The bituminous mixture ratio design for high-speed loop bend surface of proving ground
YU Fangying
ZHANG Jianting
ZHAO Zhanghua
Abstract：Five different mixtures of AC-25 are adopted to test which simulate the inclined plane of bend surface for high-speed loop in laboratory. Through the test,in order to avoid slipping and distortion of the mixture in the inclined plane which has an angle of 70 degrees with the horizontal plane,the following conclusions are drawn:for AC-25,the pass rate of 4.75 mm sieve must be more than 50%,the pass rate of 2.36 mm sieve must be about 40%,the curve have to close to the upper limit as speci-fied in standard JTG F40—2004 "Technical Specifications for Construction of Highway Asphalt Pavements",the middle and low limit can't meet requirements. Finally,confirmed by engineering,this ratio limit is feasible.
Keywords：high-speed loopbend surfaceangle of transverse superlevationmixture ratiobridge type paving
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：3( 26-28 )