• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Resilient Modulus of Freeze-Thaw Affected Granular Soils for Pavement Design and Evaluation. Part 1. Laboratory Tests on Soils from Winchendon, Massachusetts, Test Sections
【24h】

Resilient Modulus of Freeze-Thaw Affected Granular Soils for Pavement Design and Evaluation. Part 1. Laboratory Tests on Soils from Winchendon, Massachusetts, Test Sections

机译：冻融影响颗粒土的弹性模量用于路面设计与评价。第1部分。马萨诸塞州Winchendon土壤的实验室测试，测试部分

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This work is the first of a series of four reports about laboratory and field testing of various granular road and airfield subgrades. This report details the acquisition, testing and analysis of six soils from a test site in Winchendon, Massachusetts. Repeated load triaxial tests were done on frozen and thawed soils to characterize the variations in their resilient properties through out the seasons. Linear regression yielded empirical equations relating the resilient modulus to applied stress, unfrozen water content (for frozen soils), moisture tension (for thawed soils) and density. Equipment and test procedures (given in detail) were developed that allowed simulation in the laboratory of the gradual recovery of stiffness that occurs in the field after thawing. The resilient moduli were strongly dependent on soil state, dropping at least two orders of magnitude upon thawing. For all soils the moduli increased with increasing confining stress, generally decreased with increasing principal stress ratio, and increased with increasing moisture tension levels. The resilient moduli increased by a factor of approximately two as the materials recovered from the effects of a freeze-thaw cycle. This recovery process is well modeled as a function of soil moisture tension level. The stress sensitivity did not appear to be a function of the soil moisture tension level. The report also includes tabulations of all the repeated load triaxial test data.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号