Journal of Sustainable Cement-Based Materials最新文献

{"title":"Improvement in mechanical properties and microstructure of electric arc furnace slag bricks by microbial accelerated carbonation","authors":"Yilin Su, Peng Jin, Q. Zhan","doi":"10.1080/21650373.2022.2153283","DOIUrl":"https://doi.org/10.1080/21650373.2022.2153283","url":null,"abstract":"In this paper, the promising way to utilize EAF (electric arc furnace) slag as a cementitious material has been studied by employing microbially accelerated carbonation technology. Under the conditions of cation supplementation and accelerated carbonation of bacteria, the highest compressive strength of the samples could achieve 18 MPa in this research. The changes in minerals and microstructures during the carbonation and microbial carbonation have been observed by X-ray diffraction (XRD), thermogravimetric analysis (TG), and mercury intrusion porosimetry (MIP). Carbonic anhydrase-producing microorganisms have obvious acceleration effects in the carbonation process, making the matrix compact and improving the mechanical properties. Besides, the treatment method of accelerating carbonation by microorganisms could effectively inhibit the leaching of heavy metals in the EAF slag. This paper provides a reference for the potential applications of EAF slag in engineering and reveals the mechanism of microbial acceleration. Highlights Industrial waste electric arc furnace (EAF) slag was used as a cementitious material and could fix carbon dioxide. Microbial technology promotes the deposition of calcium carbonate (1–5 μm) to fill pores over 1 μm. Microbial accelerated carbonated EAF bricks could reduce the leaching of heavy metals.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"12 1","pages":"1033 - 1047"},"PeriodicalIF":4.4,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45163731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioconcrete based on sulfate-reducing bacteria granules: cultivation, mechanical properties, and self-healing performance","authors":"K. Chetty, U. Garbe, Zhiyang Wang, Shuxin Zhang, Timothy E. McCarthy, F. Hai, Guangming Jiang","doi":"10.1080/21650373.2022.2153389","DOIUrl":"https://doi.org/10.1080/21650373.2022.2153389","url":null,"abstract":"Using waste-activated sludge as a source for non-axenic sulfate-reducing bacterial (SRB) granules, this study developed an innovative bioconcrete with 1% and 2% SRB granules. The mechanical properties (AS 1012.9 and AS 1012.21) and self-healing performance of bioconcrete was systematically examined. The 28-d compressive strength of bioconcrete samples met the design requirement of 50 MPa and the general limit of 13% for average volume of permeable voids (AVPV). Within 3–4 weeks, both 1% and 2% bioconcrete samples precipitated 300–400 µm of calcite in different water media such as glucose, calcium acetate, tap water, and real wastewater. The SEM analysis revealed that SRB granules survived mortar incorporation and precipitated calcium carbonate in the form of calcite which were further confirmed by EDS and XRD analysis. The tap water healed 1% and 2% bioconcrete samples had water permeabilities 64.2% and 69.9% lower than the control, respectively. The mass loss in 5% sulfuric acid was 3.8% and 3.2% less, respectively, for 1% and 2% bioconcrete specimens with surface calcite deposition after 120 d.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"12 1","pages":"1049 - 1060"},"PeriodicalIF":4.4,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47668805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A simple method for quantifying the size effect on fiber orientation distribution functions (ODFs) in fiber-reinforced concrete","authors":"Q. Luo, Fengjuan Wang, Wenxiang Xu, Jin-yang Jiang, Guowen Sun, Liguo Wang","doi":"10.1080/21650373.2022.2151054","DOIUrl":"https://doi.org/10.1080/21650373.2022.2151054","url":null,"abstract":"Fiber orientations are constrained by boundary effects (e.g. size effect), which play a significant role in the macroscopic rigidity of fiber-reinforced concrete (FRC). However, how to quantify the size effect on the fiber orientation distribution functions (ODFs) remain to be open issues. In this work, a simple method to quantify the sectional-size impact on fiber ODFs is proposed. By disassembling the fiber rotatable range and fiber location on the cross-section into several small facets and points, respectively, we draw out the fiber ODFs with different sectional sizes through superposition. Then, the calculation method of the fiber orientation factor based on the ODF is proposed, and the framework of applying an ODF to calculate the stiffness matrix is given. Our results revealed the influence of the cross-section size on the elastic properties of FRC, which can provide a sound guidance for the design and optimization of fiber-based cement composites. Highlights 1. A practical method for discretizing the cross-section of fiber-reinforced concrete (FRC) into a point set is proposed. 2. A quantitative interplay between boundary constraints and size effects on fiber ODFs is developed. 3. The calculation framework of the fiber orientation factor and elastic modulus of the FRC based on the ODF is established. 4. The difference between the effective elastic modulus and Poisson’s ratio of FRCs with different boundary constraints is discussed.