亚性粘土(简称亚粘土)也叫西北黄土,分布在我国长城以南、秦岭以北、青海以东、太行山以西,包括甘肃、陕西、河南、山西等省以及山东、辽宁、新疆、青海的部分地区,有广阔的天然资源。亚粘土具有干时强度高、浸水后易膨胀、软化、湿陷,并具有粘聚力、可塑性和收缩性。我区十几个小型预制构件厂,以前大多采用废机油作隔离层,现全部改用亚粘土(黄土)作隔离层,加快了施工进度,提高了产品质量,受到了用户普遍欢迎。 Sub-clay (abbreviated as sub-clay) is also called northwest loess and is distributed in the south of the Great Wall of China, north of the Qinling Mountains, east of Qinghai, west of the Taihang Mountains, including Gansu, Shaanxi, Henan, Shanxi, and Shandong, Liaoning, Xinjiang, and Qinghai. In some areas, there are vast natural resources. The clay has a high strength when dry, easily swells after being immersed in water, softens, collapses, and has cohesion, plasticity and shrinkage. More than a dozen small prefabricated components factories in our district used waste oil as the isolation layer, and now they all use sub-clay (loess) as the isolation layer to speed up the construction progress and improve the quality of products, which has been generally welcomed by users.