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Influence of Rate of Temperature Rise during Firing process on Compressive Strength of Mukono Ntawo Ball Clay

Influence of Rate of Temperature Rise during Firing process on Compressive Strength of Mukono Ntawo Ball Clay

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dc.contributor.author Byekwaso Ronald
dc.contributor.author Enjiku Ben D. D
dc.date.accessioned 2021-01-10T11:55:58Z
dc.date.available 2021-01-10T11:55:58Z
dc.date.issued 2018
dc.identifier.uri https://combine.alvar.ug/handle/1/49326
dc.description.abstract This study was focused on the effect of varying the rate of temperature rise during firing process on the compressive strength of ball clay slab from Ntawo clay deposit from Mukono District, in central Uganda. The rectangular clay slabs of dimensions of 16cm by 4cm by 1cm were produced of clay particles of  45μm size. They were dried under open shade and fired at varied rate of temperature rise of 2 0 C min -1 ,3 0 C min -1 ,4 0 C min -1 ,5 0 C min -1 and 6 0 C min -1 to  firing temperatures of 500 0 C, 600 0 C, 700 0 C. 800 0 C, 900 0 C and 100 0 C and held at the temperatures for one hour. The fired slabs were then cooled to room temperature in the electric  furnace. The chemical composition by percentage weight of the unfired clay sample was determined by x-ray diffraction using RIX 3000 spectrometer. The compressive force of the samples were measured using 500SN-1299417 compressive machine. It was observed  that Ntawo ball clay to contained 67.20% of silica, 18.20% of alumina,2.83% of iron oxide,1.38% of titanium, 0.06% of phosphorous penta-oxide, 0.31% of calcium oxide, 0.98% of potassium oxide and 0.19% of sodium oxide. The compressive strength of the samples decreased with increase in the rate of temperature rise. The null hypothesis that the compressive strength of the fired samples did not depend on the rate of temperature rise during the firing process was rejected at α=0.05 and α=0.01 levels of significance. The decrease of compressive strength  with increase of  the rate of temperature rise between 2 0 C min -1 to 3 0 C min -1 was negligible for all the  firing temperatures. The percentage decrease f compressive strength with the rate f temperature rise was appreciable for firing temperatures 0f 500 0 C and 1000 0 C of 11%.
dc.relation.ispartof American Scientific Research Journal for Engineering, Technology, and Sciences
dc.title Influence of Rate of Temperature Rise during Firing process on Compressive Strength of Mukono Ntawo Ball Clay
dc.type journal article
dc.identifier.mag 2800644270
dc.identifier.lens 136-483-230-051-550
dc.identifier.volume 42
dc.identifier.issue 1
dc.identifier.spage 98
dc.identifier.epage 110
dc.subject.lens-fields Chemical composition
dc.subject.lens-fields Composite material
dc.subject.lens-fields Materials science
dc.subject.lens-fields Calcium oxide
dc.subject.lens-fields Iron oxide
dc.subject.lens-fields Ball clay
dc.subject.lens-fields Sodium oxide
dc.subject.lens-fields Potassium oxide
dc.subject.lens-fields Compressive strength
dc.subject.lens-fields Titanium


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