Journal of Applied Engineering Sciences最新文献_第4页

Problems of as-Built Inventories of Commercial Service Facilities 商业服务设施的在建库存问题

IF 1.1

Journal of Applied Engineering Sciences Pub Date : 2023-04-01 DOI: 10.2478/jaes-2023-0010

Bernarda Gębka, A. Buda, K. Maciuk

引用次数: 0

The Building Certification System - A Tool of Sustainable Development of University Campuses 建筑认证制度——大学校园可持续发展的工具

IF 1.1

Journal of Applied Engineering Sciences Pub Date : 2023-04-01 DOI: 10.2478/jaes-2023-0014

Ioana-Francesca Prada Hanga-Fărcaş, C. Bungău, A. Scurt, Monica Cristea, M. Prada

{"title":"The Building Certification System - A Tool of Sustainable Development of University Campuses","authors":"Ioana-Francesca Prada Hanga-Fărcaş, C. Bungău, A. Scurt, Monica Cristea, M. Prada","doi":"10.2478/jaes-2023-0014","DOIUrl":"https://doi.org/10.2478/jaes-2023-0014","url":null,"abstract":"Abstract The study is part of humanity's current concerns of tempering climate change for sustainable development, in the context where the construction sector is responsible for a significant percentage of greenhouse gas emissions. In the present work, through a rigorous documentation, the authors synthesize several existing green and sustainable building certification systems. Extending the study from buildings to green neighbourhoods, to university campuses and even to green cities, models of their sustainable development are highlighted. The authors summarize the results of the various \"green\" ratings, initiating \"Top 10 Greenest Universities in the world\", demonstrating the interest of certification and classification. The paper presents the case study of the University of Oradea. From this perspective, participation in a rating of green campuses, as well as certification of buildings, are stimulating elements for approaching a sustainable development strategy. Thus, with the registration in the UI GreenMetric World University Rankings, the University of Oradea is set to rise in the ranking, which actually led to the improvement of the green criteria and implicitly to an orientation towards a sustainable development of the university campus. At the same time, the paper demonstrates that the energy certification of old buildings engaged in the \"wave of renovations\" is a tool for the sustainable development of university campuses.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"13 1","pages":"105 - 112"},"PeriodicalIF":1.1,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45337159","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

Experimental Characterization of the Mechanical Properties of Concrete Based on Glass-Powder 玻璃粉混凝土力学性能的试验表征

IF 1.1

Journal of Applied Engineering Sciences Pub Date : 2023-04-01 DOI: 10.2478/jaes-2023-0005

Y. Boucheneb, R. Mehaddene, H. Kemer

{"title":"Experimental Characterization of the Mechanical Properties of Concrete Based on Glass-Powder","authors":"Y. Boucheneb, R. Mehaddene, H. Kemer","doi":"10.2478/jaes-2023-0005","DOIUrl":"https://doi.org/10.2478/jaes-2023-0005","url":null,"abstract":"Abstract Annually, there is an enormous amount of glass waste created worldwide, yet only a small portion of that material is recycled. Recovering waste glass (WG) in concrete demonstrates excellent progress in lowering the amount of glass. Researchers have found that adding waste glass to concrete improves its qualities; WG can be utilized as powder, fine as well as coarse aggregate. However, the question that arises is how this powder added to concrete improves, or at least maintains, the mechanical properties of the concrete despite the reduction in the cement quantity. The aim of the present paper is to investigate the behavior of concrete with the addition of glass powder. For this purpose, a control concrete and concretes were prepared with 10%, 15% and 20% of the cement content of the glass powder, based on the same concrete formulation and by varying the W/C ratio. In the hardened state, the addition of glass powder up to 20% of the cement content, generated an increase in compressive strength at 28 days; this increase is caused by the reaction between the glass powder and the lime released during the hydration of Portland cement and creates a binder called hydrated calcium silicate (S-C-H) (pozzolanic reaction). The latter plays an important role in increasing the strength of concrete, and since the fineness of the glass powder is similar to that of cement, it has a role of filling, and accelerates the pozzolanic reaction. For an addition of 20% to 30% of pozzolan, theoretically we could react all the lime produced by the hydration of Portland cement. Therefore, beyond 25% or 30% of the glass powder, the strength is affected, which has been confirmed by many researchers. Finally, it can be concluded that the use of glass powder in concrete improves its mechanical behavior compared to ordinary condition, but with a limited percentage of 20% of the cement content.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"13 1","pages":"27 - 38"},"PeriodicalIF":1.1,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44900891","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

Influence of Fibers on Fresh and Mechanical Properties of (FRC) Fiber Reinforced Concrete, A Step Towards Sustainability 纤维对(FRC)纤维增强混凝土新鲜性能和力学性能的影响——迈向可持续性的一步

IF 1.1

Journal of Applied Engineering Sciences Pub Date : 2023-04-01 DOI: 10.2478/jaes-2023-0003

