A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Water Sensitivity: Binder Validation
The study was part of the Strategic Highway Research Program (SHRP) A-003A contract undertaken as an interim evaluation of the hypotheses concerning the influence of binder properties on the moisture susceptibility of asphalt-aggregate mixes. Thirty-two mixes using eight asphalts and four aggregates from the Materials Reference Library (MRL) were used to fabricate roller-compacted slabs from which specimens were sawed or cored. These mixes were tested by four procedures: (1) Environmental Conditioning System (ECS), (2) Oregon State University (OSU) Wheel Tracker, (3) SWK Pavement Engineering/University of Nottingham (SWK/UN) Wheel Tracker, and (4) Net Adsorption Test (NAT). The ECS was the only test to compare dry-to wet-conditioned mixes, while the two wheel trackers tested only wet-conditioned mixes. The NAT was not directly comparable because it considers only adhesion. The two rutting tests provided results that were similar to the A-002A hypothesis, but did not confirm the ECS results. It was concluded that, for water-sensitivity, asphalts or aggregates could not be ranked alone but that combinations or pairs were more appropriate because of strong interactions. (Copyright (c) 1994 National Academy of Sciences.)
Water Sensitivity: Binder Validation
The study was part of the Strategic Highway Research Program (SHRP) A-003A contract undertaken as an interim evaluation of the hypotheses concerning the influence of binder properties on the moisture susceptibility of asphalt-aggregate mixes. Thirty-two mixes using eight asphalts and four aggregates from the Materials Reference Library (MRL) were used to fabricate roller-compacted slabs from which specimens were sawed or cored. These mixes were tested by four procedures: (1) Environmental Conditioning System (ECS), (2) Oregon State University (OSU) Wheel Tracker, (3) SWK Pavement Engineering/University of Nottingham (SWK/UN) Wheel Tracker, and (4) Net Adsorption Test (NAT). The ECS was the only test to compare dry-to wet-conditioned mixes, while the two wheel trackers tested only wet-conditioned mixes. The NAT was not directly comparable because it considers only adhesion. The two rutting tests provided results that were similar to the A-002A hypothesis, but did not confirm the ECS results. It was concluded that, for water-sensitivity, asphalts or aggregates could not be ranked alone but that combinations or pairs were more appropriate because of strong interactions. (Copyright (c) 1994 National Academy of Sciences.)
Water Sensitivity: Binder Validation
T. V. Scholz (author) / R. L. Terrel (author) / A. Al-Joaib (author) / J. Bea (author)
1994
111 pages
Report
No indication
English
Construction Equipment, Materials, & Supplies , Highway Engineering , Transportation & Traffic Planning , Transportation , Road Transportation , Hot mix paving mixtures , Binders , Moisture , Asphalt pavements , Pavement conditions , Aggregates , Road materials , Asphalts , Highway maintenance , Test methods , Physical properties , Water sensitivity
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