Unsaturated characteristics of rammed earth.
Unsaturated characteristics of rammed earth.
复制标题
夯土的不饱和特性。
DOI：
10.1201/9780203884430.ch53
复制
发表时间：
2008
影响因子：
5.3
通讯作者：
L. Legrand
中科院分区：
文献类型：
--
作者：
P. Jaquin;C. Augarde;L. Legrand
夯土既是一种古老的建筑技术，也是该技术生产的材料的名称。由于其生态和可持续的属性，夯土在世界各地越来越受欢迎。夯实土墙是通过采用（通常）当地获得的土壤的分级混合物并以与混凝土类似的方式在模板之间压实混合物而形成的。然后拆除模板，留下坚实的土墙。对夯土的强度来源几乎没有科学的理解，迄今为止的设计一直采用经验方法。本文认为夯土是一种非饱和土，说明吸力是夯土强度的来源之一。对夯实土样品进行了实验室试验，包括无侧限压缩和巴西试验（测量强度）和滤纸试验（确定保水性）。试验表明，夯土的强度来源于吸力，并对古代夯土结构中吸力的大小作出了结论。
Rammed earth is both an ancient construction technique and the name for the material produced by the technique. Rammed earth is gaining in popularity around the world due to its ecological and sustainable attributes. Walls of rammed earth are formed by taking a graded mixture of (usually) locally-won soil and compacting the mixture between formwork in a similar manner to concrete. The formwork is then removed leaving a solid earth wall. There is little scientific understanding of the source of strength in rammed earth and design to date has used empirical approaches. In this paper we consider rammed earth as an unsaturated soil thus explaining one source of strength to be from suction. Laboratory tests have been carried out on rammed earth samples including unconfined compression and Brazilian tests (to measure strength) and filter paper tests (to determine the water retention properties). The tests all indicate that a source of strength in rammed earth derives from suction and conclusions are drawn as to their levels in ancient rammed earth structures.