Abstract
This project made a study on the properties and getting pressure on material surface layers and case study work and through skin layer in accordance with Department of highways. Thai country. By collecting samples of soil from the land mine ban Huai source transfer. Amphoe rattaphum, Songkhla, and asphalt cement sample type AC 60-70 used in Highway Department. Learn how to test and analyze the test results and materials to be used, is suitable for use in applications more efficiently and is suitable for most.
For example, Earth's surface layer for the job. Bring quality improvement by cement type ponlaen 1 by 3, 5, 7, and quantity, the percentage by weight of dry soil. Use CBR test for basic properties and to compare strength is being received. Test results, it appears that more cement is made up and increase CBR cement suitable for improving the quality of soil cement is equal to 3 percent, which gave up 142.5 percent right up to CBR is used in surface layer on.
Sample asphalt cement type AC 60-70. use common properties and design of mixture for asphalt concrete hot mix types (Hot Mix) General features test results appear to pass based on the requirements of the proper Department of highways implemented. Best properties of asphalt concrete: stability is equal to the value of £ 2457, flow value. Is equal to 15 percent, up a cent of the air gap. Is equal to 3.4 per cent, the percentage of the gap between the total mass of particles? Is equal to 16 per cent, the percentage of available space was replaced with asphalt? Is equal to the 78.8 percent and the density of asphalt concrete is equal to 2.464 grams per milliliter.