J]. 硅酸盐通报, 2017, 36(11): 3607-3612. ZHANG Bin, GONG Zhaowei. Experimental study on strength and dynamic characteristics of cement soil modified with iron tailings powder[J]. Bulletin of the Chinese Ceramic Society, 2017, 36(11): 3607-3612. [9] 陈峰. 镍铁渣粉对水泥土的强度影响试验研究[J]. 硅酸盐通报, 2018, 37(10): 3113-3118. CHEN Feng. Experimental research on the strength of cement soil with nickel iron slag powder[J]. Bulletin of the Chinese Ceramic Society, 2018, 37(10): 3113-3118. [10] 王继成. 硅粉对淤泥水泥土性能改善的试验研究[J]. 水利科技, 2018(2): 48-50+54. WANG Jicheng. Experimental study on the property improvement of silt cement soil by silica fume[J]. Hydraulic Science and Technology, 2018(2): 48-50+54. [11] 解国梁, 陶传迁, 申向东. 硅粉对中低掺量水泥土早期强度的影响[J]. 混凝土, 2012(5): 88-90. XIE Guoliang, TAO Chuanqian, SHEN Xiangdong. Influence of silica fume on early strength of middle and low-dosage of cement soil[J]. Concrete, 2012(5): 88-90. [12] 沈建生. 新型固化剂的研制及在软土加固中的试验研究[D]. 杭州: 浙江大学, 2013. SHEN Jiansheng. Development of new curing agent and its experimental study in soft soil reinforcement[D]. Hangzhou: Zhejiang University, 2013. [13] 王丽艳, 高鹏, 陈香香. 掺合废弃钢渣的新型混合轻质砂土的强度特性试验研究[J]. 公路, 2013, 58(11): 204-209. WANG Liyan, GAO Peng, CHEN Xiangxiang. Experimental study on strength characteristics of new mixed lightweight sand mixed with waste steel slag[J]. Highway, 2013, 58(11): 204-209.