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Analysis of Static Bending of Plates FGM Using Refined High Order Shear Deformation Theory 基于精细高阶剪切变形理论的FGM板静力弯曲分析
Journal of Building Materials and Structures Pub Date : 2019-03-29 DOI: 10.5281/ZENODO.2609306
S. Merdaci, S. Boutaleb, H. Hellal, S. Benyoucef
{"title":"Analysis of Static Bending of Plates FGM Using Refined High Order Shear Deformation Theory","authors":"S. Merdaci, S. Boutaleb, H. Hellal, S. Benyoucef","doi":"10.5281/ZENODO.2609306","DOIUrl":"https://doi.org/10.5281/ZENODO.2609306","url":null,"abstract":"This work deals with the analysis of the mechanical bending behavior of a rectangular plate simply supported on four sides (FGM), subjected to transverse static loading. The high order theory is used in this work, The developed models are variably consistent, have a strong similarity with the classical plate theory in many aspects, do not require correction to the shear factor, and give rise to variations transverse shear stresses such as transverse shear parabolically varies across the shear thickness and satisfies surface conditions without stresses. Equilibrium equations are obtained by applying the principle of virtual works. The mathematical expressions of the arrow, the stresses are obtained using Navies approach to solve the system of equilibrium equations. The influence of mechanical loading and the change of the parameter of the material on mechanical behavior of the plate P-FGM are represented by a numerical example.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47684721","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: 3
Development of High Thermal Stability Geopolymer Composites Enhanced by Nano Metakaolin 纳米偏高岭土增强高热稳定性地聚合物复合材料的研制
Journal of Building Materials and Structures Pub Date : 2019-03-29 DOI: 10.5281/ZENODO.2604753
A. Nagar, H. Khater
{"title":"Development of High Thermal Stability Geopolymer Composites Enhanced by Nano Metakaolin","authors":"A. Nagar, H. Khater","doi":"10.5281/ZENODO.2604753","DOIUrl":"https://doi.org/10.5281/ZENODO.2604753","url":null,"abstract":"This paper deals with study of thermal stability of geopolymer composites enhanced by nano metakaolin materials (NMK) and exposed to high firing temperature up to 1000 °C. The main geopolymer made up of water cooled slag having various kaolin ratios.  The activators used are Na2SiO3 and NaOH in the ratio of 3:3. The thermo-physical, micro-structural and mechanical properties of the geopolymers before and after the exposure to elevated temperatures of 300, 500, 600 800 and 1000 °C have been investigated. The fire shrinkage of the geopolymer specimens increased by increasing temperature up to 1000 oC. Also, the fire shrinkage increased slowly up to 500 °C. The mechanical strength of geopolymer specimens increased with temperature up to 500 oC. The good thermo-physical and mechanical properties for these geopolymer composites increase the possibility of vast application of these eco-friendly materials in construction sectors.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42211887","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: 5
Behavior of Recycled Asphalt to the Fatigue 再生沥青的疲劳性能
Journal of Building Materials and Structures Pub Date : 2019-03-29 DOI: 10.5281/ZENODO.2619495
A. Bordjiba, H. Guenfoud
{"title":"Behavior of Recycled Asphalt to the Fatigue","authors":"A. Bordjiba, H. Guenfoud","doi":"10.5281/ZENODO.2619495","DOIUrl":"https://doi.org/10.5281/ZENODO.2619495","url":null,"abstract":"Climatic and traffic effects are the causes of aging of the surface layer of asphalt, which leads to the necessary renovation of the latter. The use of waste from the tread layer provides a viable and beneficial solution for the environment and the economy. However, this solution must meet the requirement of sustainable development, which necessitates that a road has a very long lifespan. In this study we investigated the performance of recycled asphalt in terms of fatigue (as an element of life-cycle control). All the formulas were tested by the fatigue test in order to define the influence of the proportions of the asphalt aggregates, penetrability of the new binder used, and the manufacturing temperature. The results obtained showed the relationship between the contribution binder (reproduced between the new binder and the old binder) and the fatigue resistance under the influence of the parameters that we have mentioned above. At the end an optimization study has been carried in order to determine exactly the doses required to formulate recycled asphalt resisted to fatigue, the optimization seeks to maximize the asphalt aggregates and minimized the temperature of manufacture with a class of the binder compatible.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46670893","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
Impacts of Diatomaceous Earth on the Properties of Cement Pastes 硅藻土对水泥浆性能的影响
Journal of Building Materials and Structures Pub Date : 2019-01-19 DOI: 10.5281/ZENODO.2538094
Bashir Hasanzadeh, Zhihui Sun
