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Journal of Renewable Materials 2021年第11期9卷 1991-1999页

作者： Yongdong Xu Tingshu He College of Materials Science and Engineering Xi’an University of Architecture and TechnologyXi’an710055China

This work aims to utilize waste glass powder(WGP)as a plementary material to mitigate the strength shrinkage caused by the alkaline *** glass power was used to replace cement by 0%,10%,and 20%to evaluate waste glass powder on the alkaline accelerator’s strength *** results show that the strength improvement effect of unitary glass powder is *** methods have been proposed to use sodium sulfate and waste glass powder synergism,using the activity of amorphous silica in glass *** with the reference group,the compressive strength of 28d mortar increases by 67%when the sodium sulfate content is 2.5%,and the replacement amount of waste glass powder is 10%.Besides,XRD and SEM analysis of hydration products also confirmed that the synergistic effect of sodium sulfate and waste glass powder could reduce strength *** findings presented in this paper are pivotal for using waste glass to solve the problem of strength inversion caused by the alkaline accelerator.

关键词： Synergism waste glass powder alkaline accelerator strength inversion

Effect of glass powder on Chloride Ion Transport and Alkali-aggregate Reaction Expansion of Lightweight Aggregate Concrete

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Journal of Wuhan University of Technology(Materials Science) 2009年第2期24卷 312-317页

作者：王智史才军 College of Chemistry and Chemical Engineering Chongqing University College of Civil Engineering Hunan University

The effects of glass powder on the strength development, chloride permeability and potential alkali-aggregate reaction expansion of lightweight aggregate concrete were investigated. Ground blast furnace slag, coal fly ash and silica fume were used as reference materials. The re- placement of cement with 25% glass powder slightly decreases the strengthes at ？ and 28 d, but shows no effect on 90 d＇s. Silica fume is very effective in improving both the strength and chloride penetration resistance, while ground glass powder is much more effective than blast furnace slag and fly ash in improving chloride penetration resistance of the concrete. When expanded shale or clay is used as coarse aggregate, the concrete containing glass powder does not exhibit deleterious expansion even if alkali-reactive sand is used as fine aggregate of the concrete.

关键词： waste glass powder fly ash blast furnace slag silica fume lightweight aggregate chloride permeability alkali-aggregate reaction

Experimental Evaluation of Compressive Strength and Gas Permeability of glass- powder-Containing Mortar

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Fluid Dynamics & Materials Processing 2023年第10期19卷 2639-2659页

作者： Yue Liang Wenxuan Dai Wei Chen School of Civil Engineering Architecture and EnvironmentHubei University of TechnologyWuhan430068China

glass powder of various particle sizes(2,5,10 and 15μm)has been assessed as a possible cement substitute for *** replacement rates of cement(5%,10%,15%,and 20%)have been considered for all particle *** accessible porosity,compressive strength,gas permeability and microstructure have been investigated *** results have shown that adding glass powder up to 20%has a signiﬁcantly negative effect on the porosity and compressive strength of *** compressive strength initially rises with a 5%replacement and then ***,the gas permeability of the mortar displays a non-monotonic behavior;ﬁrst,it decreases and then it grows with an increase in the glass powder content and particle *** porosity and gas permeability attain a minimum for a 5%content and 10μm particle *** of a Nuclear magnetic resonance(NMR)technique has revealed that incorporating waste glass powder with a certainﬁneness can reduce the pore size and the number of pores of the *** with the control mortar,the pore volume of the waste glass mortar with 5%and 10μm particle size is signiﬁcantly *** cement is partially replaced by glass powder with a particle size of 10μm and a 5%percentage,the penetration resistance and compressive strength of the mortar are signiﬁcantly improved.

关键词： waste glass powder mortar porosity gas permeability compressive strength NMR

Influence of Ultra Fine glass powder on the Properties and Microstructure of Mortars

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Fluid Dynamics & Materials Processing 2024年第5期20卷 915-938页

作者： Wei Chen Dingdan Liu Yue Liang School of Civil Engineering Architecture and EnvironmentHubei University of TechnologyWuhan430068China

This study focuses on the effect of ultrafine waste glass powder on cement strength,gas permeability and pore *** contents were considered,with particle sizes ranging from 2 to 20μ***,alkali activation was considered to ameliorate the reactivity and cementitious properties,which were assessed by using scanning electron microscopy(SEM),energy-dispersive X-ray spectroscopy(EDS),and specific surface area pore size distribution *** to the results,without the addition of alkali activators,the performance of glass powder mortar decreases as the amount of glass powder increases,affecting various aspects such as strength and resistance to gas *** 5%glass powder mortar demonstrated a compressive strength at 60 days higher than that of the control ***,adding alkali activator(CaO)during hydration ameliorated the hydration environment,increased the alkalinity of the composite system,activated the reactivity of glass powder,and enhanced the interaction of glass powder and pozzolanic *** general,compared to ordinary cement mortar,alkali-activated glass powder mortar produces more hydration products,showcases elevated density,and exhibits improved gas ***,alkali-activated glass powder mortar demonstrates an improvement in performance across various aspects as the content *** a substitution rate of 15%,the glass powder mortar reaches its optimal levels of strength and resistance to gas permeability,with a compressive strength increase ranging from 28.4%to 34%,and a gas permeation rate reduction between 51.8%and 66.7%.

关键词： Mortar waste glass powder alkali activation compressive strength gas permeability pore structure

Early-Age Properties Development of Recycled glass powder Blended Cement Paste:Strengths,Shrinkage,Nanoscale Characteristics,and Environmental Analysis

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Journal of Renewable Materials 2023年第4期11卷 1835-1852页

作者： Zhihai He Menglu Shen Jinyan Shi Jingyu Chang Víctor Revilla-Cuesta Osman Gencel College of Civil Engineering Shaoxing UniversityShaoxing312000China Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province Shaoxing312000China School of Civil Engineering Central South UniversityChangsha410075China Department of Civil Engineering Escuela Politécnica SuperiorUniversity of Burgosc/Villadiego s/nBurgos09001Spain Civil Engineering Department Bartin UniversityBartin74100Turkey

Recycling solid waste in cement-based materials cannot only ease its load on the natural environment but also reduce the carbon emissions of building *** study aims to investigate the effect of recycled glass powder(RGP)on the early-age mechanical properties and autogenous shrinkage of cement pastes,where cement is replaced by 10%,20%and 30%of *** addition,the microstructure and nano-mechanical properties of cement paste with different RGP content and water to binder(W/B)ratio were also evaluated using SEM,MIP and nanoindentation *** results indicate that the early-age autogenous shrinkage decreases with the increase of RGP content and W/B *** the mechanical strength deteriorates due to the addition of RGP,it can be compensated by reducing the W/B *** the addition of RGP increases the total porosity of the hardened paste,it reduces the small size porosity(<50 nm).In addition,the proportions of different types of C-S-H are changed,and the volume fraction of porosity is increased,but that of hydration products of cement paste is reduced due to the incorporation of *** its pozzolanic activity,the mitigated shrinkage deformation that RGP is generating in cement pastes is encouraging for its use as a novel supplementary cementitious material that reduces the early-age cracking risk of cement-based ***,the life cycle assessments indicate that the RGP-cement component is an economical and eco-friendly novel engineering material.

关键词： Cement paste waste glass powder autogenous shrinkage microstructure nanoindentation