Applicability of Modified Vialit Adhesion Test for Seal Treatment Specifications

The objective of this paper is to evaluate the Vialit Adhesion Test and its potential for use within performance oriented specifications for seal treatments. Multiple aggregates and emulsions are evaluated with existing test methods and with modified equipment and methods. The results indicate the current test tray is inadequate and that a thicker tray provides better results. Conditioning that incorporated either freeze times between 4 to 8 hours and/or freeze thaw cycles were also found to be improvements to the current conditioning methods. The specified mass of the steel spheres used during the test may be too restrictive in that more economical spheres were tested and did not show differences in aggregate loss.

改性乳化沥青的制备及其应用研究

随着我国现在的车流量不断增多,每年道路的受损情况愈加严重,许多沥青道路都需要进行维修和养护,以延长道路的使用寿命,保障道路在运营期间的安全。为了降低道路运营成本,提高道路使用质量,有必要研究一种高性能的改性沥青,通过提高沥青的质量来促进道路工程的可持续发展。为此,文章从改性乳化沥青存在的必要性出发,以聚合物改性乳化沥青为研究对象,对这种改性乳化沥青的制备及其应用展开了讨论,介绍了3种聚合物改性乳化沥青的制备工艺,并对聚合物改性乳化沥青在道路工程中实际应用的有关要点进行了研究,意在为我国聚合物改性乳化沥青的研究提供参考。