市政技术2024，Vol.42Issue(3)：180-185,6.DOI:10.19922/j.1009-7767.2024.03.180
玄武岩纤维地质聚合物在软土固化中的力学性能试验研究
Experimental Study on Mechanical Properties of Basalt Fiber Geopolymer in Soft Soil Solidification
高松1
作者信息
- 1. 中铁十八局集团环保科技工程有限公司,天津 300350
- 折叠
摘要
Abstract
In order to solve the problems of insufficient strength and high brittleness of natural soil reinforcement by cement in cold regions,a fiber geopolymer was prepared for the reinforcement of soft soil and subgrade.Through un-confined compression,tensile and shear tests,the mechanical properties of different soil systems were compared and analyzed to revealing the microscopic reinforcement mechanism of fiber geopolymer by SEM microscopic char-acterization methods.The research results indicate that the compressive strength value of the geopolymer stabilized soil system is 725 kPa when the content of alkali activated binder is 13％;When the fiber content is 0.6％and the length is 4 mm,the mechanical properties of the fiber geopolymer system are the best;The tensile and shear strength of different soil systems are various,among which the fiber geopolymer system having the best one and undisturbed clay having the worst;SEM microscopic characterization results show that gel like aggregates are formed in fiber geopolymer stabilized soil.The research results can provide reference basis for the application and promotion of fiber geopolymers.关键词
地质聚合物/纤维/力学性能/微观分析/地基加固Key words
geopolymers/fiber/mechanical properties/microscopic analysis/foundation reinforcement分类
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高松..玄武岩纤维地质聚合物在软土固化中的力学性能试验研究[J].市政技术,2024,42(3):180-185,6.
