Road performance of compound bio-reclaimed asphalt and mixture
DINCH Plasticizer was used to make a compound bio-regenerant with kitchen waste grease,and the best ratio of the compound asphalt regenerant was determined by three major indexes and Brookfield viscosity test.Under the conditions of adding regenerant and not mixing regenerant,different RAP(Re-claimed Asphalt Pavement)mixes were prepared and subjected to rutting test,low temperature bending damage test,water immersion Marshall test and freeze-thaw splitting test.The results showed that the con-ventional performance of recycled asphalt was restored to the level of the original asphalt when the ratio of DINCH plasticizer to kitchen waste grease was 0.4∶1.The low-temperature crack resistance and water sta-bility of asphalt mixture without compound bio-regenerative agent do not meet the specification require-ments under the condition that the RAP dose is 30％～50％;after the addition of regenerant,with the increase of RAP,recycled asphalt mixture of low-temperature crack resistance and water stability is re-duced,high-temperature stability can be improved,when the RAP dose of 30％,recycled asphalt mixture of low-temperature crack resistance and water stability with the new mix,high-temperature stability is bet-ter than the new mix asphalt.
万方数据
维普
