Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials最新文献_第10页

A Contribution to Analytical Solutions for Buckling Analysis of Axially Compressed Rectangular Stiffened Panels 轴向压缩矩形加筋板屈曲分析的解析解

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2021-10-31 DOI: 10.18280/rcma.310506

V. Ibeabuchi, M. O. Ibearugbulem, Kelechi Okechukwu Njoku, E. O. Ihemegbulem, Princewill Okorie

引用次数: 0

A Cameroonian Study on Mixing Concrete with Wood Ashes: Effects of 0-30% Wood Ashes as a Substitute of Cement on the Strength of Concretes 喀麦隆木灰混合混凝土的研究:0-30%木灰替代水泥对混凝土强度的影响

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2021-10-31 DOI: 10.18280/rcma.310502

T. G. Bikoko

{"title":"A Cameroonian Study on Mixing Concrete with Wood Ashes: Effects of 0-30% Wood Ashes as a Substitute of Cement on the Strength of Concretes","authors":"T. G. Bikoko","doi":"10.18280/rcma.310502","DOIUrl":"https://doi.org/10.18280/rcma.310502","url":null,"abstract":"To fight against the high cost and the increasing scarcity of cement and at the same time to reduce the CO2 greenhouse gases emission associated with the production of Portland cement, two types of wood ashes as a substitute of cement in the production of concretes were investigated. In this paper, we substituted cement by two types of species of wood ashes namely, avocado and eucalyptus ashes following the proportions ranging from 0% to 30% on one hand, and on the other hand, we added these two types of species of wood ashes namely, avocado and eucalyptus ashes following the proportions ranging from 0% to 10% by weight of cement in the concrete samples. After 7, 14 and 28 days of curing, compressive strength tests were conducted on these concrete samples. The findings revealed that using wood ashes as additives/admixtures or as a substitute of cement in the production/manufacturing of concrete decreased the compressive strength of concrete. Hence, it can be said that wood ash has a negative influence on the strength of concrete. At three percent (3%) and ten percent (10%) of addition, the wood ash from eucalyptus specie offers better resistance compared to the wood ash from avocado specie, whereas at five percent (5%) of addition, the wood ash from avocado specie offers better resistance compared to the wood ash from eucalyptus specie. At thirty percent (30%) of substitution, the wood ash from eucalyptus specie offers better resistance compared to the wood ash from avocado specie. The compressive strengths increase with the increase of curing age.","PeriodicalId":42458,"journal":{"name":"Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42254609","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

Viscoelastic Mechanical Model of Asphalt Concrete Considering the Influence of Characteristic Parameter of Fiber Content 考虑纤维含量特征参数影响的沥青混凝土粘弹性力学模型

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2021-10-31 DOI: 10.18280/rcma.310503

Chunshui Huang, Danying Gao, Peibo You

引用次数: 0

Performance Evaluation of Asphalt Binder Modified by Natural Rock Asphalt 天然岩石沥青改性沥青粘结剂的性能评价

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2021-10-31 DOI: 10.18280/rcma.310504

Khalid Mohammed, Ali I. Mansi, Yasir R. Hussein

引用次数: 1

Delamination Analysis of Composite Sandwich Plate of Cork Agglomerate/Glass Fiber-Polyester: An Experimental Investigation 软木结块/玻璃纤维-聚酯复合夹层板的分层分析实验研究

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2021-08-31 DOI: 10.18280/rcma.310402

H. Djemai, A. Labed, M. Hecini, T. Djoudi

引用次数: 1

The Electromagnetic Wave Absorption Performance and Mechanical Properties of Cement-Based Composite Material Mixed with Functional Aggregates with High Fe2O3 and SiC 掺有高Fe2O3和SiC功能集料的水泥基复合材料的电磁波吸收性能和力学性能

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2021-08-31 DOI: 10.18280/rcma.310409

