快速加固吹填泥浆的试验研究与分析

Experimental research and analysis of quick strengthening serous fluid of dredger fill

为了研究利用外掺剂加快吹填泥浆的沉积落淤问题,找到能够使吹填土尽快地从泥浆状态转变为具有一定承载力的地基方法,将吹填泥浆中分别加入水泥、生石灰、水泥和生石灰混合剂,通过沉降柱试验模拟了外掺剂作用下吹填泥浆的落淤、自重固结、预压下强度增长等过程,并从粒度成分、矿物成分、和微观结构方面进行了加固机理的分析,从而在吹填的同时对吹填泥浆进行加固。结合处理前后相关试验结果的对比分析发现,外掺剂能够加速吹填泥浆的落淤、固结及强度增长。

In order to investigate the sedimentation acceleration of serous fluid of dredger fill under the action of the additive and to find a method which can quickly change the serous fluid of dredger fill to foundation with bearing capacity, settlement test was conducted in the acryl glass vessel to simulate the subsidence and consolidation of serous fluid of dredger fill which was mixed respectively with cement, calcined lime and the mixture of cement and lime. Moreover, the mechanism was analyzed from granulometric composition, mineralogical analysis and microstructure. The basis for quick strengthening of the dredger fill was provided. By the comparison of the test result before and after the treating, it was found that the additive had the ability to accelerate consolidation and strengthen serous fluid of dredger fill.