河南信阳市赵家桥立交工程路基地下水位高,路基填土低,有的地段填土高出地下水位仅0.6米,若采用石灰稳定土,由于地下水位太高,石灰稳定土在潮湿环境里不易硬化,难于保证质量,加之石灰单价又高,使用不经济,为了寻求更好的代用材料,我们从当地的实际出发,濒河流经信阳市,有丰富且便利的砂源,因此采用水泥稳定砂土来代替石灰稳定土,获得了良好效果,为此介绍如下: 为了弄清水泥稳定砂土的性能和寻求最佳的配比,做了以下的试验。 1.原材料试验 (1) 水泥系信阳水泥厂生产的大别山牌325号矿碴水泥 (2) 轻砂壤土红色轻砂壤土,其颗粒 Henan Zhaojiaqiao Interchange project embankment high ground water level, subgrade fill low, and some areas filled with groundwater level is only 0.6 meters above ground, if the use of lime stabilized soil, the groundwater level is too high, stable lime soil in the humid environment is not easy to harden , Difficult to ensure the quality, combined with the lime price is high, the use of uneconomical, in order to seek better alternative materials, we proceed from the local reality, the river through Xinyang City, rich and convenient source of sand, so the use of cement stabilized sand To replace the lime stabilized soil, obtained good results, this is described as follows: In order to clarify the performance of cement stabilized sand and seek the best ratio, the following test was done. 1. Raw material test (1) Cement Department Daxarshan Cement Co., Ltd. 325 cement ballast cement (2) Light sandy loam Red light sandy loam, its particles