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材料导报  2021, Vol. 35 Issue (22): 22092-22097    https://doi.org/10.11896/cldb.20080213
  无机非金属及其复合材料 |
电石渣稳定土抗压强度影响因素及预估模型研究
栗培龙1,2, 裴仪2, 胡晋川3, 胡伟2
1 长安大学道路结构与材料交通行业重点实验室,西安 710064
2 长安大学公路学院,西安 710064
3 山西省交通规划勘测设计院有限公司,太原 030032
Research on Influencing Factors and Prediction Model of Compressive Strength of Carbide Slag Stabilized Soil
LI Peilong1,2, PEI Yi2, HU Jinchun3, HU Wei2
1 Key Laboratory of Road Structure & Material Ministry of Transport, Chang'an University, Xi'an 710064, China
2 School of Highway, Chang'an University, Xi'an 710064, China
3 Shanxi Transportation Planning Survey and Design Institute Co., Ltd., Taiyuan 030032, China
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摘要 电石渣是一种工业废料,可用于制备电石渣稳定土(Carbide slag stabilized soil,CS)。本研究以粉黏质黄土为稳定对象,分析了试件压实度、养生龄期和电石渣含量等因素对CS无侧限抗压强度的影响,并建立了包含养生龄期(T)、孔隙率(n)和电石渣体积率(Civ)等因子的无侧限抗压强度(Rc)的电石渣稳定土强度预估模型。结果表明:CS试件无侧限抗压强度随压实度的增加呈线性增长,随养生龄期的延长呈对数型增加,同时随电石渣含量的增加显著提升。该模型能较好地预测CS试件的无侧限抗压强度,预估强度同实测强度误差绝对值在0.25 MPa之内,相对误差小于20%。
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栗培龙
裴仪
胡晋川
胡伟
关键词:  电石渣土  无侧限抗压强度  敏感性  养生龄期  强度预估模型    
Abstract: Carbide slag, an industrial waste, can be used to prepare carbide slag stabilized soil (CS). In this paper, the effects of compactness, curing time and calcium carbide slag content on the unconfined compressive strength of CS specimens were analyzed with the carbide slag solidified silty clay as the research object. A prediction model of unconfined compressive strength (Rc) of CS specimens was established considering curing time (T), porosity (n) and volume ratio of carbide slag (Civ). The results show that the unconfined compressive strength of CS specimen rises linearly with the increase of compactness and logarithmically with the extension of curing time, while the increase of carbide slag content has a significant improvement on the unconfined compressive strength of CS specimen. In addition, the verification analysis found that the model can better predict the compressive strength of CS specimens. The absolute error between the estimated strength and the measured strength is within 0.25 MPa, and the relative error does not exceed 20%.
Key words:  calcium carbide slag    unconfined compressive strength    sensitivity    curing time    strength prediction model
出版日期:  2021-11-25      发布日期:  2021-12-13
ZTFLH:  TU411  
基金资助: 国家自然科学基金(51878061)
通讯作者:  lipeilong@chd.edu.cn   
作者简介:  栗培龙,长安大学公路学院教授,博士生导师,University of California at Davis(UC Davis)访问学者,注册公路检测工程师(公路、材料)。现任公路学院机场工程系主任、道路结构与材料交通行业重点实验室副主任。主要从事路面/道面材料结构与性能研究,研究方向包括: 新型高性能、环保型路面材料研究与开发,沥青混合料微细观力学作用行为及机理,沥青改性作用机理及动力学特性, 新型道路养护材料与技术等。
引用本文:    
栗培龙, 裴仪, 胡晋川, 胡伟. 电石渣稳定土抗压强度影响因素及预估模型研究[J]. 材料导报, 2021, 35(22): 22092-22097.
LI Peilong, PEI Yi, HU Jinchun, HU Wei. Research on Influencing Factors and Prediction Model of Compressive Strength of Carbide Slag Stabilized Soil. Materials Reports, 2021, 35(22): 22092-22097.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.20080213  或          http://www.mater-rep.com/CN/Y2021/V35/I22/22092
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