Early strength of stabilized soil affected by functional components

LIU Jin-ming; OU Zhong-wen; XIAO Han-bing; MO Jin-chuan; YANG Kang-hui

doi:10.16285/j.rsm.2017.03.018

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Early strength of stabilized soil affected by functional components

更新时间：2026-06-25

- Early strength of stabilized soil affected by functional components
- Vol. 38, Issue 3, Pages: 755-761(2017)
- 作者机构：
  
  中国人民解放军后勤工程学院化学与材料工程系,重庆,401331
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.03.018
  CLC： TU472.5
- Online First：05 June 2018，
  
  Published：2017
- 稿件说明：
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LIU Jin-ming, OU Zhong-wen, XIAO Han-bing, et al. Early strength of stabilized soil affected by functional components[J]. 2017, 38(3): 755-761.
DOI：

LIU Jin-ming, OU Zhong-wen, XIAO Han-bing, et al. Early strength of stabilized soil affected by functional components[J]. 2017, 38(3): 755-761. DOI： 10.16285/j.rsm.2017.03.018.

摘要

根据红黏土的特点，为解决其固化土早期强度低、水稳定性差等问题，提出了使用膨胀组分、早强组分、减薄双电层结构组分、防水组分等功能组分来提高硫铝酸盐水泥固化土的早期强度。通过单掺试验，优选出了硬脂酸铝、三乙醇胺、Fe(NO3)3和石膏作为土壤固化材料的功能组分，并通过正交试验，确定了功能组分的最优配方。在该配方下，固化土的7 d无侧限抗压强度达到了8.60 MPa。利用XRD、SEM等微观表征，对比分析了掺入功能组分前、后固化土的矿物组成以及微观形貌结构变化，结果表明：适量的功能组分掺入有利于高强、难溶具有膨胀性的矿物晶体生成，从而提高固化土早期强度，但功能组分掺量过高，由于矿物晶体过多膨胀作用以及憎水膜的阻碍作用，改变了固化土的联结方式，使其早期强度降低。

Abstract

To solve the problems of low early strength and poor water stability of stabilized red clay

the functional components including expansion component

early strength component

thin electrical double layer structure component

waterproof component are used to improve the early strength of stabilized soil by sulphoaluminate cement. Through the single doping tests

aluminum stearate

triethanolamine

Fe(NO3)3 and gypsum are selected as the functional components of soil stabilizer.

The optimal formula of functional components is further determined by orthogonal test. The unconfined compressive strength of stabilized soil can reach 8.60 MPa after curing 7 days using the optimal formula. By using XRD and SEM

the variations of mineral composition and microstructure of the stabilized soil are analyzed before and after adding functional components. The test results show that functional components used in moderation can contribute to the formation of insoluble mineral crystals with high strength and expansibility

so as to improve the early strength of stabilized soil. However

if the amount of functional components is too high

the early strength of stabilized soil decreases due to the altered connection way of stabilized soil induced by the excessive expansion of mineral crystal and the hindrance of hydrophobic membrane.

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Related Author

XIAO Han-bing

LIU Jin-ming

MO Jin-chuan

YANG Kang-hui

CAO Zhi-guo

ZHANG Ding-wen

LIU Song-yu

CAO Yang

Related Institution

School of Transportation, Southeast University

Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University

Key Laboratory of Soft Soils and Geoenvironmental Engineering of Ministry of Education, Zhejiang University

College of Architecture and Civil Engineering, Taiyuan University of Technology

Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology

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