Ultra high performance and high strength geopolymer concrete

Nodehi, Mehrab; Aguayo, Federico

doi:10.1007/s41024-021-00130-5

Cited by 29 publications

(12 citation statements)

References 147 publications

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“…Metakaolin, anhydrous calcined form of kaolinite, after being heated in temperatures around 500 to 800 °C is obtained and is generally formed in porcelain production process. Its use in construction industry was first exercised as precursor in low calcium alkali-activated materials (geopolymer) [70,71] where the start of polymerization in highly alkaline environment requires high curing temperature or a highly reactive precursor. To avoid the need for thermal curing, metakaolin (often referred to as MK-750) which is instable in high alkalinity is used as the major binding agent [70].…”

Section: Metakaolinmentioning

confidence: 99%

Applying Circular Economy to Construction Industry through Use of Waste Materials: A Review of Supplementary Cementitious Materials, Plastics, and Ceramics

Nodehi

Taghvaee

2022

Circ.Econ.Sust.

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Due to constant growth of waste production, recent strategies in waste management such as circular economy promote the maximum life cycle use of materials. In construction industry where structures tend to last for decades, the use of such recycled materials can have numerous benefits including overall reduction in cost, in use of virgin materials, and in CO2 production as well as providing an opportunity for a tailored concrete with specific properties. Yet, because of the stereotypical and negative image of mechanical properties reduction, as a result of using waste materials, often their vast contribution in sustainability and durability properties are not taken into consideration. In this regard, we propose viewing waste materials as secondary raw materials that in certain regards, can provide a favorably tailored property. In this regard, the following review article first provides a short description of the most commonly used waste materials such as supplementary cementitious materials (fly ash, ground granulated blast furnace slag, silica fume, metakaolin, rice husk ash, municipal solid waste ash, steel slag, copper slag), ceramics from construction and demolition (glass powder, brick and tile ceramic and porcelain), and the vastly available plastic materials (polypropylene, polyethylene terephthalate, polyvinyl chloride, and rubber). Then, by reviewing a selected environmental impact (life cycle assessment), physicochemical, durability, and finally mechanical properties discuss the limitations, future projections of newer waste materials (e.g., agricultural waste) to be used and suggest potential future study in this area.

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Section: Metakaolinmentioning

confidence: 99%

Applying Circular Economy to Construction Industry through Use of Waste Materials: A Review of Supplementary Cementitious Materials, Plastics, and Ceramics

Nodehi

Taghvaee

2022

Circ.Econ.Sust.

Self Cite

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“…The samples were placed over steel rods to ensure the unidirectional water flow, as shown in Figure 1a. At selected intervals (1,2,3,4,5,9,12,16,20, and 25 min), the samples were taken out from the water and weighed after the excess water was blotted off. Then the samples were again placed in the water.…”

Section: Sorptivity Testmentioning

confidence: 99%

“…GPC produced with lightweight aggregates and recycled rubber or plastics using foaming techniques can result in better durability properties such as lower thermal conductivity and better mechanical properties for lightweight aggregate-based geopolymer [11]. Recent studies on the ultra-high performance and high-strength geopolymer concrete incorporating admixtures like silica fume, quartz sand, steel fibre, etc., exhibit better thermo-mechanical and durability properties than conventional concrete [12].…”

Section: Introductionmentioning

confidence: 98%

Effect of Hybrid Fibres on the Durability Characteristics of Ternary Blend Geopolymer Concrete

2021

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The need to develop sustainable concrete in the civil infrastructure industry increases day by day, resulting in new eco-friendly materials such as geopolymer concrete. Geopolymer concrete is one of the eminent alternatives to conventional concrete for sustainable development by reducing the carbon footprint. Ternary blend geopolymer concrete (TGPC) is a sustainable and environmentally friendly concrete produced with three different source materials to form a binder. The main advantage of TGPC is that it possesses densely packed particles of different shapes and sizes, which results in improved properties. This paper deals with the experimental investigations to evaluate the durability properties of plain and hybrid fibre reinforced TGPC. The durability of concrete is defined as the ability to withstand a safe level of serviceability and different environmental exposure conditions without any significant repair and rehabilitation throughout the service life. Conventional concrete is vulnerable to cracking due to its low tensile and durability properties. The TGPC considered in this work consists of fly ash, GGBS and metakaolin as source materials, selected mainly based on the material’s silica and alumina content, shape, size, and availability. The grade of concrete considered was M55. The main variables considered in this study were the proportions of crimped steel fibres (Vf), viz., 0.5% and 1% and proportions of polypropylene fibres (Vp)viz., 0.1%, 0.15%, 0.20% and 0.25%. The durability properties like water absorption, sorptivity, resistance to marine attack, acid attack, sulphate attack, and abrasion were studied in this investigation. The experimental test results were compared with the requirements provided in the standard/literature and found to be well within limits. The study also indicates that the inclusion of fibres in a hybrid form significantly improves the durability parameters of TGPC. The TGPC with 1% steel fibre and 0.15% polypropylene fibre performs better than the other combination of fibres considered in this experimental investigation.

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“…Kazemian et al [ 18 ] conducted experimental research on the compressive strength, flexural strength, and fracture energy of recycled concrete, and compared the mechanical properties of treated and untreated recycled concrete. There are also some scholars who have carried out research works in this field or other types of concrete [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Tensile Strength and Failure Mechanism Based on Parallel Homogenization Model for Recycled Concrete

et al. 2021

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In this paper, a parallel homogenization model for recycled concrete was proposed. A new type of finite element method, the base force element method, based on the complementary energy principle and the parallel homogenization model, is used to conduct meso-level damage research on recycled concrete. The stress–strain softening curve and failure mechanism of the recycled concrete under uniaxial compression load are analyzed using the nonlinear damage analysis program of the base force element method based on the parallel homogenization model. The tensile strength and destructive mechanisms of recycled concrete materials are studied using this parallel homogenization model. The calculation results are compared with the results of the experiments and meso-level random aggregate model analysis methods. The research results show that this parallel homogenization analysis method can be used to analyze the nonlinear damage analysis of recycled concrete materials. The tensile strength, stress–strain softening curve, and crack propagation process of recycled concrete materials can be obtained using the present method.

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Ultra high performance and high strength geopolymer concrete

Cited by 29 publications

References 147 publications

Applying Circular Economy to Construction Industry through Use of Waste Materials: A Review of Supplementary Cementitious Materials, Plastics, and Ceramics

Applying Circular Economy to Construction Industry through Use of Waste Materials: A Review of Supplementary Cementitious Materials, Plastics, and Ceramics

Effect of Hybrid Fibres on the Durability Characteristics of Ternary Blend Geopolymer Concrete

Analysis of Tensile Strength and Failure Mechanism Based on Parallel Homogenization Model for Recycled Concrete

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