摘要
沥青路面水损害病害类型主要包括松散、坑洞和唧浆等,沥青与石料的粘附性不足和混合料空隙率过大是造成沥青路面水损害的主要原因。试验表明,集料泥土污染对沥青混合料水稳性影响显著,沥青混合料的渗水临界空隙率为7.5%。根据试验结果,对现行规范中的某些规定和技术要求提出一些看法与意见。
Major types of moisture damage in asphalt pavement include raveling, pothole, etc. The dis tress resulted mainly from the absence of adhesion between asphalt and aggregate and oversize air void. Tests show that clay in fine aggregate affected the water stability of asphalt mixture markedly; the permeable critical air void is 7.5 %. On the basis of test results, some opinions and suggestions for current specification are prop osed.
出处
《中南公路工程》
2006年第2期96-98,123,共4页
Central South Highway Engineering
关键词
沥青路面
水损害
粘附性
病害特征
机理
临界空隙率
Asphalt Pavement
Moisture Damage
Adhesion
Distress Characteristics
Mechanics
critical air void
