Valorisation of glass wastes for the development of geopolymer composites – Durability, thermal and microstructural properties: A review

Luhar, Salmabanu; Cheng, Ta‐Wui; Nicolaides, Demetris; Luhar, Ismail; Panias, D.; Sakkas, Konstantinos

doi:10.1016/j.conbuildmat.2019.06.169

Cited by 91 publications

(46 citation statements)

References 62 publications

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“…The same results are presented in several papers [17,34,35] and it is concluded that viscosity is increased by increasing the concentration of NaOH in the activation solution. This is related to the higher OH− concentration in the AS and is confirmed by other researchers [36]. When the water/10 M NaOH ratio in the AS is higher than 1.2, the decrease in the paste's viscosity is insignificant.…”

Section: Viscosity Of Geopolymer Pastessupporting

confidence: 78%

The Impact of the Amount of Water Used in Activation Solution and the Initial Temperature of Paste on the Rheological Behaviour and Structural Evolution of Metakaolin-Based Geopolymer Pastes

et al. 2020

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This study aimed to determine the impact of the initial temperature of the paste (from 5 °C to 35 °C) and the addition of water, which reflects a decrease in the molarity of activation solutions (AS) by diluting 10 M NaOH with distillate water, on the rheological properties of geopolymer pastes. Additionally, this resulted in changes to the physical–mechanical properties of geopolymers after curing. A higher amount of water in the AS composition and higher initial paste temperature led to an increase in the spread values up to 28% and decreases viscosity. A smaller amount of water in the AS composition and a higher initial paste temperature accelerated the speed of the geopolymer structure formation up to 1.5 times during the curing period, increased compressive strength and reduced apparent porosity and pore size. X-ray diffraction confirmed the compressive strength test results and revealed that the lower amount of water in the AS and the higher initial paste temperature for the geopolymer preparation significantly affected the mineral formation and physical and mechanical properties of the samples.

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Section: Viscosity Of Geopolymer Pastessupporting

confidence: 78%

The Impact of the Amount of Water Used in Activation Solution and the Initial Temperature of Paste on the Rheological Behaviour and Structural Evolution of Metakaolin-Based Geopolymer Pastes

et al. 2020

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“…Concrete is a traditional man-made building material. Although its tensile strength or brittleness is low [1][2][3][4], it is the most used material in the construction industry owing to its wide material availability, well workability, high strength, and low cost. Currently, with the continuous development of the construction and infrastructure industries, high-rise buildings and underground structures are increasing at an alarming rate.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Explosive Spalling Behavior of Steel-Fiber-Reinforced Concrete Exposed to High Temperature—A Review

et al. 2020

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Steel-fiber-reinforced concrete (SFRC) is being increasingly applied to various buildings and civil infrastructure as an advanced cementitious composite. In recent years, the requirements for SFRC in the construction industry have increased. Additionally, the fire resistance of SFRC has attracted attention; therefore, numerous investigations regarding the residual properties of SFRC have been conducted. This paper critically reviews the mechanical properties of SFRC subjected to elevated temperatures, including its residual compressive strength, flexural strength, tensile strength, elastic properties, fracture properties, and stress–strain relationships. The residual mechanical performance of SFRC and the action mechanism of steel fibers are reviewed in detail. Moreover, factors affecting the explosive spalling of concrete at high temperatures as well as the effect of steel fibers on the microstructure of heated concrete are discussed. It is demonstrated that, in general, SFRC exhibits better residual mechanical properties when exposed to elevated temperatures than plain concrete and can prevent the risk of explosive spalling more effectively. The purpose of this literature review is to provide an exhaustive insight into the feasibility of SFRC as a refractory building material; additionally, future research needs are identified.

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“…Indian demand for OPC is expected to accelerate to 550-600 million tons per annum by 2025! [1][2][3][4]. For the most part, Indian housing sector alone accounts for about 67% of entire cement consumption!…”

Section: Introductionmentioning

confidence: 99%

Application of Seawater and Sea Sand to Develop Geopolymer Composites

Luhar¹,

Luhar²

2020

IJRTE

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Worldwide, concrete is predominantly used as a versatile building material with its highest consumption on the earth. Nevertheless, its exigency accelerates day by day exhausting restricted natural resources in its manufacturing. Consequently, in order to prevent the degradation of these natural confined aggregates resources, it’s highly essential to employ other alternative profuse materials in their place. On the one hand, the sea Sand is existing in huge quantity below seas and oceans while on the other hand, restricted river Sand resources are being quarried haphazardly and hence reaching to their end. What’s more, to flashlights on, the production of every ton of cement contributes to the emission of an almost equal quantity of CO2 with high energy consumption. Also, it is worth mentioning that freshwater resources are in the limited quantity and, therefore, mankind is not getting sufficient fresh water even to drink in some corners of the world. In present experimental investigations, all the above burning dilemmas are kept in mind and hence, the sea Sand is used as an alternative to river Sand whereas sea water is used instead of distilled water for laboratory investigations on the properties of Geopolymer concrete and mortar in the total absence of Ordinary Portland Cement. The results demonstrated that the sea sand and seawater have no doubt affected the strength of Geopolymer concrete and mortar but just insignificantly.

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Valorisation of glass wastes for the development of geopolymer composites – Durability, thermal and microstructural properties: A review

Cited by 91 publications

References 62 publications

The Impact of the Amount of Water Used in Activation Solution and the Initial Temperature of Paste on the Rheological Behaviour and Structural Evolution of Metakaolin-Based Geopolymer Pastes

The Impact of the Amount of Water Used in Activation Solution and the Initial Temperature of Paste on the Rheological Behaviour and Structural Evolution of Metakaolin-Based Geopolymer Pastes

Mechanical Properties and Explosive Spalling Behavior of Steel-Fiber-Reinforced Concrete Exposed to High Temperature—A Review

Application of Seawater and Sea Sand to Develop Geopolymer Composites

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