| 固化有机质淤泥试验研究 |
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| 引用本文： | 冯诚,王保田,李守德.固化有机质淤泥试验研究[J].岩土工程技术,2010,24(3):142-146. |
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| 作者姓名： | 冯诚 王保田 李守德 |
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| 作者单位： | 1. 江苏省交通科学研究院、江苏南京,210098
2. 河海大学岩土工程研究所、江苏南京,210098 |
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| 摘 要： | 淤泥固化技术是淤泥资源化的一个重要方法。当采用水泥基材料对有机质淤泥固化处理时，淤泥中的有机质严重影响了淤泥固化的效果。对此，笔者进行了固化有机质淤泥的试验研究，在分析有机质对淤泥固化效果影响机理的基础上，掺加不同外加剂改善有机质淤泥的固化效果，试验结果发现，碱性剂的加入会导致有机质的溶解，削弱淤泥的固化效果，粉煤灰的加入削弱了有机质对水泥水化的阻碍作用，有效提高了固化体的强度，采用水泥一粉煤灰一硫酸钠复合固化材料大幅度提高了固化淤泥的短期强度和长期强度，粉煤灰的加入提供了大量的钙离子，其掺量越大，固化淤泥无侧限强度后期增长率越大。
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| 关 键 词： | 有机质淤泥 固化 外加剂 水泥基材料 pH |
An Experimental Study on Solidification/Stabilization of Organic Silt |
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| Feng Cheng,Wang Baotian,Li Shoude.An Experimental Study on Solidification/Stabilization of Organic Silt[J].Geotechnical Engineering Technique,2010,24(3):142-146. |
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| Authors: | Feng Cheng Wang Baotian Li Shoude |
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| Institution: | 1. Jiangsu transportation Research Institute, Nanj ing 210098, Jiangsu, China ;2. Geotechnical Research Institute of Hohai University, Nanjing 210098, Jiangsu, China) |
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| Abstract: | Solidification technology plays a very important role for reuse of dredging. The organic matter in the silt remarkably influences the effect of solidification. In order to assess this, an experimental program of organic solidification was undertaken, the mechanical impact of the organic matter on the solidification was evaluated, the result showed that sodium leads to the organic matter＇s dissolution, which would weakened the solidification effect of the soil,and the fly ash could undermines the hindering effect of organic matter on the cement hydration, it effectly enhanced the strength of the soil, at last, a new composite additive was proposed, when treated with this, the short-term and longt-terrn strength was greatly increased, the fly ash provided large amount calcium ion the late growth rate was continuously increasing with the increase of the fly ash. |
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| Keywords: | pH |
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