A type of ecocement prepared from municipal solid waste incineration fly ash

Title: A type of ecocement prepared from municipal solid waste incineration fly ash
Author(s): K. Wu, H.S. Shi
Paper category : conference
Book title: International RILEM Conference on Advances in Construction Materials Through Science and Engineering
Editor(s): Christopher Leung and K.T. WAN
ISBN: 978-2-35158-116-2
e-ISBN: 978-2-35158-117-9
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 673 - 683
Total Pages: 11
Nb references: 21
Language: English

Abstract: This paper presents the laboratory scale study on the preparation of alintie ecocement clinkers from municipal solid waste incineration (MSWI) fly ash. Firing schedule, microscopy, compressive strength of the clinker was investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM), etc. The ratio of some heavy metals volatilized during clinkerization, as well as leaching concentration of free Cl－ in the ecocement were also investigated. From the results it is observed that alinite ecocement can be prepared from MSWI fly ash under the temperature of 1200℃ and duration time of 1h. The addition of 20% MSWI fly ash as admixture in alinite ecocement reduces the early day strength significantly, but exerts little influence on compressive strength at later ages. Results also show that most of Cl－ in the ecocement pastes existing in condition of bounded with clinker mineral or hydration products, but the amount of leaching free Cl－ was significant, and the steel bar exposed to the alinite ecocement is likely to be corroded.

Online publication: 2011-10-31
Publication type : full_text
Public price (Euros): 0.00