Physical-mechanical behaviour and transformations at high temperature in a cement mortar with waste glass as aggregate

Alés, Vicente Flores; Alducin-Ochoa, Juan Manuel; Martín-del-Río, J. J.; Torres‐González, Marta; Jiménez-Bayarri, Víctor

doi:10.1016/j.jobe.2019.101158

Cited by 21 publications

(9 citation statements)

References 37 publications

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“…[11][12][13] However, the use of glass cullet as a partial replacement for sand showed degradation in the mechanical properties of concrete. [14][15][16][17] The use of grounded waste glass, hereafter referred to as GP, as a partial replacement of cement confirms the enhancement in compressive strength. 18,19 According to ASTM C 618, glass has the potential to acceptable function as SCM.…”

Section: Introductionmentioning

confidence: 67%

Coupled effect of waste glass powder and glass fibers on mechanical properties of concrete: A step towards the elimination of non‐biodegradable waste

Ahmed

Ali

Akmal

et al. 2023

Structural Concrete

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Silica, a principal component of waste glass powder (GP) reacts with calcium hydroxide to form the hydration products, and the process is affected by the fineness of GP and the percentage of cement replaced. This study investigates the structural behavior of concrete incorporating GP in reinforced concrete members by 0%–25% (by weight) replacement of cement with GP along with 0%–0.45% addition of glass fibers (GFs). The compressive and tensile strengths, strength activity index (SAI), and failure mode of treated concrete mixtures have revealed the optimum values as 15% replacement of cement with GP with 0.3% of GF. In the second stage of experiment, reinforced concrete beams were cast at various percentages of GP and GF to investigate the load–deflection response. It was observed that the beam specimen treated with GP exhibited considerably less mid‐span deflection (14.8 mm) at failure as compared to the control beam (with no GP and GF) which failed at 29.4 mm. The beam specimen treated with GP only showed significant degradation in stiffness after the peak load due to the fact that a part of GP remains unreacted and acts as a filler. Moreover, the beam specimen cast at optimum percentages of GP (15%) and GF (0.3%) showed large mid‐span deflection and higher failure load as compared to the control beam. These results suggest that the partial replacement of cement with GP should be accompanied by the addition of fibers to avoid unwanted brittle responses of GP concrete, with the additional advantage of reducing the non‐biodegradable waste.

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Section: Introductionmentioning

confidence: 67%

Coupled effect of waste glass powder and glass fibers on mechanical properties of concrete: A step towards the elimination of non‐biodegradable waste

Ahmed

Ali

Akmal

et al. 2023

Structural Concrete

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“…The use of recycled glass has wider implications, it is an environmentally friendly material, an affordable constructive solution and is technically feasible, even in countries where manpower has limited technical skills [25]. Previous research by the authors has focused on clarifying the feasibility of such materials on the basis of its chemical, mineralogical, physical, thermal and mechanical properties, and former studies claim that a percentage of recycled glass between 25% and 50% results in mortars with a lower thermal conductivity and higher density that, at the same time, have mechanical capacities comparable to mortars with natural aggregates [26,27].…”

Section: Low-cost Materials and Its Application To Energy-efficient Dwellingsmentioning

confidence: 99%

“…In previous works, the potential viability of the materials being studied has been clarified [26,27,45], starting from the evaluation of the chemical, mineralogical, physical, thermal and mechanical characteristics, as well as the correlation with thermal conductivity coefficients [46]. The thermal conductivity results have confirmed that the doses with 25% and 50% of glass aggregate have thermal conductivity coefficients that are noticeably lower than those of the reference material, and also higher densities, maintaining a sufficient mechanical capacity compared with natural aggregate mortars (Table 1).…”

Section: Thermopyshical Properties Of the Materialsmentioning

confidence: 99%

Effect on the Thermal Properties of Mortar Blocks by Using Recycled Glass and Its Application for Social Dwellings

et al. 2020

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Including recycled waste material in cement mixes, as substitutes for natural aggregates, has resulted in diverse research projects, normally focused on mechanical capacities. In the case of recycled glass as an aggregate, this provides a noticeable improvement in thermal properties, depending on its dosage. This idea raises possible construction solutions that reduce the environmental impact and improves thermal behavior. For this research, an extended building typology that is susceptible to experiencing the risk of energy poverty has been chosen. The typology is typical for social housing, built using mortar blocks with crushed glass. First, the basic thermophysical properties of the mortars were determined by laboratory tests; after that, the dynamic thermal properties of representative constructive solutions using these mortars were simulated in seven representative climate zones in Chile. An analysis methodology based on periodic thermal transmittance, adaptive comfort levels and energy demand was run for the 21 proposed models. In addition, the results show that thermal comfort hours increases significantly in thermal zones 1, 2, 3 and 6; from 23 h up to 199 h during a year. It is in these zones where the distance with respect to the neutral temperature of the m50 solution reduces that of the m25 solution by half; i.e., in zone 1, from −429 °C with the m25 solution to −864 °C with the m50. This research intends to be a starting point to generate an analysis methodology for construction solutions in the built environment, from the point of view of thermal comfort.

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“…The incorporation of construction and demolition waste in concrete and cement mortars is already a common practice, and the aim is to ensure the construction industry assumes part of the waste it produces [11,12]. The goal of this stream is to promote the use of conglomerates by incorporating waste to produce so-called "green concrete".…”

Section: Introductionmentioning

confidence: 99%

Environmental Impact of Phosphogypsum-Derived Building Materials

Romero-Hermida

Alés

Hurtado

et al. 2020

IJERPH

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The aim of the present work was to characterize the products obtained from the treatment of phosphogypsum residue by means of two recovery routes, and also to evaluate the concentrations of heavy metals and radionuclides in the materials obtained and their leachates. In this way, it is possible to determine how the most hazardous components of phosphogypsum behave during procedures until their stabilization through CO2 fixation. This study provides an initial estimate of the possibilities of reusing the resulting products from a health and safety risk standpoint and their potential polluting capacity. The phases resulting from the transformations were controlled, and the behaviour of standard mortars manufactured from the resulting paste lime was studied. In all cases, an additional control of the leachate products was performed.

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Physical-mechanical behaviour and transformations at high temperature in a cement mortar with waste glass as aggregate

Cited by 21 publications

References 37 publications

Coupled effect of waste glass powder and glass fibers on mechanical properties of concrete: A step towards the elimination of non‐biodegradable waste

Coupled effect of waste glass powder and glass fibers on mechanical properties of concrete: A step towards the elimination of non‐biodegradable waste

Effect on the Thermal Properties of Mortar Blocks by Using Recycled Glass and Its Application for Social Dwellings

Environmental Impact of Phosphogypsum-Derived Building Materials

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