基于林绣贤法的SMA-16最佳油石比确定方法研究

Research on Optimal Ratio Determination of SMA-16 Based on Lin Xiuxian Method

林绣贤法采用体积分析法,建立混合料内部有效沥青、集料吸入沥青、残余空隙以及集料之间的关系,通过密度关系总结出最佳油石比的计算公式。依据林绣贤法,计算了SMA-16四组级配的最佳油石比,并通过路用性能试验来与计算法进行对比分析,结果表明林绣贤法在一定程度上能预估最佳油石比,但仍需要一些室内和现场试验来确定该方法的误差范围,来对林绣贤法的预估值进行修正,这样才会在工程实际中提高其应用价值。

By using volume analysis,Lin Xiuxian method has established the relationship between effective asphalt,inhalation asphalt,residual voids and aggregate,and has summaried the formula of optimal ratio by the density. Across the Lin Xiuxian method,the author calculates the optimal ratio of four gradings of SMA-16,and then compares the test result of road performance with calculation method. The result shows that this method can estimate the optimal ratio at a certain extent,but it still needs some tests indoor and outdoor to determine tolerance scope to amend the estimated result,thus enhance its value in engineering pratice.