Epitoanyag - Journal of Silicate Based and Composite Materials最新文献_第6页

Effect of clay concentration on the mechanical properties and rheological behavior of ceramic slip 粘土浓度对陶瓷滑移体力学性能和流变特性的影响

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Epitoanyag - Journal of Silicate Based and Composite Materials Pub Date : 2022-01-01 DOI: 10.14382/epitoanyag-jsbcm.2022.19

Sahra Mahi, Labri Hammadi, N. Boudjenane

引用次数: 0

Compressive strength and Scheffe’s optimization of mechanical properties of recycled ceramics tile aggregate concrete 再生瓷砖骨料混凝土抗压强度及Scheffe力学性能优化

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Epitoanyag - Journal of Silicate Based and Composite Materials Pub Date : 2021-01-01 DOI: 10.14382/epitoanyag-jsbcm.2021.14

E. Ambrose, F. Okafor, M. Onyia

{"title":"Compressive strength and Scheffe’s optimization of mechanical properties of recycled ceramics tile aggregate concrete","authors":"E. Ambrose, F. Okafor, M. Onyia","doi":"10.14382/epitoanyag-jsbcm.2021.14","DOIUrl":"https://doi.org/10.14382/epitoanyag-jsbcm.2021.14","url":null,"abstract":"Ceramic industry generates a large amount of wastes which are presently not reused in any significant quantity. Reusing these wastes in concrete could solve the ceramic industry waste management problem and also lead to a more sustainable concrete industry. While the use of ceramic wastes as coarse aggregate has been extensively investigated, not much findings are available on its use as fine aggregate and there are presently no models for predicting the properties of ceramic wastes aggregate concretes. This study investigates effect of crushed recycled-ceramic tiles (CRT) fine aggregate content on compressive strength of concrete. Scheffe’s second degree polynomial models were also formulated for compressive strength, slump height and cost of CRT concrete. Results show that incorporation of CRT as fine aggregate improves the compressive strength of concrete and this increase is directly proportional to its content. Authors therefore recommend up to 100% replacement of conventional fine aggregate with CRT in concrete production. The formulated models could predict compressive strength, slump and cost of CRT concrete if the mix ratio is known and vice versa. Analysis of variance and normal probability plots of model residuals were used to test adequacy of the models, and the models were found to be adequate at 95% confidence level. With the model equations, sample optimization was carried out to obtain the most economical mix for certain predefined criteria and the results were promising. Several similar optimizations can be carried out using the formulated model equations for any desired criteria of the modeled responses.","PeriodicalId":11915,"journal":{"name":"Epitoanyag - Journal of Silicate Based and Composite Materials","volume":"17 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85277471","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: 6

Shear behaviour of silicate-based structural adhesives for timber 木材用硅酸盐基结构胶粘剂的剪切性能

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Epitoanyag - Journal of Silicate Based and Composite Materials Pub Date : 2021-01-01 DOI: 10.14382/EPITOANYAG-JSBCM.2021.12

Dániel Csanády, Olivér Fenyvesi

{"title":"Shear behaviour of silicate-based structural adhesives for timber","authors":"Dániel Csanády, Olivér Fenyvesi","doi":"10.14382/EPITOANYAG-JSBCM.2021.12","DOIUrl":"https://doi.org/10.14382/EPITOANYAG-JSBCM.2021.12","url":null,"abstract":"In timber structures, many joints are constructed with polymer adhesives and industrial timber by-products also contain polymer resins in huge amount. Majority of these adhesives are artificial polymers with big environmental footprints and lots of them have a negative effect on human health. Some natural or silicate-based adhesives are available in the construction industry, but their heat or water resistance are poor. Some of these types of adhesives have evolved but compounds contain some artificial polymer, and the heat resistance is worse than silicate-based in general. In this article, water-resistance and heat resistance have been investigated in the case of silicate-based binders. In order to be a benchmark, a PVA based industrial timber adhesive (as reference) was also tested. The shear strength of the bonded joints was tested and compared under wet and hot conditions. Reference silicate-based binder was modified with other silicate, acids or alkalines. The effect of modifiers on the solubility of binders was also investigated. As a result it was stated, that reference binder has a higher strength under normal conditions, but the modified silicate binders have better performance under wet and hot conditions. The modifiers can increase the shear strength, ductility, and water-resistance without decreasing the heat resistance and also makes the material quality more uniform. The silicate binders make a rough bond surface, which can pass the forces effectively between the components of specimens.","PeriodicalId":11915,"journal":{"name":"Epitoanyag - Journal of Silicate Based and Composite Materials","volume":"16 1","pages":"72-82"},"PeriodicalIF":0.7,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75393307","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

