Development of Advanced Masonry Structures with Utilization of Alternative Thermal Insulating Materials

2014 ◽  
Vol 897 ◽  
pp. 113-116
Author(s):  
Jiri Zach ◽  
Jitka Peterková ◽  
Martin Sedlmajer ◽  
Azra Korjenic
Keyword(s):  
Thermal Insulation ◽  
Raw Materials ◽  
Construction Materials ◽  
Masonry Structures ◽  
Building Structures ◽  
Insulation Layer ◽  
Material Resources ◽  
Thermal Insulating ◽  
Competitive Strength ◽  
Energetic Demand

There has been increased effort for achieving enhanced properties of brickwork for external cladding of buildings, in particular as regards thermal insulation. This trend is caused by various factors, while the most important one is general aiming at reduction of energetic demand of buildings (within EU connected with the Regulation of the European Parliament and of the Council 2010/31/EU) and aiming at reduction of energetic demand of production of construction materials and building structures. The price of the products themselves is also important, because it determines their competitive strength in the market. One of the ways of development of thermal insulation brickwork with enhanced end-used properties with low price and minimal demands for material resources is use of secondary raw materials with low value of thermal conductivity. The paper describes possibilities of using granulated PUR material manufactured from water PUR foam used for production of thermal insulation form-pieces with integrated insulation layer.

Investigation of Thermal Insulation Materials Based on Easy Renewable Row Materials from Agriculture

2011 ◽  
Vol 335-336 ◽  
pp. 1412-1417 ◽  
Author(s):  
Jiri Zach ◽  
Jitka Peterková ◽  
Vít Petranek ◽  
Jana Kosíková ◽  
Azra Korjenic
Keyword(s):  
Thermal Insulation ◽  
Building Materials ◽  
Raw Materials ◽  
Building Construction ◽  
Materials Development ◽  
Insulation Materials ◽  
Thermal Insulating ◽  
Plastic Materials ◽  
Energy Consuming ◽  
Rock Wool

Production of building materials is mostly energy consuming. In the sphere of insulation materials we mostly see rock wool based materials or foam-plastic materials whose production process is demanding from material aspect and raw materials aspect as well. At present the demand for thermal insulation materials has been growing globally. The thermal insulation materials form integral part of all constructions in civil engineering. The materials mainly fulfill the thermal insulating functions and also the sound-insulating one. The majority of thermal insulation materials are able to fulfill both of the functions simultaneously. The paper describes questions of thermal insulation materials development with good sound properties based on natural fibres that represent a quickly renewable source of raw materials coming from agriculture. The main advantage of the materials are mainly the local availability and simple renewability of the raw materials. In addition an easy recycling of the materials after their service life end in the building construction and last but not least also the connection of human friendly properties of organic materials with advanced product manufacture qualities of modern insulation materials.

Monitoring and Analysis on Temperature for External Foam Glass Thermal Insulating System on Walls under Weathering Test

2011 ◽  
Vol 71-78 ◽  
pp. 3918-3924
Author(s):  
Zhi Rong Niu ◽  
Hou Ren Xiong ◽  
Zong Min Yu ◽  
Yi Xiang ◽  
Yi Ying Luo
Keyword(s):  
Thermal Insulation ◽  
Foam Glass ◽  
Interface Layer ◽  
Green Energy ◽  
Good Prospect ◽  
Insulation Layer ◽  
Thermal Insulating ◽  
Glass Insulation ◽  
Building Wall ◽  
Insulation Wall

The external foam glass thermal insulating system on walls has become a new thermal insulation wall system in china's building wall, It is green energy - saving building wall product with good prospect and used for wall thermal insulation of building. In this paper, real-time monitoring with thermal sensor and analysis on temperature for external foam glass thermal insulating system on walls by weathering test in Jiaxing area, and study on temperature distribution for each layer of walls. The experiment showed that, the external foam glass thermal insulating system on walls caused by foam glass insulation layer of adiabatic effect, Interface layer and thermal insulation layer of temperature difference between change significantly, existing 50 °C, which can cause greater temperature stress, and have certain effect of durability for external foam glass thermal insulating system on walls.

