The limestone rubble screening technology for wear course of asphalt pavement
LI Jingruo
TAN Wei
LUO Zhongxiang
MA Jin
Abstract：In order to explore the limestone aggregate screening technology for wear course of asphalt pavement,the crushing value,abrasion value,polishing value,mineral composition and dynamic anti-sliding performance for aggregates with different litholo-gy and blending technology were studied. Results show that there is a good linear correlation between the crushing value,abrasion value,polishing value and the blended proportion. Under the condition that the crushing value,abrasion value and polishing value of a single aggregate are known,the crushing value,the abrasion value and the polishing value of the blended aggregate with differ-ent lithology and different ratios can be predicted. The principle of selecting limestone by mineral composition is identified. First, select the aggregate which contains much dolomite and quartz,followed by the selection of relatively small amount of calcite. And clay mineral content should be less,even for 0. Based on the developed instrument,the Dμ of critical slip resistance screening val-ue of the aggregates is presented.
Keywords：road engineeringmechanical propertymineral compositiondynamic anti-sliding performancethreshold of anti-sliding performance
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 70-73 )