International Journal of Civil and Structural Engineering最新文献_第4页

Experimental investigation and feasibility study on stabilized compacted earth block using local resources 就地资源稳定压实土块的试验研究与可行性研究

International Journal of Civil and Structural Engineering Pub Date : 2012-02-23 DOI: 10.6088/IJCSER.00202030012

K. Kabiraj, U. Mandal

{"title":"Experimental investigation and feasibility study on stabilized compacted earth block using local resources","authors":"K. Kabiraj, U. Mandal","doi":"10.6088/IJCSER.00202030012","DOIUrl":"https://doi.org/10.6088/IJCSER.00202030012","url":null,"abstract":"Investigation is carried out mainly to find out a suitable mix proportion to blend locally available materials such as soil, sand, clay, grits, jute, etc. with cement for making compacted earth block for construction of affordable residential buildings. The local soil and clay in and around Jalpaiguri town of West Bengal was mixed with the local sand, and stone grits to make a composite good soil of gravel 15 percent, Sand 50 percent, Silt and Clay 35 percent, for compacted stabilized earth blocks (CSEB).1 Blocks of 254 mm x 127 mm x 76 mm size, were prepared with varying percent of Ordinary Portland Cement (5.0 percent, 7.5 percent, and 10.0 percent) and jute fibre of size 2.5 cm and compacting manually to the standard proctor density. Jute size of 2.5cm was chosen as it was found best option from earlier investigation by the same author 8 compared to other sizes from mixing and compressive strength point of view. The blocks were cured and tested for compressive strength, water absorption and density. Based on the results, it has been concluded that the compacted cement stabilized earth blocks both with or without jute fibre may be a cost effective and environment friendly alternative to the burnt clay bricks in lightly loaded building (rural areas) where stability is not a governing factor.","PeriodicalId":162063,"journal":{"name":"International Journal of Civil and Structural Engineering","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125121838","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: 22

Investigations on fly ash concrete for pavements 路面用粉煤灰混凝土的研究

International Journal of Civil and Structural Engineering Pub Date : 2012-02-23 DOI: 10.6088/IJCSER.00202030015

Vanita Aggarwal, S. M. Gupta, S. N. Sachdeva

引用次数: 5

Review of Shape Memory Alloys applications in civil structures, and analysis for its potential as reinforcement in concrete flexural members 形状记忆合金在土木结构中的应用综述，并分析其在混凝土受弯构件中的加固潜力

International Journal of Civil and Structural Engineering Pub Date : 2012-02-23 DOI: 10.6088/IJCSER.00202030020

S. R. Debbarma, S. Saha

{"title":"Review of Shape Memory Alloys applications in civil structures, and analysis for its potential as reinforcement in concrete flexural members","authors":"S. R. Debbarma, S. Saha","doi":"10.6088/IJCSER.00202030020","DOIUrl":"https://doi.org/10.6088/IJCSER.00202030020","url":null,"abstract":"This paper synthesizes information on the properties of Shape Memory Alloys (SMAs) and its useful aspect towards utilization in civil engineering structures. A basic description of their highly non-linear material behavior in terms of shape memory effect, superelasticity, martensite damping and variable stiffness is presented in this article. The load-deflection behaviors of SMA reinforced concrete (RC) beams have been analyzed using prediction model codes. The effects of the cross-sectional area, reinforcement ratio, yield strength of rebar, and span of beams were considered. Effective moment of inertia, cracking moment, instantaneous and long-term deflections under variable load on beams were analyzed using ACI 318 (2005), Eurocode 2 (CEN 2002), AS 3600 (2001) and CEB (1993) codes. Deflections of SMA reinforced beams were compared with deflections of similar beams reinforced with conventional steel to present the potential of SMAs in restricting instantaneous & long-term deflections. Finally, a new scope of experimental research work is proposed utilizing SMAs as reinforcement in RC flexural members to minimize instantaneous & long-term deflections.","PeriodicalId":162063,"journal":{"name":"International Journal of Civil and Structural Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133915805","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: 16

