Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Study of Re-Use of Moisture-Damaged Asphalt Mixtures
The state of South Carolina currently utilizes 15% reclaimed asphalt pavement (RAP) in its recycled mixtures. It is not known whether the material properties of stripped asphalt pavement would facilitate higher RAP percentages and reduce further stripping. In the research project, procedures were established for determining whether an asphaltic concrete mixture has been moisture-damaged and, if so, to what extent. In addition, the feasibility of increasing the amount of RAP in moisture-damaged recycled mixtures used for a binder course, and the effects of various aggregate and asphalt cement sources used in mixtures containing recycled moisture-damaged materials were evaluated. The results of the research project indicate that recycled mixes containing 15%-20% RAP do not exhibit more moisture susceptibility than similar virgin mixes containing no RAP. This was found to be true even when the RAP was from a pavement which had been shown to have already suffered moisture damage. In general, the results indicate that recycling of moisture damaged pavements does not create increased risk of moisture damage in the recycled pavement. This finding is based on the use of a relatively small percentage of RAP in only binder mixes.
Study of Re-Use of Moisture-Damaged Asphalt Mixtures
The state of South Carolina currently utilizes 15% reclaimed asphalt pavement (RAP) in its recycled mixtures. It is not known whether the material properties of stripped asphalt pavement would facilitate higher RAP percentages and reduce further stripping. In the research project, procedures were established for determining whether an asphaltic concrete mixture has been moisture-damaged and, if so, to what extent. In addition, the feasibility of increasing the amount of RAP in moisture-damaged recycled mixtures used for a binder course, and the effects of various aggregate and asphalt cement sources used in mixtures containing recycled moisture-damaged materials were evaluated. The results of the research project indicate that recycled mixes containing 15%-20% RAP do not exhibit more moisture susceptibility than similar virgin mixes containing no RAP. This was found to be true even when the RAP was from a pavement which had been shown to have already suffered moisture damage. In general, the results indicate that recycling of moisture damaged pavements does not create increased risk of moisture damage in the recycled pavement. This finding is based on the use of a relatively small percentage of RAP in only binder mixes.
Study of Re-Use of Moisture-Damaged Asphalt Mixtures
S. N. Amirkhanian (Autor:in) / J. L. Burati (Autor:in)
1992
231 pages
Report
Keine Angabe
Englisch
Construction Equipment, Materials, & Supplies , Highway Engineering , Solid Wastes Pollution & Control , Hot mix paving mixtures , Recycling , Asphalt pavements , Highway maintenance , Tensile strength , Statistical analysis , Highway design , Aggregates , Binders(Materials) , Bituminous concretes , Road materials
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