Evaluation of Structure Influence on Thermal Conductivity of Thermal Insulating Materials from Renewable Resources

1970 ◽  
Vol 17 (2) ◽  
pp. 208-212 ◽  
Author(s):  
Jolanta VĖJELIENĖ ◽  
Albinas GAILIUS ◽  
Sigitas VĖJELIS ◽  
Saulius VAITKUS ◽  
Giedrius BALČIŪNAS
Keyword(s):  
Thermal Conductivity ◽  
Thermal Insulation ◽  
Renewable Resources ◽  
Raw Materials ◽  
Raw Material ◽  
Barley Straw ◽  
Insulation Material ◽  
Insulating Materials ◽  
Insulation Materials ◽  
Thermal Insulating

The development of new thermal insulation materials needs to evaluate properties and structure of raw material, technological factors that make influence on the thermal conductivity of material. One of the most promising raw materials for production of insulation material is straw. The use of natural fibres in insulation is closely linked to the ecological building sector, where selection of materials is based on factors including recyclable, renewable raw materials and low resource production techniques In current work results of research on structure and thermal conductivity of renewable resources for production thermal insulating materials are presented. Due to the high abundance of renewable resources and a good its structure as raw material for thermal insulation materials barley straw, reeds, cattails and bent grass stalks are used. Macro- and micro structure analysis of these substances is performed. Straw bales of these materials are used for determining thermal conductivity. It was found that the macrostructure has the greatest effect on thermal conductivity of materials. Thermal conductivity of material is determined by the formation of a bale due to the large amount of pores among the stalks of the plant, inside the stalk and inside the stalk wall.http://dx.doi.org/10.5755/j01.ms.17.2.494

scholarly journals Influence of an Impregnation Treatment on the Morphology and Mechanical Behaviour of Flax Yarns Embedded in Hydraulic Lime Mortar

Fibers ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 30 ◽  
Author(s):  
Giuseppe Ferrara ◽  
Marco Pepe ◽  
Enzo Martinelli ◽  
Romildo Dias Tolêdo Filho
Keyword(s):  
Mechanical Response ◽  
Raw Materials ◽  
Construction Materials ◽  
Building Structures ◽  
Environmental Aspects ◽  
Sem Images ◽  
Plant Fibers ◽  
Hydraulic Lime ◽  
Pull Out ◽  
Hydraulic Lime Mortar

The increasing attention toward environmental aspects has led, also in the sector of construction materials, to the need for developing more eco-friendly solutions. Among several options, the employment of low energy raw materials appears as an efficient solution intended to enhance the sustainability of building structures. One of the applications moving in this direction is the use of plant fibers as a reinforcement in cement-based composites, hence named as natural textile reinforced mortar (NTRM) composites. Although representing a promising technique, there are still several open issues concerning the variability of plant fibers properties, the durability, and the mechanical compatibility with the mortar. This study aims at investigating the influence of an impregnation process on the thread’s morphology and on the mechanical response. Therefore, the geometry of dry and impregnated flax threads is identified by using scanning electron microscope (SEM) images analysis, and their mechanical response in tension is assessed. In addition, the fibers-to-mortar bond behavior is investigated by means of pull-out tests. The proposed results show that the impregnation procedure employed, although not improving the fibers-to matrix bond, leads to a standardisation of the threads morphology and reduces the thread’s deformability in tension, and paves the way for further investigations on a larger scale.

scholarly journals Foams based on industrial waste

2020 ◽  
Vol 12 (4) ◽  
Author(s):  
Nadezhda Manakova
Keyword(s):  
Thermal Conductivity ◽  
Thermal Insulation ◽  
Building Materials ◽  
Raw Materials ◽  
Foam Glass ◽  
Construction Materials ◽  
Economic Damage ◽  
Mining Areas ◽  
Wide Range ◽  
Microscopic Studies

