Author
A. McCarthy
Bio: A. McCarthy is an academic researcher. The author has contributed to research in topics: Structural material & Foam concrete. The author has an hindex of 1, co-authored 1 publications receiving 307 citations.
Papers
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TL;DR: In this paper, a laboratory study of the development of foamed concrete, utilising two types of fly ash, with the potential for use in structural applications, was described, where fine fly ash (i.e. to BS EN 450) was used to partially replace Portland cement and coarse fly ash to replace sand fine aggregate.
Abstract: Low self-weight (800 to 1600 kg/m3), high workability (flowing and self-compacting) and excellent thermal insulating properties ( 25 N/mm2). This paper describes a laboratory study of the development of foamed concrete, utilising two types of fly ash, with the potential for use in structural applications. ‘Fine’ fly ash (i.e. to BS EN 450) was used to partially replace Portland cement and a ‘coarse’ fly ash (i.e. to BS 3892-2) to replace sand fine aggregate. In addition, the potential of polypropylene fibres in foamed concrete to enhance plasticity and tensile strength was examined. The key early age, engineering and durability properties were meas...
375 citations
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TL;DR: In this article, the authors classify literature on foam concrete in terms of constituent materials (foaming agent, cement and other fillers used), mix proportioning, production methods, fresh and hardened properties of foam concrete.
Abstract: Though foam concrete was initially envisaged as a void filling and insulation material, there have been renewed interest in its structural characteristics in view of its lighter weight, savings in material and potential for large scale utilization of wastes like fly ash. The focus of this paper is to classify literature on foam concrete in terms of constituent materials (foaming agent, cement and other fillers used), mix proportioning, production methods, fresh and hardened properties of foam concrete. Based on the review, the following research needs have been identified: (i) developing affordable foaming agent and foam generator, (ii) investigation on compatibility between foaming agent and chemical admixtures, use of lightweight coarse aggregate and reinforcement including fibers, (iii) durability studies, and (iv) factors influencing foam concrete production viz., mixing, transporting and pumping.
753 citations
TL;DR: In this article, the authors address some of the sustainability questions currently facing the cement and concrete industry, in the context of the utilisation of foam concretes based either on ordinary Portland cement (OPC) or on geopolymer binders.
567 citations
TL;DR: Foamed concrete possesses characteristics such as high strength-to-weight ratio and low density as discussed by the authors, which reduces dead loads on the structure and foundation, contributes to energy conservation, and lowers the labor cost during construction.
562 citations
TL;DR: In this paper, the thermal conductivity of oil palm shell foamed geopolymer concrete (OPSFGC) was investigated and compared with conventional wall materials, such as block and brick.
295 citations
TL;DR: In this paper, the contribution of expanded polystyrene (EPS) particles on fire resistance, thermal conductivity and compressive strength of foamed concrete has been investigated for densities ranging from 1200 to 150 kg/m3 with an EPS volume range of 0 −82.22% and water-cement ratio of 0.33.
267 citations