Strength development of concrete containing municipal solid waste incineration bottom ash and metakaolin

• Main Authors: Amat, Roshazita Che, Ismail, Khairul Nizar, Ibrahim, Norlia Mohamad, Rahim, Nur Liza, Loong, Wong Jin
• Format: Conference Proceeding
• Language: English
• Subjects: Bottom ash; Chemical composition; Compressive strength; Concrete properties; Curing; Hammers; Metakaolin; Municipal waste management; Solid waste management; Solid wastes; Waste disposal; Water absorption; X-ray fluorescence
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0175592

The study was related to the influence of the properties of concrete by using different percentage of metakaolin and fixed percent of bottom ash to partially replace the cement. Cement is a well-known building material and used for the construction in the world. Moreover, the used of metakaolin (MK) and bottom ash (BA) in concrete has received considerable attention in recent years. By using bottom ash, it could reduce the land filling space. X-Ray Fluorescence (XRF) test was used to determine the chemical composition of bottom ash and metakaolin. Four series of concrete have been examined, including control, bottom ash and metakaolin were used as partial replacement for cement at 10%BA+10%MK, 10%BA+15%MK and 10%BA+20%MK of concrete mixes by volume. The curing period for the samples are 7 days and 28 days. In order to determine the properties of concrete, the tests such as slump test, density test, water absorption test, pulse velocity test, rebound hammer test and compression test were performed. The results proved that the strength development of 10%BA + 10%MK concrete sample shows the highest compressive strength after 28 days curing.