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

Analysis of Aqueducts Subjected to Hydrostatic and Dynamic Loads Using 3D - Solid Modeling 基于三维实体模型的渡槽静、动荷载分析

Journal of Building Materials and Structures Pub Date : 2020-09-09 DOI: 10.5281/ZENODO.4020179

J. Yadav, S. S. Babu

引用次数: 0

Conception of eco-friendly cement based on natural pozzolan to improve rheological behavior of concrete 基于天然火山灰的环保水泥的概念，以改善混凝土的流变性能

Journal of Building Materials and Structures Pub Date : 2020-09-01 DOI: 10.5281/ZENODO.4009773

S. Mansour, Y. Ghernouti

{"title":"Conception of eco-friendly cement based on natural pozzolan to improve rheological behavior of concrete","authors":"S. Mansour, Y. Ghernouti","doi":"10.5281/ZENODO.4009773","DOIUrl":"https://doi.org/10.5281/ZENODO.4009773","url":null,"abstract":"The pozzolan of Beni- Saf region (North-West Algeria) is a natural material of volcanic origin with an ability to react with lime in the presence of water and to form compounds with binding properties. Therefore, its use in the production of new cementitious materials will protect the environment. It will therefore be interesting to exploit this source as a partial cement substitution. In this work, a rheometric investigation was carried out to assess the performance of the natural pozzolan substituted to cement at variable rates ranging from 5%, 10%, 15% to 20% in order to obtain an ecological concrete. As the rheological behavior of concrete depends on the behavior of the cement paste, the effect of pozzolan on the latter was analyzed using static flow tests and dynamic creep and oscillation tests. The results of the rheometric tests have shown that in flow, the pozzolan improves the fluidity and in oscillation mode, it generates a viscous behavior of the cementitious pastes compared to elastic behavior of the control paste. Furthermore, the transient study (creep / recovery) made it possible to highlight the liquid viscoelastic character of the cement pastes. With 10% of pozzolan, the rheological behavior of the paste is viscous liquid which seems to be the best. The use of pozzolan as cement substitution has significant economic, environmental and technical advantages, namely the development of natural pozzolan, reduction of CO2 emissions during the manufacture of cement as well as energy reduction and finally improvement of the properties of fresh concrete.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41450773","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

Dynamic analysis of a multi-span simply supported prestressed concrete bridge with restrainers and seismic isolation devices 带约束隔震装置的多跨简支式预应力混凝土桥梁动力分析

Journal of Building Materials and Structures Pub Date : 2020-08-25 DOI: 10.34118/jbms.v7i1.709

M. Ouanani, K. Sandjak, B. Tiliouine

{"title":"Dynamic analysis of a multi-span simply supported prestressed concrete bridge with restrainers and seismic isolation devices","authors":"M. Ouanani, K. Sandjak, B. Tiliouine","doi":"10.34118/jbms.v7i1.709","DOIUrl":"https://doi.org/10.34118/jbms.v7i1.709","url":null,"abstract":"The Nonlinear F.E. code Structural Analysis Program (SAP) in which the primary nonlinear characteristics of bearings, impact elements and steel restrainer cables considered herein in order to investigate the dynamic analysis of a multi-span simply supported MSSS prestressed concrete bridge, equipped with steel restrainer cables and Lead Rubber Bearings LRB devices including Soil Structure Interaction (SSI) effects. A MSSS bridge with restrainer cables and lead rubber bearings at the two abutments and intermediate bents located in North Algeria is selected according to RPOA for seismic design category 1 is considered in this study. A detailed 3D nonlinear analytical model of study bridge subjected to three components identical seismic excitation including pounding elements, restrainer cables and bearing devices at expansion joints is developed. The nonlinear characteristics of theses boundary elements are represented by bilinear hysteretic models. Under strong seismic excitations, the large longitudinal displacements result the collision between bridge decks or even unseating of these decks at expansion joints of MSSS bridge. Finally, the study reveals among others that in order to prevent deck unseating resulting from restrainer failures and subsequent bridge collapse, particular attention should also be given to proper design of nonlinear characteristics of restrainers and bearing devices.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69805344","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

Properties of Sandcrete Block Produced with Coconut Husk as Partial Replacement of Sand 椰壳部分替代砂制砂混凝土砌块性能研究

Journal of Building Materials and Structures Pub Date : 2020-08-20 DOI: 10.5281/ZENODO.3993274

