ABSTRACT
In the 1940s, the soil test methods began to be standardized. In 1942, the American Association of State Highway and Transportation Officials (AASHO) established standards for test methods, apparatuses and physical properties of soil. In 1948, the United Kingdom issued the first test method (BS1377: 1948) of soil for civil engineering. In 1956, the Ministry of Water Resources of the People’s Republic of China issued China’s first Specification of Soil Test. In 1974, the International Society for Rock Mechanics published the suggested method for rock tests.
