本文選題：道路工程 + 粗粒鹽漬土��； 參考：《水利學(xué)報(bào)》2015年S1期

【摘要】：基于過5 mm篩法的易溶鹽含量配制方法,首先針對(duì)粗粒硫酸鹽漬土、粗粒氯鹽漬土開展溫度改變下的鹽脹規(guī)律試驗(yàn);其次針對(duì)粗粒硫酸鹽漬土、粗粒亞硫酸鹽漬土開展鹽分、土類、水及上覆荷載等條件改變下的鹽脹規(guī)律研究,結(jié)果表明:粗粒鹽漬土的鹽脹起脹溫度與降溫持續(xù)時(shí)間、含鹽量、初始密度正相關(guān),與含水率和附加荷載負(fù)相關(guān);氯離子可降低粗粒鹽漬土的起脹溫度,對(duì)其鹽脹量具有抑制作用;鹽脹敏感溫度區(qū)間,粗粒硫酸鹽漬土為-5℃~-10℃,粗粒亞硫酸鹽漬土為-10℃~-15℃;粗粒硫酸鹽漬土的起脹含鹽量約0.3%,粗粒亞硫酸鹽漬土的起脹含鹽量約0.5%;粗粒硫酸(亞硫酸)鹽漬土的容許含鹽量值基本在2%左右。
[Abstract]:Based on the method of preparing soluble salt content over 5 mm sieve, the salt expansion law of coarse sulphate saline soil was first tested under the change of temperature, and the salt content of coarse sulfite soil was studied. The results show that the salt swelling temperature of coarse saline soil is positively correlated with the duration of cooling, salt content, initial density, and negative correlation with water content and additional load. Chlorine ion can reduce the swelling temperature of coarse saline soil and inhibit its salt swelling, the sensitive temperature range of salt expansion is -5 鈩，

本文編號(hào)：1825892