recycling of geopolymer concrete sciencedirect

Lightweight Geopolymer Concrete Containing Recycled Plastic …

Abstract: Utilizing recycled plastic beads (RPB) as lightweight waste aggregates in the concrete and geopolymer application is quite attractive. This study presented the mechanical behavior, density, porosity, water absorption, abrasion resistance, thermal conductivity, and ultrasonic pulse velocity (UPV) of geopolymer lightweight concrete ...

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Performance of geopolymer concrete containing recycled …

 · The replacement of both fine and coarse aggregates by different percentages of crumb rubber for slag based geopolymer concrete has influenced the compressive strength at 28 and 60 days. The compressive strength value of control mixture at 28 and 60 days was (37.4 MPa) and (53.13 MPa) respectively.

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Reviewing the Mechanical Properties of FA and GGBS-Based Geo-polymer Concrete Containing Recycled Concrete …

 · As in today''s construction industry, concrete is the key component of construction material used worldwide. But the problem of overconsumption of natural resources, heavy emission of CO2, and high consumption of energy while manufacturing are the challenging...

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Geopolymer Concrete – the Construction Material of the …

Geopolymer Concrete – the Construction Material of the Future? by Snøhetta + Saferock Net zero concrete for the construction industry of the future. 2021-05-31 Project Specs Design: Snøhetta Type: Architecture Material Design News : : Product Design ...

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Recycling of geopolymer concrete

 · The complete replacement of coarse natural aggregates with recycled geopolymer concrete aggregates was shown to result in only 12.9%, 10.7% and 15.2% reduction in the compressive strength, modulus of elasticity and modulus of rupture of recycled aggregate geopolymer concrete, respectively.

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Performance of geopolymer concrete containing recycled rubber

 · Performance of geopolymer concrete containing recycled rubber Author links open overlay panel Aly Muhammed Aly a M.S. El-Feky b Mohamed Kohail a El …

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Geopolymer concrete with treated recycled aggregates: Macro …

 · In geopolymer concrete made with treated recycled concrete aggregates, the increase in the compressive strength values due to the curing temperature was 80% using a 6 M activator solution (series 10 vs series 9) and64% for the 10 M solution (series 3

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Geopolymer concrete incorporating recycled aggregates: A …

 · The search was again refined by using the specific keywords ''geopolymer recycled aggregate concrete'', and ''recycled geopolymer concrete aggregate'', In this stage, 1073 articles were obtained. The literature was further screened by restricting only peer-reviewed articles, technical notes, textbooks and international standards, reducing the number of articles …

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Geopolymers made of recycled brick and concrete powder – A …

 · Abstract. Geopolymers made of recycled brick powder (RBP) and recycled concrete powder (RCP) have attracted huge attention. However, their properties have not been intensively discussed yet, which may limit further popularization. In this paper, an overview of published articles about geopolymers containing RBP and/or RCP during the last decade ...

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The Complete Recycling of Waste Concrete to Produce Geopolymer Concrete

 · Abstract. This paper investigates complete recycling and utilization of waste concrete, both the aggregates and the fines from crushing, to produce new concrete through geopolymerization. Based on previous studies and considering the workability of the new geopolymer concrete (GPC), 25% waste concrete fines (WCF), and 75% class-F fly ash (FA ...

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Recycling waste materials in geopolymer concrete | SpringerLink

 · Abstract The widespread industry adoption of geopolymer concrete has the potential to positively contribute to environmental sustainability in both the industrial and construction sectors, through the recycling of waste materials, and the reduction in carbon emissions. Extensive research has been conducted into geopolymers during the past two decades, …

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Properties of pervious geopolymer concrete using recycled …

 · Highlights. Recycled aggregates (RAs) were used to make pervious geopolymer concrete (PGC). PGCs were prepared from high-calcium fly ash geopolymer binder and two different types of RA. Mechanical properties, total void ratio, and water permeability were tested. These RA could be used as coarse aggregates to produce PGC with acceptable properties.

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Experimental Study of Geopolymer Concrete Produced from Waste Concrete | Journal of Materials in Civil Engineering …

This paper investigates complete recycling of waste concrete to produce new geopolymer concrete (GPC). Specifically, GPC was produced using waste concrete fines (WCF) and class-F fly ash (FA) together with mixed sodium hydroxide (NaOH) and sodium silicate ( Na 2 SiO 3 ) solution as the geopolymer binder and waste concrete aggregates (both coarse and fine) as …

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Experimental Study of Geopolymer Concrete Produced from Waste Concrete …

Abstract. This paper investigates complete recycling of waste concrete to produce new geopolymer concrete (GPC). Specifically, GPC was produced using waste concrete fines (WCF) and class-F fly ash (FA) together with mixed sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) solution as the geopolymer binder and waste concrete aggregates (both ...

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Geopolymer Concrete

GGBS is a glassy, granular, non metallic material consisting essentially of silicates and aluminates of calcium and other bases. Slag when ground to less than 45 micron from coarser, popcorn like friable structure, will have a specific surface of about 400 to 600 m2/kg (Blaine). GGBS has almost the same particle size as cement.

