International Journal of Concrete Structures and Materials最新文献_第4页

Experimental and Numerical Evaluation for Hybrid Reinforced T-Beam with Different Ratios of Recycled Rubberized Concrete 不同比例再生橡胶混凝土混合加固 T 型梁的实验和数值评估

IF 3.4 3区工程技术

International Journal of Concrete Structures and Materials Pub Date : 2024-05-21 DOI: 10.1186/s40069-024-00670-3

Tarik S. Elsalakawy, Amr A. Gamal, Mohamed Essam Sayed

引用次数: 0

Hybrid Environmentally Friendly Method for RCA Concrete Quality Improvement 改善 RCA 混凝土质量的混合环保型方法

IF 3.4 3区工程技术

International Journal of Concrete Structures and Materials Pub Date : 2024-05-17 DOI: 10.1186/s40069-024-00664-1

Alieh Mardani, Ngoc Kien Bui, Takafumi Noguchi

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Effect of Nano-TiO2 and Polypropylene Fiber on Mechanical Properties and Durability of Recycled Aggregate Concrete 纳米二氧化钛和聚丙烯纤维对再生骨料混凝土力学性能和耐久性的影响

IF 3.4 3区工程技术

International Journal of Concrete Structures and Materials Pub Date : 2024-05-14 DOI: 10.1186/s40069-023-00656-7

Xiong Wei, Wang Xiaoqing, Li Chunmei

{"title":"Effect of Nano-TiO2 and Polypropylene Fiber on Mechanical Properties and Durability of Recycled Aggregate Concrete","authors":"Xiong Wei, Wang Xiaoqing, Li Chunmei","doi":"10.1186/s40069-023-00656-7","DOIUrl":"https://doi.org/10.1186/s40069-023-00656-7","url":null,"abstract":"In order to promote the engineering application of recycled concrete, the effects of PPF and nano-TiO2 dioxide on the mechanical properties and durability of recycled concrete were studied.Polypropylene fiber recycled concrete(PRAC) and nano-TiO2 recycled concrete(TRAC) were prepared by adding different volume contents of PPF and nano-TiO2. The experimental findings demonstrated that the PPF and nano-TiO2 improved the splitting tensile strength of RAC better than the compressive strength. When the volume content of nano-TiO2. and PPF is 0.8% and 1.0%, respectively, the corresponding splitting tensile strength of concrete reaches the maximum value(3.4 and 3.7 MPa). The contribution rates of nano-TiO2 and PPF with different volume contents to the mechanical properties of RAC have optimal values, which are 0.4 and 1.0%, respectively. The incorporation of nano-TiO2 and PPF can effectively inhibit the loss of RAC mass and the generation of pores under freeze–thaw conditions, and slow down the decrease of dynamic elastic modulus. When the volume content of PPF is 1.0% and the volume content of nano-TiO2 is 0.4%, the protection effect on the internal structure of RAC is better, and its carbon resistance is better. The results of RSM model analysis and prediction show that both PPF and nano-TiO2 can be used as admixture materials to improve the mechanical properties and durability of RAC, and the comprehensive improvement effect of PPF on RAC performance is better than that of nano-TiO2.","PeriodicalId":13832,"journal":{"name":"International Journal of Concrete Structures and Materials","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140934274","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}

引用次数: 0

Development of Sustainable Slag-based Geopolymer Concrete Using Different Types of Chemical Admixtures 使用不同类型的化学外加剂开发可持续的矿渣基土工聚合物混凝土

IF 3.4 3区工程技术

International Journal of Concrete Structures and Materials Pub Date : 2024-05-09 DOI: 10.1186/s40069-024-00672-1

