A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Physio-Chemical Evaluation of Asphalt-Aggregate Interactions
The durability of selected asphalt concrete components and mixtures from six projects were evaluated with the newly recommended net adsorption test and the more common ASTM D4867 (a modified Lottman), respectively. The net adsorption test was used to assess the durability of the adhesion of the asphalt to the aggregate surface in the presence of water. The ASTM D4867 method evaluated the retained strengths of compacted mixture resistance after freeze/thaw conditioning. The net adsorption results indicated at least two of the six projects could be susceptible to moisture related adhesion problems. The mixture testing indicated that three of the six projects had tensile strength ratios of less than 70 percent and could be expected to show some evidence of moisture related damage. The influence of conventional mix design parameters on the moisture sensitivity of asphalt concrete mixtures should be more thoroughly investigated prior to any consideration of the use of additives.
Physio-Chemical Evaluation of Asphalt-Aggregate Interactions
The durability of selected asphalt concrete components and mixtures from six projects were evaluated with the newly recommended net adsorption test and the more common ASTM D4867 (a modified Lottman), respectively. The net adsorption test was used to assess the durability of the adhesion of the asphalt to the aggregate surface in the presence of water. The ASTM D4867 method evaluated the retained strengths of compacted mixture resistance after freeze/thaw conditioning. The net adsorption results indicated at least two of the six projects could be susceptible to moisture related adhesion problems. The mixture testing indicated that three of the six projects had tensile strength ratios of less than 70 percent and could be expected to show some evidence of moisture related damage. The influence of conventional mix design parameters on the moisture sensitivity of asphalt concrete mixtures should be more thoroughly investigated prior to any consideration of the use of additives.
Physio-Chemical Evaluation of Asphalt-Aggregate Interactions
M. Stroup-Gardiner (author) / D. Newcomb (author)
1994
58 pages
Report
No indication
English
Construction Equipment, Materials, & Supplies , Highway Engineering , Transportation & Traffic Planning , Transportation , Road Transportation , Bituminous concretes , Physicochemical properties , Moisture content , Concrete durability , Test methods , Adhesion tests , Tensile strength , Adsorption , Performance tests , Aggregates , Research projects , Highway maintenance , Minnesota , Asphalt pavements , Net adsorption test , ASTM D4867 , SHRP(Strategic Highway Research Program)
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