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Preparation and Characterization of Sandwich Structured materials with Interesting Insulation and Fire Resistance

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Journal of Renewable materials 2022年第8期10卷 2029-2039页

作者： Haizhu Wu Jinxing Li Shouhu Bao Fuxian Yang Jun Zhang Hisham Essawy Guanben Du Xiaojian Zhou Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products Southwest Forestry UniversityKunming650224China Department of Polymers and Pigments National Research CentreCairo12622Egypt

A cellular material in the form of 3-layered sandwich structure material was prepared via sole use of mechanical stirring without any use of a foaming agent,while Tween-80 was employed as a foam stabilizer via a developed in-situ mold *** resulting structure displayed a good appearance with no visual *** 3-layered composition of the sandwish structure,“nonporous resin layer-porous foam layer-nonporous resin layer”,was examined in terms of the microstructure,density&density distribution,pulverization ratio,mechanical strength,insulation and flame retardant *** was indicated from the results that the bonding between the resin layer and foam layer was tight,while the tensile rupture always occurred in the porous ***,the density of the sandwich structure material was symmetrical with“saddle”distribution,and a uniform density for any given *** increase in the density at the interface layer provided a good interpretation for the tensile rupture never occurred at the *** brittleness resistance of the developed material was significantly improved,and the pulverization ratio was sharply decreased from 9.93%to 0.31%.The material acquired a thermal conductivity and limiting oxygen index(LOI)of 0.0241 W/m⋅K and 29.92%,respectively,indicating potential use of such materials broadly in fields of insulation and flame retardancy.

关键词： building materials tannin resin sandwich structure insulation fire resistance

Deep Learning-Based Swot Analysis in Construction and Demolition Waste Management

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Intelligent Automation & Soft Computing 2023年第5期36卷 1497-1506页

作者： R.Rema N.Nalanth Department of Civil Engineering Noorul Islam UniversityThuckalay629180TamilnaduIndia

Researchers worldwide have employed a varied array of sources to cal-culate the successful management of Construction and Demolition(C&DW).Limited research has been undertaken in the domain of Construction and Demoli-tion Waste Management(C&DWM)and consequently leaving a large gap in the availability of effective management *** to the limited time available for building removal and materials collection,preparing for building materials reuse at the end of life is frequently a challenging *** this research work Con-volutional Neural Network-Long Short-Term Memory(CNN-LSTM)is proposed to predict the number of waste materials that are obtained from a building at the end of its useful *** a result,an effective Waste Management(WM)plan has been established through SWOT *** results of the study reveal that,given fundamental building characteristics,it is possible to predict the number of materials that would be collected with high precision from a building after *** proposed deep learning models achieved an average R-squared value of 0.98 and a Mean Absolute Error of 18.1 and 20.14 better than existing methods such as random forest,CNN,and DBN(Data Bus Network).

关键词： Waste management deep learning building materials strengths weaknesses opportunities threats analysis

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福建建材

福建建材

作者：龚志丹

出版社：福建能源报业有限公司

本刊创刊于1982年。期刊宣传报道国家有关建设、建筑、建材行业的政策法规，反映相关行业的科技发展动态，先进的技术和管理经验，介绍新材料、新技术、新工艺、新装备的研究发展状况。栏目设有：发展论坛、试验研究、综合论述、标准与...

本刊创刊于1982年。期刊宣传报道国家有关建设、建筑、建材行业的政策法规，反映相关行业的科技发展动态，先进的技术和管理经验，介绍新材料、新技术、新工艺、新装备的研究发展状况。栏目设有：发展论坛、试验研究、综合论述、标准与检测、规划设计、工程应用、地基工程、路桥工程、市政工程、园林工程、施工技术、生产技术、能源与环保、机械设备、监理与管理、建设经济、工作研究等。

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Review of economic and environmental benefits of earthen materials for housing in Africa

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Frontiers of Architectural Research 2017年第4期6卷 519-528页

作者： Olumuyiwa Bayode Adegun Yomi Michael Daisiowa Adedeji Department of Architecture Federal University of Technology Akure Nigeria School of Architecture and Planning University of the Witwatersrand Johannesburg South Africa

Solutions to housing problems must deal with the issue of building materials - especially advancing those which lower construction cost and costs to the environment. This paper aggregates and reviews empirical evidences to show the advantages and disadvantages of earthen construction materials in terms of cost, energy and thermal properties. We reviewed 136 academic outputs from 17 African countries. Apart from a few studies that differ, literature concurs that earthen construction materials are generally cheaper, cleaner and more thermally comfortable. Notwithstanding the advantages, the level of uptake is presently low. Earthen materials＇ strength and durability are key limitations. We identify possible areas for future research and present specific recommendations that can promote the uptake of earthen materials for housing construction in African cities.