Ismail Amer, Amr Abdelkhalik, Ola A. Mayhoub, Mohamed Kohail

{"title":"Development of Sustainable Slag-based Geopolymer Concrete Using Different Types of Chemical Admixtures","authors":"Ismail Amer, Amr Abdelkhalik, Ola A. Mayhoub, Mohamed Kohail","doi":"10.1186/s40069-024-00672-1","DOIUrl":"https://doi.org/10.1186/s40069-024-00672-1","url":null,"abstract":"Geopolymer concrete (GPC) has achieved a wide popularity since innovating it as an alternative to conventional concrete because of its superior mechanical characteristics and durability, in addition to being a green concrete due to its low negative impact on the environment. However, GPC still suffers from the problem of its poor workability which suppresses its spread in construction applications. This study investigated the most effective parameters on the workability of GPC including GGBFS content, water to binder ratio, and dosage of different types of chemical admixtures, Naphthalene-Based Admixture (NPA) and Polycarboxylate-Based Admixture (PCA), using Taguchi approach and Analysis of Variance (ANOVA) analysis considering the compressive strength at the different concrete ages. It was observed that NPA, in the geopolymer concrete, improved the compressive strength compared to PCA. The NPA-based mixes achieved the highest 28-day compressive strength, 69 MPa, with about 27.8% more than the highest 28-day compressive strength achieved by the PCA-based mixes, 54 MPa. The obtained results revealed that the NPA has achieved the best improvement for both the workability, in terms of initial slump value and slump loss rate, and the compressive strength of GPC mixes compared to PCA.","PeriodicalId":13832,"journal":{"name":"International Journal of Concrete Structures and Materials","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140934352","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}

引用次数: 0

Numerical Simulation Study on the Seismic Performance of Prefabricated Fiber-Reinforced Concrete Beam–Column Joints With Grouted Sleeve Connections 带灌浆套筒连接的预制纤维加固混凝土梁柱连接的抗震性能数值模拟研究

IF 3.4 3区工程技术

International Journal of Concrete Structures and Materials Pub Date : 2024-05-06 DOI: 10.1186/s40069-024-00671-2

Mei-Ling Zhuang, Jinsheng Cheng, Dongsong Fei, Chuanzhi Sun, Zhenbo Wang, Baodong Chen, Yan Qiao

{"title":"Numerical Simulation Study on the Seismic Performance of Prefabricated Fiber-Reinforced Concrete Beam–Column Joints With Grouted Sleeve Connections","authors":"Mei-Ling Zhuang, Jinsheng Cheng, Dongsong Fei, Chuanzhi Sun, Zhenbo Wang, Baodong Chen, Yan Qiao","doi":"10.1186/s40069-024-00671-2","DOIUrl":"https://doi.org/10.1186/s40069-024-00671-2","url":null,"abstract":"Based on the available experimental data, fiber models for four prefabricated fiber-reinforced concrete beam–column joint specimens with grouted sleeve connections are first developed in OpenSees software. Then, the simulated seismic performance of the specimens is compared with the experimental results. Finally, the effects of axial load ratio and shear-to-span ratio on the seismic performance of the specimens are further investigated numerically. The results indicate that Concrete02 material model and Reinforcing Steel material model can accurately simulate the constitutive relationship of concrete and reinforcing steel, respectively; the beam–column joint elements can accurately simulate different damage behaviors of the joint zone. Fiber-reinforced concrete can significantly improve the seismic performance of the specimens. The relative errors of the simulated seismic performance indexes are about 15%. It is recommended that the optimum value of shear-to-span ratio for prefabricated FRC BCJs is 2.0–2.5. The effect of axial load ratio on the seismic behavior of PBCJs-CM is very small, and can be negligible in the case that the prefabricated FRC BCJs has a moderate value of shear-to-span ratio. The fiber model developed in this article can provide a numerical simulation basis for subsequent studies of prefabricated fiber-reinforced concrete beam–column joint specimens with grouted sleeve connections.","PeriodicalId":13832,"journal":{"name":"International Journal of Concrete Structures and Materials","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140889082","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}

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Optimization and Characterization of Cementitious Composites Combining Maximum Amounts of Waste Glass Powder and Treated Glass Aggregates 废玻璃粉和处理过的玻璃骨料最大用量水泥基复合材料的优化与表征

IF 3.4 3区工程技术

International Journal of Concrete Structures and Materials Pub Date : 2024-05-01 DOI: 10.1186/s40069-024-00669-w

Sarra Mezaouri, Zine El-Abidine Kameche, Hocine Siad, Mohamed Lachemi, Mustafa Sahmaran, Youcef Houmadi

