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Effect of quick firing on the hygro-mechanical behaviour of earth bricks

Lookup NU author(s): Dr Agostino Bruno

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This is the authors' accepted manuscript of a conference proceedings (inc. abstract) that has been published in its final definitive form by International Committee of the SCMT Conferences, 2019.

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Abstract

© 2019 International Committee of the SCMT conferences. All rights reserved.This paper presents the effect of quick firing on the compressive strength and moisture adsorption capacity of earth bricks manufactured according to three different methods, i.e. extrusion, standard Proctorcompaction and hypercompaction to 100 MPa. All bricks were fired inside an electrical furnace by rising the temperature at a quick rate of about 9 °C per minute to 280, 455, 640, 825 and 1000 °C, after which the furnace was turned off and left to cool to the atmosphere with the brick inside it. Results show that quick firing of hypercompacted bricks at moderate temperatures, between 455 and 640 °C, is enough to attain very high levels of compressive strength, between 29 and 34 MPa, and a good moisture adsorption capacity. The strength of hypercompacted bricks further increases to 53 MPa, a value similar to that of high-strength concrete, after quick firing at 825 °C. Hence, the combination of hypercompaction and quick firing improves material performance while enabling a significant reduction of firing temperatures and times compared to current bricks production methods.


Publication metadata

Author(s): Perlot C, Gallipoli D, Bruno AW

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 5th International Conference on Sustainable Construction Materials and Technologies

Year of Conference: 2019

Online publication date: 14/07/2019

Acceptance date: 02/04/2018

Date deposited: 18/09/2019

ISSN: 2515-3056

Publisher: International Committee of the SCMT Conferences

URL: http://www.claisse.info/Proceedings.htm


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