The effectiveness of quality control in dangote plc ibese ogun state Ngeria

The project evaluates the effectiveness of quality control in Dangote Cement PLC, Ibese Ogun State, Nigeria. Limestone, shale and laterite samples were from the mines to determine their right grade as well as their mixing proportion. Also samples were taken from kiln feed and the final stage of cement production. The compressive strength of the cubes is determined according to the ages of the cubes which is 2 days, 7 days and 28 days while the degree of lime content in raw materials, clinker, cement, limestone in relation to other oxides were determined using XRF and setting time and residue determination values were also estimated. The results show that the compressive strength for 2 days is between 16 – 33, for 7 days is between 28 – 47 and for 28 days is between 33 – 53. Meanwhile, percentages of CaO, C3 S, C2S and MgO in clinker are 53.57 %, 56 %, 16.47 %, 2.14 % and 62 %, 58 %, 19 %, 0 % in cement. The amounts of residue retained by different sieves were within the standard specification of 10 – 22gm. The study therefore concluded that the quality control in Dangote Cement Company is effective and cement produce meets international standard requirements and characteristics which dependable and satisfacto.