The study of engineering properties of laterite soil in Nong Khai Province

Abstract

This project aims to study the engineering properties of laterite soil in Nong Khai Province. By using later soil from 3 soil pits, namely, clay pits within Mueang Nong Khai District, Tha Bo District, and Phon Phisai District. Then the soil is crushed and exposed to sunlight to reduce humidity subsequently, soil classification testing was carried out in accordance with ASTM D-422. Soil modified compaction testing of 501.2-2545. Laterite soils in Mueang Nong Khai District, Tha Bo District and Phon Phisai District had Liquid Limit values ​​of 42.37, 36.51, and 37.03 % Plastic Limits were 3.17, 32.87, and 32.57 respectively, the engineering properties of the three soils conforms to the soil properties according to the standard for the underlayment material of Department of Public Works and Town & Country Planning 2103-57 (standard 2103-57). while modified compaction test gave maximum moisture content were 11.40, 12.36, and 11.64 %, respectively, while the highest dry density was 2.11, 2.10, and 2.10 g/cm³, respectively.