丁湛;邴慧;查广平;栗培龙;柳玉;

• 1:长安大学水利与环境学院旱区地下水文与生态效应教育部重点实验室
• 2:长庆工程设计有限公司
• 3:长安大学道路结构与材料交通行业重点实验室
• 4:陕西北元化工集团股份有限公司

摘要(Abstract)：

为了研究激发剂对电石渣稳定土强度的影响及协同作用，通过不同龄期的电石渣稳定土无侧限抗压强度试验，以抗压强度为评价指标，分析了KOH、Na_2SO_4和Na_2SiO_3三种激发剂对电石渣及电石渣-粉煤灰稳定土强度的影响；针对3种激发剂及延迟成型时间设计了不同水平的响应面试验，分析了激发剂之间的协同作用；基于激发剂掺量优化试验结果，采用Design-Expert软件构建了激发剂种类和掺量的强度预估模型。结果表明：3种激发剂均可以有效提高电石渣稳定土强度；根据单因素分析，KOH合理掺量范围为0.6%～1.2%,Na_2SiO_3、Na_2SO_4合理掺量范围均为1%～1.5%;根据协同作用分析，给出了电石渣稳定土不同延迟成型时间的激发剂最佳掺量，其中延迟成型时间为16.41 h条件下，KOH、Na_2SO_4、Na_2SiO_3的最佳掺量分别为1.20%、1.72%、1.79%,延迟成型时间21.90 h条件下，相应的最佳掺量分别为1.20%、2.00%、1.85%。

关键词(KeyWords)： 环境工程学;电石渣稳定土;抗压强度;激发剂;预估模型

Abstract:

Keywords:

基金项目(Foundation): 中央高校基本科研业务费创新团队培育项目(300102218405);; 陕西北元化工集团股份有限公司科技项目(2018KJB00)

作者(Authors): 丁湛;邴慧;查广平;栗培龙;柳玉;

DOI: 10.13637/j.issn.1009-6094.2021.0510

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