1. Bureau of Indian Standards (BIS). Specification for coarse and fine aggregates from natural sources for concrete. IS 383:1970, New Delhi, India (1970)
2. Bureau of Indian Standards (BIS). Recommended guidelines for concrete mix design. IS 10262:1982, New Delhi, India (1982a)
3. Bureau of Indian Standards (BIS). Method of load test on Soils. IS 1888:1982, New Delhi, India (1982b)
4. Bureau of Indian Standards (BIS). Specification for 33 grade ordinary portland cement. IS 269:1989, New Delhi, India (1989)
5. A.J. Clark, Block paving-research and development. Cem. Concr. Assoc. 12(7), 24–25 (1978)