Optimization of sustainable high-strength–high-volume fly ash concrete with and without steel fiber using Taguchi method and multi-regression analysis

Kate, Gunavant K.; Nayak, Chittaranjan B.; Thakare, Sunil B.

doi:10.1007/s41062-021-00472-6

Cited by 41 publications

(11 citation statements)

References 28 publications

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“…There is a good conformity between the experimental and the predicted results: qu, predicted=0.987qu, experimental. These results are confirmed with other researchers for the feasibility and robustness of the Taguchi method [37,38] and desirability function approach [31,39]. q 0.5 = -33.7 + 9.51C + 5.90F -0.315A + 57.6(w/b) -0.911wn + 0.124P -0.583CF -7.1C(w/b) + 0.0014CP -4.96F(w/b) + 0.0219FP + 0.560CF(w/b) -0.00151CFP (6)…”

Section: Unconfined Compression Strength (Ucs) Testsupporting

confidence: 91%

Investigating the construction parameters of deep mixing columns in silty soils

Yenginar

Mobark

Olgun

2021

International Advanced Researches and Engineering Journal

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In the present research, the optimum condition of the grout consisting of cement, fly ash, superplasticizer, and water was determined to produce the most durable and impermeable deep mixing columns (DMC) on silty soils. It is aimed to reduce the grout cost and environmental pollution by using high-rate fly ash in the grout. Superplasticizer additive was used to increase the flow consistency of grout consisting of high-rate fly ash. The design of the experiments was made using the 5-parameter and 4-level L16 orthogonal array table specific to the Taguchi method. Accordingly, the unconfined compression strength (qu) and the permeability coefficient (k) of the soil-binder mixtures at the end of the 7-and 28-days curing time were determined. According to the test results, regression analyzes were performed and models with high reliability were created for qu and k. As a result of optimization studies, to produce DMC having high strength and low permeability, grout content should be consisting of 14% cement, 14% fly ash (ratio of fly ash in the binder is 50%), 2.68% super plasticizer additive, and 0.95 water/binder ratio. The pozzolanic reactions in soil-binder samples with different grout contents were examined by SEM analysis.

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Section: Unconfined Compression Strength (Ucs) Testsupporting

confidence: 91%

Investigating the construction parameters of deep mixing columns in silty soils

Yenginar

Mobark

Olgun

2021

International Advanced Researches and Engineering Journal

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“…Kate et al [37] evaluated and optimized the long-term mechanical characteristics of concrete reinforced with crimped steel fibers. Multiple regression analysis was used to examine the extent of FA influence on the mechanical characteristics of concrete.…”

Section: Optimization Methodsmentioning

confidence: 99%

Multi-Objective Optimization of Sustainable Concrete Containing Fly Ash Based on Environmental and Mechanical Considerations

et al. 2022

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Infrastructure design, construction and development experts are making frantic efforts to overcome the overbearing effects of greenhouse gas emissions resulting from the continued dependence on the utilization of conventional cement as a construction material on our planet. The amount of CO2 emitted during cement production, transportation to construction sites, and handling during construction activities to produce concrete is alarming. The present research work is focused on proposing intelligent models for fly ash (FA)-based concrete comprising cement, fine and coarse aggregates (FAg and CAg), FA, and water as mix constituents based on environmental impact (P) considerations in an attempt to foster healthier and greener concrete production and aid the environment. FA as a construction material is discharged as a waste material from power plants in large amounts across the world. Its utilization as a supplementary cement ensures a sustainable waste management mechanism and is beneficial for the environment too; hence, this research work is a multi-objective exercise. Intelligent models are proposed for multiple concrete mixes utilizing FA as a replacement for cement to predict 28-day concrete compressive strength and life cycle assessment (LCA) for cement with FA. The data collected show that the concrete mixes with a higher amount of FA had a lesser impact on the environment, while the environmental impact was higher for those mixes with a higher amount of cement. The models which utilized the learning abilities of ANN (-BP, -GRG, and -GA), GP and EPR showed great speed and robustness with R2 performance indices (SSE) of 0.986 (5.1), 0.983 (5.8), 0.974 (7.0), 0.78 (19.1), and 0.957 (10.1) for Fc, respectively, and 0.994 (2.2), 0.999 (0.8), 0.999 (1.0), 0.999 (0.8), and 1.00 (0.4) for P, respectively. Overall, this shows that ANN-BP outclassed the rest in performance in predicting Fc, while EPR outclassed the others in predicting P. Relative importance analyses conducted on the constituent materials showed that FA had relatively good importance in the concrete mixes. However, closed-form model equations are proposed to optimize the amount of FA and cement that will provide the needed strength levels without jeopardizing the health of the environment.

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“…e inclusion of 0.03-1 vol% fiber, especially straight steel fiber and polyester fiber, can slightly improve the compressive strength of HVFA mixtures [37,46,57,137,140,141]. is improvement is attributed to the ability of the small fibers to delay the microcracks formation and arrest their propagation [142]. As a result, the admixed fibers can delay the cracking in concrete upon loading and thus compensate for the strength loss due to the fly ash substitution for cement [57].…”

Section: Inclusion Of Fibersmentioning

confidence: 99%

High‐Volume Fly Ash‐Based Cementitious Composites as Sustainable Materials: An Overview of Recent Advances

Zhao

Shi

2021

Advances in Civil Engineering

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High-volume fly ash (HVFA) cementitious composites (paste, grout, mortar, and concrete) have been widely investigated as a class of sustainable materials due to their lower carbon footprint and often better life cycle performance than conventional Portland cement mixtures. Recent years have seen increased research in HVFA-based materials, and the potential of this type of mixtures in engineering applications has significantly improved. In this context, this work reviews the renewed knowledge of HVFA mixtures, focusing on the relevant papers published over the last decade. The effects of replacing cement with a HVFA binder on the fresh properties, mechanical properties, durability performance, and environmental impact of HVFA cementitious composites are explored. Measures that can compensate for the main drawbacks that limit the wider application of HVFA mixtures are discussed in detail. At last, we summarize the research needs and remaining challenges of HVFA cementitious composites.

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Optimization of sustainable high-strength–high-volume fly ash concrete with and without steel fiber using Taguchi method and multi-regression analysis

Cited by 41 publications

References 28 publications

Investigating the construction parameters of deep mixing columns in silty soils

Investigating the construction parameters of deep mixing columns in silty soils

Multi-Objective Optimization of Sustainable Concrete Containing Fly Ash Based on Environmental and Mechanical Considerations

High‐Volume Fly Ash‐Based Cementitious Composites as Sustainable Materials: An Overview of Recent Advances

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