Advances in Coal Bottom Ash Use as a New Common Portland Cement Constituent
- 136 Downloads
Cement new constituents can contribute to improve the sustainable of the construction materials and also, in many cases, enhance their durability. Coal bottom ash could be one of such new Portland cement constituents. Currently, they are dumped because are considered as wastes in some countries leading to generate an environmental problem. Therefore, in this paper, coal bottom ash used as a main constituent of Portland cements when it is mixed in an optimized proportion with fly ashes is studied. Mechanical and durable characteristics of standardized mortars made of mixes of coal combustion bottom and fly ashes are compared to mortars made of CEM I 42.5 N (EN 197-1:2011). Ash and cement mixes were designed in order to get similar compositions of CEM II/A-V, CEM II/B-V and CEM IV/A (V) cements according to the European standard EN 197-1:2011. Summing up, it can be said that bottom ash and fly ash mixes perform in the same way than common Portland cements made of fly ash.
KeywordsCommon Portland Cement Cement Constituents Reference Mortar Alkali-silica Reaction Mortar Compressive Strength
The financial support of the Instituto Español del Cemento y sus Aplicaciones (IECA), under the Research Contract ‘Durable physico-chemical characterization of cement-based materials with industrial by-products’—AU 23-10 Contract, is gratefully acknowledged.
- 2.The World Commission on Environment and Development, Our Common Future, p 8Google Scholar
- 3.Argiz C, Menéndez E, Sanjuán MA (2013) Effect of mixes made of coal bottom ash and fly ash on the mechanical strength and porosity of Portland cement. Mater Construcc 309:49–64Google Scholar
- 11.Argiz C (2014) Study on coal-fired power plants bottom ash use as a Portland cement constituent. Comparative analysis regard to fly ash. PhD. ThesisGoogle Scholar
- 12.Argiz C, Menéndez E, Moragues A, Sanjuán MA (2015) Fly ash characteristics of Spanish coal-fired power plants. Afinidad 72:572Google Scholar