详情

原文传递 CONCRETE PAVEMENTS--PAST, PRESENT, AND FUTURE.

题名：	CONCRETE PAVEMENTS--PAST, PRESENT, AND FUTURE.
作者：	Pasko-TJ Jr.
关键词：	CONCRETE-PAVEMENTS; CONCRETE-PAVEMENT-DESIGN; CONCRETE-PAVEMENT-DURABILITY; HISTORY-; PORTLAND-CEMENT-CONCRETE; FUTURE-RESEARCH; CONCRETE-SLABS; CONCRETE-PAVEMENT-CONSTRUCTION; COST-EFFECTIVENESS; HIGH-STRENGTH-CONCRETES; TRAFFIC-DELAY-MINIMIZATION
摘要：	This article discusses the past, present, and future of concrete pavements in the United States. It is now difficult to trace the chronology of pavement design evolution, since most of the important basic research and development on pavements predates the age of computers. However, this older experimental work was meticulously done, despite the lack of modern electronics. If one has the opportunity to search the files, one can often find precedents for today's "innovations," such as variable thicknesses, stainless dowels, and beam and slab construction. In 1977, the author proposed a design concept called Pick A Slab Thickness--Protect It Forever (PAST-PIF), which shifted the emphasis from slab thickness to concentrating on seeing that all design assumptions were met, that the pavement was built as the designer intended with long-lasting materials, and that the pavement was protected and maintained to fulfill the design assumptions. The research needs for the future are being looked at, primarily from the materials and construction point of view. If portland cement concrete pavement construction is to stay competitive, ways must be found to place concrete more economically, with less delay to the traffic, and in a way that the pavements provide more assurance of a maintenance-free design life. The use of high-strength concrete, if it is to be economical, will probably require new slab configurations that are untested.
总页数：	Public Roads. 1998/07. 62(1) pp7-15 (8 Phot., 17 Ref.)
报告类型：	科技报告