Sintering of Silica-Alumina Granular Materials and its Catalytic Properties 二氧化硅-氧化铝颗粒材料的烧结及其催化性能

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Epitoanyag - Journal of Silicate Based and Composite Materials Pub Date : 2021-01-01 DOI: 10.14382/epitoanyag-jsbcm.2021.19

A. S. Apkarian, L. Gömze, J. F. Ibrahim, S. Kulkov

引用次数: 1

Durability against carbonation of concrete formulated with partial replacement of cement with marble powder 用大理石粉部分替代水泥配制的混凝土的耐碳化性

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Epitoanyag - Journal of Silicate Based and Composite Materials Pub Date : 2021-01-01 DOI: 10.14382/EPITOANYAG-JSBCM.2021.4

A. Merah, Benharzallah Krobba

{"title":"Durability against carbonation of concrete formulated with partial replacement of cement with marble powder","authors":"A. Merah, Benharzallah Krobba","doi":"10.14382/EPITOANYAG-JSBCM.2021.4","DOIUrl":"https://doi.org/10.14382/EPITOANYAG-JSBCM.2021.4","url":null,"abstract":"The first objective of this study is the use of marble waste powder as a partial replacement for cement (CEM I 42.5) in concrete. Furthermore, the phenomenon of carbonation significantly influences the durability of reinforced concrete structures, in this context, the second objective of this work is the study of the effect of accelerated carbonation on the durability of concretes formulated with cement. Containing marble powder with different percentages. To achieve this objective, four concrete mixes containing 0%, 10%, 15% and 30% marble powder as a cement replacement by weight were prepared. These concrete mixes were subjected to accelerated carbonation to study their durability against this phenomenon. The series of tests is carried out to study the effect of replacing 10%, 20% and 30% of the cement with marble powder on the depth of carbonation and the compressive strength and compare it with traditional concrete. The result of the present study indicates that the depth of carbonation increases with the increase in the rate of replacement of the cement with marble powder (10% to 30%) and that the resistance to compression decreases slightly with the increase in the replacement. the compressive strength of the concrete remains within the acceptable range recommended by the regulations used in Algeria.","PeriodicalId":11915,"journal":{"name":"Epitoanyag - Journal of Silicate Based and Composite Materials","volume":"69 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90394944","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

Kinetics and products composition of catalytic hydration of ethylene oxide in the presence of layered double hydroxides 层状双氢氧化物存在下环氧乙烷催化水化的动力学和产物组成

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Epitoanyag - Journal of Silicate Based and Composite Materials Pub Date : 2021-01-01 DOI: 10.14382/EPITOANYAG-JSBCM.2021.2

E. Butenko, E. Kapustina, A. Kapustin

引用次数: 1

Laboratory study of the effect of saturation degree on quality of fair-faced concrete surfaces 饱和度对清水混凝土表面质量影响的室内研究

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Epitoanyag - Journal of Silicate Based and Composite Materials Pub Date : 2021-01-01 DOI: 10.14382/epitoanyag-jsbcm.2021.17

