2025-03-27https://repository.covenantuniversity.edu.ng/handle/123456789/33527The physical properties of some clay deposits from six locations ~pread over three States in Nigeria have been investigated for furnqce brick lining (refractory) production The principal jJroperfies of the clays determined were: sticking point tempera.ture, sinlering temperature, cold crushing strength, bulk density, appatent porosity, shrinkage/growth and thermal shock resistance. Shuwari clay has a refractoriness of 150rfC, apparent porosity, 14.02%, bulk density, 1.88 Mgm·3 • cold crushing strength, 7. 75 MPa. shrinkage/growth, 1.52% and thermal resistance of 6 cycles. Pulka clay has J sintering temperature of 125rfC wilh corresponding refractoriness of 140rfC, cold cntshing strength, 9. 25 lvfpa, apparent porosity, 15.87 %, bulk density, 1.61kfgm-3 and thermal shock resistance 1 cycle. Ngala clay has a low firing temperatun; of 1 OOO"C, sintering temperature, 120(/'C. Its cold crushing strength. apparent porosity and thermal shock resistance were not determined Ubulu-Uku clay sintering temperature was 1700"C, its estimated refractoriness 1900"C; apparent porosity, 17.0 %, bulk density 1. 70 Mgm-3 , and its estimated ·thermal shock resistance was 14 cycles. Ememukohwarien clay has sintering temperature of 140ffC. estimated refractoriness. 1650°C, cold cmshing strength, 7.74 1vfpii, bulk density. of 1. 78 Mgm·3 , apparent porosity, 16.77% and thermal shock resistance of 12 cycles. ljetu clay has sintering temperalure of 145rfC, estimated refractoriness, 170ifC, cold crushing strength was J 7.21 !vfpa, bulk density, 1. 7 4 Mgm·3 , apparent porosity, 15. 70% and thermal shpck resistance 12 cycles. The possible areas of application of the clays have been suggested in this paper.application/pdfTA Engineering (General). Civil engineering (General), TJ Mechanical engineering and machineryArticle