{"title":"Optimization and Characterization of Cementitious Composites Combining Maximum Amounts of Waste Glass Powder and Treated Glass Aggregates","authors":"Sarra Mezaouri, Zine El-Abidine Kameche, Hocine Siad, Mohamed Lachemi, Mustafa Sahmaran, Youcef Houmadi","doi":"10.1186/s40069-024-00669-w","DOIUrl":"https://doi.org/10.1186/s40069-024-00669-w","url":null,"abstract":"This work investigates the combined use of waste glass aggregates (GA) and glass powder (GP) in cementitious mortars. For this reason, the optimized incorporation of GA by natural aggregates (NA) replacements was first studied after applying a surface roughening method with hydrofluoric acid. The compressive strength results were utilized to select the best mixture with GA. Then, different GP contents were added by cements substitutions to the optimized GA-based mortar. A control mortar without GA and GP amounts was also casted as a reference for comparison. The detailed mechanical, physical and durability properties of the resulted mixtures with combined GA and GP were assessed by considering the compressive and flexural strengths, ultra-sonic pulse velocity, alkali-silica reaction (ASR), rapid chloride permeability test (RCPT), magnesium sulphate attack and sulfuric acid resistance. The microstructure of different optimized (GA + GP)-combinations was characterized by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS)in order to analyse the interfacial transition zone (ITZ) between glass materials and the surrounding matrix. The results showed that the optimized composition with 75% GA and 25% GP was shown with high compacity and durability characteristics due to the increased GA/matrix ITZ and the formation of C–(N,K)–S–H products with C–S–H.","PeriodicalId":13832,"journal":{"name":"International Journal of Concrete Structures and Materials","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140833640","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}

引用次数: 0

The Effect of Partial Replacement of Cement with Diatomaceous Earth (DE) and Polypropylene Fibers (PPF) on Fresh, Hardened, and Durability Properties of Concrete 用硅藻土（DE）和聚丙烯纤维（PPF）部分替代水泥对混凝土新拌、硬化和耐久性能的影响

IF 3.4 3区工程技术

International Journal of Concrete Structures and Materials Pub Date : 2024-04-24 DOI: 10.1186/s40069-024-00666-z

Alexander Gladwin Alex, Prakash Arul Jose, Maria Rajesh Antony, Krishnan Dhanalakshmi

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Progressive Collapse of Typical and Atypical Reinforced Concrete Framed Buildings 典型和非典型钢筋混凝土框架结构建筑的渐进式坍塌

IF 3.4 3区工程技术

International Journal of Concrete Structures and Materials Pub Date : 2024-04-20 DOI: 10.1186/s40069-024-00665-0

Solomon Abebe Derseh, Tesfaye Alemu Mohammed, Girum Urgessa

{"title":"Progressive Collapse of Typical and Atypical Reinforced Concrete Framed Buildings","authors":"Solomon Abebe Derseh, Tesfaye Alemu Mohammed, Girum Urgessa","doi":"10.1186/s40069-024-00665-0","DOIUrl":"https://doi.org/10.1186/s40069-024-00665-0","url":null,"abstract":"This paper investigates the progressive collapse potential of eight-story reinforced concrete framed buildings with several atypical structural configurations and compares results with a typical structural configuration. The alternative load path mechanism, the linear-static analysis procedure amplified by dynamic increase factors, and the demand capacity ratio criterion limits from the U.S. General Services Administration guideline were used to evaluate the vulnerability of the different atypical and typical framed structures. Variations in bay size, plan irregularity, and closely spaced columns were used to represent the atypical structural configurations. The extracted demand-capacity ratio (DCR) of the global structural response showed that the demand-capacity ratio for the longitudinal frame with short-span beams had a larger DCR than the transverse frame with longer beam spans with significant potential for progressive collapse. Furthermore, atypical building configurations with closely spaced columns failed by shear and showed the highest DCR limits. In addition to the global structural response, the local member end actions were also evaluated. The evaluation showed that the critical atypical frame configuration with closely spaced columns had a 91% and 127% maximum shear force and support bending moment value difference, respectively, when compared to a baseline typical frame configuration.","PeriodicalId":13832,"journal":{"name":"International Journal of Concrete Structures and Materials","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507895","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}

