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曾    暉¹  ,  劉通飛²  ,  湯嘉藝¹  ,  姜祥龍¹

( 1 .  五邑大學 土木建筑學院 ，廣東 江門 529020 ;  2.  莊嚴建設（廣州） 有限公司 ，廣東 廣州 511400)

摘   要：沿海地區軟土含量過多時，無法支撐地面建設，研究固化劑對軟土力學性能的改善效果對其現場 應用具有重要意義。采用水玻璃與氫氧化鈉作為激發劑，礦渣和粉煤灰作為固化劑，研究不同材料摻量對廣東 沿海地區砂性軟土抗壓強度的影響。結果表明： 當礦渣摻量超過 30% 后 ，礦渣對固化效果的影響變大， 固化土 抗壓強度大幅度升高；隨著激發劑摻量、水玻璃模數 、水膠比和軟土含砂率的增加， 固化土抗壓強度均先升高后降低，存在最佳摻量；固化土抗壓強度峰值所對應的各物料摻量：激發劑摻量為 30% ,  水玻璃模數為 1 . 0 ,  水 膠比為 0. 25 ,  含砂率為 20% 。

關鍵詞： 固化劑 ；復合作用 ；軟土 ；力學性能

中圖分類號：TU432           

文獻標志碼：A            

文章編號： 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

*基金項目：廣東省教育廳 2021  年度廣東高校科研平臺和科研項目特色創新項目（ 自然科學） (2021 KTSCX139) ;  2022 年度江門 市基礎與應用基礎研究重點項目  (JZ202214) 。

作者簡介： 曾   暉  (1969—) ,   女 ，博士 ，教授 ，研究方向：建設工程管理 、隧道及地下工程。

通信作者：劉通飛  (1972—) ,  男 ，本科 ，高級工程師 ，研究方向：城市交通及基礎設施。 

收稿日期：2024- 07- 03