详情

原文传递 GRAA Winner Profile: preserving pavement on the Pacific Coast Highway

题名：	GRAA Winner Profile: preserving pavement on the Pacific Coast Highway
正文语种：	eng
摘要：	This is the story of a frequently travelled 35km section of Highway 1. stretching through the heart of Los Angeles county from Seal Beach north all the way through to Manhattan Beach. This 35km section of Highway 1 serves as a vital arterial roadway for the county, carrying more than 70,000 vehicles/day, spanning to a width of 7-8 lanes and consisting of more than 210 lane km of pavement surface. Moreover, this section of Highway 1 serves as the primary conduit to local oil fields, and one of the largest industrial ports in the world. VSS International was employed to take a progressive approach of applying a pavement preservation strategy to extend pavement life, improve safety and energy efficiency at reduced price and material recycling. The treatment chosen for this project was Type Ⅲ slurry seal. The principal materials used to create a slurry seal are crushed aggregate, asphalt emulsion and fillers, which are mixed on the project site according to a laboratory designed mix. This project was specifically designed with a Type Ⅲ aggregate, which is coarser, allowing for a heavier application rate that can address and correct more severe surface defects and improve the skid resistance. What set this slurry seal apart from typical slurry seals was the requirement that the materials be placed at night during the cooler coastal conditions, because of the heavy daytime traffic loads on this stretch of highway. VSS International engineered a formulation that met the placement and performance challenges of the project. The finished product was high-performance slurry seal material that would allow the product to cure quickly to allow the reopening for traffic prior to the start of the morning commute.
出版年：	2021
期刊名称：	World highways
卷：	30
期：	3