The effect of high temperature on the residual mechanical performance of concrete made with recycled ceramic coarse aggregates

Martins, David; Correia, João R.; Brito, Jorge de

doi:10.1002/fam.2287

Cited by 36 publications

(25 citation statements)

References 22 publications

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“…The reasons for better performance of ceramic sand concrete can be (1) ceramic sand has lower mass loss at elevated temperature than natural sand as observed in TGA (Figure ), (2) ceramic concrete has better mechanical properties at laboratory temperature, and (3) less volume changes in ceramic sand concrete results in lower stresses and hence no cracks appear on surface. Similar observations were made by Halicka et al and Martins et al in their studies.…”

Section: Resultssupporting

confidence: 92%

“…Overall, they observed that water cooling caused higher loss in compressive strength due to thermal shock. Matrins et al investigated the residual mechanical properties of recycled ceramic aggregate (construction and demolition waste) concrete subjected to elevated temperature. They reported that concrete samples with brick aggregate resulted in explosive spalling whereas concrete samples with recycled concrete aggregate displayed improved residual mechanical performance.…”

Section: Introductionmentioning

confidence: 99%

“…The elevated temperatures selected are commonly considered in various studies. [11][12][13][14][15][16][17][18] Two different cooling regimes namely air cooling and water cooling were selected. The water cooling regime simulated the water-based fire fighting system commonly used in many countries.…”

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confidence: 99%

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Influence of fine ceramic aggregates on the residual properties of concrete subjected to elevated temperature

et al. 2018

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Summary The residual properties of concrete subjected to elevated temperature are of importance to assess the stability of the structure. This paper investigates the performance of concrete containing white ware ceramic sand exposed to elevated temperature. Concrete mixes containing 0%, 50%, and 100% ceramic sand were prepared. The specimen were exposed to elevated temperatures of 200°C, 500°C, and 800°C for a duration of 60 minutes. Their residual mechanical properties (compressive strength, split tensile strength), ultra sonic pulse velocity, and mass change for different cooling regimes were investigated and compared among specimen. The results showed that incorporation of ceramic sand in concrete mixes improved the resistance against elevated temperature of hardened concrete.

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Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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Influence of fine ceramic aggregates on the residual properties of concrete subjected to elevated temperature

et al. 2018

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“…However, the behavior of recycled aggregate concrete at elevated temperatures is researched in limited number of studies. And most of them evaluated the residual mechanical properties of recycled aggregate concretes after exposure to elevated temperatures . Sarhat and Sherwood studied the residual compressive strength, split tensile strength, and modulus of elasticity of concrete containing various amounts of recycled coarse aggregate (RCA) after exposure to elevated temperatures up to 750 °C.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of concrete containing recycled coarse aggregate at and after exposure to elevated temperatures

Shaikh

2017

Structural Concrete

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This paper presents the effect of recycled coarse aggregate (RCA) of 50% and 100% by wt. on compressive strength and elastic modulus of concrete at elevated temperatures of 600 and 800 °C. The residual compressive strengths of above recycled aggregate concretes after exposure to elevated temperatures are also evaluated and compared to those measured during heating. The effect of polypropylene (PP) fibers on residual compressive strength and cracking behavior of above recycled aggregate concretes after exposure to elevated temperatures is also evaluated in this study. Results show that the loss of compressive strength of recycled aggregate concretes at 600 and 800 °C is slightly higher (about 10%) than its counterpart control concrete containing natural coarse aggregates. Concrete containing 100% RCA exhibited about 50% loss of its ambient temperature compressive strength at 800 °C, which is about 25% less in concrete containing 50% RCA. The residual compressive strength, which is measured after cooling of heated specimens, of both recycled aggregate concretes and control concrete is higher at both elevated temperatures. The measured elastic modulus of both recycled aggregate concretes show no significant reduction compared to their counterpart control concrete at both elevated temperatures. A strong correlation between elastic modulus and square root of compressive strength of recycled aggregate concretes is observed at elevated temperatures. The model proposed in Eurocode to predict the elevated temperature compressive strength and elastic modulus agrees well with the measured values for recycled aggregate concretes. The addition of PP fibers reduced the residual compressive strength of concrete containing 100% RCA at both temperatures with significant reduction at 800 °C. However, mixed results are obtained in the case of concrete containing 50% RCA. The cracking patterns of concrete containing RCA and those containing PP fibers also correlated well with the observed residual compressive strength results.

