Effect of heating rate on gas emissions and properties of ﬁred clay bricks and ﬁred clay bricks incorporated with cigarette butts

Abdul Kadir, Aeslina and Abbas, Mohajerani (2015) Effect of heating rate on gas emissions and properties of ﬁred clay bricks and ﬁred clay bricks incorporated with cigarette butts. Applied Clay Science, 104. pp. 269-276. ISSN 1691317

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Official URL: http://dx.doi.org/10.1016/j.clay.2014.12.005

Abstract

In general, the ﬁring process of clay bricks generates a range of gas emissions into the atmosphere. At high concentrations, these volatile emissions can be a serious source of environmental pollutions. The main purpose of this study was to evaluate the effect of different heating rates on gas emissions and properties during the ﬁring of clay bricks and clay bricks incorporated with cigarette butts (CBs). In this investigation, four different heating rates were used: 0.7 °C min−1−1, 2 °C min−1, 5 °C min−1 and 10 °C min. The samples were ﬁred in solid form from room temperature to 1050 °C. During the ﬁring cycles, carbon monoxide, carbon dioxide, nitrogen oxides,hydrogen cyanide and chlorine emissions were measured at different heating rates. All bricks were also tested for their physical and mechanical properties including dry density, compressive strength, tensile strength, water absorption and initial rate of absorption. Results show that gas emissions were reduced signiﬁcantly with higher heating rates (10 °C min) followed by 5 °C min−1−1 and 2 °C min for both types of brick samples. Higher heating rates also decrease the compressive strength and tensile strength value but demonstrate an insigniﬁcant effect on the water absorption properties respectively. In conclusion, a higher heating rate is preferable in terms of decreasing gas emissions and it is also able to produce adequate physical and mechanical properties especially for the CB brick.

Item Type:	Article
Uncontrolled Keywords:	"Gas emission; Heating rate; Fired clay brick; Cigarette butt; Physical and mechanical properties
Subjects:	T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions:	Faculty of Civil Engineering and Built Environment > Department of Civil Engineering : Water and Environmental Engineering
Depositing User:	Mrs. Mashairani Ismail
Date Deposited:	07 Dec 2021 04:58
Last Modified:	07 Dec 2021 04:58
URI:	http://eprints.uthm.edu.my/id/eprint/4526

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