1. Adeyemi GO (1996) Clay mineralogy, major elements geochemistry and strength characteristics of three highway subgrade soils in southwestern Nigeria. Bull Int Assoc Eng Geol 54:365–385
2. ASTM C 326/82 (1982) Standard test method for drying and firing shrinkages of ceramic white ware clays (Reapproved 1992)
3. ASTM C 689/93 (1993) Standard test method for modulus of rupture of unfired clays
4. ASTM C674/88 (1988) Standard test methods for flexural properties of ceramic white ware material reapproved 1994)
5. Augustinik AI (1957) Ceramic, Leningrad