Optimization of Geopolymer Concrete by Principal Component Analysis

Elaty, Metwally Abd Allah Abd; Ghazy, Mariam Farouk; Hameed, Mohamed Fattouh Abd El

doi:10.14359/51689563

Cited by 7 publications

(5 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For [26], the PCA was used to transform the correlated properties of the concrete to obtain combinations of parameters for multiple performance characteristic indexes and consequently optimize the properties of the fiber-reinforced geopolymer composites. In this paper, PCA was combined with the Taguchi Method.…”

Section: Principal Component Analysismentioning

confidence: 99%

Exploring Analytical Hierarchy Process for Multicriteria Assessment of Reinforced Concrete Slabs

Salomão,

Pinheiro

2023

Applied Sciences

View full text Add to dashboard Cite

The decision regarding which slab type should be used in a building is generally made by the structural engineer, considering structural efficiency and compatibility with the architectural design, as well as the costs related to the amount of material used in each option. Because of the technical responsibilities inherent to this specialty, the decision-making process neglects to encompass various other factors of consequence that influence the construction process. These considerations include productivity, the visual and aesthetic characteristics of the slab, waste generation, and thermal and acoustic comfort. This paper aims to develop a multicriteria method to assist stakeholders in selecting the most suitable structural system for slabs based on project needs and objectives. The study utilized the Analytic Hierarchy Process (AHP) and information from bibliographic research, expert opinion using the Delphi Method, and machine learning on a dataset of over 2000 previously constructed slabs to achieve this goal. The analysis showed that the conventional solid slab type was the top priority, followed by the two-way waffle slab, one-way waffle slab, solid flat slab, and waffle slab. Additionally, the proposed AHP method was effective in developing a decision-making model for companies and the construction sector.

show abstract

Section: Principal Component Analysismentioning

confidence: 99%

Exploring Analytical Hierarchy Process for Multicriteria Assessment of Reinforced Concrete Slabs

Salomão,

Pinheiro

2023

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Therefore, in this work, an effort has been made to use Taguchi's method to achieve the optimal amounts of the components of alkali-activated geopolymer concrete and to investigate using Analysis of Variance (ANOVA) the key factors influencing the workability, and compressive and flexural strengths of concrete. Literature study revealed the use of full as well as the fractional factorial method of design of experiments followed by other methods of optimization such as the Taguchi method, response surface analysis, Principal Component Analysis, and AI-based predicted models such as the Genetic Algorithm (GA) and AI-based regression techniques such as Genetic Programming (GP), Enhanced Polynomial Regression (EPR), and Artificial Neural Networks (ANN) [40][41][42][43]. The Taguchi method has successfully been implemented to the derive optimum design mix for geopolymer concrete [44].…”

Section: Introductionmentioning

confidence: 99%

Development of GGBS-Based Geopolymer Concrete Incorporated with Polypropylene Fibers as Sustainable Materials

Thakur

Singh

et al. 2022

Sustainability

View full text Add to dashboard Cite

Geopolymer concrete, because of its less embodied energy as compared to conventional cement concrete, has paved the way for achieving sustainable development goals. In this study, an effort was made to optimize its quality characteristics or responses, namely, workability, and the compressive and flexural strengths of Ground Granulated Blast-furnace Slag (GGBS)-based geopolymer concrete incorporated with polypropylene (PP) fibers by Taguchi’s method. A three-factor and three-level design of experiments was adopted with the three factors and their corresponding levels as alkali ratio (NaOH:Na2SiO3) (1:1.5 (8 M NaOH); 1:2 (10 M NaOH); 1:2.5 (12 M NaOH)), percentage of GGBS (80%, 90%, and 100%) and PP fibers (1.5%, 2%, and 2.5%). M25 was taken as the control mix for gauging and comparing the results. Nine mixes were obtained using an L9 orthogonal array, and an analysis was performed. The analysis revealed the optimum levels as 1:2 (10 molar) alkali ratio, 80% GGBS, and 2% PP fibers for workability; 1:2 (10 molar) alkali ratio, 80% GGBS, and 2.5% PP fibers for compressive strength; and 1:2 (10 molar) alkali ratio, 80% GGBS, and 1.5% PP fibers for flexural strength. The percentage of GGBS was found to be the most effective parameter for all three responses. The analysis also revealed the ranks of all the factors in terms of significance in determining the three responses. ANOVA conducted on the results validated the reliability of the results obtained by Taguchi’s method. The optimized results were further verified by confirmation tests. The confirmation tests revealed the compressive and flexural strengths to be quite close to the strengths of the control mix. Thus, optimum mixes with comparable strengths were successfully achieved by replacing cement with GGBS and thereby providing a better path for sustainable development.

show abstract

“…Nowadays, geopolymer concrete (GP) has become a significant and growing research subject in the civil engineering field because it has the potential to satisfy mechanical, durability, and sustainability requirements [1,2]. Unlike traditional Portland cementbased concrete (TC), GP can be formed by mixing any material that is rich in silicon and aluminum in an amorphous form with alkaline activator solutions (i.e., sodium hydroxide solution and sodium silicate) [3]. Numerous research studies have reported that GP yielded remarkable mechanical properties, excellent thermal stability, low creep and shrinkage, and higher sulfate and corrosion resistance compared to TC [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Aggregate Types on the Mechanical Properties of Traditional Concrete and Geopolymer Concrete

Alanazi

2021

Crystals

View full text Add to dashboard Cite

For the same concrete quality, different types of coarse aggregates may result in different mechanical properties. This paper presents a study on the effect of aggregate types on the mechanical properties of two concretes, namely, geopolymer concrete (GP) and traditional Portland cement (TC) concrete. The mechanical properties were investigated through several large-scale tests. Moreover, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and laser scanning microscope (LSM) images were obtained to study the microstructure of tested mixes. The results revealed that the aggregate type has different effects on the mechanical properties of TC and GP, as they were behaving opposite to quartz and limestone aggregates. Microstructure analysis further confirmed the growth of well-bonded regions between the paste and aggregate in the GP with limestone aggregates, and the formation of several weak interfacial zones in concrete mixtures made with quartz aggregates. It was concluded that the mechanical properties of GP are very sensitive to the stiffness of aggregate, concentrations of stress, and the physical and chemical reactions occurring in the interfacial transition zone which may lead to improved or weakened bond strength between paste and aggregates.

show abstract

Optimization of Geopolymer Concrete by Principal Component Analysis

Cited by 7 publications

References 18 publications

Exploring Analytical Hierarchy Process for Multicriteria Assessment of Reinforced Concrete Slabs

Exploring Analytical Hierarchy Process for Multicriteria Assessment of Reinforced Concrete Slabs

Development of GGBS-Based Geopolymer Concrete Incorporated with Polypropylene Fibers as Sustainable Materials

Effect of Aggregate Types on the Mechanical Properties of Traditional Concrete and Geopolymer Concrete

Contact Info

Product

Resources

About