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原文传递 SIGNIFICANCE OF "AS-CONSTRUCTED" HMA AIR VOIDS TO PAVEMENT PERFORMANCE FROM AN ANALYSIS OF LTPP DATA.

题名：	SIGNIFICANCE OF "AS-CONSTRUCTED" HMA AIR VOIDS TO PAVEMENT PERFORMANCE FROM AN ANALYSIS OF LTPP DATA.
作者：	Harrigan-ET
关键词：	Air-voids; Asphalt-concrete; Data-analysis; Databases-; Hot-mix-asphalt; Hot-mix-paving-mixtures; LTPP-Information-Management-System; Long-Term-Pavement-Performance-Program; Pavement-performance
摘要：	The principal objectives of National Cooperative Highway Research Program (NCHRP) Project 20-50(14), "LTPP Data Analysis: Significance of 'As-Constructed' AC Air Voids to Pavement Performance," were to (1) evaluate the use of long-term pavement performance (LTPP) data for determining the effect of as-constructed air voids on the performance of hot mix asphalt (HMA) pavements, (2) develop new or improved air voids content guidelines for optimum pavement performance, and (3) examine the effect of the level of construction control in the LTPP general pavement studies (GPS) and specific pavement studies (SPS) on the variability of as-constructed air voids. In carrying out these objectives, the research agency mainly relied on LTPP data classified as "Level E" in the LTPP Information Management System (IMS) database and contained in the IMS November 2000 Release 10.9. In general, accomplishment of these objectives was seriously hampered by a present lack of suitable data in the LTPP database. This digest briefly summarizes the type of data analysis used in support of each objective, describes the results of the analyses, and discusses the limitations of the data. The digest is organized as follows: Introduction (Background and Objectives); Research Approach (Tasks 1 through 4); Analysis of LTPP Data; and Conclusions and Recommendations.
总页数：	NCHRP Research Results Digest. 2002/09. (269) pp21 (7 Fig., 10 Tab., 6 Ref.)
报告类型：	科技报告