Zuo-shun Zhang, Chao-Shan Yang, Hua Cheng, Xiaohan Huang, Yuhao Zhu

{"title":"The Electromagnetic Wave Absorption Performance and Mechanical Properties of Cement-Based Composite Material Mixed with Functional Aggregates with High Fe2O3 and SiC","authors":"Zuo-shun Zhang, Chao-Shan Yang, Hua Cheng, Xiaohan Huang, Yuhao Zhu","doi":"10.18280/rcma.310409","DOIUrl":"https://doi.org/10.18280/rcma.310409","url":null,"abstract":"Now there’re many researches on the electromagnetic radiation protection function of the cement-based electromagnetic wave absorbing materials, such materials have been widely used in various types of buildings. This paper proposed an idea for preparing a cement-based composite material by mixing functional aggregates with high content of Fe2O3 and SiC, that is, adding Fe3O4 powder and nano-SiC of different contents in the clay, and then sintering at 1190℃; the prepared aggregates showed obvious magnetic loss and dielectric loss to electromagnetic waves, and the numerical tube pressure could reach 16.83MPa. The double-layer reflectivity test board made of functional aggregates showed excellent electromagnetic wave absorption performance, its reflection loss was less than -10dB in the frequency range of 8~18GHz (corresponding to energy absorption greater than 90% EM), and its maximum RL reached -12.13dB. In addition, the compressive strength of the cement-based composite material at the age of 28 days reached 50.1 MPa, which can meet the strength requirements of building materials.","PeriodicalId":42458,"journal":{"name":"Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43386468","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

Using Novel Grey Relational Quantitative Model to Evaluate Magnetron Sputtering Technological Parameters 应用灰色关联定量模型评价磁控溅射工艺参数

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2021-08-31 DOI: 10.18280/rcma.310403

Gong Chen, Lv Zong, You Zuo, Pan Junjie, Cai Xuejian, Feng-Yu Wu, Hou Dongdong, Yan Wang

引用次数: 0

Machinability Studies and Optimization of AA 6082/Fly Ash/Carbonized Eggshell Matrix Composite AA 6082/粉煤灰/碳化蛋壳基复合材料可加工性研究与优化

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2021-08-31 DOI: 10.18280/rcma.310404

N. Ononiwu, C. Ozoegwu, N. Madushele, E. Akinlabi

{"title":"Machinability Studies and Optimization of AA 6082/Fly Ash/Carbonized Eggshell Matrix Composite","authors":"N. Ononiwu, C. Ozoegwu, N. Madushele, E. Akinlabi","doi":"10.18280/rcma.310404","DOIUrl":"https://doi.org/10.18280/rcma.310404","url":null,"abstract":"Machinability studies of aluminium matrix composites (AMCs) is a necessary investigation required to understand their behaviour during machining to produce components effectively and efficiently. This established need has led to the investigation into the machinability of AA 6082 reinforced with 2.5 wt.% fly ash and 2.5 wt.% carbonized eggshell fabricated via stir casting. The studied machinability indices were material removal rate (MRR), cutting temperature, built-up edges (BUE) formation and chip morphology while the selected inputs were cutting speed (100 mm/min, 200 mm/min, 300 mm/min), feed (0.1 mm/rev, 0.2 mm/rev, 0.3 mm/rev) and depth of cut (0.5 mm, 1 mm, 1.5 mm). For the experimental design, the L9 orthogonal array was preferred to create 9 experimental runs. The analysis of the built-up edges showed that it increased at lower cutting speeds and increased feed and depth of cut. The examination of the produced chips after each experimental run showed the presence of c-shaped, helically shaped and ribbon-shaped chips. The analysis of variance (ANOVA) for both MRR and cutting temperature indicated that the depth of cut was the most influential factor on both responses. Multi-objective optimization using desirability function analysis showed that the optimum combination of parameters was 300 mm/min, 0.2 mm/rev and 1.0 mm for the cutting speed, feed and depth of cut respectively. The ANOVA of the composite desirability indicated that the cutting speed was the most contributing factor.","PeriodicalId":42458,"journal":{"name":"Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43791909","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

