This topic have done a lot of the thickness of the aggregate screening test and density test, density, water absorption, porosity of the aggregate data. Then draw up the grading curve of mix design, the Marshall test, get the best aggregate ratio.

This subject has done a lot of weight sets the density of the screening tests and pilot, set the density, water absorption, and clearance rate, etc. And then the level curve for the design, with more than a Marshall test, get the best oil stone.

This topic has performed the massive thick fine aggregate screening experiment and the density experiment, obtains data and so on aggregate density, water-absorptivity, percentage of voids.Then draws up the grading curve to carry on the mixture ratio design, carries on Marshall to experiment, obtain

This topic has done a great deal of coarse and fine aggregate density experiment of screening tests and get aggregate data such as density, water absorption, rate of gap. Mix design and prepare gradation curves, Marshall tests, the best stones.

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