Strength and durability of cement with forest waste bottom ash

• Type: Article in International Scientific Journal
• Date: 2013

Authors

Maria da Luz Garcia (Author) Other; Joana Sousa Coutinho (Author) FEUP

Journal

Title: Construction and Building Materials

Vol. 41

Pages: 897-910

ISSN: 0950-0618

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 24 Citations

Scopus - 55 Citations

Scientific classification

FOS: Engineering and technology > Civil engineering

Other information

Authenticus ID: P-005-1YB

DOI: 10.1016/j.conbuildmat.2012.11.081

Abstract (EN): Every year more than 1 m(3) of concrete is produced per person worldwide with cement accounting for 5-8% CO2 emissions and a growing use of mineral additions. Timber processing waste, a sustainable and renewable source for energy production, leads to significant amounts of wood-waste fly ash which has been used in concrete of acceptable strength and durability. Grate operated wood waste power plants produce immense volumes of bottom-ash, not studied to date. This study focused on characterising ground bottom-ash (GWA) with strength and durability assessment as cement replacement in mortar. Durability-related properties tested at 80 days generally revealed marginal loss but from around 3 months, strength surpassed control attaining 12% higher values at 1 year. Although tested nonpozzolanic due to crystallinity, GWA may be used as filler in cement-based materials further contributing to sustainable construction. (C) 2013 Published by Elsevier Ltd.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 14