Influence of Nanofiller Dispersion on Electrical and Mechanical Properties of Epoxy Alumina Nanocomposites 纳米填料分散对环氧-氧化铝纳米复合材料电学和力学性能的影响

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2021-08-31 DOI: 10.18280/rcma.310405

Neelmani, R. Sarathi, H. Suematsu, Toshikatsu Tanaka

{"title":"Influence of Nanofiller Dispersion on Electrical and Mechanical Properties of Epoxy Alumina Nanocomposites","authors":"Neelmani, R. Sarathi, H. Suematsu, Toshikatsu Tanaka","doi":"10.18280/rcma.310405","DOIUrl":"https://doi.org/10.18280/rcma.310405","url":null,"abstract":"The electrical and mechanical properties of the epoxy alumina nanocomposites depend on the uniform dispersion of the nanofiller in the epoxy matrix. Epoxy alumina nanocomposites were prepared using 1, 3, and 5 wt% of alumina nanofiller, and electrical and mechanical properties were analyzed using experimental and modelling studies. Water droplet initiated corona inception voltage (CIV) was identified using fluorescence fiber technique and by Ultra High Frequency (UHF) technique, under AC and DC voltages. The CIV formed due to water droplet have reduced drastically with increase in number of droplets and fluorescent fiber technique found to be more sensitive to identify water droplet initiated discharges. A micro mechanical model was proposed to analyse the combined effect of the interphase and agglomeration properties of the alumina nanoparticles on the tensile strength of epoxy alumina nanocomposites. Variation in ϕagg, Eagg, and E were analysed by adopting the non-parametric distribution of alumina nanoparticles and Young’s modulus increased with the increment in the alumina nanofiller dispersion level. The presence of aggregated particles exhibits a negative effect on the tensile properties of nanocomposites.","PeriodicalId":42458,"journal":{"name":"Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49488317","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

Experimental Study of the Effect of Curing Mode on Concreting in Hot Weather 高温条件下养护方式对混凝土性能影响的试验研究

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2021-08-31 DOI: 10.18280/rcma.310408

N. Bakir

{"title":"Experimental Study of the Effect of Curing Mode on Concreting in Hot Weather","authors":"N. Bakir","doi":"10.18280/rcma.310408","DOIUrl":"https://doi.org/10.18280/rcma.310408","url":null,"abstract":"Most developing countries have hot climate, ordinary jobsites characterized by reduced of human resources, equipment and infrastructures. The objective of this article is to make an experimental study of the influence of the hot climate such as that of Algeria, on the different properties of concrete in the fresh state, such as excessive water evaporation from the concrete surface, increased demand for water, increased slump loss corresponding to additional water on job-site, higher plastic shrinkage cracking and difficulty in controlling air content. At the hardened state, we could mention a reduction of strength at 28 days, decreased durability resulting from cracking at long-term period. To show the problems linked to concreting under these conditions and to present the appropriate solutions concrete or mortar can withstand the conditions in which it is implemented. Thus, negative effects caused principally by hot weather concreting motivated the choice of the such study. The research experimental work conditions in which the cementitious matrix was kept concerned two different environments, namely hot and dry climate conditions (t = 40°, h = 0%) alike the climate of the region of M'sila., and that of a medium with a hot and humid environment (t = 40°, h = 100%). The output of the investigation demonstrated the crucial role of the cure method in hot regions. The comparison of results for a reference concrete kept in air without any curing measures with two curing types simulating hot weather environment of the region M’sila was undertaken. These obtained outcome results were discussed based on the influence of climatic conditions to conclude procedures for hot weather concreting and suitable cure methods.","PeriodicalId":42458,"journal":{"name":"Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42539837","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