Experimental study to evaluate short-term deflections for two-way RC slabs 双向RC板短期挠度的试验研究

International Journal of Civil and Structural Engineering Pub Date : 2012-02-23 DOI: 10.6088/IJCSER.00202030018

M. Varma, U. Pendharkar, R. Sharma

{"title":"Experimental study to evaluate short-term deflections for two-way RC slabs","authors":"M. Varma, U. Pendharkar, R. Sharma","doi":"10.6088/IJCSER.00202030018","DOIUrl":"https://doi.org/10.6088/IJCSER.00202030018","url":null,"abstract":"Determination of deflection in structure is important from serviceability criteria. Codal provisions are available to calculate deflections in RC members in general. The codal provisions for calculation of short-term deflection in RC two-way slab are based on the effective moment of inertia (Ieff), The Ieff depends on the cracking moment (Mr) and maximum moment due to service load (M). Short-term deflections determined based on the provision for two-way RC slabs, are not comparable with experimental values. Even sometime negative deflection is obtained with the procedure. Present paper gives a method designated as Equivalent Load Method, in which equivalent load is calculated using Grashoff-Rankine formulae, and is considered to be acting on the slab. The deflection calculated using equivalent load method is found to be closer to experimental values. The negative deflection has been tackled in literature by applying a factor of 0.7 to cracking moment (Mr). The deflection thus calculated again differs considerably with the experimental values. In the paper, with the method, a procedure has been proposed in which instead of the factor 0.7 being applied to Mcr; cracking moment of inertia is proposed to be used in place of effective moment of inertia. The deflection thus calculated has been found to be comparable with experimental results. Experimental data obtained and data available in literature have been used to validate the procedure. Experimental work has been carried out for two end conditions i.e. fixed supported and simply supported two-way RC slab. Six separate specimens were casted for both end condition of different thickness, sizes and for different loads.","PeriodicalId":162063,"journal":{"name":"International Journal of Civil and Structural Engineering","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115523510","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

Damage identification in beams using discrete wavelet transforms 基于离散小波变换的梁损伤识别

International Journal of Civil and Structural Engineering Pub Date : 2012-02-23 DOI: 10.6088/IJCSER.00202030023

K. Sivasubramanian, P. Umesha

引用次数: 6

Nonlinear analysis of Reinforced Concrete Columns with Fiber Reinforced Polymer Bars 纤维增强聚合物钢筋混凝土柱的非线性分析

International Journal of Civil and Structural Engineering Pub Date : 2011-12-01 DOI: 10.1260/1708-5284.8.4.357

Ehab M. Lotfy

引用次数: 4

Three-Dimensional Finite Element Analysis of a Trial Embankment 某试验路堤三维有限元分析

International Journal of Civil and Structural Engineering Pub Date : 2010-05-01 DOI: 10.21608/ICCAE.2010.44403

M. Fattah, Majeed R. Saba’a, M. A. Yousif

{"title":"Three-Dimensional Finite Element Analysis of a Trial Embankment","authors":"M. Fattah, Majeed R. Saba’a, M. A. Yousif","doi":"10.21608/ICCAE.2010.44403","DOIUrl":"https://doi.org/10.21608/ICCAE.2010.44403","url":null,"abstract":"Commonly finite element analyses of embankments and excavations are conducted as two-dimensional representations of the true three-dimensional problem, but very little work was done in determining the relative applicability of these solutions until recently, when three-dimensional programs and high-speed computers became available. A trial embankment constructed in Vaasa (Finland) is analyzed in this paper. The main purpose of the construction was the testing and development of the design methods for the planning of road embankments. Settlements at the base level of the embankment were measured with settlement plates, and deeper in the ground with magnetic extensometer. The pore pressures were measured using open and closed piezometer tips installed at different depths. For the task of analysis carried out in this paper, a finite element computer program named (3-DFEP) was written. The program can solve three-dimensional coupled problems. Both the soil solids and the pore water are modeled by 8-noded brick elements. It was found that the results of three-dimensional analysis are more stable than do plane-strain ones. The settlement became approximately constant after about (600) days. The settlement predicted at that time was approximately (400) mm that is in good agreement with the recorded field data while plane-strain results showed continuous increase in settlement after that time.","PeriodicalId":162063,"journal":{"name":"International Journal of Civil and Structural Engineering","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123758606","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

