Journal of Building Materials and Structures最新文献_第9页

Mechanical Strengths of Modified PET Mortar Composites in Aggressive MgSO4 Medium: ACI & B.S Predictions 改性PET砂浆复合材料在侵蚀性MgSO4介质中的力学强度：ACI和B.S预测

Journal of Building Materials and Structures Pub Date : 2018-02-19 DOI: 10.5281/ZENODO.1173375

N. K. Tani, A. Benosman, H. Taïbi, M. Mouli

{"title":"Mechanical Strengths of Modified PET Mortar Composites in Aggressive MgSO4 Medium: ACI & B.S Predictions","authors":"N. K. Tani, A. Benosman, H. Taïbi, M. Mouli","doi":"10.5281/ZENODO.1173375","DOIUrl":"https://doi.org/10.5281/ZENODO.1173375","url":null,"abstract":"Composites mortars based on plastic aggregates are often considered as an innovative materials of the future because of their potential and the advantages they present. In this paper, a comparative study was carried out on the effect of magnesium sulfate MgSO4 (5%) attack on the durability of composite mortars modified by recycled polyethylene terephthalate (PET). Laboratory tests were accomplished on limestone sand and cement mortars where the blended Portland cement was partially replaced by various volume fractions of PET plastic aggregates. Mechanical properties measured on specimens were used to assess the changes in the compressive strengths of PET-mortar composites exposed to MgSO4 attack at different ages, mainly the Young modulus of elasticity. Based on experimental compressive tests on selected specimens and there densities, the evolution of static Young modulus of elasticity has been discussed in accordance to predicted models proposed by (ACI-318) and (BS-8110) codes of practice. In addition, a comparative analysis has been carried out for corrosion resistance coefficients K of referenced mortar to those modified with plastic aggregates. It can be noted that, the corrosion resistance coefficients decrease as much as composite specimens are exposed to MgSO4 corrosive medium. For the case of modified composites, the values of K based on predicted Young modulus before and after immersion are better than the ones calculated for the unmodified mortar. Therefore, ACI 318 prediction model is recommended code for design and investigation works related to reparation mortars, screeds, pavements…etc. Also, it can be concluded that adding PET plastic aggregates by volume to blend Portland cement act to improve the corrosive resistance of this cement against MgSO4 aggressive medium.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45466867","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

Strength and durability of low-impact environmental self-compacting concrete incorporating waste marble powder 含废大理石粉的低冲击环保自密实混凝土的强度和耐久性

Journal of Building Materials and Structures Pub Date : 2018-02-19 DOI: 10.5281/ZENODO.1134146

Aboubakeur Boukhelkhal, Lakhdar Azzouz, Benabed Benchaâ, A. Belaidi

引用次数: 11

The effect of building materials choice on the thermal comfort in the auto-produced individual housing in Biskra. 建筑材料选择对Biskra汽车生产的独立住宅热舒适性的影响。

Journal of Building Materials and Structures Pub Date : 2018-02-19 DOI: 10.5281/ZENODO.1165204

Sihem Latreche, L. Sriti

{"title":"The effect of building materials choice on the thermal comfort in the auto-produced individual housing in Biskra.","authors":"Sihem Latreche, L. Sriti","doi":"10.5281/ZENODO.1165204","DOIUrl":"https://doi.org/10.5281/ZENODO.1165204","url":null,"abstract":"The building envelope is the first barrier to protect against external climatic variations. Generally, it consists of two types of walls: opaque walls (walls and roof) and transparent walls (Windows). The design characteristics of the enclosure strongly affect the occupants' thermal comfort, as well as the building energy consumption. The constructive choices relating to structural elements, in particular, walls, roofing and openings are generally considered in the thermal exchanges between the building and its environment. In the present study, which is based on experimental analysis in the self-generated residential sector in Biskra (Algeria), where a warm and arid climate predominates, we aim to evaluate the thermal impact of certain architectural and constructive parameters that are specific to residential habitat self-produced in Biskra. This paper summarizes the main results obtained from an in situ measurement campaign that evaluated the essential parameters of thermal comfort such as ambient and surface temperature, air velocity, and humidity. These parameters were used as indicators to measure the impact of the envelope material characteristics on its climatic adaptability. This paper also presents some recommendations for optimizing the choice of building materials specific to the self-produced residential in order to improve its thermal performance while preserving the essentials of its specificities.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48805659","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

