Mechanical and durability performance of concrete incorporating fine recycled concrete and glass aggregates

Mardani‐Aghabaglou, Ali; Tuyan, Murat; Ramyar, Kambiz

doi:10.1617/s11527-014-0342-3

Cited by 121 publications

(46 citation statements)

References 34 publications

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“…The specific surface areas of the reference cement and the three mineral admixtures (lithium slag, fly ash, and steel slag) were 380, 400, 430, and 453 m 2 /kg, respectively. The densities were 3.10, 2.48, 2.68, and 3.53 g/cm 3 , respectively, and the chemical compositions are shown in Table 1.…”

Section: Experimental Data Collectionmentioning

confidence: 99%

“…Large-scale projects in special environments, such as undersea tunnels, dams, and nuclear power plants, need to withstand high internal and external pressures, must have strong anti-seepage and leakage prevention functions, avoid cracking or microcracks in early age. [3][4][5] After the recycled concrete is crushed, cleaned, and classified, it is graded according to a certain proportion, partially or completely replacing natural aggregates such as sand and gravel (mainly coarse aggregate), and then added cement, water, and the like new concrete. 6 However, when the concrete initially solidifies and hardens, the volume deformation caused by the constraint generates stress inside the recycled concrete.…”

Section: Introductionmentioning

confidence: 99%

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Effect of chemical shrinkage and temperature shrinkage on early cracking of recycled concrete

Sun

Zhou

et al. 2020

Asia-Pacific J Chem Eng

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Since the existence of cement concrete, the early cracking problem of recycled concrete directly affects the application of concrete in engineering. Cracks can increase the permeability of concrete and lead to the decrease of structural durability of concrete in the corrosive environment. The reason causing this fatal problem is the shrinkage of concrete. The purpose of this paper is to improve the durability and integrity of concrete structure and understand its shrinkage. After the initial solidification and hardening of concrete, the volume deformation will cause the internal stress of the recycled concrete due to constraints. When the internal stress is greater than the tensile strength of recycled concrete, the recycled concrete will crack in the early stage. The study of early crack has always been the focus of scholars. Through the efforts of many scholars, factors leading to early cracking have been gradually discovered, such as hydration reaction of cement components in concrete, microstructure change, and external environment. In this paper, the influence of chemical shrinkage and temperature shrinkage on the early cracking of recycled concrete is analyzed by studying the chemical composition of the raw material of recycled concrete for chemical experiments and comparing the recycled concrete in a constant temperature studio with different temperatures. It is concluded that the composition of concrete and the content of each component have direct influence on the chemistry. Concrete containing more C3A has greater chemical reduction. Temperature difference is the main factor causing temperature shrinkage, including the heat released by component hydration. In addition to the change in the external temperature, the temperature of the concrete will also decrease, leading to early cracking.

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Section: Experimental Data Collectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of chemical shrinkage and temperature shrinkage on early cracking of recycled concrete

Sun

Zhou

et al. 2020

Asia-Pacific J Chem Eng

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“…The influence of curing conditions on the high temperature performance of SCC were studied (Patel et al, 2012). Ling et al conclude that when concrete is exposed to temperature, all the water cured specimens had higher residual strengths and mass losses, while the water porosity and absorption values were lower as compared to the corresponding air cured specimens (Mardani-Aghabaglou et al, 2015). Thereafter, Ling et al (2013) studied the management and recycling of waste glass in concrete products.…”

Section: Addition Of Waste Glass As Aggregatementioning

confidence: 99%

Addition of Waste Glass to Self-Compacted Concrete: Critical Review

Alhasanat¹,

Qadi²,

Al-Thyabat³

et al. 2016

MAS

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Utilization of waste glass at optimum amounts in concrete production not only provides significant environmental benefits such as reducing carbon dioxide emissions generated during the production process of cement but also enhances performance of the concrete and cement. The aim of this work was to review the effect of addition of waste glass on cement and concrete. The review showed that addition of glass powder enhances the compressive strength properties of the concrete product while using waste glass as aggregate showed that the slump flow increased with the increase of recycled glass content. On the other hand, the compressive strength, splitting tensile strength and flexural strength of the concrete were decreased with the increase in the recycled glass content.

