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砂-复合固化淤泥路用强度特性试验研究 被引量:2

Experimental study on road strength characteristics of sand composite solidified silt road
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摘要 为提高传统水泥、石灰固化淤泥路用力学性能指标,改善其工程特性,探究砂-复合传统固化淤泥的可行性。本文通过单掺以及正交试验方法研究砂复合固化淤泥强度影响规律。试验结果表明:无论河砂还是海砂复合后的固化淤泥7 d无侧限抗压强度都得到明显提升,12%左右掺量时海砂复合固化淤泥早期强度可以达到1.39 MPa,河砂复合固化淤泥可达到1.35 MPa。且正交试验显示海砂掺量、压实度、龄期与固化淤泥抗压以及劈裂强度都呈正相关变化,主次顺序为:龄期>压实度>海砂掺量,三因素对固化淤泥抗压强度影响都十分显著。本文结论对实际工程应用具有重要参考价值。 This paper aims to improve the mechanical performance indexes of traditional cement and lime solidified silt,improve their engineering characteristics,and explore the feasibility of sand composite traditional solidified silt.In this paper,the influence of sand composite on solidified silt strength is studied by single mixing and orthogonal test.The test results show that the 7 d unconfined compressive strength of the solidified silt after compounding of both river and sea sand was significantly improved.At the content of about 12%,the early strength of the compound sea sand silt can reach 1.39 MPa and the compound river sand silt can reach 1.35 MPa.In addition,the orthogonal test showed that the amount of sea sand,degree of compaction and age had positive effect on the compression strength and splitting strength of the solidified silt with the order age,compaction degree and sand content.The influence of three factors on the compressive strength of solidified silt is very significant.The conclusion of this paper has important reference value for practical engineering applications.
作者 柴芮祥 吴恺 崔锦梅 王继成 宋春霞 CHAI Rui-xiang;WU Kai;CUI Jin-mei;WANG Ji-cheng;SONG Chun-xia(College of Civil Engineering,Shaoxing University of Arts and Science,Shaoxing 312000,China;Zhejiang Engineering Survey and Design Institute Group Co.,Ltd.,Ningbo 315000,China;Ningbo University of Technology,Ningbo 315211,China)
出处 《地基处理》 2020年第6期471-477,共7页 Journal of Ground Improvement
基金 国家自然科学基金(51508283)。
关键词 砂复合固化淤泥 正交试验 力学性能 提高 sand compound solidified sludge orthogonal test mechanical properties improve
作者简介 柴芮祥(1995—),男,山西运城人,硕士研究生,主要从事土木工程方面的研究。E-mail:394014797@qq.com;通讯作者:王继成(1975—),男,安徽宣城人,博士,副教授,硕士生导师,主要从事土木工程方面的教学和研究。E-mail:wjc1818@zju.edu.cn
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