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公路月刊1964年7期发表了“沥青表面处治的材料性质和用量问题”一文,给我们很大启发,特别是作者提出沥青与石料的体积比为1:10和煤沥青做底层,石油沥青罩面的措施,在北京地区来说是行之有效的。但有以下几点特提出商榷: (一)作者提到“如果石料为一级而其颗粒均匀度是1:2或1:1.5,而最小颗粒大于10毫米,则表面处治的使用期限将大大提高”。为了使各种规格材料都能用上,我们认为对底层或中层石料的均匀度,可放宽到1:2.5。 (二)作者建议采用V=0.4PVS~(1/3)公式计算沥青
Highway Monthly Issue 7 of 1964 published a “asphalt surface treatment of material properties and dosage issues,” a great inspiration to us, in particular, the author put forward the asphalt and stone volume ratio of 1:10 and coal tar pitch to do the bottom of the oil bitumen cover The measures in the area are effective in Beijing. However, the following points are put forward: (1) The author mentions that “if the stone is a grade and its particle uniformity is 1: 2 or 1: 1.5, and the minimum particle size is greater than 10 mm, the surface treatment life will be significantly greater improve”. In order to make all kinds of materials can be used, we think the uniformity of the bottom or middle stone, can be relaxed to 1: 2.5. (B) The author recommends the use of V = 0.4PVS ~ (1/3) formula to calculate asphalt