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原文传递 Acoustic and Structural Dynamic Diagnostic Evaluation of RIPRAP.

题名：	Acoustic and Structural Dynamic Diagnostic Evaluation of RIPRAP.
作者：	niezrecki, d. avitabile, p. tavilla, p. buaka, p.
关键词：	emission, rocks, florida, civil engineering, shores, mineralogy, porosity, grain size, weighting factors, regression analysis
摘要：	Acoustic impact-emission tests, Windsor Pin System(Trade Name) tests and impact frequency response functions are performed on Florida rock samples to identify causal relationships existing between measured responses and samples' petrographic characteristics. Regression analysis is used to relate measured responses with aggregate properties strongly affected by chemical and physical weathering. Aggregate properties such as mineralogy, porosity, and grain size are identified in thin section analyses performed by consultant geologists. The identification of causal relationship is necessary to satisfy a transfer function model of a durability test for aggregate used in civil engineering applications, namely bank and shore protection. Strong relationships are shown to exist between Windsor Pin System(Trade Name) measurements, impact frequency response functions and some aggregate properties for samples originating from the same quarry. Similarities and differences in the relationships are used to evaluate the feasibility of the applied methods as durability assessments and present considerations for future research of aggregate performance. Petrographic weighting factors are examined in the report to compare previously attempted methods of evaluating aggregate durability with those studies by researchers at UMass Lowell. These weighting factors are formulated by a consultant hired for the purposes of reporting sample petrography and are assigned based on his observations and experiences with Florida aggregates. / NOTE: Final rept. / Supplementary Notes: Sponsored by Florida State Dept. of Transportation, Tallahassee. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
总页数：	u0723；308p
报告类型：	科技报告