Utilization of Materials from the Production of Mineral Wool into Construction Materials

2014 ◽  
Vol 1000 ◽  
pp. 178-181
Author(s):  
Pavel Leber ◽  
René Čechmánek ◽  
Petr Bibora ◽  
Ivana Chromková ◽  
Martin Vyvážil
Keyword(s):  
Building Materials ◽  
Construction Materials ◽  
Mineral Wool ◽  
Fibre Reinforced Concrete ◽  
Concrete Blocks ◽  
Negative Effect ◽  
Glass Fibre Reinforced ◽  
Thin Walled ◽  
Material Utilization

This paper describes research on utilization of solid waste materials from mineral wool production. Aim of this research is verification of most suitable way of separated waste material utilization in building materials and determination of its maximal amount without negative effect on physical-mechanical and ecological characteristics of a final product. The research was focused on self-leveling mixtures, thin-walled glass fibre reinforced concrete products and vibropressed thin-walled shaped concrete blocks.

scholarly journals Application of headspace for research volatile organic compounds emitted from building materials

2018 ◽  
Vol 28 ◽  
pp. 01019
Author(s):  
Beata Kultys ◽  
Karolina Waląg
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Building Materials ◽  
Heating Temperature ◽  
Mineral Wool ◽  
Chromatography Method ◽  
Temperature Range ◽  
Volatile Organic ◽  
Different Temperatures

Headspace technique and gas chromatography method with mas detector has been used for the determination of volatile organic compounds (VOC) emitted from various building and finishing materials, such as sealing foams, mounting strips, paints, varnishes, floor coverings. The tests were carried out for different temperatures (in the temperature range of 60 to 180 °C) and the time of heated vials with tested materials inside. These tests were conducted to verify the possibility of use this method of determination the VOC emission. Interpretation of chromatograms and mass spectra allowed to identify the type of compounds emitted from the tested materials and the optimum time and temperature for each type of material was determined. The increase in heating temperature of the samples resulted in increase the type and number of identified compounds: for four materials the increase was in the whole temperature range, for others it was from 90 °C. On the other hand, emission from mineral wool was low in whole temperature range. 30-minutes heating of the samples was sufficient to identify emitted compounds for most of tested materials. Applying a longer time, i.e. 24 hours, significantly increased the sensitivity of the method.

scholarly journals Embodied Energy and CO2 Emissions of Widely Used Building Materials: The Ethiopian Context

Buildings ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 136 ◽  
Author(s):  
Woubishet Zewdu Taffese ◽  
Kassahun Admassu Abegaz
Keyword(s):  
Co2 Emissions ◽  
Building Materials ◽  
Construction Materials ◽  
Developed Countries ◽  
Embodied Energy ◽  
Policy Makers ◽  
Coarse Aggregates ◽  
Human Habitat ◽  
Wide Range ◽  
Concrete Blocks

Buildings use a wide range of construction materials, and the manufacturing of each material consumes energy and emits CO2. Several studies have already been conducted to evaluate the embodied energy and the related CO2 emissions of building materials, which are mainly based on case studies from developed countries. There is a considerable gap in cases of developing countries regarding assessment of embodied energy and CO2 emissions of these building materials. This study identified the top five most used construction materials (cement, sand, coarse aggregates, hollow concrete blocks, and reinforcement bars), which are also prime sources of waste generation during construction in the Ethiopian building construction sector. Then, what followed was the evaluation of the embodied energies and CO2 emissions of these materials by examining five commercial and public buildings within the cradle-to-site lifecycle boundary. The evaluation results demonstrated that cement, hollow concrete blocks (HCB), and reinforcement bars (rebars) are the major consumers of energy and major CO2 emitters. Cumulatively, they were responsible for 94% of the embodied energy and 98% of the CO2 emissions. The waste part of the construction materials has inflated the embodied energy and the subsequent CO2 emissions considerably. The study also recommended several strategies for the reduction of embodied energy and the related CO2 emissions. The research delivers critical insights into embodied energy and CO2 emissions of the five most used building materials in the Ethiopian construction industry, as there are no prior studies on this theme. This might be a cause to arouse awareness and interest among the policy makers and the wider public to clearly understand the importance of research on this crucial issue to develop national energy and CO2 descriptors for construction materials, in order to take care of our naturally endowed, but yet fragile, human habitat.

