IS 3018 (1977): Standard Silica Sand for Raw Material …
3.1 The sand shall be obtained by manual or mechanized washing and grading of high silica sand conforming to Grade A 300/150 of IS: 1987-19747. 4. CHEMICAL COMPOSITION 4.1 The chemical composition of standard sand shall conform to Grade A high silica sand as specified in IS : 1987-1974t. 5. MOISTURE CONTENT