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Investigation on the Micro-Grinding Induced Crystallographic Variations of Nine Different Clinkers 九种不同熟料的微胶结引起的晶体变化研究

IF 3.4 3区工程技术

International Journal of Concrete Structures and Materials Pub Date : 2024-04-17 DOI: 10.1186/s40069-024-00660-5

Hyunuk Kang, Jihoon Lee, Jun-Boum Park, Juhyuk Moon

{"title":"Investigation on the Micro-Grinding Induced Crystallographic Variations of Nine Different Clinkers","authors":"Hyunuk Kang, Jihoon Lee, Jun-Boum Park, Juhyuk Moon","doi":"10.1186/s40069-024-00660-5","DOIUrl":"https://doi.org/10.1186/s40069-024-00660-5","url":null,"abstract":"Although clinker has been used for many years, complicated mineralogical properties of clinker pose challenges for the precise quantification. In this study, the mineralogical and crystallographic properties of nine different clinkers according to grinding procedures were investigated. With the dry-grinding for 2 h, particle size reduction to 3 μm of median particle size with a substantial phase transition to an amorphous phase observed, to which alite (C3S) mainly contributed to the transition. Meanwhile, the crystallographic properties of the clinker phases were barely changed during the wet-grinding. In the wet-grinding program, the amount of ferrite solid solution (C4AF) with a high linear absorption coefficient was not underestimated. Furthermore, well-corrected preferred orientation effect on C3S was positively contributed to the analysis result of clinkers with the wet-grinding. Hence, it was suggested that the crystallographic effects observed in the wet-grinding program could produce more reliable results in phase analysis for the clinkers.","PeriodicalId":13832,"journal":{"name":"International Journal of Concrete Structures and Materials","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140612967","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}

引用次数: 0

Enhancing Structural Resilience: Microbial-Based Self-Healing in High-Strength Concrete 增强结构韧性：基于微生物的高强度混凝土自愈合技术

IF 3.4 3区工程技术

International Journal of Concrete Structures and Materials Pub Date : 2024-04-12 DOI: 10.1186/s40069-024-00661-4

Tesfaye Alemu Mohammed, Yonathan Muche Kasie, Eleyas Assefa, Yiglet Mebrat Getu, Dereje Hailu Tufa

{"title":"Enhancing Structural Resilience: Microbial-Based Self-Healing in High-Strength Concrete","authors":"Tesfaye Alemu Mohammed, Yonathan Muche Kasie, Eleyas Assefa, Yiglet Mebrat Getu, Dereje Hailu Tufa","doi":"10.1186/s40069-024-00661-4","DOIUrl":"https://doi.org/10.1186/s40069-024-00661-4","url":null,"abstract":"Concrete’s weak tensile strength renders it susceptible to cracking under prolonged loads, leading to reduced load-bearing capacity and reinforcing bar corrosion. This study investigates the effectiveness of microbial-based self-healing in high-strength concrete, focusing on two bacterial strains: Sporosarcina koreensis and Bacillus. Results demonstrate significant enhancements in micro- and macro-physical properties of high-strength bacterial concrete with Bacillus flexus and S. koreensis, surpassing the control. Bacillus flexus-infused concrete exhibits a remarkable 21.8% increase in compressive strength at 7 days and 11.7% at 56 days. Similarly, S. koreensis-treated concrete shows 12.2% and 7.4% increases at 7 and 56 days, respectively. Enhanced crack healing occurs due to calcite precipitation, confirmed by X-ray diffraction and scanning electron microscopy. Both bacterial strains achieve crack closure within 42 days, with widths of 259.7 µm and 288.7 µm, respectively. Moreover, bacterial concrete from these strains excels in durability against water, acid, and salt exposure, surpassing control concrete. These findings emphasize microbial-based self-healing’s potential in high-strength concrete, providing a practical strategy to enhance structural resilience and extend concrete infrastructure lifespan.","PeriodicalId":13832,"journal":{"name":"International Journal of Concrete Structures and Materials","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140574465","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}

引用次数: 0