关键词： Housing building materials Sustainabitity Energy Thermal comfort,Africa

Efficiency of Structural materials in Sustainable Design

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Journal of Civil Engineering and Architecture 2014年第10期8卷 1260-1265页

作者： Ali Osman Kuruscu Zehra Canan Girgin Architecture Faculty Yildiz Technical University Istanbu134349 Turkey

The main aim of this paper is to investigate energy consumptions, CO2 emissions and costs during the production and life cycle of structural materials. The virgin and recycled metals as well as waste minerals such as fly ash, slag in concrete save energy consumption, CO2 emissions and costs. The importance and effectiveness of recycled materials will be statistically evaluated via energy consumption, carbon footprint, ultimate strength and their ratios. Embodied energy to ultimate strength or embodied carbon to ultimate strength ratios may emphasize the effectiveness of a sustainable material. The analyses in this study indicate the utilization of the recycled steel and C50 concrete with 50% fly ash or slag is the most efficient way of using sustainable materials.

关键词： CO2 building materials energy strength recycle.

Study the Attenuation Coefficient of Granite to Use It as Shields against Gamma Ray

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Detection 2016年第2期4卷 33-39页

作者： Laith Ahmed Najam Abdalsattar Kareem Hashim Hussein Abdulkareem Ahmed Israa M. Hassan Department of Physics College of Science University of Mosul Mosul Iraq Department of Physics College of Science Kerbala University Kerbala Iraq Department of Physics Faculty of Science University of Zakho Duhok Iraq

The present work investigates the linear and mass attenuation coefficients for gamma rays practically and theoretically by using spectroscopy gamma ray (UCS-20) and program (XCOM)) for various types of common use granite, and compares them with the lead because of its high blocking ability for this type of radiation. This paper concluded through linear and mass attenuation coefficients measurements that these coefficients decrease with increasing incident photons energy. Measurements also showed that the linear attenuation coefficients appropriate linearly with density while mass attenuation coefficients do not get affected.

关键词： Gamma Rays Attenuation Coefficient (Linear and Mass) building materials Sodium Iodide Detector

Production and Characterization of Pozzolan with Raw Clay from Burkina Faso

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Journal of Minerals and materials Characterization and Engineering 2016年第3期4卷 195-209页

作者： Mohamed Seynou Younoussa Millogo Lamine Zerbo Issiaka Sanou François Ganon Raguilnaba Ouedraogo Kalsibiri Kaboré Laboratoire de Chimie Moléculaire et des Matériaux UFR/Sciences Exactes et Appliquées Université Ouaga I Ouagadougou Burkina Faso Université Polytechnique de Bobo-Dioulasso UFR/Sciences et Techniques Bobo-Dioulasso Burkina Faso Laboratoire National de Batiment et de Travaux Publics Ouagadougou Burkina Faso

Four raw deposits clayey materials in Burkina Faso have been characterized using X-ray diffraction, infrared spectroscopy and ICP-AES to evaluate their suitability to be used as pozzolan in cement. The samples have been activated by thermal treatment at 730°C during 5 hours. The obtained metakaolin was investigated by means of complementary techniques for their use as pozzolan in building materials. Fineness, surface area and amorphousness of metakaolins were the dominant factors which influenced their pozzolan reactivity. The compressive strengths of blended specimens were slightly increased with metakaolins named MK1 and MK2 than the reference for the substitution of 20 - 25 wt%. This was due to the metakaolins’ pozzolan reactivity and their filler effects which promoted CSH formation and reduced pores in the specimens. MK1 and MK2 were suitable for replacement of Portland cement in the field of building materials.

关键词： Raw Clayey materials Characterization Metakaolin Pozzolan Reactivity building materials

Adoption of, the Palestine Green building Design Approach, with the Help of Checklist Tools

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Journal of Environmental Protection 2021年第1期12卷 49-74页

作者： Usama I. Badawy Abdelkhalek I. Alastal Muain Q. Jawabrah Raed A. Salha Engineering and Camp Improvement Department United Nation Palestine Geography and GIS Department Arts College Islamic University of Gaza Gaza Palestine Architecture and Planning Department Birzeit University Birzeit West Bank Palestine Geography and GIS Department Arts College Islamic University of Gaza Gaza Palestine

Nowadays our world is faced with various environmental problems. These environmental problems are caused by the increasing pollution in the world, increasing production and consumption of material goods. These problems have serious consequences for human health and also have a major impact on natural ecosystems. This paper discussed sustainable green building in terms of key principles for sustainable building, strategies and guidelines for sustainable green building, and steps for an integrated approach to green design. The study also looked at the status of green building and sustainability, as well as green building materials in Palestine. The study suggested a checklist to help assess the condition of buildings in Palestine and the extent to which they respond to the principles of sustainable green buildings, thus, contributing to help new and existing buildings to adopt a sustainable green building approach, in order to achieve the goals of sustainable green construction in terms of saving energy and resources and reducing waste, therefore, participating in preserving the environment and improving the quality of life.

关键词： Global Warming building materials Green building Sustainability Checklist for Green building

Material Expression of Architectural Emotion From the Perspective of Public Art

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Journal of Landscape Research 2017年第4期9卷 88-92,96页

作者： WANG Feng QI Han JI Xiang School of Architecture & Design China University of Mining and Technology Jiangsu Collaborative Innovation Center for building Energy Saving and Construing Technology

Architectural emotion, to a large extent, is reflected in the emotionalization of building materials. The exploration of the vitality and spiritual connotation of the building materials is a new direction of expressing architectural feelings. This paper explores the visual features and connotation of various building materials from the perspective of public art, with a view to understanding the characteristics of building materials and creating unique buildings with a strong character.

关键词： Public art building materials Emotional expression