K. Ajtayné Károlyfi, F. Papp

{"title":"Laboratory study of the effect of saturation degree on quality of fair-faced concrete surfaces","authors":"K. Ajtayné Károlyfi, F. Papp","doi":"10.14382/epitoanyag-jsbcm.2021.17","DOIUrl":"https://doi.org/10.14382/epitoanyag-jsbcm.2021.17","url":null,"abstract":"The concrete composition is one of the most significant factor influencing the quality of the fairfaced concrete surfaces. Practical experiences showed, that in case of architectural concrete slightly oversaturated concrete mixtures result in higher quality surfaces. In this work the surface quality of fair-faced concrete samples was examined depending on the saturation degree of the cement paste and the dimensions of the mould. The main evaluation aspects were the surface void ratio, the discoloration, the honeycomb and bleeding. The surface void ratio was obtained by using digital image processing techniques, while the other surface irregularities were examined using manual methods. The concrete samples were classified according to the Austrian and German guidelines. The effect of saturation degree on the mechanical properties of the concrete was also studied. Results show that the increase in saturation degree of cement paste improves significantly the surface quality, while the dimensions of the mould have a reduced, but also a positive effect. In the meantime, there is a decrease in the mechanical properties of the concrete.","PeriodicalId":11915,"journal":{"name":"Epitoanyag - Journal of Silicate Based and Composite Materials","volume":"65 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84479059","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

In-situ carbonization of natural zeolite-alumina composite materials incorporated sawdust 天然沸石-氧化铝复合材料的原位碳化研究

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Epitoanyag - Journal of Silicate Based and Composite Materials Pub Date : 2021-01-01 DOI: 10.14382/epitoanyag-jsbcm.2021.20

J. F. Ibrahim, A. S. Apkarian, M. Tihtih, S. Kulkov, L. Gömze

引用次数: 0

Effect of different supplementary cementitious materials and superplasticizers on rheological behavior of eco-friendly mortars 不同补充胶凝材料和高效减水剂对环保砂浆流变特性的影响

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Epitoanyag - Journal of Silicate Based and Composite Materials Pub Date : 2021-01-01 DOI: 10.14382/epitoanyag-jsbcm.2021.18

S. Safiddine, H. Soualhi, B. Benabed, A. Belaidi, E. Kadri

{"title":"Effect of different supplementary cementitious materials and superplasticizers on rheological behavior of eco-friendly mortars","authors":"S. Safiddine, H. Soualhi, B. Benabed, A. Belaidi, E. Kadri","doi":"10.14382/epitoanyag-jsbcm.2021.18","DOIUrl":"https://doi.org/10.14382/epitoanyag-jsbcm.2021.18","url":null,"abstract":"The drive towards using eco-friendly binders with increasing proportion of supplementary cementitious materials (SCMs) will lead to the development of more complex mixtures. However, the availability of fly ash (FA) would not cover future needs due to restrictions on the combustion of coal in power plants. Accordingly, the addition of limestone filler (LF) has an inherent advantage throughout the world of its availability in large deposits. The first main aim of this study was to determine the effect of high-volume LF used as Portland cement replacement with up to 60% on the rheological properties of cement mortar compared to the FA and the slag (BFS). Unlike FA and BFS, an increase in LF replacement reduced the rheological properties of the mortar. The relationship obtained between relative solid concentration and rheological properties of mortar with different SCMs was reasonable. The second aim of this study was to determine the rheological behavior of the mortar with different superplasticizer (SP) admixtures. Three SP types were utilized, ether-polycarboxylic modified (SP1), phosphonate modified (SP2) and new generation of polycarboxylate (SP3), with various dosages. The results show that, SP2 reduced the rheological properties better than SP1 and SP3 with dosages of less than 1%.","PeriodicalId":11915,"journal":{"name":"Epitoanyag - Journal of Silicate Based and Composite Materials","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72501598","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

Effects of poly-sal polymer and barite addition on rheological properties of algerian bentonite 聚硅聚合物和重晶石的加入对阿尔及利亚膨润土流变性能的影响

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Epitoanyag - Journal of Silicate Based and Composite Materials Pub Date : 2021-01-01 DOI: 10.14382/EPITOANYAG-JSBCM.2021.1

Ilyes Bachir Belmehdi, A. Mellak, L. Hammadi

引用次数: 2