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“…For this reason, the need for seeking new applications in other industries where the ceramic waste can be recycled is becoming absolutely vital (3). Although the reutilization of ceramic waste as fine and coarse aggregates in the concrete production has been previously studied (4)(5)(6)(7), its use in structural concrete is not a common practice, particularly as fine aggregates (8). Thus, it seems that the best engineering applications found for recycling ceramic waste is as in non-structural concretes as recycled aggregates.…”

Section: Introductionmentioning

confidence: 99%

Recycling ceramic industry wastes in sound absorbing materials

et al. 2016

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ABSTRACT:The scope of this investigation is to develop a material mainly composed (80% w/w) of ceramic wastes that can be applied in the manufacture of road traffic noise reducing devices. The characterization of the product has been carried out attending to its acoustic, physical and mechanical properties, by measuring the sound absorption coefficient at normal incidence, the open void ratio, density and compressive strength. Since the sound absorbing behavior of a porous material is related to the size of the pores and the thickness of the specimen tested, the influence of the particle grain size of the ceramic waste and the thickness of the samples tested on the properties of the final product has been analyzed. The results obtained have been compared to a porous concrete made of crushed granite aggregate as a reference commercial material traditionally used in similar applications. Compositions with coarse particles showed greater sound absorption properties than compositions made with finer particles, besides presenting better sound absorption behavior than the reference porous concrete. Therefore, a ceramic waste-based porous concrete can be potentially recycled in the highway noise barriers field. RESUMEN:Reciclado de residuos cerámicos en materiales absorbentes acústicos. El objetivo de este trabajo es desarrollar un material absorbente acústico compuesto fundamentalmente por residuos cerámicos (80% p) que se pueda utilizar en la fabricación de dispositivos reductores de ruido de carretera. La caracterización del producto se ha llevado a cabo atendiendo a sus propiedades acústicas, físicas y mecánicas, determinando el coeficiente de absorción acústica a incidencia normal, porosidad abierta, densidad y resistencia a compresión. La absorción acústica de un material poroso está fuertemente determinada por el tamaño de poro y por la longitud dela probeta sometida a ensayo. De este modo, se ha analizado la influencia del tamaño de partícula del residuo cerámico y del espesor de las muestras estudiadas en las propiedades del producto final. Los resultados obtenidos se han comparado con los obtenidos para un hormigón poroso elaborado con árido grueso, que se ha tomado como producto de referencia tradicionalmente empleado en este tipo de aplicaciones. Las composiciones elaboradas con el residuo de mayor tamaño de partícula han mostrado mayor absorción acústica, incluso mayor que las del hormigón poroso comercial. Por tanto, un hormigón poroso elaborado con residuos cerámicos puede ser potencialmente empleado como material en la fabricación de barreras acústicas de carretera.PALABRAS CLAVE: Hormigón; Ladrillos; Tratamiento de residuos; Árido; Distribución de tamaño de partículas 2 • C. Arenas et al.

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The effect of high temperature on the residual mechanical performance of concrete made with recycled ceramic coarse aggregates

Cited by 36 publications

References 22 publications

Influence of fine ceramic aggregates on the residual properties of concrete subjected to elevated temperature

Influence of fine ceramic aggregates on the residual properties of concrete subjected to elevated temperature

Mechanical properties of concrete containing recycled coarse aggregate at and after exposure to elevated temperatures

Recycling ceramic industry wastes in sound absorbing materials

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