沥青路面水损害评价方法探究

水损害是影响沥青路面耐久性的重要因素,水损害产生的主要原因是沥青与集料的粘附性不足.详细介绍了国内外水损害评价方法及评价指标,分析了评价方法的优缺点及适用条件.提出了采用Na2CO3溶液代替水溶液进行浸水试验的方法,结果发现稳定度有原来的8.75～8.95 kN下降为7.00～7.15 kN,沥青的脱落比水溶液更加厉害,对水煮法与浸水马歇尔方法的改进进行了初步尝试.

Research on Evaluation Method for Mositure Damage in Asphalt Pavement

One of the primary factors affecting the durability of asphalt mixture is moisture damage. Moisture damage is generally manifested as loss of adhesion between asphalt and aggregate. The finds extensive literature review on moisture sensitivity test methods were presented in the paper. Each method has the advantage, disadvantage and different suitability. Water boiling test and retain Marshall stability test were improved (stability was dchanged from 8. 75 - 8. 96 kN to 7. 00-7. 15 kN) with sodium carbonate solution replacing water solution. The test condition is more rigorous and comparison of results is more evident.