Insulation efficiency of alkali-activated lightweight mortars containing different ratios of binder/expanded perlite fine aggregate

Rashad, Alaa M.; Khalil, Mervat H.; El-Nashar, M. H.

doi:10.1007/s41062-021-00524-x

Cited by 10 publications

(2 citation statements)

References 66 publications

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“…Table 3. Literature review on the influence of nano silica, ultra-fine fly ash, silica fume, slag, and hydrated lime on HVFA binder strength [17,65,[69][70][71][72][73][74][75][76][77]. [78] reported an increase in compressive strength from 22 MPa at 0% Na 2 SO 4 to 37 MPa at 4% Na 2 SO 4 on day 98 and from 3% to 17% after 1 day [41].…”

Section: Effect Of W/b Ratio On Strengthmentioning

confidence: 99%

Strength and Durability Properties of High-Volume Fly Ash (HVFA) Binders: A Systematic Review

Runganga,

Okonta,

Musonda

2024

CivilEng

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South Africa is endowed with a wealth of coal-fired power stations that can produce extremely high volumes of fly ash per year exceeding 34 million tonnes. The use of high-volume fly ash (HVFA) binders in the construction sector has the capacity to significantly reduce greenhouse gas emissions associated with traditional cement production and offset the carbon footprint of Eskom. The excessive production of fly ash by Eskom warrants the need for developing ultra-high-volume fly ash binders (UHVFA, fly ash/binder > 60 wt%). Nonetheless, fly ash (FA) replacement of cement is still largely limited to 35% regardless of more ambitious research indicating the potential to surpass 60%. In view of the urgent need for South Africa to offset and reduce its carbon footprint, this work reviews and summarises the literature on the performance of HVFA binders with a focus on two specific areas: (i) strength and (ii) durability. On HVFA binder strength, the focus is drawn on work that analysed the compressive strength, flexural strength, and split tensile strength. This review focuses on the extant literature analysing the durability of HVFA binders using various tests, including sorptivity, resistivity, permeability, tortuosity, rapid chloride penetration tests, resistance to sulphate attack, and microstructural analysis. As the FA content increases towards optima, i.e., 50–80%, the most indicative composite characteristics of the strength and durability properties are UCS (30–90 MPa) and permeability (low). This review reveals the leading methodologies, instrumentation, findings, challenges, and contradictions.

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Section: Effect Of W/b Ratio On Strengthmentioning

confidence: 99%

Strength and Durability Properties of High-Volume Fly Ash (HVFA) Binders: A Systematic Review

Runganga,

Okonta,

Musonda

2024

CivilEng

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“…Based on the improvement of the standard unit of the small town ecological landscape planning and governance simulation model, Xiu et al proposed an adaptive model of small town ecological landscape planning and governance based on neural network algorithm and used the normalization method to collect the nodes of the differences in spatial layout of different small towns. The three-dimensional simulation of small town ecological landscape is realized by neural network algorithm [ 5 ]. Huiying et al found that most towns still follow the traditional ideas of town ecological landscape planning and governance in the process of planning and governance, ignoring the utilization of intelligent information technology and the application of green environmental protection materials [ 6 ].…”

Section: Related Workmentioning

confidence: 99%

Research on Town Ecological Landscape Planning and Governance Based on Fuzzy Optimization Method of Internet of Things Technology

Ying

Jiang

Ren

2022

Computational Intelligence and Neuroscience

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The current town ecological landscape planning and governance methods are mainly based on the high quality, high energy-saving, and environmental protection effect of the town ecological landscape. How to innovate the town ecological landscape planning and governance process with the help of Internet of things technology and fuzzy optimization method is the current development trend. Based on this, this paper studies the application of Internet of things technology in town ecological landscape planning and management. Firstly, a small town ecological landscape evaluation model based on fuzzy optimization algorithm is proposed. Combined with multivariate matrix transformation function, the authenticity data of ecological landscape are simulated. The original analysis of different types of small town ecological landscape is realized by selecting the multivariate extremum of autocorrelation function curve in the process of planning and governance. Secondly, in the simulation evaluation link, the fuzzy evaluation method is adopted and improved. At the same time, the improved three-dimensional original planning governance model is used to comprehensively analyze the simulation results of three-dimensional landscape planning governance. Finally, by designing fuzzy simulation experiments, the application effects of different Internet of things technologies in town ecological landscape planning and governance are analyzed. The experimental results show that the correlation data indicators of fuzzy optimization methods corresponding to different Internet of things technologies are very different. The application effect of different types of Internet of things technology in ecological landscape planning and governance of small towns is targeted and shows strong regularity.

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Introduction

Rashad

2024

SpringerBriefs in Applied Sciences and Technology

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Insulation efficiency of alkali-activated lightweight mortars containing different ratios of binder/expanded perlite fine aggregate

Cited by 10 publications

References 66 publications

Strength and Durability Properties of High-Volume Fly Ash (HVFA) Binders: A Systematic Review

Strength and Durability Properties of High-Volume Fly Ash (HVFA) Binders: A Systematic Review

Research on Town Ecological Landscape Planning and Governance Based on Fuzzy Optimization Method of Internet of Things Technology

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