Long-term mechanical stability of cemented incineration bottom ash

Meng-Chia Weng, Min Hao Wu, Chiou Liang Lin*, Da Ken Syue, Ching Hung

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Al2O3 is a major constituent of municipal solid waste (MSW) bottom ash that may cause swelling and weakening failure. This paper explores the influence of Al2O3 on the long-term mechanical properties of bottom ash. Experimental results indicate that increased Al2O3 corresponds to decreases in both the uniaxial compressive and tensile strengths of cemented bottom ash. More specifically, the strength and Young's modulus of cemented bottom ash with high Al2O3 content (9.2%) decreased by 22.1% and 40.1%, respectively, after 365 days. Therefore, the long-term mechanical stability of bottom ash with a high Al2O3 content is unsuitable for engineering applications.

Original languageEnglish
Pages (from-to)551-557
Number of pages7
JournalConstruction and Building Materials
Volume93
DOIs
StatePublished - 26 Jun 2015

Keywords

  • Bottom ash
  • Chemical composition
  • Long-term stability

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