THEORETICAL APPROACH TO DETERMINATION OF ACOUSTIC PROPERTIES OF BUILDING MATERIALS

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Lukáš Fiala ◽  
Robert Černý
Keyword(s):  
Theoretical Approach ◽  
Urban Areas ◽  
Building Materials ◽  
Construction Materials ◽  
Well Being ◽  
Acoustic Properties ◽  
Solid Matrix ◽  
Sound Waves ◽  
Acoustic Load

The presence of high level of acoustic load especially in urban areas is becoming a serious problem in the present. In order to protect people against adverse effects of audio noise on health and personal well-being in buildings located in such areas, convenient construction materials with sophisticated geometric arrangement should be used. Bearing structures of new houses in the Czech Republic are widely made of different types of brick blocks. Such brick blocks consist of solid matrix and cavities designed in an optimized geometrical way in order to assure better thermal and hygric properties. Previous studies dealing both with acoustic properties in an empirical way and with the theoretical aspects of acoustic attenuation in building materials were not very numerous. Nevertheless, they gain constantly in importance with increasing acoustic load of the buildings surroundings. In this paper, a theoretical approach for the determination of acoustic properties, which is convenient for the description of sound waves propagation in building materials, is introduced.

scholarly journals The Use of Reftinskaya State District Power Plant Fly Ash in the Production of Building Materials and Products

2020 ◽  
Author(s):  
Fedor Kapustin ◽  
Vladislav Ufimtsev ◽  
Andrey Vishnevsky ◽  
Irina Fomina ◽  
Alexey Kapustin ◽  
...  
Keyword(s):  
Fly Ash ◽  
Power Plant ◽  
Building Materials ◽  
Natural Radionuclides ◽  
Construction Materials ◽  
Physical And Mechanical Properties ◽  
Slag Removal ◽  
Ash Removal ◽  
Composition Properties

The system of dry ash–slag removal at the Reftinskaya state district power plant which provides capture, storage and shipment of fly ash to the consumers is considered in this study. The results of determination of chemical and phase composition, physical properties, melting temperature and activity of natural radionuclides of ash which is form during burning of stone coal of Ekibastuz basin are presented. Ash is acidic, superfine and refractory one with a low content of combustible substance. As to composition and properties it satisfies the requirements of Russian Standard no. 25818 and ships to consumers under Technical Conditions 5717–004–79935691–2009. The results of laboratory tests and industrial production of building materials and products on the basis of ash of Reftinskaya state district power plant are presented. It is shown that ash is used in the production of Portland cement, heavy and cellular autoclave concrete, dry mixes and can also be used as part of fly ash non-fired and agloporite gravel, ceramic bricks. The features of their production, basic physical and mechanical properties of building materials and products are described. It is shown that the introduction of a new system of dry ash removal at the state district power plant contributes to the expansion of directions and increase in the volume of ash recycling. Keywords: Reftinskaya state district power plant, dry ash removal, fly ash, composition, properties, use, construction materials and products

scholarly journals THE HYGIENIC ASSESSMENT OF THE WORKING ENVIRONMENT IN INDIVIDUAL OCCUPATIONS IN BUILDING ORGANIZATIONS

2018 ◽  
Vol 97 (12) ◽  
pp. 1203-1209 ◽  
Author(s):  
Olga I. Kopytenkova ◽  
Z. Sh. Tursunov ◽  
A. V. Levanchuk ◽  
O. V. Mironenko ◽  
N. M. Frolova ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Health Risk ◽  
Work Experience ◽  
Building Materials ◽  
New Technologies ◽  
Mineral Wool ◽  
Working Environment ◽  
Dust Particles ◽  
Health Work

Introduction. The development of the construction industry is accompanied by the use of new technologies and building materials. Materials based on mineral wool (MW) became to be widely used. The article presents the results of the study of working environment factors and the determination of the safe for health work experience based on the health risk calculation for workers in contact with MW. Material and methods. To quantify the air pollution of the working area at the construction site, samples were taken using an aspirator and a dust meter. An absorption method using a spectrophotometer was used to determine the chemical composition of the dust. Statistical analysis and mathematical modeling were carried out using a standard software package Microsoft Excel, STADIA. Results. A table for the rapid health risk assessment of workers in contact with MW was developed. The risk of health loss is determined as “High” (R = 11.3). Discussion. Working conditions under the performance of heat-insulating works at facades cladding with the use of MW are classified as harmful (class 3.2) on the dust content in working zone air. In the course of the study, coarse dust and fine dust were found in the air. The data on the change of the dust concentration depending on air humidity, the concentration of dust particles of different dispersion at different distances from the place of work is presented. The chemical composition of dust is presented, the presence of heavy metals is established. Dependences for the determination of safe for health work experience under the influence of the various concentration of dust and the duration of contact are constructed. Сonclusions. On the basis of the research to improve the legal support in the field of occupational health and safety, a number of activities for workers engaged in work with the use of MW are proposed.

