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曾    晖¹  ,  刘通飞²  ,  汤嘉艺¹  ,  姜祥龙¹

( 1 .  五邑大学 土木建筑学院 ，广东 江门 529020 ;  2.  庄严建设（广州） 有限公司 ，广东 广州 511400)

摘   要：沿海地区软土含量过多时，无法支撑地面建设，研究固化剂对软土力学性能的改善效果对其现场 应用具有重要意义。采用水玻璃与氢氧化钠作为激发剂，矿渣和粉煤灰作为固化剂，研究不同材料掺量对广东 沿海地区砂性软土抗压强度的影响。结果表明： 当矿渣掺量超过 30% 后 ，矿渣对固化效果的影响变大， 固化土 抗压强度大幅度升高；随着激发剂掺量、水玻璃模数 、水胶比和软土含砂率的增加， 固化土抗压强度均先升高后降低，存在最佳掺量；固化土抗压强度峰值所对应的各物料掺量：激发剂掺量为 30% ,  水玻璃模数为 1 . 0 ,  水 胶比为 0. 25 ,  含砂率为 20% 。

关键词： 固化剂 ；复合作用 ；软土 ；力学性能

中图分类号：TU432           

文献标志码：A            

文章编号： 1005- 8249   (2024)  06- 0059- 04 

DOI:10. 19860/j.cnki.issn1005 - 8249.2024.06.011

 

ZENG Hui ¹  ,  LIU Tongfei² ,  TANG Jiayi ¹  ,  JIANG Xianglong¹

( 1 . School of Civil Engineering and Architecture ,  Wuyi University ,  Jiangmen 529020 ,  China;

2. Zhuangyan Construction  (Guangzhou)  Co. ，Ltd.  ，Guangzhou 511400 ,  China)

Abstract：Coastal areas are unable to support ground construction when there is too much soft soil content, and it is important to study the effect of curing agents on improving the mechanical properties of soft soil for its field application. Using water glass and sodium hydroxide as the exciter and slag and fly ash as the curing agent, the effects of different material admixtures on the compressive strength of sandy soft soils in coastal areas of Guangdong were investigated. The results showed that when the slag doping amount exceeded 30%, the influence of slag on the curing effect became larger and the compressive strength of cured soil increased substantially. With the increase of exciter dosage, water-glass modulus, water-cement ratio and soft soil sand content, the compressive strength of the cured soil all increased firstly and then decreased, and the optimum dosage existed. The peak compressive strength of cured soil corresponds to the dosing of each material: 30% of exciter, 1.0 of water glass modulus, 0.25 of water cement ratio and 20% of sand content.

Keywords: curing agent; compound effect; soft soil; mechanical property

*基金项目：广东省教育厅 2021  年度广东高校科研平台和科研项目特色创新项目（ 自然科学） (2021 KTSCX139) ;  2022 年度江门 市基础与应用基础研究重点项目  (JZ202214) 。

作者简介： 曾   晖  (1969—) ,   女 ，博士 ，教授 ，研究方向：建设工程管理 、隧道及地下工程。

通信作者：刘通飞  (1972—) ,  男 ，本科 ，高级工程师 ，研究方向：城市交通及基础设施。 

收稿日期：2024- 07- 03