Author
Sergio H.P. Cavalaro
Other affiliations: Polytechnic University of Catalonia
Bio: Sergio H.P. Cavalaro is an academic researcher from Loughborough University. The author has contributed to research in topics: Flexural strength & Fiber-reinforced concrete. The author has an hindex of 28, co-authored 115 publications receiving 2013 citations. Previous affiliations of Sergio H.P. Cavalaro include Polytechnic University of Catalonia.
Papers
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TL;DR: In this article, the early age hydration mechanisms of accelerated CEM I pastes were evaluated using liquid phase analysis, conductimetry, isothermal calorimetry and in situ XRD and SEM.
148 citations
TL;DR: In this paper, a diffusion-reaction numerical model is proposed to simulate the response of concrete exposed to external sulfate attack, where diffusion properties are modified based on the strain reached and the ratio of porosity filled by ettringite.
104 citations
TL;DR: In this paper, the structural response of hyperstatic concrete flat suspended slabs reinforced only with structural plastic macro-fibres was studied. And the results showed that the slabs tested maintained a high load level after cracking showing a ductile behaviour with great stress redistribution capacity.
103 citations
TL;DR: In this article, the authors proposed a toolbox for the prediction of fiber orientation in practical applications of fiber reinforced concrete (FRC) in anisotropic conditions, and the main steps of the proposed framework are analyzed in detail and validated with experimental results.
100 citations
TL;DR: In this paper, the early age hydration behavior of accelerated cement pastes based on the chemical properties of cement and accelerators is parametrized, and a combination of compatible materials are recommended to enhance the performance of the matrix and to prevent an undesirable hydration behaviour and its consequences in mechanical strength development.
85 citations
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01 Nov 2011
TL;DR: The methodology used in EPA's Waste Reduction Model (WARM) to estimate streamlined life-cycle greenhouse gas (GHG) emission factors for concrete beginning at the point of waste generation is described in this paper.
Abstract: This chapter describes the methodology used in EPA’s Waste Reduction Model (WARM) to estimate streamlined life-cycle greenhouse gas (GHG) emission factors for concrete beginning at the point of waste generation. The WARM GHG emission factors are used to compare the net emissions associated with concrete in the following two waste management alternatives: recycling and landfilling. Exhibit 1 shows the general outline of materials management pathways for concrete in WARM. For background information on the general purpose and function of WARM emission factors, see the Introduction & Overview chapter. For more information on Recycling and Landfilling, see the chapters devoted to these processes. WARM also allows users to calculate results in terms of energy, rather than GHGs. The energy results are calculated using the same methodology described here but with slight adjustments, as explained in the Energy Impacts chapter.
364 citations
TL;DR: In this article, the authors reviewed and discussed recent research activities on the durability of concrete, including: 1) major durability problems such as alkali aggregate reaction, sulfate attack, steel corrosion and freeze-thaw; 2) concrete in marine environment; and 3) coupling effects of mechanical load and environmental factors on durability.
352 citations
TL;DR: In this paper, a review of different types of natural fibers, their characteristics and properties enabling them to be used as reinforcing agents in different polymers is presented. And the use of different additive manufacturing technologies in processing polymer composites is also discussed.
Abstract: Throughout the world there have been alarming concerns over the use of nonrenewable resources during manufacturing of goods and associated environmental legislations. Therefore, the use of natural materials and fabrication of composites therefrom, particularly, development of natural fiber reinforced polymer composites is gaining significant attention. Although natural fiber reinforced composites (NFRCs) show strong application prospects, various materials and processing related challenges needs to be addressed to achieve long-term stability and performance. In this review, we attempted to provide an overview of different types of natural fibers, their characteristics and properties enabling them to be used as reinforcing agents in different polymers. Then the unique requirement of fiber surface modification to achieve enhanced fiber-matrix bonding is discussed. The article also discusses conventional processing routes and critical issues associated with NFRCs processing. The use of different additive manufacturing (AM) technologies in processing polymer composites is also discussed. At the end, we have critically analyzed the challenges and opportunities associated with AM of NFRCs.
285 citations
TL;DR: The use of macro plastic fibres to reinforce concrete has attracted widespread attention from both scientists and construction industry due to the multiple sustainability benefits they offer, compared to steel fibres and steel reinforcing mesh as mentioned in this paper.
272 citations
TL;DR: In this paper, a novel 3D printing concrete ink that has good fluidity during movement and satisfying standing behavior at static state due to the structural rebuilding of cement paste advanced by the addition of nano clay (NC) and silica fume (SF) was specially designed to be extruded through a nozzle to print layer-over-layer components for an innovative additive manufacturing process.
221 citations