{"title":"Impacts of Diatomaceous Earth on the Properties of Cement Pastes","authors":"Bashir Hasanzadeh, Zhihui Sun","doi":"10.5281/ZENODO.2538094","DOIUrl":"https://doi.org/10.5281/ZENODO.2538094","url":null,"abstract":"Fresh properties of concrete are closely related to operation and construction, such as transporting, placing, compacting, etc.; and they also have a great impact on the lifetime performance of concrete. In this paper, the influence of Diatomaceous Earth (DE) as a natural pozzolan on fresh properties of cement pastes has been investigated. Cement pastes with different water-to-binder ratios (w/b=0.4, 0.5 and 0.6) and 0%, 2%, 6% and 10% replacement levels of DE by weight of cement were studied. Viscosity, yield stress, flow diameter, bleeding, setting times, and the heat evolution of all cement pastes were measured. Results showed that DE has a significant impact on fresh properties of cement pastes. Increasing DE content in cement pastes resulted in higher viscosity and lower flow diameters. Pastes with higher DE replacement levels showed lower bleeding rate and shorter initial and final setting times. The isothermal calorimetry test also showed that, as a pozzolanic material, DE lowered the heat of hydration, however, it advanced the appearance of the heat evolution peaks which was in agreement with the results from setting time tests.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43666700","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
An empirical enquiry into windows used in tropical office spaces 热带办公空间窗户的实证研究
Journal of Building Materials and Structures Pub Date : 2019-01-14 DOI: 10.5281/ZENODO.2539120
K. A. Gyimah, S. Amos-Abanyie
{"title":"An empirical enquiry into windows used in tropical office spaces","authors":"K. A. Gyimah, S. Amos-Abanyie","doi":"10.5281/ZENODO.2539120","DOIUrl":"https://doi.org/10.5281/ZENODO.2539120","url":null,"abstract":"Environmental health is very instrumental to the survival of the human race and there is the need for behavioural change for its quality. Grounded in literature is the fact that amongst all the elements of the building fabric, window is the only element which contributes holistically to Indoor Environmental Quality (IEQ). However, there is no certainty that building professionals or clients consider IEQ in the selection of windows for buildings and spaces holistically. This study seeks to evaluate the various types of windows mostly used in office spaces and establish the rational for their choice. Questionnaires in the form of Google forms were developed and sent to a convenient sampled population of architects and clients in Ghana. Results shows that none of the architects or clients choice of window had a holistic rational towards achieving all the variables of IEQ - thermal comfort, lighting quality, air quality and sound quality. Most of the choices by respondents were based on at least one of the variables of IEQ as a rational. In some cases, the rational of clients had no link to IEQ. Both clients and professionals suggested modifications to current office windows for better IEQ. It is also recommended that further research is carried out to validate the findings. The relevance of this study cannot be down played as knowledge is acquired for re-engineering of appropriate and holistic window towards IEQ.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46123507","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
A study on Strengthening of Building foundation for Storey Extension 建筑基础扩建加固的研究
Journal of Building Materials and Structures Pub Date : 2019-01-13 DOI: 10.5281/ZENODO.2538661
M. Zumrawi, Hiba K. E. Aldawi
{"title":"A study on Strengthening of Building foundation for Storey Extension","authors":"M. Zumrawi, Hiba K. E. Aldawi","doi":"10.5281/ZENODO.2538661","DOIUrl":"https://doi.org/10.5281/ZENODO.2538661","url":null,"abstract":"Storey extensions are an increasingly popular way to crowded cities. Lack experience and knowledge concerning strengthening of structures are major challenges for engineers. This paper presents strengthening practice adopted for foundations of existing building when storey extension is needed. Literature concerning strengthening techniques commonly adopted and some historical cases were reviewed. A complex hall building in university of Khartoum which was rehabilitated in 2009 by strengthening the structural members of the existing building to accommodate additional floors was undertaken as a case study. The records and reports of the original design and last rehabilitation of the building were reviewed. Field inspection of the building condition before rehabilitation was carried out. The study results showed that the appropriate design, the strengthening materials used and the procedure followed are the key factors for economical and successful strengthening.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71055503","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: 3
Mechanical Properties of Concrete with partial replacement of Coarse aggregates by Coconut Shells and reinforced with Coconut Fibre 椰壳部分替代粗集料并用椰纤维增强混凝土的力学性能
Journal of Building Materials and Structures Pub Date : 2019-01-13 DOI: 10.5281/ZENODO.2538831
M. Bharat, T. Sushant, G. Subid, T. Aasish
