Fresh and Hardened Properties of Concrete Incorporating Recycled Glass as 100% Sand Replacement

Wright, Jared R.; Cartwright, Christopher; Fura, Dan; Rajabipour, Farshad

doi:10.1061/(asce)mt.1943-5533.0000979

Cited by 54 publications

(22 citation statements)

References 33 publications

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“…It is evident from the experimental results that incorporation of RGA as replacement of fine aggregate in SCM remarkably decreased compressive strength relative to control mix regardless of the percentage of replacement and age. This reduction could be attributed to lower toughness strength against fracture, smooth grain surface and weak interfacial adhesion between the cement paste matrix and glass particle [19,22,24,47]. This finding is in concurrence with those of previous studies [16,18,20,23,25].…”

Section: Compressive Strengthsupporting

confidence: 83%

“…The results showed that sorptivity values significantly decreased as the content of RGA increased due lower moisture intake nature of glass particles compared to natural fine aggregates. Similar findings were reported by some other authors [20,22,26,27]. The sorptivity value of the reference and 50% RGA specimens was 2.83 mm/h 1/2 and 1.35 mm/h 1/2 respectively.…”

Section: Sorptivitysupporting

confidence: 79%

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Experimental Study of Self-Compacting Mortar Incorporating Recycled Glass Aggregate

Tuaum

Shitote

Oyawa³

2018

Buildings

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Abstract:This experimental research is focused on the development of self-compacting mortar incorporating recycled glass aggregate (SCM-RGA) as partial substitution of fine aggregate (wt 0%, 10%, 20%, 30%, 40% and 50%). The fresh and hardened mechanical properties as well as durability of SCM-RGA mixes were investigated. Limestone powder (LP) was used as filler that constitutes 20% of the powder volume to reduce the amount of cement. The SCM-RGA mixtures were designed based on Japanese mix design method. The experimental test results showed that the slump flow of SCM-RGA mixes decreased and V-funnel flow time increased when the content of recycled glass aggregate (RGA) increased. The bulk density, compressive strength, flexural strength, water absorption and sorptivity of SCM-RGA mixes were decreased as RGA content increased. Moreover, the accelerated mortar bar test results showed that the expansion due to alkali-silica reaction (ASR) of SCM-RGA mixes increased as the content of RGA increased although the expansion of all mixes were within acceptable limit and potentially innocuous. In conclusion, up to 30% of RGA can be successfully integrated in SCM mixes that offers comparable strength performance, sorptivity enhancement and without long term detrimental ASR effect, and thus, contributes towards sustainable solid waste management, conservation of natural resources and environmental protection.

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Section: Compressive Strengthsupporting

confidence: 83%

Section: Sorptivitysupporting

confidence: 79%

Experimental Study of Self-Compacting Mortar Incorporating Recycled Glass Aggregate

Tuaum

Shitote

Oyawa³

2018

Buildings

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“…The results revealed that addition of EGA increased the workability of cement mortar up to 26.6% and 41.25% for the E50 and E100 mixes respectively compared to the control mix (CS). The increment trend in workability despite the decreasing on the amount of superplasticizer in E50 and E100 mixes is contributed to the smooth surface and spherical shape of EGA [40][41][42]. Adding to this, the increase in the flow values can be due to the increase in the amount of entrapped air voids.…”

Section: Experimental Testsmentioning

confidence: 90%

Thermal and Mechanical Properties of Cement Mortar Composite Containing Recycled Expanded Glass Aggregate and Nano Titanium Dioxide

et al. 2020

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One of the growing concerns in the construction industry is energy consumption and energy efficiency in residential buildings. Moreover, management of non-degradable solid glass wastes is becoming a critical issue worldwide. Accordingly, incorporation of recycled expanded glass aggregates (EGA) as a substitution for natural fine aggregate in cement composites would be a sustainable solution in terms of energy consumption in the buildings and waste management. This experimental research aims to investigate the effects of EGA on fresh and hardened properties and thermal insulating performance of cement mortar. To enhance the mechanical properties and water resistance of the EGA-mortar, nano titanium dioxide (nTiO2) was used as nanofillers. The results showed an increase in workability and water absorption of the EGA-mortar. In addition, a significant decrease in bulk density and compressive strength observed by incorporating EGA into the cement mortar. The EGA-mortar exhibited a low heat transfer rate and excellent thermal insulation property. Furthermore, inclusion of nTiO2 increased compressive strength and water resistance of EGA-mortar, however, their heat transfer rate was increased. The results demonstrated that EGA-mortar can be integrated into the building envelop or non-load bearing elements such as wall partition as a thermal resistance to reduce the energy consumption in residential buildings.

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“…Recycled soda-lime glass (from recycling glass bottles and window plates) has been considered in past studies as a potential pozzolan [1,[41][42][43][44][45] or aggregate [46][47][48] for concrete. Rajabipour et al [49,50] showed that glass aggregates larger than approximately 0.6 mm undergo deleterious ASR, which originates through pre-existing internal microcracks of crushed glass particles (Fig.…”

Section: Use Of Soda Lime Glass In Concretementioning

confidence: 99%

Effect of calcium on dissolution and precipitation reactions of amorphous silica at high alkalinity

Maraghechi

Rajabipour

Pantano

et al. 2016

Cement and Concrete Research

Self Cite

165

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A better understanding of silica dissolution-precipitation reactions at high pH aqueous solutions allows for promotion of favorable (e.g., pozzolanic) reactions and mitigation of deleterious (e.g., alkali-silica) reactions in concrete. In this paper, the kinetics and products of silica glass dissolution are studied as a function of solution pH, temperature, and availability of calcium. It was observed that dissolution rate versus time increases linearly with pH and reaches a maximum at pH = 14, with slower dissolution at higher alkalinities. In solutions with similarly high pH, but saturated with portlandite, glass dissolution is significantly slower. This is due to formation of a dense, low porosity, and strongly bonded C-S-H layer on the surface of glass, which serves as a barrier against diffusion of OH − and alkali ions towards the substrate glass. This protective layer forms only when Ca is abundant and portlandite saturation can be maintained on a local scale.

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Fresh and Hardened Properties of Concrete Incorporating Recycled Glass as 100% Sand Replacement

Cited by 54 publications

References 33 publications

Experimental Study of Self-Compacting Mortar Incorporating Recycled Glass Aggregate

Experimental Study of Self-Compacting Mortar Incorporating Recycled Glass Aggregate

Thermal and Mechanical Properties of Cement Mortar Composite Containing Recycled Expanded Glass Aggregate and Nano Titanium Dioxide

Effect of calcium on dissolution and precipitation reactions of amorphous silica at high alkalinity

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