土工基础

›› 2019, Vol. 33 ›› Issue (4): 515-518.

• 工程实录 • 上一篇    下一篇

GGBS固化土在不同龄期下的无侧限抗压强度研究

李雨霏，左双英   

  1. （贵州大学资源与环境工程学院，贵阳 550025）
  • 收稿日期:2018-11-22 修回日期:2018-12-04 出版日期:2019-08-20 发布日期:2019-08-16
  • 通讯作者: 左双英（1977-），女，教授，研究方向为地质工程和岩土工程。
  • 作者简介:李雨霏（1996-），女，硕士研究生，研究方向为地质工程。
  • 基金资助:

    贵州省科学技术厅社会发展科技攻关项目(黔科合支撑［2017］2866)；贵州省科技平台及人才团队计划项目（黔科合平台人才［2017］5402号）

Experimental Study on Unconfined Compression Strength of Different-age Lacustrine Soft Soil Stabilized by GGBS

LI Yufei, ZUO Shuangying   

  1. (College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025)
  • Received:2018-11-22 Revised:2018-12-04 Online:2019-08-20 Published:2019-08-16

摘要： 湖积软土在合肥滨湖新区较为常见，进行工程建设时需要充分考虑湖积软土影响，对其采取科学化的固化处理。以GGBS（Ground Granulated Blastfurnace Slag，粒化高炉矿渣）作为固化剂固化合肥湖积软土，通过对合肥滨湖地区软土进行物理力学试验，并将不同掺入比(8%GGBS, 14%GGBS)的GGBS固化土养护不同龄期(3 d,7 d,28 d)后测其无侧限抗压强度，分析GGBS固化土在不同养护龄期下其无侧限抗压强度的变化规律。结果表明GGBS的加入使得固化土的抗压强度有了显著的提高，并且在一定范围内随着GGBS掺入比的提高、养护时间的增加，其抗压强度也会大大提高。

关键词: 软土, 无侧限抗压强度, GGBS, 龄期

Abstract: Lacustrine deposited soft soils are widely encountered in the Binhu New District, Hefei City. Soil improvements are required for the new engineering development. This paper presents a new soil improvement method using Ground Granulated BlastFurnace Slag (GGBS) as an additive to solidify the lacustrine deposited soft soils. Extensive laboratory tests were performed on testing the unconfined compressive strength of the soil GGGBS mixed samples with different ratios (8% GGBS & 14%BBGS) and different curing ages (3 d, 7 d and 28 d). The results indicate that, within a practical mix ratio, the addition of GGBS will increase the strength of mixed soils and the strength also increases with the sample curing age.

Key words: soft soils, unconfined compressive strength, ggbs additives, curing age