A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Optimal Use of MSWI Bottom Ash in Concrete
Abstract An experimental investigation was carried out to evaluate the mechanical properties of concrete mixtures in which coarse aggregate was partially (30, 50 or 70 %) replaced with pre-washed municipal solid waste incineration (MSWI) bottom ash. Results indicated that bottom ash reduced the compressive strength, elastic modulus, and levels of heavy metals in leachate when used as a replacement for gravel, and that the maximum amount of MSWI bottom ash in concrete should not exceed 50 %. To analyze the effect mechanism of bottom ash in concrete, the degree of hydration and the following pozzolanic reaction characterized by the pozzolanic activity index, and the porosity distribution in cement mortar. The study indicates that improved properties of concrete are not solely later strength gain and reduced levels of heavy metals in leachate but also the progression of pozzolanic reactions, where a dense structure contains a higher proportion of fine pores that are related to durability.
Optimal Use of MSWI Bottom Ash in Concrete
Abstract An experimental investigation was carried out to evaluate the mechanical properties of concrete mixtures in which coarse aggregate was partially (30, 50 or 70 %) replaced with pre-washed municipal solid waste incineration (MSWI) bottom ash. Results indicated that bottom ash reduced the compressive strength, elastic modulus, and levels of heavy metals in leachate when used as a replacement for gravel, and that the maximum amount of MSWI bottom ash in concrete should not exceed 50 %. To analyze the effect mechanism of bottom ash in concrete, the degree of hydration and the following pozzolanic reaction characterized by the pozzolanic activity index, and the porosity distribution in cement mortar. The study indicates that improved properties of concrete are not solely later strength gain and reduced levels of heavy metals in leachate but also the progression of pozzolanic reactions, where a dense structure contains a higher proportion of fine pores that are related to durability.
Optimal Use of MSWI Bottom Ash in Concrete
Zhang, Tao (author) / Zhao, Zengzeng (author)
2014-05-20
10 pages
Article (Journal)
Electronic Resource
English
concrete , municipal solid waste incineration bottom ash , compressive strength , elastic moduli , toxicity characteristic leaching procedure , pozzolanic activity index , mercury intrusion porosimetry , optimum use Engineering , Building Materials , Structural Materials , Structural Mechanics , Continuum Mechanics and Mechanics of Materials
MSWI Bottom Ash as an Aggregate for a Lightweight Concrete
| British Library Conference Proceedings | 2014
Behaviour of cement-treated MSWI bottom ash
| British Library Conference Proceedings | 2000
The impact of MSWI bottom ash as aggregate on concrete mechanical performance
| Taylor & Francis Verlag | 2022