Innovative Infrastructure Solutions最新文献_第4页

Long-term properties and microstructural characterization of natural clinoptilolite zeolite-based cementitious materials 天然斜沸石基胶凝材料的长期性能和微观结构表征

Innovative Infrastructure Solutions Pub Date : 2023-11-14 DOI: 10.1007/s41062-023-01278-4

M. Shariful Islam, Benjamin J. Mohr

引用次数: 0

Optimal design and characteristics of sustainable eco-friendly ultra-high-performance concrete 可持续环保超高性能混凝土的优化设计和特性

Innovative Infrastructure Solutions Pub Date : 2023-11-14 DOI: 10.1007/s41062-023-01277-5

Asmaa A. Mashaly, Mohamed G. Mahdy, Walid E. Elemam

{"title":"Optimal design and characteristics of sustainable eco-friendly ultra-high-performance concrete","authors":"Asmaa A. Mashaly, Mohamed G. Mahdy, Walid E. Elemam","doi":"10.1007/s41062-023-01277-5","DOIUrl":"https://doi.org/10.1007/s41062-023-01277-5","url":null,"abstract":"Abstract Sustainable eco-friendly ultra-high-performance concrete (UHPC) is a remarkable innovation in construction technology. This research aims to develop sustainable UHPC by incorporating various supplementary materials, including silica fume (SF), glass powder (G L P), fly ash (FA), limestone powder (LP), and granite powder (G r P), as partial replacements for cement and fine aggregate. To achieve this goal, a total of twenty-seven concrete mixtures were designed using response surface methodology (RSM) and tested in order to determine the optimal combination of these supplementary materials for enhancing the mechanical properties of UHPC. Mathematical models were constructed using analysis of variance (ANOVA) test. The results of the study suggest that it is indeed possible to produce sustainable UHPC with reduced CO 2 emissions and improved mechanical properties by utilizing the suggested supplementary materials. In particular, the compressive and flexural strengths of the concrete significantly improved when high proportions of LP, SF and G L P, and low proportions of FA and G r P were used. Among the various mixtures tested, the mixture containing 12.5% SF, 15% FA, and 10% G L P as partial replacements of cement, along with 12.5% G r P and 50% LP as partial replacements of fine aggregate, exhibited the highest compressive and flexural strength at all curing ages, the compressive strength was 133, 175.8, 180.2 MPa at age 7, 28 and 90 days, respectively, meanwhile the flexural strength was 38.5 MPa at age 28 days. The SEM results revealed that the higher proportion of LP, FA, and G L P contributed to an enhanced concrete microstructure, further validating the positive impact of these supplementary materials on UHPC's mechanical properties.","PeriodicalId":13525,"journal":{"name":"Innovative Infrastructure Solutions","volume":"58 45","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134901386","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

Influence of basalt stirrups and bars on the performance of shear in beams 玄武岩箍筋对梁抗剪性能的影响

Innovative Infrastructure Solutions Pub Date : 2023-11-13 DOI: 10.1007/s41062-023-01290-8

Hamza Mobideen, Nasim Shatarat, Hasan Katkhuda, Yasser Al-Hunaiti, Ahmad A. Al-Qaisia

引用次数: 0

Improving criteria for two-story confined masonry building retrofitted by shear wall 剪力墙改造两层砌体约束建筑标准的改进

Innovative Infrastructure Solutions Pub Date : 2023-11-11 DOI: 10.1007/s41062-023-01287-3

Parisa Sartaji, Abdoreza Sarvghad Moghadam

引用次数: 0

Structural behavior of severely corroded RC beams retrofitted with UHPC layer: an experimental study UHPC层加固严重腐蚀钢筋混凝土梁的结构性能试验研究

Innovative Infrastructure Solutions Pub Date : 2023-11-11 DOI: 10.1007/s41062-023-01295-3

Rajib Kumar Biswas, Takahiro Saito, Takashi Misawa, Mitsuyasu Iwanami

引用次数: 0

Enhancing corrosion resistance in reinforced concrete structures by using innovative eco-friendly composite pigments 通过使用创新的环保复合颜料增强钢筋混凝土结构的耐腐蚀性

Innovative Infrastructure Solutions Pub Date : 2023-11-10 DOI: 10.1007/s41062-023-01279-3