M. Ahsan, M. Adil Sultan, Faisal M. Zeidan A., S. Cheema, M. Jawad, Humaira Kanwal, M. Asim, Tayyab Mughal, M. Tahir, A. Mahmood, Sadia Mughal

{"title":"Influence of Fibers on Fresh and Mechanical Properties of (FRC) Fiber Reinforced Concrete, A Step Towards Sustainability","authors":"M. Ahsan, M. Adil Sultan, Faisal M. Zeidan A., S. Cheema, M. Jawad, Humaira Kanwal, M. Asim, Tayyab Mughal, M. Tahir, A. Mahmood, Sadia Mughal","doi":"10.2478/jaes-2023-0003","DOIUrl":"https://doi.org/10.2478/jaes-2023-0003","url":null,"abstract":"Abstract Mostly used material is concrete which has versatile quality for construction works. Fibrous concrete have significant factor that improve the scale and value to concrete for humid environments with significant role. Day by day abundant demand and use of concrete is increasing. It is considered as a 2nd largest building material due to the major productivity. By the use of fibrous concrete, some bonding and environmental issues have been addressed. Keeping in this view, an experimental based study is conducted to evaluate the strength of fiber reinforced concrete at different percentages 0%, 0.5%, 1.0%, 1.5% and 2.0%. All percentages are added by the weight of concrete with all fibers. In this connection, one hundred and fifty-three cylinders of five mixes are prepared. Workability checked of fresh concrete during the pouring of concrete cylinders. Poured cylinders’ samples are left for different curing ages at 7 and 28 days. One hundred and two cylinders for compression at 7 and 28days but fifty-one cylinders for split tensile test at 28days with all fibers i.e. glass fiber, steel fiber, coconut fiber and polypropylene fiber. After curing, compression and split tensile tests are performed to check the strength of hardened concrete. Workability of five mixes lies between 40-90mm.Fibrous concrete is suitable for humid environment where high strength and voids less concrete are required. Addition of fibers in concrete may improves the strength parameters as well as to increase the bonding and tensile properties of concrete. It reduces the quantity of water to be used in concrete. Also the use of different types of fibers has been proved to be economical and is considered as environmental friendly construction material.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"13 1","pages":"17 - 22"},"PeriodicalIF":1.1,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41376926","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

Seismic Analysis of Reinforced Concrete Frame Using Shake Table Test 基于振动台试验的钢筋混凝土框架抗震分析

IF 1.1

Journal of Applied Engineering Sciences Pub Date : 2023-04-01 DOI: 10.2478/jaes-2023-0004

M. Arastu, K. Moin

引用次数: 0

The Effect of Brick and Glass Powder on the Mechanical Properties and Porosity of Self-Compacting Mortar 砖和玻璃粉对自密实砂浆力学性能和孔隙率的影响

IF 1.1

Journal of Applied Engineering Sciences Pub Date : 2023-04-01 DOI: 10.2478/jaes-2023-0006

Yasmina Bouleghebar, M. Bentchikou, O. Boukendakdji, K. El-Hadj, F. Debieb, A. Maisarah

{"title":"The Effect of Brick and Glass Powder on the Mechanical Properties and Porosity of Self-Compacting Mortar","authors":"Yasmina Bouleghebar, M. Bentchikou, O. Boukendakdji, K. El-Hadj, F. Debieb, A. Maisarah","doi":"10.2478/jaes-2023-0006","DOIUrl":"https://doi.org/10.2478/jaes-2023-0006","url":null,"abstract":"Abstract The use of glass and brick powder waste as supplementary cementious material provides an effective approach to produce concrete in order to effectively save resources and solve environmental pollution problems. This study shows the evolution of the preparation of an eco-friendly self-compacting mortar (SCM) with various fineness levels and replacement ratios of crushed glass and crushed calcined brick waste. Cement was replaced by weight, by 8, 12, 16, 20, 24% of glass powder (GP) and 4, 8, 12, 16 and 20% of crushed brick powder (BP), with three specific surface Blaine (SSB) fineness measurements (F1=3300cm2/g,F2=4400 cm2/g and F3=6000 cm2/g) for both wastes. Mini-slump and V-funnel flow time tests of fresh SCM were evaluated. Compressive and flexural strength developments of cured SCMs were determined on 7, 14, 28, 5 6, and 90 days. In addition, porosity of SCM was also evaluated. The results revealed that the (SCM-GP) mix increases workability and reduces superplasticizer dosage, while the (SCMBP) mix reduces workability with a slight increase in superplasticizer. When the GP fineness is higher than the cement fineness, the compression strength with GP contents up to 16% is superior to without the GP, whereas for the BP the strength improvement is up to 8%, while the compression strength decreases when the GP and BP fineness is close or lower than the cement fineness. The porosity diminishes with the increase of the fineness; the 12% of the GPF3 indicated the lowest porousness at 400 days, whereas for SCM-BP the 8BPF3 is the least porous mixture.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"13 1","pages":"39 - 52"},"PeriodicalIF":1.1,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46845256","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