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“…Los cuales muestran que la incorporación de agregados gruesos reciclados en la matriz de referencia (M-30) causa una disminución de la resistencia a la compresión que varía entre el 15% y el 29 %, dependiendo del porcentaje de agregado natural que fue sustituido por reciclado. El mortero adherido a los agregados obtenidos a partir de la trituración de RCDs es quizás la zona más débil de los mismos; su estructura porosa y el agrietamiento causado por los procesos de molturación durante su reciclaje debilitan la capacidad de soportar grandes esfuerzos de compresión y por tal razón afectan el desempeño mecánico del compuesto (Mardani et al, 2014;McNail y Kang, 2013;Behera et al, 2014). Además, las características de la interfase antigua influyen directamente sobre el comportamiento mecánico del nuevo concreto, ya que de no poseer las propiedades adecuadas podría generar la concentración de grandes esfuerzos cuando este es sometido a una carga y provocar la falla del material (Xiao et al, 2012).…”

Section: Ensayos En Estado Endurecido Resistencia a La Compresiónunclassified

Comportamiento en estados fresco y endurecido de un concreto autocompactante, adicionado con escoria de carbón, y elaborado con agregado grueso de concreto reciclado

et al. 2014

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ResumenEl crecimiento constante de las actividades de construcción, remodelación y demolición en las ciudades genera grandes volúmenes de residuos de concreto demolido, que en la actualidad se han convertido en un problema grave de contaminación ambiental. Por otro lado, dada la necesidad global de incrementar la eficiencia en el consumo de materiales y de energía resulta oportuno estudiar materiales para su reciclaje, sobre todo como en el caso del concreto, que hoy por hoy, es el más producido por año en el mundo y uno de los que causa mayor impacto ambiental. En este sentido, este trabajo de investigación evalúa el efecto de la sustitución parcial y total de los agregados naturales por agregados reciclados, obtenidos a partir de la trituración de residuos de la construcción y demolición sobre el comportamiento en estado fresco y endurecido de un concreto autocompactante. Los resultados mostraron que la incorporación de estos agregados reciclados no afecta significativamente el comportamiento en estado fresco de las mezclas, pero en cambio sí tiene influencia sobre el comportamiento en estado endurecido de los concretos, pues causa una disminución de la resistencia a la compresión de entre el 15% y el 29 %, además de un leve aumento de la cantidad de poros permeables en función de la cantidad de agregado natural que fue sustituido por reciclado (25, 50, 75 y 100 %).Palabras clave: Residuos de la construcción y demolición; agregados reciclados, agregados naturales; concreto de cemento portland; concreto autocompactante. AbstractThe steady growth of remodeling, demolition, and in general the construction activity in the populous cities generate large volumes of waste from demolished concrete, which now have become a serious problem of environmental pollution. Furthermore, given the global need to increase efficiency in the consumption of materials and energy, it is imperative to study the recycling of the materials, especially as in the case of concrete, which today, is the material most produced per year in the world, and one of the greatest contributors to a negative impact on the environment. In this sense, this research evaluates the effect of partial and total replacement of natural aggregates by recycled aggregates obtained from the crushing of construction waste and demolition on the behavior in fresh and hardened state of a self-compacting concrete. The results showed that the incorporation of these recycled aggregates did not significantly affect Fresh and hardened behavior of a self compacting concrete added with coal slag and made with coarse aggregate from recycled concrete.

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Mechanical and durability performance of concrete incorporating fine recycled concrete and glass aggregates

Cited by 121 publications

References 34 publications

Effect of chemical shrinkage and temperature shrinkage on early cracking of recycled concrete

Effect of chemical shrinkage and temperature shrinkage on early cracking of recycled concrete

Addition of Waste Glass to Self-Compacted Concrete: Critical Review

Comportamiento en estados fresco y endurecido de un concreto autocompactante, adicionado con escoria de carbón, y elaborado con agregado grueso de concreto reciclado

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