A method for calculating the amount of crushed stone in the crushed stone seal

Abstract

The invention discloses a method for calculating the amount of crushed stones in the crushed stone seal layer, each crushed stone in the crushed stone seal layer is approximately regarded as a sphere (the diameter of the sphere is taken as the median value d of the particle size range of the crushed stones, and the radius r =2 / d, unit cm), according to the gravel's own density ρ (g / cm 3 ), the mass m(g) of a single crushed stone can be approximated; 2 ) plane, according to the maximum cross-sectional area S′ of the approximate sphere, the total number N of spheres required to cover a unit area can be calculated; since the crushed stones in physical engineering are not regular spheres, and the crushed stones are in contact with the crushed stones There is a certain gap between each other, so the calculated mass m of a single gravel and the total number N of spheres required to cover a unit area need to be corrected, and the correction coefficients are K 1 、K 2 ; Then calculate the consumption of gravel in the gravel seal according to the following formula: M=10.5K 1 K 2 ρr, where M is the paving unit area (1m 2 ) the mass of gravel required, in kg. The invention effectively solves the problem of determining the amount of crushed stones in the crushed stone seal layer, and can perform accurate quantitative calculations for crushed stones with different particle sizes, thus avoiding determination through tedious tests, and the calculation is simple.

Description

technical field [0001] The invention relates to the field of civil engineering materials, in particular to the calculation of the amount of crushed stone in the crushed stone seal layer. Background technique [0002] Due to a series of excellent properties such as good waterproof performance, unique interlayer drainage function, high-strength interlayer adhesion and shear resistance, and good crack resistance, the crushed stone seal is currently widely used in my country. . In the case of a certain amount of asphalt, if the amount of crushed stone is too much, it will lead to an increase in cost, and if the amount of crushed stone is too small, it will lead to oily and other diseases on the road surface. Therefore, the determination of the amount of crushed stone in the crushed stone seal is the premise to ensure the quality of the crushed stone seal. At present, the determination of the amount of crushed stone in the crushed stone seal is based on the empirical determinati...

AI Technical Summary

Problems solved by technology

It can be seen from the above calculation process that although the calculation results of this method are relatively accurate, a large number of experiments are required to determine some parameters in the formula, and the workload is more numerous than the former, and each step in the test process must be rigorous. , any problem in any step will affect the final test results

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