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"12 1","pages":"1009 - 1019"},"PeriodicalIF":4.4,"publicationDate":"2022-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48941757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Printability and pore structure of 3D printing low carbon concrete using recycled clay brick powder with various particle features","authors":"Chao Zhang, Zijian Jia, Zhe Luo, Zhicong Deng, Zhibin Wang, Chun Chen, Yamei Zhang","doi":"10.1080/21650373.2022.2149633","DOIUrl":"https://doi.org/10.1080/21650373.2022.2149633","url":null,"abstract":"This paper investigates the utilization of recycled brick powder (BP) as supplementary cementitious material to prepare low carbon 3D printing concrete (3DPC). The effect of grinding time on the characteristics of BP was first analyzed, then the effect of BP on the rheology, printability, mechanical properties, and pore structure of 3DPC was studied. Since the porous microstructure of BP particles is destroyed during grinding process, as the grinding time increases, the average particle size and BET specific surface area of BP decrease synchronously. The BP with larger average particle size and specific surface area worsens printing quality and brings to wider interface zone and higher porosity of 3DPC. However, the BP with small average particle size (27.4 μm in this research) hardly affects the rheology and printability of 3DPC, and only slightly decreases the mechanical properties. This research can provide guidance for applying recycled BP to prepare low carbon 3DPC.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"12 1","pages":"808 - 817"},"PeriodicalIF":4.4,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41959065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One-phase improvement of sandy soil using seawater-based soybean-induced carbonate precipitation","authors":"Xiaoniu Yu, Xiaohua Pan","doi":"10.1080/21650373.2022.2142985","DOIUrl":"https://doi.org/10.1080/21650373.2022.2142985","url":null,"abstract":"Seawater-based soybean-induced carbonate precipitation (SSICP) was proposed for sandy soil improvement. A series of comparative bio-cementation tests on Ottawa sand and sea sand through SSICP and deionized water-based soybean-induced carbonate precipitation (SICP) were carried out. Experimental results indicate that seawater can be used to extract soybean urease. It has a certain negative effect on urease activity, but SSICP method has better sand improvement performance. When the soybean powder concentration is 100 g/L and soaking time is 60 min, related urease activity exceeds 2.50 U. It increases as the soaking time increases before 60 min, and then decreases. Generally, urease activity of deionized water-extracted soybean urease is higher than that extracted by seawater. The compressive strength of SSICP bio-cemented Ottawa sand blocks reaches 401.67 kPa, which is about twice of that bio-cemented by SICP (191.62 kPa). The better sand improvement mechanism of the SSICP method can be attributed to the mixture of calcium carbonate and calcite magnesium produced by the SSICP process is beneficial to improve sand strength compared to calcite only produced by the SICP process. The performance of carbonate precipitation and bio-cementation on Ottawa sand is better than those on sea sand, resulting in lower compressive strength and carbonate content of sea sand blocks.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"12 1","pages":"962 - 971"},"PeriodicalIF":4.4,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44023575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding the mechanisms behind the effects of limestone powder on microstructure evolution of cement paste","authors":"Kaidong Han, X. Shu, Q. Ran, Jinyan Shi, Zedi Zhang","doi":"10.1080/21650373.2022.2144534","DOIUrl":"https://doi.org/10.1080/21650373.2022.2144534","url":null,"abstract":"Abstract In cement-based materials, the microstructure evolution is a key factor that determines the mechanical, rheological and transport properties. However, the principal mechanism of microstructure evolution becomes more complicated due to the incorporation of limestone powder. In this paper, the effects of limestone powder are divided into filling effect, dilution effect, nucleation effect and its negative feedback effect. The hydration of paste is controlled by the nucleation and dilution effects, while the microstructure evolution of paste is determined by the nucleation, dilution and filling effects of limestone powder. Based on this, the HYMOSTRUC model was used to investigate the effect of content and specific surface area of limestone powder on microstructure evolution. In order to reveal the mechanism of microstructure evolution, a model of evolution of interparticle force is developed, in which the transition between the force of cementitious particles and the C–S–H cohesion is determined by cement hydration. By applying the model, the relationship between microstructure evolution and interparticle force was established, and the effect of limestone powder on microstructure evolution can be divided into five stages on the time scale depending on the action mechanism of interparticle forces.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"12 1","pages":"995 - 1008"},"PeriodicalIF":4.4,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45496189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multiscale numerical-analytical modelling of oxygen diffusivity in partially saturated concrete: Role of interfacial transition zone","authors":"Cheng Liu, Yue Qi, GA Chen, L. Yang, Jianming Gao, Yunsheng Zhang","doi":"10.1080/21650373.2022.2143452","DOIUrl":"https://doi.org/10.1080/21650373.2022.2143452","url":null,"abstract":"Abstract This study presents a multiscale model to simulate oxygen diffusivity in partially saturated concrete accounting for multiscale nature of concrete and water-gas distribution in its pore structure. At microscale, 3 D microstructure of cement paste ITZ is simulated, based on which the water-gas equilibrium distribution in capillary pore structure and oxygen diffusivity at different degrees of water saturation (DWSs) are mimicked using lattice Boltzmann models. Afterwards, a (n + 1)-phase model based on effective media theory is used to predict oxygen diffusivity in non-saturated concrete at mesoscale. Results indicate that the evolution of oxygen diffusivity with the increasing DWS follows an initial drop, a plateau, a slight decrease and a sharp decrease, which correspond to the decreasing gas-filled gel pores, depercolation of gas-filled gel pores, and decreasing gas-filled capillary pores until their depercolation. The role of ITZ in oxygen diffusion in non-saturated concrete becomes more remarkable with the increasing DWS.