Materiales de Construcción最新文献

Studying the hydration kinetics and mechanical-microstructural properties of Portland cements made with and without dredged sediment: experimental and numerical approaches 研究使用和不使用疏浚泥沙制作的硅酸盐水泥的水化动力学和机械微观结构特性：实验和数值方法

Materiales de Construcción Pub Date : 2024-06-11 DOI: 10.3989/mc.2024.363223

D. C. Chu, M. Benzerzour, M. Amar, J. Kleib, N-E. Abriak, G. Potier, J. Nadah

{"title":"Studying the hydration kinetics and mechanical-microstructural properties of Portland cements made with and without dredged sediment: experimental and numerical approaches","authors":"D. C. Chu, M. Benzerzour, M. Amar, J. Kleib, N-E. Abriak, G. Potier, J. Nadah","doi":"10.3989/mc.2024.363223","DOIUrl":"https://doi.org/10.3989/mc.2024.363223","url":null,"abstract":"This research focused on two objectives: (i) investigating the impacts of sediment substitution in the raw meal on the hydration and mechanical-microstructural properties of cement; (ii) assessing the reliability of CEMHYD3D code for modeling the properties of hydrated cement. The experimental results indicated that a maximum rate of sediment up to 7.55% had no impact on the formation of mineralogical phases of clinker, the hydration and mechanical-microstructural development of cement. The degree of hydration and strengths of cement made of sediment substitution were slightly higher than those of reference cement, whereas the critical diameter of pores of both hydrated cements was nearly identical. Comparing the modeling results with the experimental measurements showed good predictions for the degree of hydration, hydration heat as well as strength development. However, the formation of hemi-and mono-carboaluminate phases was not predicted in the model, and the porosity prediction was also limited to the capillary porosity.","PeriodicalId":372998,"journal":{"name":"Materiales de Construcción","volume":"4 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141359066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of an explicit crack bridging constitutive model for engineered cementitious composites using polyvinyl alcohol (PVA) or polyethylene (PE) fiber 为使用聚乙烯醇（PVA）或聚乙烯（PE）纤维的工程水泥基复合材料设计显式裂缝桥接构造模型

Materiales de Construcción Pub Date : 2024-06-11 DOI: 10.3989/mc.2024.367923

Z. Wang, B. Li, L. Li, Z. Zhang

{"title":"Design of an explicit crack bridging constitutive model for engineered cementitious composites using polyvinyl alcohol (PVA) or polyethylene (PE) fiber","authors":"Z. Wang, B. Li, L. Li, Z. Zhang","doi":"10.3989/mc.2024.367923","DOIUrl":"https://doi.org/10.3989/mc.2024.367923","url":null,"abstract":"This paper aims to establish an explicit crack bridging model that can link engineered cementitious composites (ECC) behavior from single fiber to single crack scale, which is great of designing ECC featuring pseudo tensile strain hardening and multiple cracks expanding by tailoring microstructure and materials selection. In this study, fiber bridging stress was divided into three parts including fiber bridging stress with no rupture, fiber debonding fracture stress, and fiber pullout fracture stress. Subsequently, the fundamental crack bridging model was emerged when fiber bridging stress with no rupture subtracted from the fiber rupture stress in debonding and pullout stage. Moreover, two-way pullout and Cook-Gordon effect were also considered to establish the complete model. It was found that the two-way pullout situation of polyvinyl alcohol (PVA) fiber has a significant influence on the crack opening width due to its slip hardening property, while the Cook-Gordon effect presents a faint crack width increment for PVA-ECC. However, the Cook-Gordon effect makes a significant contribution to the crack opening width of the composite produced by polyethylene (PE). This building intelligible model presents a better prediction for ECC through the comparison of experimental data or real average crack width in previous models, thus confirming the validity of this model.","PeriodicalId":372998,"journal":{"name":"Materiales de Construcción","volume":"26 19","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141357237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of recycled fine powder as a calcium source on fresh and hardened properties of geopolymer mortar 回收细粉作为钙源对土工聚合物砂浆新鲜和硬化性能的影响

Materiales de Construcción Pub Date : 2024-06-03 DOI: 10.3989/mc.2024.359923

A. Sharma, P. Singh, K. Kapoor

引用次数: 0

Influence of chemical pretreatment on the pozzolanicity of recycled glass microparticles used as a substitute for Portland cement 化学预处理对用作硅酸盐水泥替代品的再生玻璃微粒的水胶凝性的影响

Materiales de Construcción Pub Date : 2024-05-23 DOI: 10.3989/mc.2024.362723

J.V.F. Barros Correia, H. Campos dos Santos, Y.S. Bomfim Fraga, R.M.P.B. Oliveira