{"title":"Mechanical Properties of Concrete with partial replacement of Coarse aggregates by Coconut Shells and reinforced with Coconut Fibre","authors":"M. Bharat, T. Sushant, G. Subid, T. Aasish","doi":"10.5281/ZENODO.2538831","DOIUrl":"https://doi.org/10.5281/ZENODO.2538831","url":null,"abstract":"This paper centers around the study of physical and mechanical properties of concrete reinforced with coconut fibre and the coarse aggregates of which are partially replaced with coconut shells. American Concrete Institute (ACI) method has been used to design M20 concrete wherein coconut shells (CS) replaced the coarse aggregates (CA) by 6%, 8%, 10%, 12% and 14% by volume. Under each replacement of CA by CS, coconut fibres were added by 3%, 4% and 5% of cement content. Compressive strength of concrete was found to comply with characteristic strength for certain mixes which avers that the replacements were justifiable for concrete production and thus, the optimum mix for the concrete prepared thereby, would have to be considered accentuating the tensile strength which was actually the one with 10% replacement of CA by CS in terms of volume and 3% addition of coconut fibre. The research vividly evinces a decrease in overall density of the concrete thus prepared. The authors suggest the use of coconut shell and fibre in the production of concrete not only because they impart themselves as viable materials, but their use would also assist to abate the amount of environmental waste.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47398532","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
Reaction kinetics of cassava starch graft anionic nonionic type polymer internal curing agents 木薯淀粉接枝阴离子-非离子型聚合物内固化剂的反应动力学
Journal of Building Materials and Structures Pub Date : 2019-01-11 DOI: 10.5281/ZENODO.2544011
R. Liu, Zhihui Sun, Xiang Weiheng, Ping Chen, Zhou Rui-zhe
{"title":"Reaction kinetics of cassava starch graft anionic nonionic type polymer internal curing agents","authors":"R. Liu, Zhihui Sun, Xiang Weiheng, Ping Chen, Zhou Rui-zhe","doi":"10.5281/ZENODO.2544011","DOIUrl":"https://doi.org/10.5281/ZENODO.2544011","url":null,"abstract":"Internal curing can help to improve the durability of concrete by preventing and minimizing initial cracks due to autogenous shrinkage and plastic shrinkage. Using a reliable internal curing agent is essential to the effectiveness of the internal curing process. This paper investigates the reaction kinetics of a starch graft anionic nonionic type polymer. The results demonstrate that initiator monomer concentration, and starch concentration are positively correlated with graft reaction rate Rp. Based on the research, the kinetics equation of this cassava starch graft anionic nonionic-type polymer has also been developed, which coincides well with the law of free radical polymerization. The obtained Rp equation is a first order dependence of the monomer concentration and the square root of the initiator concentration. And Rp is further correlated to the reaction temperature based on a sigmoid function instead of a linear function. It is also found that the polymerization reaction is characterized by the coexisted disproportion termination and coupling termination.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43402839","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
Sustainable Utilization of Plastic Waste in Concrete Mixes - a Review 塑料垃圾在混凝土混合料中的可持续利用——综述
Journal of Building Materials and Structures Pub Date : 2019-01-11 DOI: 10.5281/ZENODO.2538208
S. Kore
{"title":"Sustainable Utilization of Plastic Waste in Concrete Mixes - a Review","authors":"S. Kore","doi":"10.5281/ZENODO.2538208","DOIUrl":"https://doi.org/10.5281/ZENODO.2538208","url":null,"abstract":"Plastic waste creates serious environmental problems, mainly owing to the inconsistency of the wastes streams. Due to rapid population growth and its consistent necessity the use of plastic is increasing regularly. This creates a large, the quantity of garbage every day which is unhealthy and pollutes the environment. In present scenario solid waste management is a challenge in our country. This paper represents a collection of ideas of various studies done on the use of Plastic Waste Materials in concrete mixes. Conclusions are drawn based upon the respective results of all the mentioned research papers.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45683753","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: 5
Numerical prediction and experimental validation of sound transmission loss for different acoustic materials 不同声材料传声损失的数值预测与实验验证
Journal of Building Materials and Structures Pub Date : 2018-06-04 DOI: 10.5281/ZENODO.1297183
S. Kirti, S. Mahavir, K. Y. Yudhister
{"title":"Numerical prediction and experimental validation of sound transmission loss for different acoustic materials","authors":"S. Kirti, S. Mahavir, K. Y. Yudhister","doi":"10.5281/ZENODO.1297183","DOIUrl":"https://doi.org/10.5281/ZENODO.1297183","url":null,"abstract":"This paper examines the sound transmission loss (STL) through multilayer panel materials commonly used in the building industry. The acoustic characteristics of different materials and multilayer panels are studied. Experimental data for the noise reduction coefficient in the frequency range 100 to 4000 Hz have been obtained using the two room’s method.  Mass theory is also used to predict the acoustic performance of these systems and to improve their acoustic performance with noise treatment.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45245788","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
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