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"12 1","pages":"983 - 994"},"PeriodicalIF":4.4,"publicationDate":"2022-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45317390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Visible light antibacterial potential of graphene-TiO2 cementitious composites for self-sterilization surface","authors":"Abdul Halim Hamdany, Yuanzhao Ding, S. Qian","doi":"10.1080/21650373.2022.2143451","DOIUrl":"https://doi.org/10.1080/21650373.2022.2143451","url":null,"abstract":"Graphene oxide-titanium dioxide (GO-TiO2) composite was synthesized with one step hydrothermal process. The structure and morphology were characterized by field-emission-scanning-electron-microscopy, Thermogravimetric analysis, X-ray diffraction, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Photocatalytic activity against Escherichia coli inactivation was carried out by GO-TiO2 mixed with cement composite under visible light. The result revealed no significant difference between morphology of GO-TiO2 and pristine TiO2. FESEM and FTIR results showed the presence of carbon component in the GO-TiO2 composites. TGA-IR confirmed that the GO content (3%) in the composite could be controlled during the synthesis process. The synthesized GO-TiO2 had stronger visible light absorption and narrower bandgap (3.11 eV) than TiO2 (3.21 eV). The bandgap reduction was also observed in cement sample with GO-TiO2 (3.08 eV) which could be beneficial for reducing the energy needed for photoexcitation. As a result, the specimen with GO-P25 outperformed specimens with others for Escherichia coli inactivation.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"12 1","pages":"972 - 982"},"PeriodicalIF":4.4,"publicationDate":"2022-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48978087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Utilization of high-volume phosphogypsum in artificial aggregate by compaction granulation: effects of muck on physical properties, strength and leaching stability","authors":"Wei Chen, Z.A. Luo, Tao Sun, Peikai Tang, Dianshi Jin","doi":"10.1080/21650373.2022.2141368","DOIUrl":"https://doi.org/10.1080/21650373.2022.2141368","url":null,"abstract":"Artificial aggregate is an effective method to recycle for waste phosphogypsum (PG) in large quantity. This article proposes PG-muck artificial aggregates (PMAs) that combine PG and muck using compaction granulation to achieve high-volume utilization of PG. Varied PG and muck contents are applied to prepare PMAs, and the density, water absorption, strength, leaching stability, microstructure, and porosity of PMAs are tested. It is found that addition of muck can improve the PMA properties significantly, especially the leaching stability. Muck showed excellent immobilization capacity on contaminates in PMAs. Effects of muck addition are discussed comprehensively, and an optimized recipe for preparing PMAs is recommended.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"12 1","pages":"951 - 961"},"PeriodicalIF":4.4,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42611312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High temperature resistant restoration mortar with fly ash and GGBFS","authors":"Rüya Kılıç Demircan, G. Kaplan, Damla Nur Çelik","doi":"10.1080/21650373.2021.1992682","DOIUrl":"https://doi.org/10.1080/21650373.2021.1992682","url":null,"abstract":"Nowadays, the development of sustainable building materials is of loom large in for the preserve resources and reducing CO2 emission and environmental pollution effects. Exposure to fire or other high temperatures of mortars produced with calcium-based binders (cement or hydraulic lime) adversely affects their mechanical properties. In addition, the effect of high temperature may cause a change in the pore structures, causing cracking and spalling. Protecting the integrity of historical buildings exposed to high temperatures is important for cultural sustainability. In this study, natural hydraulic lime (NHL) used as a binder in mortars was replaced with 15, 30 and 60% fly ash (FA) and granulated blast furnace slag (GBFS). In the mixtures, 1.5% (by volume) polypropylene fiber (PF) was also used. Test results reveal that while the mortars’ workability increased as the FA and GBFS content increased, PF decreased the flow diameters of the mortars. It has been determined that the paste content affects the porosity and water absorption rates of mortars. With the addition of FA content, paste content increased and porosity reduced. Compressive strength over 10 MPa was obtained by using 30% FA in 90-day lime mortars. As the addition of GBFS, the compressive and flexural strength were negatively affected. PF has reduced the porosity and water penetration depth of the mortars thanks to its micro filler effect. FA-based mixtures were more resistant to high temperatures than GBFS-based mixtures. Compressive strength was measured between 4.3 and 8.6 MPa after 600 °C temperature in FA-based mixtures. In fibrous mixtures, increment of mass loss was more with high temperature. C-S-H gels were observed in XRD and SEM analyzes of mortars exposed to high temperatures. PF was observed in stereomicroscope images of mixtures exposed to 200 °C. Since the porosity of the mortars is relatively high (19.7%–30.8%), the PF in the mixtures exposed to 200 °C did not melt completely but was damaged. As a result, it would be more appropriate to use 30% of FA and 15% of GBFS in NHL mortars.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"11 1","pages":"418 - 438"},"PeriodicalIF":4.4,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43232667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}