使用矩形图解法决定级配路面配合比是非常简便的,因为它不用计算就可得出配合出来。同时,还能照顾到各种材料粒径的配合情况,尤其是用来计算两种材料的配合比,更为迅速方便;如为三种材料配合时,可先求出第一、二两种材料的配合比,然后再求这混合料与第三种材料的配合比。材料配合比确定后还要检查混合料的塑性指数和液性限度,看看是否符合标准。用图解法求混合料的塑性指数和液性限度,系指通过0.5公厘筛孔的成份而说的。故首先须计算混合料所通过0.5公厘筛孔的成份,其属子A、D两类材料各为若干。 The use of rectangular graphical method to determine graded road mix is ​​very simple, because it can be calculated without cooperation out. At the same time, but also take into account the particle size with a variety of materials with the situation, in particular, is used to calculate the mix of two materials, more quickly and easily; such as the three materials with the first, you can find the first two Material mix, and then seek the mixture with the third material mix. After the material mix is ​​determined to check the plasticity of the mixture index and liquidity limits to see if it meets the standards. Using the graphic method to find the plasticity index and liquidity limit of the mixture, means through 0.5 mm sieve pore composition and said. Therefore, we must first calculate the mixture through the 0.5 mm sieve pore composition, its sub-A, D two kinds of materials each for a number of.