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- Title
基于厂拌热再生技术的集料密度影响规律.
- Authors
方杨; 张国民; 王水声
- Abstract
Based on central plant hot recycling, the influence law of density differences between reclaimed asphalt pavement (RAP) aggregate and new aggregate on the void ratio and gradation of the hot mixture was studied. The test method for mineral aggregate density of the RAP was improved. The hot recycling mix void ratio rule and generalized gradation rule were put forward. With fixed use level of the RAP and asphalt-aggregate ratio, the smaller the bulk density o£ mineral aggregate, the greater the porosity. On mixture gradation curve, the part of the curve affected more by aggregate with low density shifts to upper limit gradation, the part of the curve affected more by aggregate with high density is close to the lower limit gradation. The aggregate density fluctuations must be strictly controlled in asphalt pavement construction.
- Publication
Jianzhu Cailiao Xuebao: Journal of Building Materials, 2014, Vol 17, Issue 3, p548
- ISSN
1007-9629
- Publication type
Article
- DOI
10.3969/j.issn.1007-9629.2014.03.032