Substantial volumes of tailings and waste rocks placed in dumps create serious environmental and economic damage in mining areas and adjacent territories. The development of technologies for processing waste into heat-insulating building materials (foam glass) will make it possible to reduce the burden on the environment, as well as reduce the cost of finished building products. The article substantiates the possibility of obtaining block foamed materials for the production of heat-insulating materials based on man-made waste using low-temperature technology. The author investigated the ways of improving the operational properties of foam silicates by introducing modifying additives (apatite-nepheline waste, fly ash). To obtain foam silicates based on silica-containing waste, a liquid glass composition was prepared, into which additives were introduced. After molding and drying, the samples were swollen. Physical, chemical and thermal properties of foamed silicate materials made of silica-containing raw materials were determined taking into account the requirements of GOST for thermal insulation construction materials. To determine the thermal conductivity coefficient, an ITP-MG 4 electronic thermal conductivity meter was used. Microscopic studies were carried out using a SEM LEO 420 scanning microscope. The author of the article proposes the optimal compositions and conditions for obtaining foam materials that meet the regulatory requirements for materials and products for building insulation. Foamed materials with density up to 0.55 g/cm3, strength 5.5 MPa, water absorption 15–22 %, thermal conductivity 0.09–0.104 W•m/K were obtained. Foam glass materials have a wide range of properties: non-flammable, environmentally friendly, have a long service life, and are not subject to mold deterioration. The obtained materials can be recommended for use as thermal insulation in the construction and reconstruction of industrial and civil buildings and structures.

scholarly journals EFFECTIVE HEAT-PROTECTIVE SYSTEM WITH THE USE OF THERMAL INSULATING SOLUTION OF REDUCED DENSITY

2019 ◽  
Vol 16 (3) ◽  
pp. 323-333
Author(s):  
L. Kh. Zagorodnyuk ◽  
D. A. Sumskoy ◽  
S. V. Zolotykh
Keyword(s):  
Heat Transfer ◽  
Thermal Insulation ◽  
Raw Materials ◽  
Field Tests ◽  
Ecological Effect ◽  
Laboratory Research ◽  
Low Density ◽  
Actual Problem ◽  
Transfer Resistance ◽  
Thermal Insulating

Introduction. The manuscript is devoted to the actual problem of thermal insulation of buildings and structures. The paper presents a developed low-density insulation solution with improved heatengineering characteristics. The aim of the work is to increase the efficiency of the heat-shielding system using a low-density heat-insulating solution.Methods and materials.The authors carried out tests at the site of heat engineering control of LLC «Intellect-service-ZBK-1» to determine the resistance to heat transfer of the enclosing structure.Results.The construction of the wall system consisting of the «Aerobel» D500 gas-silicate block (625×200×250 mm) and made on a low-density heat-insulating masonry mortar, as well as with the use of a heat-insulating mortar and a universal «Moutrical» energy-efficient coating allowed increasing actual reduced heat transfer resistance from 0.9 to 1.4 (m2 ·K) / W (by 36%).Discussion and conclusions.Laboratory research and field tests that meet the requirements of state standards and that develop low-density heat-insulating plaster demonstrate the low-density heatinsulating solution, which indicates the feasibility in thermal insulation of buildings and structures. The authors achieve special economic and ecological effect in connection with the use of local raw materials and waste production of expanded perlite sand.