U. Robert, S. Etuk, O. Agbasi, S. Ekong

{"title":"Properties of Sandcrete Block Produced with Coconut Husk as Partial Replacement of Sand","authors":"U. Robert, S. Etuk, O. Agbasi, S. Ekong","doi":"10.5281/ZENODO.3993274","DOIUrl":"https://doi.org/10.5281/ZENODO.3993274","url":null,"abstract":"Sandcrete block is the most popular building material in construction industry. However, with the high and increasing cost of building materials experienced nowadays, it has been difficult to achieve affordable housing especially in developing countries. Also, significant dredging of sand for block production and the large amount of coconut husk thrown away as waste have increased the level of concern due to their adverse effect on environment. This work, therefore, sought to produce solid core sandcrete blocks in which sand component is partially replaced with coconut husk and investigate the suitability of using such blocks for building designs. The block samples produced using untreated and also treated coconut husks at various levels of sand replacement were subjected to bulk density, water absorption and compressive strength tests at 7 days and 28 days of curing. It was found that sand replacement with 20% of untreated coconut husk or 30% of treated coconut husk could yield a solid core sandcrete block suitable for non-load bearing walls of satisfactory performance. Since coconut husk is cheaply available, sustainable, and recyclable, utilising such promising material in this case can enhance production of cost-effective and optimally performing sandcrete blocks for building purposes. This will in turn help to boost the development of housing, minimise loss of agricultural lands, and reduce environmental pollution level, and so on.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43636665","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: 4

Effect of cement types on carbonation depth of concrete 水泥种类对混凝土碳化深度的影响

Journal of Building Materials and Structures Pub Date : 2020-08-01 DOI: 10.34118/jbms.v7i1.706

A. Merah, Youcef Korichi, Mohamed Mouldi Khenfer

{"title":"Effect of cement types on carbonation depth of concrete","authors":"A. Merah, Youcef Korichi, Mohamed Mouldi Khenfer","doi":"10.34118/jbms.v7i1.706","DOIUrl":"https://doi.org/10.34118/jbms.v7i1.706","url":null,"abstract":"Reinforced concrete as a building material is the most used in most civil engineering structures. This one is exposed to several attacks (physical, chemical and mechanical). Among these attacks, we can cite the phenomenon of carbonation, which leads to corrosion of the reinforcements and consequently reduces the service life of reinforced concrete structures. In addition, this phenomenon generates additional repair costs, which can sometimes exceed the initial cost of the building. Furthermore, it depends on the type and class of cement, two main classes of cement are used for the formulation of concrete in Algeria, ordinary Portland cements and cements with additions. \u0000 This paper enters in the option of sustainable development, in order to study the behavior of these two types of cements against accelerated carbonation. \u0000For this purpose, two concrete compositions (based on ordinary Portland cements and cements with additions) were formulated, from these two formulations, samples were made in order to subject them to accelerated carbonation in a chamber rich in CO2 according to the recommendations of the AFPC-AFREM. \u0000The results obtained clearly show that concretes based on ordinary Portland cements (OPC) are less sensitive to the phenomenon of carbonation compared to concretes based on blended cements. \u0000 ","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46919400","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: 1

Analysis of autoclaved aerated concrete (AAC) blocks with reference to its potential and sustainability 蒸压加气混凝土砌块的潜力和可持续性分析

Journal of Building Materials and Structures Pub Date : 2020-07-18 DOI: 10.34118/jbms.v7i1.707

Mohammad Arif Kamal

{"title":"Analysis of autoclaved aerated concrete (AAC) blocks with reference to its potential and sustainability","authors":"Mohammad Arif Kamal","doi":"10.34118/jbms.v7i1.707","DOIUrl":"https://doi.org/10.34118/jbms.v7i1.707","url":null,"abstract":"The traditional bricks are the main building materials that are used extensively in the construction and building industry. Autoclaved Aerated Concrete blocks are recently one of the newly adopted building materials. The Autoclaved aerated concrete (AAC) is a product of fly ash which is mixed with lime, cement, and water and an aerating agent. The AAC is mainly produced as cuboid blocks and prefabricated panels. The Autoclaved aerated concrete is a type of concrete that is manufactured to contain lots of closed air voids. The AAC blocks are energy efficient, durable, less dense, and lightweight. It is manufactured by adding a foaming additive to concrete in different sizes of molds as per requirement, then wire-cutting these blocks or panels from the resulting ‘cake lump’ and ‘heating them with steam. This process is called as Autoclaving. It has been observed that this material is an eco-friendly building material that is being manufactured from industrial waste and is composed of non-toxic ingredients. In this paper, an overview of AAC blocks with reference to its potential and sustainability as a novel building material has been presented. The paper also presents a comparative cost analysis of AAC Blocks with the Red clay bricks and its suitability and potential use in the construction in the building industry.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45505933","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: 8