Walaa M. Abd El-Gawad, Essam A. Mossalam, Mahmoud Gharieb

{"title":"Enhancing corrosion resistance in reinforced concrete structures by using innovative eco-friendly composite pigments","authors":"Walaa M. Abd El-Gawad, Essam A. Mossalam, Mahmoud Gharieb","doi":"10.1007/s41062-023-01279-3","DOIUrl":"https://doi.org/10.1007/s41062-023-01279-3","url":null,"abstract":"Abstract This is the first study to look into the use of modified feldspars as anticorrosive pigments in the coatings industry. Herein, novel anticorrosive composite pigments were prepared by the chemical deposition of thin films of different oxides (e.g., zinc oxide and vanadium oxide with doloresite phase) on the surface of feldspar, which comprises 80% of the whole structure. A new vanadium oxide (e.g., doloresite) was chosen due to its IV oxidation state and excellent anticorrosive characteristics. ZnO is also well-known for its high resistance to corrosion. Firstly, the synthesis of the composite pigments was done, and then, they were characterized via XRD, SEM/EDX, XRF, and TGA. The composite pigments were incorporated into solvent-based epoxy coatings to evaluate their anticorrosive performance on reinforced concrete steel. Their corrosion resistances were determined using linear polarization resistivity and electrochemical impedance spectroscopy techniques. The physico-mechanical properties of the dry coats containing the prepared composite pigments were also evaluated. The results revealed that the polarization resistivity ( R po ) of coatings containing Zn/F ranged from 5900 to 3900 Ohm.cm 2 and that of V / F ranged from 7077 to 5500 Ohm.cm 2 , while the resistivity of uncoated rebar was from 1900 to 1300 Ohm.cm 2 . These results confirm that these novel pigments (e.g., ZnO/feldspar and doloresite/feldspar) could provide high corrosion resistivity for concrete structures that are immersed in chloride-laden environments. These composite pigments will be eco-friendly with a low impact on humans and the environment as they contain very low concentrations of heavy metals, besides their high efficiency and economic feasibility.","PeriodicalId":13525,"journal":{"name":"Innovative Infrastructure Solutions","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135092530","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

Retraction Note: Investigation of bond-slip in reinforced steel rebar using concrete damage-plastic model 用混凝土损伤-塑性模型研究钢筋粘结滑移

Innovative Infrastructure Solutions Pub Date : 2023-11-10 DOI: 10.1007/s41062-023-01299-z

Ehsan Araghizadeh, Ramin Tabatabaei Mirhosseini, Soroush Rashidi, Mohsen Malaki Nejad

引用次数: 0

Ultimate capacity of granular pile anchors 颗粒桩锚杆的极限承载力

Innovative Infrastructure Solutions Pub Date : 2023-11-09 DOI: 10.1007/s41062-023-01259-7

Eswara Reddy Orekanti, Vidyaranya Bandi, M. R. Madhav

引用次数: 0

Electro-cementation of calcareous sand using colloidal silica (CS) nanoparticles and alumina powder 用胶体二氧化硅纳米颗粒和氧化铝粉电胶结钙质砂

Innovative Infrastructure Solutions Pub Date : 2023-11-09 DOI: 10.1007/s41062-023-01276-6

Nermeen Fouad Ashour, Ashraf Kamal Hussein, Rami Mahmoud El Sherbeeny, Omar Osman Omar, Safwan Abbas Khedr

{"title":"Electro-cementation of calcareous sand using colloidal silica (CS) nanoparticles and alumina powder","authors":"Nermeen Fouad Ashour, Ashraf Kamal Hussein, Rami Mahmoud El Sherbeeny, Omar Osman Omar, Safwan Abbas Khedr","doi":"10.1007/s41062-023-01276-6","DOIUrl":"https://doi.org/10.1007/s41062-023-01276-6","url":null,"abstract":"Abstract The research investigates the effectiveness of a ground improvement technique that involves the electro-cementation of an onshore calcareous sand containing 95.3% calcium carbonate through a series of laboratory experiments. Colloidal silica (CS) nanoparticles and alumina powder were introduced as pozzolanic materials in the sand, and a direct current (DC) was passed through the sand-silica-alumina mix inside an electrokinetic (EK) cell. The method resulted in the electro-cementation of the calcareous sand through the formation of calcium silicate hydrates (C–S–Hs) and calcium aluminate hydrates (C–A–Hs) as products of the pozzolanic reactions between Ca(OH) 2 , SiO 2 and Al 2 O 3 after electrolysis occurred. Iron-rich cements were also formed by the degradation of anodes. These newly formed compounds changed the nature of the treated soil from a granular material into a rock. Results show that the compressive strength of the resulting rock formation is significantly improved. The treatment can be considered as an artificial lithification process through which the nature of the treated soil was changed from a granular material into a rock formation. The electro-cementation achieved by the treatment was further assessed by spectroscopic analyses including FE-SEM, EDX and XRD, which confirmed the formation of cementing agents within the structure of the treated sand. Potential applications of the technique include caissons, highway construction projects, dune fixation and erosion control, in addition to liquefaction mitigation due to electrolysis of pore water and plugging the pores with cementitious materials.","PeriodicalId":13525,"journal":{"name":"Innovative Infrastructure Solutions","volume":" 30","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135243406","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

From waste to resource: utilizing municipal solid waste incineration bottom ash and recycled rubber in pervious concrete pavement 从废物到资源:利用城市生活垃圾焚烧底灰和再生橡胶在透水混凝土路面

Innovative Infrastructure Solutions Pub Date : 2023-11-09 DOI: 10.1007/s41062-023-01289-1

Zeinab Nasser Eddine, Firas Barraj, Jamal Khatib, Adel Elkordi

引用次数: 0