{"title":"Influence of chemical pretreatment on the pozzolanicity of recycled glass microparticles used as a substitute for Portland cement","authors":"J.V.F. Barros Correia, H. Campos dos Santos, Y.S. Bomfim Fraga, R.M.P.B. Oliveira","doi":"10.3989/mc.2024.362723","DOIUrl":"https://doi.org/10.3989/mc.2024.362723","url":null,"abstract":"This research investigated the influence of using chemically treated glass microparticles as a partial replacement for cement in Portland cement pastes and mortars. The microparticles were obtained by grinding glass waste into three different particle size fractions (< 75 µm, < 45 µm, and < 25 µm), treated with calcium hydroxide (CH), and characterized using SEM/EDS and a laser particle size analyzer. Samples prepared with the incorporation of glass were characterized using XRD, TGA/DTG, and SEM/EDS. The pretreatment with calcium hydroxide induced the formation of C-S-H with different morphologies on the surface of the particles, in addition to causing changes in particle size distribution due to the formation of agglomerates. The pastes prepared with treated particles had lower amounts of CH and higher levels of hydrated silicates. However, when indirectly measuring the pozzolanicity of treated particles through the compressive strength of mortars, no significant differences were observed in the strengths of mortars made with treated and untreated particles.","PeriodicalId":372998,"journal":{"name":"Materiales de Construcción","volume":"38 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141103760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Environmental benefits of microwave-assisted self-healing technology for pavements - A Life Cycle Assessment comparative study 微波辅助路面自修复技术的环境效益 - 生命周期评估比较研究

Materiales de Construcción Pub Date : 2024-05-23 DOI: 10.3989/mc.2024.367023

A. M. Rodríguez-Alloza, F. Gulisano, D. Garraín

引用次数: 0

The effects of synthetic wollastonite microfibers on PVA fiber-reinforced engineered geopolymer composites 合成硅灰石微纤维对 PVA 纤维增强工程土工聚合物复合材料的影响

Materiales de Construcción Pub Date : 2024-05-23 DOI: 10.3989/mc.2024.363423

H.Ö. Öz, XM. Güneş

引用次数: 0

Shear behavior of hollow clay brick masonry wallet coated with short jute fiber reinforced mortar 涂有短黄麻纤维增强砂浆的空心粘土砖砌体钱包的剪切行为

Materiales de Construcción Pub Date : 2024-05-23 DOI: 10.3989/mc.2024.374624

L.N. Farias, P.R.L. Lima, R.D. Toledo Filho

引用次数: 0

Transport properties of fly ash-slag-based geopolymer concrete with 2M sodium hydroxide combined with variations in slag percentage, Al/Bi ratio, and SS/SH ratio 粉煤灰-矿渣土工聚合物混凝土在 2M 氢氧化钠与矿渣比例、Al/Bi 比和 SS/SH 比变化结合后的迁移特性

Materiales de Construcción Pub Date : 2024-05-23 DOI: 10.3989/mc.2024.359623

E. S. Sunarsih, S. As'ad, A.R. Mohd.Sam, S.A. Kristiawan

引用次数: 0

Durability effect of reclaimed asphalt aggregate on concrete road pavement 再生沥青集料对混凝土路面的耐久性影响

Materiales de Construcción Pub Date : 2024-03-25 DOI: 10.3989/mc.2024.356823

T. Uygunoğlu, İlker Bekir Topçu, Emriye Çinar Resuloğullari

{"title":"Durability effect of reclaimed asphalt aggregate on concrete road pavement","authors":"T. Uygunoğlu, İlker Bekir Topçu, Emriye Çinar Resuloğullari","doi":"10.3989/mc.2024.356823","DOIUrl":"https://doi.org/10.3989/mc.2024.356823","url":null,"abstract":"The use of recycled aggregates instead of natural aggregates used in concrete reduces environmental pollution and concrete costs. Recycled Asphalt Pavement (RAP) aggregate used as recycled aggregate has a lower water absorption than natural aggregate due to its bituminous structure, which reduces the water requirement of fresh concrete. In this study, it was aimed to determine the optimum use of RAP particles as aggregate in concrete for read pavements and to determine their durability properties. For this purpose, RAP was used instead of crushed stone aggregate used in concrete road construction. RAP was used by replaced aggregate 0%, 25%, 50% and 100% of the crushed stone aggregate used on the concrete road. The dose of the produced concrete was 350 kg/m3 and the water/cement ratio was kept constant as 0.45. The fresh workability and air content of concretes containing RAP were determined. Compressive strength, splitting tensile strength, electrical resistivity value, accelerated corrosion test of hardened concretes were subjected to corrosion resistance, water absorption and porosity percentage, acid resistance, ultrasonic pulse rate and Scanning Electron Microscope (SEM) and X-ray Diffractometer (XRD) analyzes were determined. In the experimental results, it has been observed that the use of RAP ratio of 25% and 50% remains within the limit values for concrete pavement. It is recommended to be used on reinforced concrete roads that will be exposed to adverse environmental conditions with its high corrosion resistance, thanks to its anti-corrosion feature.","PeriodicalId":372998,"journal":{"name":"Materiales de Construcción","volume":" 76","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140384905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural aspects of concrete incorporating recycled coarse aggregates from construction and demolished waste 从建筑和拆除废物中回收粗骨料的混凝土结构问题

Materiales de Construcción Pub Date : 2024-03-25 DOI: 10.3989/mc.2024.360023

H. Panghal, A. Kumar

引用次数: 0