Earthquake Behavior of Concrete Gravity Dams During Ground Motions 混凝土重力坝在地面运动中的地震行为

IF 1.1

Journal of Applied Engineering Sciences Pub Date : 2023-04-01 DOI: 10.2478/jaes-2023-0013

D. Ouzandja, M. Messaad, T. Messaad

{"title":"Earthquake Behavior of Concrete Gravity Dams During Ground Motions","authors":"D. Ouzandja, M. Messaad, T. Messaad","doi":"10.2478/jaes-2023-0013","DOIUrl":"https://doi.org/10.2478/jaes-2023-0013","url":null,"abstract":"Abstract The stability evaluation of the dams subjected to seismic excitations is really very complex as the earthquake response of the concrete gravity dam depends upon its connection joints with foundation rock. This study presents the seismic response of concrete gravity dams considering welded contact and friction contact and along dam-foundation rock interface. Friction contact is provided using contact elements. Two-dimensional finite element model of Oued Fodda concrete gravity dam, located in Chlef at the northwestern part of Algeria, is used for this purpose. Nonlinear analyses of dam-foundation rock system are performed using ANSYS software. The reservoir water is modeled as added mass using the Westergaard approach. The Druker-Prager model is employed in the nonlinear analysis for dam concrete. The surface-to-surface contact elements based on the Coulomb's friction law are used to describe the friction. These contact elements use a target surface and a contact surface to form a contact pair. According to this study, when the friction contact is considered in joints, sliding displacement of dam base occurs along the dam-foundation rock interface. The dam sliding along its foundation decreases the deformation response; principal stresses in the dam body and shear force at both the heel and toe of the dam.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"13 1","pages":"99 - 104"},"PeriodicalIF":1.1,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46474746","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

Oradea’s 1900s Industrial Structures Behaviour 奥拉迪亚的20世纪工业结构行为

IF 1.1

Journal of Applied Engineering Sciences Pub Date : 2023-04-01 DOI: 10.2478/jaes-2023-0015

Ioana-Francesca Prada Hanga-Fărcaş, C. Bungau, A. Scurt, A. Durgheu, A. Pescaru, M. Prada

引用次数: 0

Permeation and Fiber Matrix Bond Behaviour of Ultra High Performance Concrete – A Review 超高性能混凝土的渗透性和纤维基体粘结性能——综述

IF 1.1

Journal of Applied Engineering Sciences Pub Date : 2022-12-01 DOI: 10.2478/jaes-2022-0028

S. Prakash, S. Kumar, B. Rai

引用次数: 0

Effect of Sands on the Evolution of the Modulus of Deformability and Longitudinal and Transverse Elasto-Instantaneous Deformations as a Function of the Relative Constraint in Concrete 砂对混凝土变形模量和纵向和横向弹性瞬时变形随相对约束变化的影响

IF 1.1

Journal of Applied Engineering Sciences Pub Date : 2022-12-01 DOI: 10.2478/jaes-2022-0025

M. Khouadjia, K. Abdou, A. Belkadi, O. Kessal, B. Mezghiche

{"title":"Effect of Sands on the Evolution of the Modulus of Deformability and Longitudinal and Transverse Elasto-Instantaneous Deformations as a Function of the Relative Constraint in Concrete","authors":"M. Khouadjia, K. Abdou, A. Belkadi, O. Kessal, B. Mezghiche","doi":"10.2478/jaes-2022-0025","DOIUrl":"https://doi.org/10.2478/jaes-2022-0025","url":null,"abstract":"Abstract The production of crushed sand is accompanied by the production of fine particles. The proportion of these fine particles varies from one sand to another. The current publications of standards for reference in the construction industry have been adapted by increasing the limit of fine particles in crushed sand, but this is insufficient because sands with high rate of fine particles are not used in the industry. The principal objective of this study is to investigate the influence of crushed sands with different mineralogical natures (limestone and siliceous) and with varying proportions of fine particles on the evolution of the modulus of deformability and of longitudinal and transverse Elasto-instantaneous deformations. The experimental results showed that the longitudinal and transverse Elasto-instantaneous deformations and the modulus of deformability varied according to the nature of the sands (river sand, quarry sand, dune sand) and according to the fine content of the sands. Logarithmic regressions showed an accurate fit for the correlation coefficient R2. The test results demonstrated that deformations are influenced by sand type and indicated an optimal of 10% of fine particles. Empirical equations can predict the modulus of deformability from prismatic concretes.","PeriodicalId":44808,"journal":{"name":"Journal of Applied Engineering Sciences","volume":"12 1","pages":"185 - 192"},"PeriodicalIF":1.1,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48484244","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