Fire Resistant Testing on Gypsum Composite Mixture with Clay

Abstract

This paper presents the result for experimental analysis of fire resistant testing of Gypsum composite mixture with clay, taken in hour (H) unit when either failure criteria stated in BS 476-20: 1987 [1] occur on the samples. The analysis were done using samples of three different Gypsum and clay ratios, 900 gram of Gypsum and 100 gram of clay; 800 gram of Gypsum and 200 gram of clay and; 700 gram of Gypsum and 300 gram of clay. Each of these ratios is fabricated with 3 different thicknesses of 6.4 mm, 9.5 mm and 12.7 mm. The results showed that sample 800g Gypsum and 200g Kaolin clay of thickness 12.7 mm has the longest fire resistance rating of 120 minutes and of thickness 6.4 mm has the shortest fire resistance rating of 27 minutes.