| NaOH对固化海涂淤泥强度和变形特性的影响研究 |
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| 引用本文： | 蒲凡,詹树林,赖俊英.NaOH对固化海涂淤泥强度和变形特性的影响研究[J].新型建筑材料,2011,38(5). |
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| 作者姓名： | 蒲凡 詹树林 赖俊英 |
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| 作者单位： | 浙江大学,建筑材料研究所,浙江,杭州,310058 |
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| 基金项目： | 浙江省重大科技专项重点工业项目 |
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| 摘 要： | 在海涂淤泥中掺入不同量NaOH改变淤泥孔隙溶液的pH值,再掺入等量水泥做固化试验.通过室内试验测试淤泥固化土的基本力学性质,探讨NaOH对仅用水泥固化淤泥的改善作用,研究无侧限抗压强度与NaOH掺量的关系和各个龄期淤泥固化土的应力一应变关系,并分析固化淤泥的微观结构特征.研究表明,NaOH掺量不大于0.8%时,孔隙溶液pH值的改变对Ca (OH)<,2>浓度影响很小,对固化强度的改善效果不明显;NaOH掺量大于1.6%时,随着掺量的增大,可以较大地提高淤泥固化强度,破坏应变较小,具有脆性破坏性质;NaOH掺量为3.2%时,90d强度约为不掺NaOH固化淤泥的2倍;微观结构反映出各种状态水化产物形成网状骨架并且填充孔隙,使得固化土具有一定的强度.
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| 关 键 词： | 淤泥固化土 无侧限抗压强度 应力-应变 微观结构 |
The study about the impact of NaOH on stabilized tideland sludge's strength and deformation |
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| PU Fan,ZHAN Shulin,LAI Junying.The study about the impact of NaOH on stabilized tideland sludge's strength and deformation[J].New Building Materials,2011,38(5). |
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| Authors: | PU Fan ZHAN Shulin LAI Junying |
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| Affiliation: | PU Fan,ZHAN Shulin,LAI Junying(Institute of Building Material,Zhejiang University,Hangzhou 310058,Zhejiang,China) |
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| Abstract: | The pH value of pore solution in tideland slugde was changed by adding different amounts of NaOH,then curing test was carried out by mixing with equal amount of cement.The basic mechanical data of stabilized sludge was determined by laboratory test.Discuss the improvement effect of NaOH on the pure cement-stabilized sludge,research on the relationship between unconfined compressive strength and the NaOH content and the stress-strain relations in all ages,and analysis the microstructure characteristics of th... |
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| Keywords: | stabilized tideland sludge unconfined compressive strength stress-strain microstructure |
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