scholarly journals Analytical Study on Reinforced Concrete Beam With Carbon, Steel and Glass Fibers

2021 ◽  
pp. 708-712
Author(s):  
Muthamil Priyatharshini G ◽  
Rama Devi K
Keyword(s):  
Reinforced Concrete ◽  
Carbon Steel ◽  
Concrete Beam ◽  
Glass Fibers ◽  
Construction Materials ◽  
Reinforced Concrete Beam ◽  
Fibre Reinforced Concrete ◽  
Steel Fibre Reinforced Concrete ◽  
Glass Fibre Reinforced ◽  
Preliminary Study

Reinforced concrete mostly used in construction materials in the world. Fibre reinforced concrete in which small and discontinuous fibres are dispersed commonly. Fibre reinforced concrete used in fibres may be in different materials like carbon, steel and glass fibres etc. In addition of these fibres increases the compressive strength, tensile strength, flexural strength, and impact strength of concrete. carbon fibre reinforced concrete (CFRC) containing fibres of 1.5% and 0.2 of poisons ratio and steel fibre reinforced concrete (SFRC) containing fibres of 1.5% and 0.21 of poisons ratio and Glass fibre reinforced concrete (GFRC) containing fibres of 1.5% and 0.2 of poisons ratio. The results that comparing normal beam with fibre beam results. Its type and dimensions are selected based on preliminary study using ANSYS Software.

scholarly journals On the importance of desiccant during the determination of water vapor permeability of permeable insulation material

2020 ◽  
Vol 172 ◽  
pp. 14003
Author(s):  
Thibaut Colinart ◽  
Patrick Glouannec
Keyword(s):  
Water Vapor ◽  
Building Materials ◽  
Wood Fiber ◽  
Construction Materials ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Diffusion Resistance ◽  
Insulation Material ◽  
The Impact

Water vapor permeability of building materials is usually measured using dry cup test according to the ISO 12572 standard. For this test, suitable adsorbing desiccant should be used to provide stable low vapor pressure conditions within the cup and, thus, to ensure the good accuracy of the measurement. In this work, different adsorbing desiccants mentioned in the ISO 12572 standard are tested for measurements performed on wood fiber insulation. For each experiment, relative humidity is monitored inside the dry cup. The results indicate that 0 %RH is not reached inside the dry cup and boundary condition is not always stable for highly permeable construction materials, depending on the adsorbing desiccants. The impact of these observation is evaluated on the determination of water vapor diffusion resistance factor and compared to other sources of uncertainties.

scholarly journals DEVELOPMENT OF LIME BASED, LOAD-BEARING MATERIALS FOR WALL CONSTRUCTION

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Fin O'Flaherty ◽  
Faraj Khalaf ◽  
Vincenzo Starinieri
Keyword(s):  
Building Materials ◽  
Construction Materials ◽  
Base Material ◽  
Energy Criterion ◽  
Embodied Energy ◽  
Hemp Fiber ◽  
Load Bearing ◽  
Hemp Fibers ◽  
Concrete Blocks ◽  
The Uk

Construction of buildings in the UK is traditionally done using building materials such as concrete blocks, bricks and less so, timber. Although timber is a sustainable product, concrete blocks and bricks require a lot of energy input during fabrication, concrete especially being a large producer of CO2 during its manufacture. Reducing energy consumption either domestically or industrially is an important part of achieving the UK Government’s legally binding commitment to reducing greenhouse gas emissions by at least 80% (relative to 1990 levels) by 2050. New, low embodied energy construction materials are urgently required to enable the construction industry to revolutionize and drastically decrease its carbon footprint. The constituents of the materials investigated were selected based on low embodied energy criterion. To achieve this, lime was selected as the base material with hemp (fibers and shives) and PVAc used as additives. Specially selected nanomaterials were used as fillers. The constituents were combined in a manner, which led to different materials being developed, all exhibiting different characteristics. One characteristic was strength (load bearing) to eliminate the use of timber studding during construction. The results show that the highest strengths were achieved by mixing 10 wt. % hemp fiber, 4 wt. % nanozinc oxide and 12 wt. % PVAc at a 0.4 W/L ratio, yielding 17.7 MPa in compression and 7.3 MPa in flexure.

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