Recycling of rubber waste in sand concrete 砂混凝土中橡胶废料的回收利用

Journal of Building Materials and Structures Pub Date : 2018-02-19 DOI: 10.5281/ZENODO.1165202

Mohamed Guendouz, Djamila Boukhelkhal

{"title":"Recycling of rubber waste in sand concrete","authors":"Mohamed Guendouz, Djamila Boukhelkhal","doi":"10.5281/ZENODO.1165202","DOIUrl":"https://doi.org/10.5281/ZENODO.1165202","url":null,"abstract":"The large development in the consumption of rubber is observed in the recent years, which leads to an increase of the production of rubber related waste. Rubbers are not hazardous waste, but they constitute a hazard for both environment and health, in case of fire in storage sites. So, recycling appears as one of the best solutions for disposing of rubber waste.This paper presents an experimental investigation dealing with the valorisation of rubber waste, specifically rubber obtained from old shoes sole waste. The waste rubbers are used form (0/5 mm) to mixes as addition at percentage (10%, 20%, 30% and 40%) in sand concrete. The physical (workability, bulk density), mechanical (compressive and flexural strength) and thermal properties are studied and analysed.The results indicate that the incorporation of rubber waste particles in sand concrete contributes to increase the workability and reduce the bulk density of all studied sand concrete. The obtained results show that mechanical performance (compressive and flexural strength) decreases when the rubber content increases. Nevertheless, the presence of rubber aggregate leads to a significant reduction in thermal conductivity, which improves the thermal insulation performances of sand concrete. This study insures that reusing of recycled rubber waste in sand concrete gives a positive approach to reduce the cost of materials and solve some environmental problems.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49663760","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

Biocomposite Bridge Biocomposite桥

Journal of Building Materials and Structures Pub Date : 2017-08-27 DOI: 10.34118/jbms.v4i1.28

D. Malschaert

引用次数: 1

Impact of electric arc furnace slag on geopolymer composites exposed to sulphate solution 电弧炉渣对硫酸盐溶液暴露的地聚合物复合材料的影响

Journal of Building Materials and Structures Pub Date : 2017-08-27 DOI: 10.5281/ZENODO.848887

H. Khater

{"title":"Impact of electric arc furnace slag on geopolymer composites exposed to sulphate solution","authors":"H. Khater","doi":"10.5281/ZENODO.848887","DOIUrl":"https://doi.org/10.5281/ZENODO.848887","url":null,"abstract":"Effect of sulfate solution on the geopolymer formed from electric arc furnace slag (EAF) along with water cooled slag and cement kiln dust was studied. Activation was carried up on usage of 25% CKD as it bears high alkali content that can initiate and propagate the polymerization process. The formed geopolymer products were immersed in 5% MgSO4 solution to determine the stability up on sulfate attack. FTIR, XRD, SEM, compressive strength and water absorption were utilized to examine the resulted geopolymer product under sulfate attack. Results showed that, the compressive strength of geopolymer specimens increase with EAF slag up to 50% then decrease with further slag increase, possessing stability up 12 months and giving an increased compressive strength than the control mix that has not EAFS by 6.53%, 14.72%, 47.44% and -4.89 % after immersing ages of 3 months and 2.26, 14.26, 43.97 and 19.98 % after immersing age of 12 months for replacement by 10, 25, 50 and 75% of EAFS, respectively. Data elucidated a good stability and resistance of mix containing slag substitution by 50 % EAF and 25 % GGBFS and results in further enhancement in both mechanical and microstructural characteristics than the non-immersed samples (28days).","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41696806","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

Rehabilitation of existing building structure in expansive soils: A case study in Laghouat, Algeria 膨胀土中现有建筑结构的修复：以阿尔及利亚拉古亚特为例

Journal of Building Materials and Structures Pub Date : 2017-08-27 DOI: 10.5281/zenodo.852719

