Development of a Hollow Cylinder Apparatus to investigate the shearing characteristics of asphalt

开发空心圆筒装置来研究沥青的剪切特性

• 批准号: EP/F028512/1
• 负责人: Stephen Frederick Brown
• 金额: $ 59.09万
• 依托单位: University of Nottingham
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FF028512%2F1
• 关键词: Development; Hollow; Cylinder; Apparatus; investigate

This experimental project will address the problem of wheel track rutting that develops in asphalt road pavements under repeated traffic loading. A new torsional Hollow Cylinder Apparatus will be developed to reproduce, more accurately than hitherto, the field loading regime in the laboratory, so that high quality measurements can be made of the permanent strain that accumates under cyclic loading. Collaboration with the University of California at Berkeley and at Davis will allow use to be made of their established but less accurate asphalt shear testing equipment using identical material. Pilot scale wheel tracking tests will be conducted in the Nottingham Pavement Test Facility to generate rutting performance data and use will be made of full scale test data from the Californian team. The outcome of the project is aimed at improving prediction methods for rut development in asphalt pavements and to assess the reliabilty of a simple practical test for use by industry to estimate the rut resistance of asphalts.

本实验项目将研究沥青路面在重复交通荷载作用下产生的车轮辙迹问题。将开发一种新的扭转空心圆筒装置，以比目前更准确地再现实验室中的现场加载状态，以便对循环加载下积累的永久应变进行高质量的测量。与加州大学伯克利分校和戴维斯分校的合作将允许使用他们已经建立的，但精度较低的沥青剪切测试设备，使用相同的材料。中试规模的车轮跟踪测试将在诺丁汉路面测试设施进行，以产生车辙性能数据，并将使用加州团队的全尺寸测试数据。该项目的成果旨在改进沥青路面车辙发展的预测方法，并评估一个简单的实际试验的可靠性，供工业使用，以估计沥青的车辙阻力。