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true

沥青路面抗剥离

使用 ELVALOY™ RET 防止剥离

想想您出行时的天气状况。也许季风季节时不时会带来大雨,无情地在道路上倾泻数周。可能在几个月的时间里从炎热的夏季过渡到寒冷的冬天。无论您住在哪里,您行驶的道路都必须能够承受潮湿和温度周期变化,尤其是冻融循环。

ELVALOY™反应性弹性体三元共聚物(RET)增强的沥青水泥在实验室测试中表明可以改善这些条件下的路面使用寿命,因为降低了水分敏感性,使得更好的沥青粘合剂粘附到骨料上。

Statz 冻融循环测试

Robert Statz 博士是早期研究使用 ELVALOY™ RET作为沥青聚合物改性剂的杜邦科学家之一。为了模拟室外风化的影响,他对粘合剂涂覆的骨料样品进行连续的冻融循环。

美国高速公路研究计划报告了改性沥青的防潮性能

美国联邦公路管理局使用汉堡车辙试验 (Hamburg WTD) 进行了一项研究,以确定11种沥青粘合剂对混合物湿度敏感性的影响。

汉堡 WTD 让钢轮滚过浸没在热水中的热拌沥青路面来进行测试。该设备使用两个往复式实心钢轮同时测试并排的两块路面,钢轮施加 685-N 的负载,平均速度为 1.1 km/h。

“统计排名......表明只有使用 ELVALOY™ RET 的混合物比 PG 70-22 对照混合物的表现好5%,”摘自“了解改性沥青粘合剂在混合物中的性能:评估湿度敏感性”(FHWA-RD-02-029),作者:Kevin D. Stuart、John S. Youtcheff 和 Walaa S. Mowager

印度,并排车道检查

在印度的一条高速公路上,使用 ELVALOY™RET 沥青改性剂制成的粘合剂与未改性的粘合剂一起使用。几年后对车道进行拍照,显示出粘合剂保留的明显差异。

快速链接