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Recycling waste materials in geopolymer concrete

 · Abstract The widespread industry adoption of geopolymer concrete has the potential to positively contribute to environmental sustainability in both the industrial and construction sectors, through the recycling of waste materials, and the reduction in carbon emissions. Extensive research has been conducted into geopolymers during the past two decades, …

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Setting behavior and mechanical properties of concrete rubble fly ash geopolymers

0.439 W m 1K 1, and the geopolymer batch with a fly ash concrete rubble fraction of 50/50 wt % shows the highest raw density of ρ roh = 1.80 gcm 3 with a …

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Life Cycle Impact Assessment of Recycled Aggregate Concrete, Geopolymer Concrete, and Recycled Aggregate-Based Geopolymer Concrete …

 · This study presents a life cycle impact assessment of OPC concrete, recycled aggregate concrete, geopolymer concrete, and recycled aggregate-based geopolymer concrete by using the mid-point approach of the CML 2001 impact-assessment method. The life cycle impact assessment was carried out using OpenLCA software with nine different impact …

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Strength Properties of Geopolymer Concrete Modified with Recycled Aggregates …

 · The above-mentioned results suggested that the incorporation of recycled concrete aggregates and brick aggregates in geopolymer concrete provides an acceptable range of reduction in the strength properties. The compressive strength of GC12, RC12, and RB12 is 7.59, 6.18, and 5.54, respectively.

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Strength and Microstructural Analysis of Geopolymer Prepared with Recycled Geopolymer …

 · The strength and microstructural analysis of recycled geopolymer are presented in this paper. Five kinds of geopolymers containing 0%, 20%, 50%, 80% and 100 % of recycled geopolymer powder were prepared using metakaolin as the source material. The alkali activator solution was a mixture of sodium silicate (Na2SiO3) and 12 M sodium hydroxide (NaOH). The …

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Axial Compressive Behavior of Geopolymer Recycled Lump Concrete

Axial Compressive Behavior of Geopolymer Recycled Lump Concrete. Materials (Basel). 2020 Jan 22;13 (3):533. doi: 10.3390/ma13030533.

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Geopolymer Recycled Aggregate Concrete: From Experiments to …

The interfacial transition zone of geopolymer recycled aggregate concrete (GRAC) was evaluated by microscopic analyses. Then, two empirical models, which are the modified versions of Feret''s and De Larrard''s models, respectively, for cement concretes, were investigated for the prediction of GRAC compressive strength; the parameters of these models were identified.

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Use of recycled aggregates in pressed fly ash geopolymer concrete …

 · Nevertheless, the compressive strength of PRGCs mixed with recycled aggregates was close to the compressive strength for moderate strength lightweight concrete as per ACI 213. Moreover, the lower thermal conductivity and dry density indicated better insulating properties than that of PRGCs containing SD.

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Experimental Study on Recycling of Waste Concrete Based on Geopolymer Technology

 · It can be seen from Fig. 2 that, except the 7-day unconfined compressive strength of the geopolymer recycled concrete with 4.5% gelling material content, the unconfined compressive strength of the geopolymer recycled concrete with the remaining content and age is greater than 3.0 MPa. ...

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Fly Ash Based Geopolymer Concrete with Recycled Concrete …

Keywords: geopolymer, fly-ash, recycled concrete aggregate, compressive strength 1. Introduction 1.1 Environmental Concerns Global warming and climate change are increasingly important issues, with many governments looking at different ways to reduce ...

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Sulfate Resistance of Recycled Aggregate Concrete with GGBS and Fly Ash-Based Geopolymer …

This study focused on the sulfate resistance of this geopolymer recycled aggregate concrete (GRAC). A series of measurements including compression, X-ray diffraction (XRD), and scanning electron microscopy (SEM) tests were conducted to investigate the physical properties and hydration mechanisms of the GRAC after different exposure cycles in a sulfate environment.

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(PDF) Recycling waste materials in geopolymer concrete-p.pdf

Geopolymer concrete produced from ground concrete waste (GCW) and fly ash offers excellent potential for recycling large amounts of concrete waste for a variety of applications. Ahmari et al. (2012) developed a geopolymeric binder from GCW and fly ash of varying proportions. The composition of this mix 14 fimpacted the unconfined compressive ...

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Recycling of Mechanically Ground Wind Turbine Blades as Filler in Geopolymer …

 · Studies have shown that geopolymer concrete has a high compressive strength, good acid resistance, low shrinkage and better binding of heavy metals compared to Portland-cement-based concrete. A life cycle assessment is an analytical tool to measure the impact of the environmental performance of products over their life span, from extraction and operation to …

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Recycling of Fly Ash into Geopolymer Concrete: Creation of a …

 · Recycling of Fly Ash into Geopolymer Concrete: Creation of a Database Abstract: Geopolymer concrete manufactured from several fly ash sources was evaluated. The analysis presented herein is based on the elemental chemical analysis, X-ray diffraction (XRD) and particle size distribution (PSD) of fly ash samples collected from 16 different coal-fired power …

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Geopolymers made of recycled brick and concrete powder – A …

Highlights. •. Preparing geopolymer with recycled brick/concrete powder (RBP/RCP) is feasible. •. Fresh and mechanical properties of geopolymer made of RBP and/or RCP are reviewed. •. Effects of precursor, Na/Si, Si/Al, L/S and curing regime are intensively discussed. •. CO 2 emission of geopolymer made of RBP and/or RCP is ...

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The Complete Recycling of Waste Concrete to Produce Geopolymer Concrete …

Based on previous studies and considering the workability of the new geopolymer concrete (GPC), 25% waste concrete fines (WCF), and 75% class-F fly ash (FA) were used as the geopolymer cement source material, NaOH/Na 2 SiO 3 solution as the alkaline

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Recycling of geopolymer concrete

Recycling is an effective strategy for dealing with geopolymer concrete debris. Abstract Due to its considerably lower embodied carbon and making use of industrial by-products including fly ash and ground granulated blast-furnace slag, geopolymer concrete (GPC) is considered as a sustainable alternative to Portland cement (OPC) concrete.

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