Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Recycling of modified MSWI ash-mix slag and CMP sludge as a cement substitute and its optimal composition
Modified municipal solid waste incinerator (MSWI) ash-mix slag and chemical mechanical polishing (CMP) sludge are recycled together to partly replace cement in cement mortars. The main objective of this study is to fully reuse scrubber ash and fly ash from an MSWI, improve their compressive strengths, and then acquire their optimal composition through the design of experiments (DOE) and analysis of variance (ANOVA). Four control factors, including (i) cementitious usage, (ii) modified ash-mix slag substitute, (iii) water-to-cementitious ratio and (iv) CMP sludge, each of which are substituted with three levels, are considered to investigate the optimal parameter settings. The ANOVA analysis indicates that the first three factors are significant and strongly affect the compressive strength of the mortar samples. The reliability of the experiments and the rationality of the variances fall within a confidence level of 95%, indicating that the design for the composite cement mortars is robust. The reconfirmation test demonstrates that the compressive strength of the mortar can reach 52.85 MPa (152% of that of plain cement mortar) under the optimal composition (34 wt-% of cement replacement). This study reveals that we can fully utilize the fly and scrubber ashes, and the test results confirm the feasibility of substantial cement replacement with modified MSWI ash-mix slag and CMP sludge.
Recycling of modified MSWI ash-mix slag and CMP sludge as a cement substitute and its optimal composition
Modified municipal solid waste incinerator (MSWI) ash-mix slag and chemical mechanical polishing (CMP) sludge are recycled together to partly replace cement in cement mortars. The main objective of this study is to fully reuse scrubber ash and fly ash from an MSWI, improve their compressive strengths, and then acquire their optimal composition through the design of experiments (DOE) and analysis of variance (ANOVA). Four control factors, including (i) cementitious usage, (ii) modified ash-mix slag substitute, (iii) water-to-cementitious ratio and (iv) CMP sludge, each of which are substituted with three levels, are considered to investigate the optimal parameter settings. The ANOVA analysis indicates that the first three factors are significant and strongly affect the compressive strength of the mortar samples. The reliability of the experiments and the rationality of the variances fall within a confidence level of 95%, indicating that the design for the composite cement mortars is robust. The reconfirmation test demonstrates that the compressive strength of the mortar can reach 52.85 MPa (152% of that of plain cement mortar) under the optimal composition (34 wt-% of cement replacement). This study reveals that we can fully utilize the fly and scrubber ashes, and the test results confirm the feasibility of substantial cement replacement with modified MSWI ash-mix slag and CMP sludge.
Recycling of modified MSWI ash-mix slag and CMP sludge as a cement substitute and its optimal composition
Chang, Chieh-Jen (Autor:in) / Tseng, Liang (Autor:in) / Lin, Ta-Sen (Autor:in) / Wang, Wei-Jer (Autor:in) / Lee, Tzen-Chin (Autor:in)
2012
10 Seiten, 8 Bilder, 6 Tabellen, 41 Quellen
Aufsatz (Zeitschrift)
Englisch
Modified MSWI ash-mix slag for use in cement concrete
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Modified MSWI ash-mix slag for use in cement concrete
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Conditioned MSWI ash-slag-mix as a replacement for cement in cement mortar
| Online Contents | 2010
Conditioned MSWI ash-slag-mix as a replacement for cement in cement mortar
| British Library Online Contents | 2010
Characterization of a mortar made with cement and slag vitrified from a MSWI ash-mix and CMP sludge
| Online Contents | 2013