气泡混合轻质土发泡剂优选及性能试验研究

发布时间：2018-05-30 14:59

本文选题：FCB + 发泡剂　；参考：《中外公路》2017年05期

【摘要】：气泡混合轻质土(简称FCB)是近年来兴起的一种新型填筑材料,可以有效解决公路路基的不均匀沉降、软基换填以及桥头跳车等问题,但由于FCB生产成本较高,限制了其在工程领域的推广应用。该文从发泡剂的角度考虑,通过探讨植物蛋白类、AES、松香皂类发泡剂以及由松香皂发泡剂为主,并掺以改性物质,复配出3种复合发泡剂,制备FCB,对比其流变性能、力学性能、经济性,优选出一种性能好且经济的发泡剂。结果表明:通过流变性能和力学性能试验,发泡剂性能优劣依次为:植物蛋白类AES松香皂类,并结合经济性分析,3种发泡剂推荐使用AES;通过复合1、2、3发泡剂与AES的性能比较,并通过经济性评价,确定复合2发泡剂为该研究所优选的发泡剂;通过对复合2发泡剂与AES发泡剂制备FCB内部微观结构的分析,发现复合2发泡剂的FCB在微观孔隙结构特征上表现更为优异。
[Abstract]:Bubble mixed lightweight soil (FCBs) is a new type of filling material, which can effectively solve the problems of uneven settlement of highway subgrade, soft foundation replacement and bridge-head hopping. However, the production cost of FCB is high. It limits its popularization and application in the field of engineering. In this paper, from the point of view of foaming agent, three kinds of compound foaming agent FCBs were prepared by discussing plant protein type AESs, rosin soap foaming agent and rosin soap foaming agent as the main foaming agent, and mixed with modified substances. The rheological and mechanical properties of FCBs were compared. Economy, excellent selection of a good performance and economic foaming agent. The results showed that the properties of foaming agent were as follows: plant protein AES rosin soap, and combined with economic analysis three kinds of foaming agent recommended AESs, and the properties of foaming agent were compared with that of AES. Through the economic evaluation, the compound 2 foaming agent was selected as the best foaming agent in the institute, and the microstructure of FCB prepared by the compound 2 foaming agent and AES foaming agent was analyzed. It was found that FCB with compound 2 foaming agent was more excellent in micropore structure.
【作者单位】：包头交通投资集团有限公司;长沙理工大学交通运输工程学院;
【基金】：内蒙古自治区交通运输厅建设科技项目(编号:NJ-2015-35)
【分类号】：U416.1

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