應用研究 2024年 第53卷 第21期

DOI: 10. 7672 / sgjs2024210041

廢棄泥漿改性機理與工程應用研究

張慧樂1,丁顯坤2,楊發1,吳丹1,王述紅2

作者簡介：

張慧樂，高級工程師，E?mail:zhanghuile@ cribc. com

作者單位：

1.中國京冶工程技術有限公司，北京 100088; 2.東北大學，遼寧沈陽 110819

基金項目：

?遼寧省重點研發計劃（2019JH2 / 10100035）

摘要：

為妥善處理并利用巖土工程施工產生的廢棄泥漿，首先完成原材料選取和材料基本性能測試，然后進行多因素試驗設計，通過無側限抗壓強度試驗研究不同水泥和玄武巖纖維摻量對廢棄泥漿改性材料力學性能的影響，并利用掃描電鏡（SEM）試驗從微觀角度分析廢棄泥漿改性機理，最后依據試驗結果開展實際工程應用研究，驗證廢棄泥漿應用效果。試驗結果表明，摻加水泥和玄武巖纖維可有效改善廢棄泥漿改性材料力學性能，摻加玄武巖纖維后改性材料壓縮變形階段有效縮短；微觀上，水泥與泥漿顆粒形成膠結團粒，玄武巖纖維將膠結團粒和泥漿顆粒更有效地連接，形成更緊密的整體結構單元。

English：

In order to properly deal with and utilize the waste mud produced by geotechnical engineeringconstruction, the selection of raw materials and the basic performance test of materials are firstcompleted, and then the multi?factor test design is carried out. The influence of different cement andbasalt fiber content on the mechanical properties of waste mud modified materials is studied by unconfinedcompressive strength tests, and the modification mechanism of waste mud is analyzed from themicroscopic point of view by scanning electron microscope （ SEM ） tests. Finally, the practicalengineering application research is carried out according to the test results, and the application effect isverified. The test results show that the addition of cement and basalt fiber can effectively improve themechanical properties of waste mud modified materials, and the compression deformation stage ofmodified materials is effectively shortened after adding basalt fiber. Microscopically, cement and mudparticles form cemented agglomerates, and basalt fiber connects cemented agglomerates and mud particlesmore effectively to form a closer overall structural unit.