Aissa Ouai

引用次数: 0

Effect of content and fineness of slag as high volume cement replacement on strength and durability of ultra-high performance mortar 矿渣掺量和细度对超高性能砂浆强度和耐久性的影响

Journal of Building Materials and Structures Pub Date : 2016-11-06 DOI: 10.5281/ZENODO.242626

Souradeep Gupta

{"title":"Effect of content and fineness of slag as high volume cement replacement on strength and durability of ultra-high performance mortar","authors":"Souradeep Gupta","doi":"10.5281/ZENODO.242626","DOIUrl":"https://doi.org/10.5281/ZENODO.242626","url":null,"abstract":"Replacement of cement by slag in ultra-high performance concrete (UHPC) makes it a green material for building and construction application. However, slag hydrates slower which delay strength gain in UHPC which can be addressed by using slag of high fineness. In this study, cement is replaced by slag at 20% and 60% by weight. Slag of three different fineness is used: 400±4 m2/kg, 556±5 m2/kg and 750± 5 m2/kg at constant water-binder ratio of 0.25 for all mixes. Compressive and flexural strength were measured for mechanical performance while water penetration test and chloride migration test were conducted to enumerate durability.Results show that early and late compressive strength and flexural strength are improved significantly by incorporation of slag with fineness 556 ± 5 m2/kg compared to reference and slag of 400 m2/kg fineness. However, at similar fineness 20% slag incorporation is found to produce higher early strength compared to 60% slag although 90 day strength for both replacement percentages are similar. On durability aspects it is found that slag with fineness of 556 m2/kg and 750 m2/kg demonstrates significantly lower penetration depth and very high resistance to chloride migration at 28 day and 90 day age irrespective of slag replacement percentage. The study suggests that slag of high fineness (about 556 m2/kg based on the study) and 20-60% cement replacement can significantly accelerate hydration and improve long term durability of UHPC mortar.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71050842","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: 25

Effect of inclusion of crumb rubber on the unconfined compressive strength and wet-dry durability of cement stabilized clayey soil 橡胶颗粒包埋对水泥稳定粘土无侧限抗压强度和干湿耐久性的影响

Journal of Building Materials and Structures Pub Date : 2016-11-06 DOI: 10.5281/ZENODO.242643

J. Yadav, S. K. Tiwari

{"title":"Effect of inclusion of crumb rubber on the unconfined compressive strength and wet-dry durability of cement stabilized clayey soil","authors":"J. Yadav, S. K. Tiwari","doi":"10.5281/ZENODO.242643","DOIUrl":"https://doi.org/10.5281/ZENODO.242643","url":null,"abstract":"In the present study, the effect of inclusion of waste crumb rubber and cement on the unconfined compressive strength and wet-dry durability of clayey soil has been investigated. Crumb rubber and cement were added to clayey soil at ranges of 2.5%-10% and 3%-6% respectively. The results of the investigation revealed that the incorporation of crumb rubber influenced the unconfined compressive strength, axial strain at failure, energy absorption capacity and wet-dry durability of the cement-stabilized clay. The study reveals that as the content of crumb rubber in the cement-stabilized clayey soil increases the unconfined compressive strength decreases but prosperously changes the behavior of the cement-stabilized clay from brittle to ductile. The axial strain corresponding to peak axial stress and energy absorption capacity of the specimens can be increased by limiting the content of crumb rubber up to 5%. The weight loss of the cement-stabilized clay mixed with crumb rubber increases as the content of crumb rubber increases. With the prolongation of the curing period, the weight loss of cement-stabilized clay mixed with crumb rubber decreases. Further, the weight loss of 90 days cured specimens of clayey soil incorporated with 6% cement and crumb rubber up to 5% meets the recommendation of the material to be used in construction of road pavements as a base, sub-base, and shoulder. Most importantly, the utilization/disposal of this hazardous waste material reduces its impact on environment and health.","PeriodicalId":33130,"journal":{"name":"Journal of Building Materials and Structures","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71051141","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: 37

Durability of concrete using marble mining waste 使用大理石开采废料的混凝土耐久性

Journal of Building Materials and Structures Pub Date : 2016-11-06 DOI: 10.5281/ZENODO.242638

S. Kore, A. K. Vyas

引用次数: 9