![]() ![]() Gypsum is basically the raw material require to manufacture Plaster of Paris. It possess an outstanding property of setting and subsequent hardening when mixed with water (Smith, 1896). Plaster of Paris (POP) which is calcium sulphate with half molecule of water of crystallization (CaSO4.1/2H20) and hygroscopic characteristic obtained by duly calcined the material that is Gypsum (CaSO4.2H20). This project deals with the design and production of ceiling board using POP gypsum materials. Table 4.2 Flexural Strength test Result 33 Table 4.1 Water Absorption test Result 32 Plate 4.7 waiting for the sample to set 26 To this end, it is proved that plaster of paris (POP) ceiling board posses sufficient strength and it is durable for Civil Engineering works.Ģ.5 Gypsum product and its unique properties 10Ģ.6 Manufacture of plaster from Gypsum 12 Flexural strength test was carried out and the result obtained showed that plaster of paris (POP) ceiling board has a mean flexural strength of 11.4 N/mm2 and Asbestos has an average flexural strength of about 1.00 N /mm2. Therefore plaster of paris (POP) ceiling board absorb water readily in case there is water leakage of the roof. Water absorption test was carried out on the sample and the result indicated that plaster of Paris (POP) ceiling board has an average 8.4 percent water absorptivity compare to Asbestos with 0.5 percent. ![]() Firstly, water was poured into the container (mixing bowl) and plaster of Paris sprinkled, two minutes was waited for absorption and then the mortar was mixed with hand and shaked vigorously to obtain a fully homogeneous mixture and thereafter the mortar was sprayed on the mould and fiber was added which serves as reinforcement. ![]() The equipment used for the project are scrapper, measuring tape, mixing bowl, bucket. The materials procured for the project are plaster of Paris, fiber, water and mould. Gypsum is basically the raw material required in the manufacturing Plaster of Paris (POP) which posses an outstanding property and a good material for producing ceiling board. This project, Design and production of ceiling board using Plaster of Paris (POP) Gypsum materials. DESIGN AND PRODUCTION OF CEILING BOARD USING PLASTER OF PARIS (POP) GYPSUM MATERIAL ![]()
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