Sustainable Construction: Value of Certification 可持续建设:认证的价值

International Journal of Civil and Structural Engineering Pub Date : 1900-01-01 DOI: 10.3850/978-981-07-7965-8_83

M. Amado

{"title":"Sustainable Construction: Value of Certification","authors":"M. Amado","doi":"10.3850/978-981-07-7965-8_83","DOIUrl":"https://doi.org/10.3850/978-981-07-7965-8_83","url":null,"abstract":"— The study and implementation of measures to promote sustainability for the future development of society development requires the definition of limits on the uncontrolled consumption of natural resources that are a result of human activities. The construction sector has an enormous effect on the environment due to its massive resource consumption; therefore the development of a process to increase sustainability in this sector is paramount. In this sense the systems that assess sustainable construction play a key role. The emergence of voluntary evaluation and certification systems of construction enables the assessment of sustainability of buildings – their construction and operation. The evaluation and certification systems are in constant evolution, expanding their scope of application. Some countries are developing systems of sustainable construction evaluation adjusted to the local context. Through the study of different systems of evaluation and certification and their contents it was possible to identify and select the key factors that support the development of a system that is geared towards application at the regional level thus accomplishing the value of certification systems of sustainable construction.","PeriodicalId":162063,"journal":{"name":"International Journal of Civil and Structural Engineering","volume":"36 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132073555","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 fibres in enhancing strength and corrosion resistance of fly ash blended quarry dust concrete 纤维对粉煤灰掺石料混凝土增强强度和抗腐蚀性能的影响

International Journal of Civil and Structural Engineering Pub Date : 1900-01-01 DOI: 10.15242/iicbe.c0314086

M. Devi

{"title":"Influence of fibres in enhancing strength and corrosion resistance of fly ash blended quarry dust concrete","authors":"M. Devi","doi":"10.15242/iicbe.c0314086","DOIUrl":"https://doi.org/10.15242/iicbe.c0314086","url":null,"abstract":"Quarry dust which is generally considered as a waste material can be used as an economical alternative to the river sand since it has become a meager construction material and also highly pricey. Fly ash, which is the residue from coal-fired power plants, when used as partial replacement of cement in concrete, results in reduction of cement consumption and CO2 production besides enhancing strength and durability properties. Deterioration of concrete structures due to rebar corrosion is a matter of significant concern since the cost of repairing and rehabilitation of these structures is very expensive. Fibres can be utilized to obtain a durable concrete with low shrinkage and improved strength properties. The objective of this work is to study the influence of polypropylene fibre in enhancing the strength and durability properties of fly ash blended concrete containing quarry dust as fine aggregate. The mechanical properties studied were compressive strength, split tensile strength, and flexural strength in addition to water absorption. The resistance to corrosion was evaluated by means of impressed voltage technique in saline medium, rapid chloride penetration test (RCPT) and weight loss method. From the results it has been arrived that fly ash blended quarry dust concrete along with polypropylene fibre can be effectively and economically utilized in the construction industry.","PeriodicalId":162063,"journal":{"name":"International Journal of Civil and Structural Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128848217","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: 7

3-D Modeling of Soil’s Unsaturated Depth Using Artificial Neural Network (Case Study of Babol) 基于人工神经网络的土体非饱和深度三维建模(以巴宝勒为例)

International Journal of Civil and Structural Engineering Pub Date : 1900-01-01 DOI: 10.1007/978-3-642-31343-1_40

A. Choobbasti, E. Shooshpasha, F. Farrokhzad

引用次数: 5