Non-Traditional Thermal-Insulating and Rehabilitation Materials and their Hygrothermal Behaviour

2014 ◽  
Vol 1041 ◽  
pp. 59-62
Author(s):  
Jitka Peterková ◽  
Jiri Zach ◽  
Martina Reif ◽  
Azra Korjenic
Keyword(s):  
Energy Consumption ◽  
Thermal Insulation ◽  
Environmentally Friendly ◽  
Building Structures ◽  
Thermal Insulating ◽  
Optimal Function ◽  
Hygrothermal Behaviour

The development of non-traditional, thermal insulation plaster leads to the development of new eco-efficient materials suitable for insulation and rehabilitation of both existing and new building structures. Optimal function of these materials is then to reduce the energy consumption of buildings. This is beneficial from an environmental perspective. In addition, the development of new, promising, thermal insulation plaster was used innovative, environmentally friendly binders, such as substitution for energy intensive binder - cement. The paper presents the results of development of thermal insulation plaster and research in their hygrothermal behaviour.

Advanced, Thermal Insulation Materials Suitable for Insulation and Repair of Buildings

2013 ◽  
Vol 688 ◽  
pp. 54-59 ◽  
Author(s):  
Jitka Hroudová ◽  
Jiri Zach ◽  
Rudolf Hela ◽  
Azra Korjenic
Keyword(s):  
Thermal Insulation ◽  
Energy Intensity ◽  
Raw Materials ◽  
General Assumption ◽  
Building Construction ◽  
Co2 Production ◽  
Existing Building ◽  
Thermal Insulating ◽  
High Durability ◽  
Reduction Of Co2

The need of quality materials for thermal insulation and restoration of building constructions is without question an up-to-date subject. Considering the growing trend in the field of reduction of building construction energy intensity and reduction of CO2 production a general assumption at development of new thermal insulating plasters is the reduction of thermal conductivity and also reduction of density in mature conditions which results in general saving of raw materials necessary for production of 1m3 of applied plaster. Aim of the paper is to acquaint readers with results of research and development of "advanced" thermal insulating plasters obtained within the cooperation of Brno Technology University and Vienna Technical University. Main object of research works was a development of plasters that would show a very good ratio of thermal insulating and mechanical properties, low density, high durability and resistance to humidity and salt influences mainly in case of its possible applications within reconstructions of existing building objects with higher moisture content.

scholarly journals Using of Aerogel to Improve Thermal Insulating Properties of Windows

2018 ◽  
Vol 14 (1) ◽  
pp. 2-11 ◽  
Author(s):  
Denisa Valachova ◽  
Nada Zdrazilova ◽  
Vladan Panovec ◽  
Iveta Skotnicova
Keyword(s):  
Thermal Conductivity ◽  
Thermal Insulation ◽  
Building Structures ◽  
Insulating Materials ◽  
Insulating Material ◽  
Composite Systems ◽  
Thermal Insulating ◽  
Technical Requirements ◽  
Technical Properties ◽  
Insulating Properties

AbstractFor the best possible thermal-technical properties of building structures it is necessary to use materials with very low thermal conductivity. Due to the increasing thermal-technical requirements for building structures, the insulating materials are developed. One of the modern thermal insulating materials is so-called aerogel. Unfortunately, this material is not used in the field of external thermal insulation composite systems because of its price and its properties. The aim of this paper is to present possibilities of using this insulating material in the civil engineering - specifically a usage of aerogel in the production of windows.

scholarly journals Building a system for efficient use of resources in construction

2018 ◽  
Vol 193 ◽  
pp. 05014 ◽  
Author(s):  
Dmitry Kozhevnikov
Keyword(s):  
Raw Materials ◽  
Construction Materials ◽  
Resource Consumption ◽  
Construction Work ◽  
Material Resources ◽  
Resource Flows ◽  
Use Of Resources ◽  
Construction Firm ◽  
Proper Material

The article studies various aspects of building a system for efficient use of resources in construction and develops a model for estimating resource flows in construction. It has been proved that construction work cannot be organized without proper material resources: raw materials, construction materials, fuel, energy, pre-fabricated products, etc. It has been determined that the model for estimating the resource flows in construction should take into account the volume of resource consumption, i.e. resource consumption per unit of specific demand for their consumption, taking into account the total amount of resources consumed by a construction firm, and their cost.

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