Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Use of Marble Sludge Waste and Polypropylene Fibers in Developing Eco-friendly Strain Resilient Cementitious Composites
The reduction of fly ash deposits due to the near-future shut down of lignite consumption power plants orients the Engineered Cementitious Composites (ECCs) research to partially replace this by-product by other fine-grained wastes. Lime powder from marble industry has been studied in high modulus of Elasticity PVA-ECCs by acting as binder and/or sand replacement. The present research investigates the mechanical behaviour of a strain resilient CC made by low modulus of Elasticity PP micro-fibers (12mm in length) where the fly ash is replaced by the lime powder (LP), using as reference mix the C1FA2S1.1 (C denotes cement, FA fly ash, S sand and the subscripts the per weight contributions in the mix). Examining several scenarios on trials where LP totally replaced the fly ash (C1LP2S1.1) or both the fly ash and the sand (C1LP3.1) or the fly ash and the latter the cement (FA1LP2S1.1) led to the optimum mix C1LP2S1.1 in respect to adequate mechanical properties. This mix is mechanically investigated by conducting a series of simple tests (compression, bending, splitting). The difficult direct tension test is elaborated in the compression machine by interpolating a specially designed metal strut apparatus where the embodied dogbone specimen acts as the tie. The experimental results are analysed aiming to correlate the mechanical properties obtained from different test setups and discussed aiming to answer whether this novel material is appropriate for structural use.
Use of Marble Sludge Waste and Polypropylene Fibers in Developing Eco-friendly Strain Resilient Cementitious Composites
The reduction of fly ash deposits due to the near-future shut down of lignite consumption power plants orients the Engineered Cementitious Composites (ECCs) research to partially replace this by-product by other fine-grained wastes. Lime powder from marble industry has been studied in high modulus of Elasticity PVA-ECCs by acting as binder and/or sand replacement. The present research investigates the mechanical behaviour of a strain resilient CC made by low modulus of Elasticity PP micro-fibers (12mm in length) where the fly ash is replaced by the lime powder (LP), using as reference mix the C1FA2S1.1 (C denotes cement, FA fly ash, S sand and the subscripts the per weight contributions in the mix). Examining several scenarios on trials where LP totally replaced the fly ash (C1LP2S1.1) or both the fly ash and the sand (C1LP3.1) or the fly ash and the latter the cement (FA1LP2S1.1) led to the optimum mix C1LP2S1.1 in respect to adequate mechanical properties. This mix is mechanically investigated by conducting a series of simple tests (compression, bending, splitting). The difficult direct tension test is elaborated in the compression machine by interpolating a specially designed metal strut apparatus where the embodied dogbone specimen acts as the tie. The experimental results are analysed aiming to correlate the mechanical properties obtained from different test setups and discussed aiming to answer whether this novel material is appropriate for structural use.
Use of Marble Sludge Waste and Polypropylene Fibers in Developing Eco-friendly Strain Resilient Cementitious Composites
RILEM Bookseries
Jędrzejewska, Agnieszka (Herausgeber:in) / Kanavaris, Fragkoulis (Herausgeber:in) / Azenha, Miguel (Herausgeber:in) / Benboudjema, Farid (Herausgeber:in) / Schlicke, Dirk (Herausgeber:in) / Tastani, Souzana (Autor:in) / Christou, Paraskevi (Autor:in) / Kostas, Christos (Autor:in) / Ismail, Ioannis (Autor:in)
International RILEM Conference on Synergising expertise towards sustainability and robustness of CBMs and concrete structures ; 2023 ; Milos Island, Greece
11.06.2023
11 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch