Ecofriendly geopolymer concrete: a comprehensive review

Saranya, P.; Nagarajan, Praveen; Pallikkara, Shashikala Aikot

doi:10.1007/s10098-021-02085-0

Cited by 93 publications

(37 citation statements)

References 100 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the addition of these materials with alkaline solvents such as Sodium silicate (Na 2 SiO 3 ) and sodium hydroxide (NaOH) produces viable and eco-friendly environmental concrete such as geopolymer concrete (GPC) [ 16 , 17 , 18 , 19 ]. The amorphous gel form of GPC possesses many outstanding and attractive characteristics, including resistance to sulfate attack, acid resistance, enhanced durability, fire resistance, and an undoubtedly greater compressive strength than conventional concrete [ 12 , 20 , 21 , 22 , 23 ]. Likewise, their use in the construction industry can extensively lessen CO 2 emissions in the atmosphere [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Prediction of Mechanical Properties of Fly-Ash/Slag-Based Geopolymer Concrete Using Ensemble and Non-Ensemble Machine-Learning Techniques

et al. 2022

View full text Add to dashboard Cite

The emission of greenhouse gases and natural-resource depletion caused by the production of ordinary Portland cement (OPC) have a detrimental effect on the environment. Thus, an alternative means is required to produce eco-friendly concrete such as geopolymer concrete (GPC). However, GPC has a complex cementitious matrix and an ambiguous mix design. Aside from that, the composition and proportions of materials utilized may have an impact on the compressive strength. Similarly, the use of robust and efficient machine-learning (ML) approaches is now required to forecast the strength of such a composite cementitious matrix. As a result, this study anticipated the compressive strength of GPC with waste resources using ensemble and non-ensemble ML algorithms. This was accomplished through the use of Anaconda (Python). To build a strong ensemble learner by integrating weak learners, adaptive boosting, random forest (RF), and ensemble learner bagging were employed. Furthermore, ensemble learners were utilized on non-ensemble or weak learners, such as decision trees (DT) and support vector machines (SVM) via regression. The data encompassed 156 statistical samples in which nine variables, namely superplasticizer (kg/m3), fly ash (kg/m3), ground granulated blast-furnace slag (GGBS), temperature (°C), coarse and fine aggregate (kg/m3), sodium silicate (Na2SiO3), and sodium hydroxide (NaOH), were chosen to anticipate the results. Exploring it in depth, twenty sub-models with ensemble boosting and bagging approaches were trained, and tuning was performed to achieve the highest possible coefficient of determination (R2). Moreover, cross K-Fold validation analysis and statistical checks were performed via indicators for the evaluation of the models. The result revealed that ensemble approaches yielded robust performance compared to non-ensemble algorithms. Generally, an ensemble learner with the RF and bagging approach on a DT yielded robust performance by achieving a better R2 as 0.93, and with the lowest statistical errors. The communal model in artificial-intelligence analysis, on average, improved the accuracy of the model.

show abstract

Section: Introductionmentioning

confidence: 99%

Prediction of Mechanical Properties of Fly-Ash/Slag-Based Geopolymer Concrete Using Ensemble and Non-Ensemble Machine-Learning Techniques

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Various reports have demonstrated that geopolymers are extremely adaptable depending on their structure and could be used in combination with a variety of substances to meet different demands. The low economic cost and the simple preparation process make geopolymers the most promising innovative inorganic porous materials of modern society in the fields of construction, metallurgy, environmental management, fire protection, civil engineering, aviation, soil remediation and catalysis [ 66 , 69 , 70 , 71 , 72 ].…”

Section: Geopolymer Reaction Mechanism and Research Statusmentioning

confidence: 99%

Research and Application Progress of Geopolymers in Adsorption: A Review

Zhao

et al. 2022

Nanomaterials

View full text Add to dashboard Cite

Geopolymer is a porous inorganic material with a three-dimensional mesh structure, good mechanical properties, a simple preparation process (no sintering) and a low economic cost, and it is environmentally friendly. Geopolymer concrete has been widely used in the construction field, and many other studies have revealed that geopolymer will become one of the most promising inorganic materials with unique structure and properties. This paper provides a review of the development and current status of geopolymers and briefly explains the effects of material proportioning, experimental factors and activators on geopolymer performance. Because of the advantages of high specific surface area and high porosity, geopolymers could be used as adsorbent materials. This paper summarizes the research progresses of the adsorption of metal cations, anions, dyes, and gases by geopolymers, which emphasizes the geopolymer membranes in adsorption, and discusses the challenges and opportunities for the development of more efficient, sustainable and practical adsorption protocols.

show abstract

“…Due to the high environmental impact of conventional concrete production, the development of geopolymer concrete is considered the most important innovation in the construction sector [ 146 ]. The addition of fly ash or granulated blast-furnace slag into concrete leads to environmental advantages such as reducing CO 2 emissions and increased waste reuse [ 147 ].…”

Section: Application Of Steel Fibers In Different Types Of Concretementioning

confidence: 99%

A Comprehensive Analysis of the Use of SFRC in Structures and Its Current State of Development in the Construction Industry

et al. 2022

View full text Add to dashboard Cite

In recent years, concrete technology has advanced, prompting engineers and researchers to adopt advanced materials to improve strength and durability. Steel-fiber-reinforced concrete (SFRC) represents the substantial modification of concrete materials to improve their structural properties, particularly their flexural and tensile strength. Whether SFRC is stronger than conventional concrete depends on a variety of variables, including the volume, size, percentage, shape, and distribution of fibers. This article provides a comprehensive discussion of the properties of SFRC, such as durability, fire resistance, and impact resistance or blast loading, as well as the application of SFRC in structural members including beams, columns, slabs, and walls. The application of steel fibers in various types of concrete, including pre-stressed, pre-cast, self-compacting, and geopolymer concrete, was also examined in this comparative analysis review, and recommendations for the future scope of SFRC were identified.

show abstract

Ecofriendly geopolymer concrete: a comprehensive review

Cited by 93 publications

References 100 publications

Prediction of Mechanical Properties of Fly-Ash/Slag-Based Geopolymer Concrete Using Ensemble and Non-Ensemble Machine-Learning Techniques

Prediction of Mechanical Properties of Fly-Ash/Slag-Based Geopolymer Concrete Using Ensemble and Non-Ensemble Machine-Learning Techniques

Research and Application Progress of Geopolymers in Adsorption: A Review

A Comprehensive Analysis of the Use of SFRC in Structures and Its Current State of Development in the Construction Industry

Contact Info

Product

Resources

About