生石灰和水泥混合处理吹填土的试验研究

随着中国东南沿海地区经济的迅速发展,土地资源不足的问题显得日益突出,人工吹填造地技术为解决这一问题提供了新的思路。吹填造地关键问题之一是要缩短吹填泥浆的固结的时间,为此在室内进行了沉降柱模拟试验,试图寻找一种在吹填的同时进行加固的方法。在沉降柱试验中发现,用水泥作为添加剂对吹填泥浆进行加固处理,其加固效果不如用水泥和石灰混合材料添加剂的加固效果。通过对两种添加方式的土样进行工程地质性质对比和结构性分析及其他一些物理化学试验结果分析,初步找出了加固效果差异的原因。

CONSOLIDATION TEST AND STUDY ON THE TREATMENT OF DREDGE FILL WITH CEMENT AND LIME

With the development of economy in coastal areas of Southeast China, the problem of land lacking becomes prominent. A technique for land with dredge fill is a new way to solve the problem. In order to reduce time of consolidation of dredge fill, we made a sedimentation test of dredge fill and tried to find a method for consolidating the dredge fill while dredging. During the test it was found that the result of consolidation with mixed cement with lime is better than that only with cement. Comparing the engineering geological properties of soil samples and analyzing the structure of soil samples and other results of physical and chemical tests, we found the causes for different of consolidation results, so we can provide a more economical method to consolidate foundation of dredger fill.