Optimization design for alkali-activated slag-fly ash geopolymer concrete based on artificial intelligence considering compressive strength, cost, and carbon emission

Li, Yue; Shen, Jiale; Lin, Hui; Li, Yaqiang

doi:10.1016/j.jobe.2023.106929

Cited by 17 publications

(4 citation statements)

References 57 publications

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“…The results of XRD, SEM and EDS showed that the growth in strength of alkali-activated white PS geopolymer cement can be considered to be the result of the contribution of geopolymer gel and C-S-H gel. This is similar to the result of Sha (Sha et al, 2021;Han et al, 2023;Li et al, 2023;Mohammed and Yaltay, 2023;Shen et al, 2023;Wu et al, 2023). This study suggested that the strength of geopolymer cement containing active mineral additive can be divided into two parts.…”

Section: Tg/dtg Analysis Of the Hydration Products Of Alkali-activate...supporting

confidence: 89%

Strength development and hydration products of alkali-activated Pisha sandstone geopolymer cement

Dong,

Li,

Shi

et al. 2023

Front. Mater.

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Pisha sandstone (PS) is a unique geological structure in the Yellow River basin in China and is a general term for a rock interlayer composed of sandstone, sand shale, and muddy sandstone. The collapsibility of PS results in a high erosion rate and poor vegetation due to its low diagenetic potential and weak structural strength. This study showed that PS can be converted into geopolymer cement by mixing with a suitable alkali activator. PS was converted to geopolymer cement for construction to control soil erosion and conserve the soil and water in this area. Slag was used as a mineral additive to improve the performance of alkali-active PS geopolymer cement in this study. The influence of slag replacement level, NaOH dosages, and curing age on the compressive strength of alkali-activated PS was investigated. Scanning electron microscopy (SEM)/energy dispersive X-ray (EDS), thermogravimetric analyses (TG/DTG), and X-ray diffraction (XRD) were used to analyze the hydration products and microstructure of alkali-activated PS. The results showed that when the samples had 40 wt.% slag, 1.5 wt.% NaOH, and 4.0 wt.% Na2SiO3, their compressive strength could reach 82.0 MPa at 90 days. Compared with the samples with activator and without activator, the compressive strength increased by 6,664% and 9,011%, respectively. The hydration products were C-S-H gel, geopolymer gel, and calcium carbonate crystals. With 10 wt.% slag as a mineral additive, 1.5 wt.% NaOH, and 4 wt.% Na2SiO3 as an activator, the carbonation ratio of C-S-H gel was 49.3%.

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Section: Tg/dtg Analysis Of the Hydration Products Of Alkali-activate...supporting

confidence: 89%

Strength development and hydration products of alkali-activated Pisha sandstone geopolymer cement

Dong,

Li,

Shi

et al. 2023

Front. Mater.

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“…The concrete formwork is an essential element of construction management since failure to achieve the required concrete strength can result in rework and, as a result, cost and schedule overruns [79]. [55], [58], [66], [67], [72], [73], [88], [96] 9 Supplementary Material rice husk ash [54], [59], [60], [70] 4 Supplementary Material limestone [56], [68] 2 Supplementary Material silicafume [9], [60], [83] 3 Supplementary Material superplasticizer [40], [55], [56], [57], [58], [67], [70], [72], [73], [96] 10 Supplementary Material steel fiber [9], [38], [57], [70], [85], [97] 6 Supplementary Material geopolimer [82], [83] 2 Recycle Material recycle coarse aggregate [58], [63], [68], [84], [85], [91], [94] 7 Recycle Material recycle fine aggregate [63], [84],…”

Section: Construction Methodsmentioning

confidence: 99%

“…Environmental Impact [9], [13], [38], [49], [50], [53], [54], [55], [57], [60], [63], [64], [65], [66], [67], [68], [70], [91], [92], [93], [94], [95], [96], [97] 24…”

Section: Reducementioning

confidence: 99%

Effect of Construction Delays and the Preventive Role of Concrete Works Optimization: Systematic Literature Review

Yudhistira,

Satyarno,

Nugroho

et al. 2024

TEM Journal

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Delays in construction are a widespread global problem, leading to potential cost overruns and legal disputes. Additionally, delays can result in a decline in construction quality and loss of public trust. The aim of this study is to examine the effects of project delays in various regions and the preventive role of optimizing concrete works. Literature review and bibliometric analysis are carried out to determine global research trends. Findings show that optimizing concrete works can provide benefits such as cost savings, time savings, improved quality and safety, and environmental benefits. Optimization of concrete material composition is one of the most examined topics in this field. Based on the findings, construction firms have the potential to attain cost efficiencies while concurrently mitigating carbon emissions.

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“…During the last decades, researchers [11][12][13][14] investigated the substitution of cement by either byproducts or natural pozzolanic materials. Results reveal the ability of substitutional cement materials (SCMs) in to enhance durability and lowering the heat of hydration [15][16][17][18]. In addition, the incorporation of pozzolanic materials produces mixtures with low calcium hydroxide, thus improving resistance to chemical attacks [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

The Efficiency of By-product- Based Geo-polymer Concrete

El-Nadoury

2023

Port-Said Engineering Research Journal

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Geo-polymer concrete (GPC) and industrial byproducts have developed expeditiously as eco-benevolent substitutes for OPC. Whereas elevated curing temperature is essential. This research studies the applicability of producing byproduct-based GPC cured under ambient temperature. The effect of the incorporation of ceramic squander powder (CSP) and rice husk ash (RHA) is assessed. All the investigated mixtures contain 40% Slag, 10% fly ash (FA), and a 50% combination of CSP and RHA. Four different combinations of CSP/RHA; 10/40, 20/30, 30/20, and 40/10 are utilized. w/b ratios; 0.3, 0.4, and 0.45 are tested. Compressive, splitting tensile, and flexural strengths are examined as indicators of mechanical properties. Acid resistance, water absorption, sorptivity, and chloride permeability are evaluated as indicators of durability aspects. The results revealed that the 30/20 combination is optimum in terms of mechanical properties, while all combinations attained applicable durable properties compared to the control mix with 90% slag and 10% FA.

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Optimization design for alkali-activated slag-fly ash geopolymer concrete based on artificial intelligence considering compressive strength, cost, and carbon emission

Cited by 17 publications

References 57 publications

Strength development and hydration products of alkali-activated Pisha sandstone geopolymer cement

Strength development and hydration products of alkali-activated Pisha sandstone geopolymer cement

Effect of Construction Delays and the Preventive Role of Concrete Works Optimization: Systematic Literature Review

The Efficiency of By-product- Based Geo-polymer Concrete

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