Study of the mechanical behavior of a lightweight wood concrete 轻质木混凝土的力学性能研究

Journal of Building Materials and Structures Pub Date : 2020-07-17 DOI: 10.5281/ZENODO.3946859

M. Bouabdallah

{"title":"Study of the mechanical behavior of a lightweight wood concrete","authors":"M. Bouabdallah","doi":"10.5281/ZENODO.3946859","DOIUrl":"https://doi.org/10.5281/ZENODO.3946859","url":null,"abstract":"Today, the development of building materials based on toxic or non-toxic industrial waste is a topical issue for the productive structures in industrialized countries. In this article, non-toxic wood waste (wood chips) is used to improve the characteristics of ordinary concrete (lightness, thermal insulation, acoustic absorption, rigidity under stresses, etc.) for the purpose of eventually developing light wood concrete. The present experimental study aims at conducting a comparative behavioral analysis between concretes based on non-toxic wood waste of natural origin on the one hand, and ordinary concrete on the other.In order to achieve this goal, a series of test pieces were made, with five different formulations. Four of them are lightweight wood-concretes obtained by the substitution of a volume of aggregates; the fifth formulation is ordinary concrete. A number of tests were carried out at the Construction Technical Control Laboratory at different ages, i.e. 7, 14, 21 and 28 days. Interesting results were obtained with respect to the evolution of the mechanical characteristics of light wood-concrete at early age. Some of these features, such as the long-term compressive strength of concrete, are essential parameters in civil engineering.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48947841","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

Pathology Evaluation and Repair of Bridges in Masonry 砌体桥梁的病理学评价与修复

Journal of Building Materials and Structures Pub Date : 2020-04-19 DOI: 10.5281/ZENODO.3757082

S. Bekkouche, Ghania Boukhatem, D. Mendjel, S. Messast

引用次数: 0

Optimal seismic response using a Passive Tuned Mass Damper Inerter (TMDI) 使用被动调谐质量阻尼器惯性装置（TMDI）的最优地震响应

Journal of Building Materials and Structures Pub Date : 2020-04-10 DOI: 10.5281/ZENODO.3747767

Salah Djerouni, A. Ounis, B. Athamnia, Mouncef Eddine Charrouf, M. Abdeddaim, N. Djedoui

{"title":"Optimal seismic response using a Passive Tuned Mass Damper Inerter (TMDI)","authors":"Salah Djerouni, A. Ounis, B. Athamnia, Mouncef Eddine Charrouf, M. Abdeddaim, N. Djedoui","doi":"10.5281/ZENODO.3747767","DOIUrl":"https://doi.org/10.5281/ZENODO.3747767","url":null,"abstract":"The latest earthquakes history shows that resistant conception, safe and economical structures are a daily challenge for structural engineers. Among the newest vibration control devices figures the inerter which is a device which can develop a large fictive mass (it consists of a mass amplification effect) using rotational inertia. In this research work, the effectiveness of a traditional passive tuned mass damper (TMD) is compared with a tuned mass damper inerter (TMDI) which consists generally of tuned mass damper coupled with an Inerter. Both devices are used to control a base-isolated structure vibration submitted to several seismic records. In This study, a base-isolated structure of six stories (6 DOF) was equipped with (TMD) and (TMDI) and a time history analysis were performed under different earthquake records (El Centro, Kobe, Kocaeli). The mathematical model of the building is established in MATLAB Simulink. The simulation results illustrated he robustness, performance and effectiveness of the structure equipped with a (TMDI). The dynamical parameters of interest were base and top displacement as well as the base shear force and peak inerter force produced.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48704342","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: 2

Stabilization of compressed earth block clayey materials from Adrar (Algeria) by lime and crushed sand 石灰和碎砂稳定阿尔及利亚Adrar的压缩土块粘土材料

Journal of Building Materials and Structures Pub Date : 2020-04-09 DOI: 10.5281/ZENODO.3744137

M. Abbou, A. Semcha, Fatiha Kazi-Aoual

引用次数: 2