The Influence of the Addition of Secondary Materials to the Thermal-Technical Properties of Filling Materials

2013 ◽  
Vol 688 ◽  
pp. 165-171
Author(s):  
Šárka Keprdová ◽  
Jiří Bydžovský ◽  
Klára Křížová
Keyword(s):  
Raw Materials ◽  
Filling Material ◽  
Technical Parameters ◽  
Secondary Raw Materials ◽  
Filling Materials ◽  
Thermal Insulating ◽  
Technical Properties ◽  
Materials Used ◽  
Wooden Structures ◽  
Insulating Properties

The filling material is made up of technical Cannabis shives, hydraulic or air binders and other components. They are suitable for use as fillers in horizontal or vertical wooden structures such as rack systems. Thanks to its good thermal-insulating properties the filler may be used as thermal insulating filler in walls or floors. The article describes the behaviour of Cannabis padding materials used as secondary raw materials as the replacement part of the joiner component. The use of secondary raw materials (such as fly ash, fluid or classical slag), however, is conditioned by the maintenance of the same, or at least the best possible thermal-technical parameters of the resulting filling material.

Development of New Advanced Plasters with Waste Fibers Content

2018 ◽  
Vol 276 ◽  
pp. 248-253
Author(s):  
Jiří Zach ◽  
Jitka Peterková ◽  
Vítězslav Novák
Keyword(s):  
Mechanical Properties ◽  
Building Materials ◽  
Raw Materials ◽  
Cellulose Fibers ◽  
Positive Influence ◽  
Point Of View ◽  
Pet Bottles ◽  
Thermal Insulating ◽  
Insulating Properties ◽  
Recycled Waste

The paper deals with the possibilities of using secondary raw materials in the development of new advanced lightweight plasters. It was about fibers from recycled waste materials (waste paper, PET bottles, tyres) and recycled insulation (stone wool). The aim of adding fibers to these lightweight building materials was improvement of mechanical properties, improvement thermal insulation properties and reduction of crack sensitivity. It can be stated, based on the evaluation of the selected measurements, that both types of cellulose fibers and fibers from recycled tyres had positive influence on the mechanical properties, namely in the case of compressive strength. From the point of view of thermal insulating properties, it can be said that only 2 types of fibers have reduced the value of the thermal conductivity. They were mixtures with stone fibers and with recycled tyres fibers. Both of these mixtures also showed the lowest average values of bulk density. Based on the carried out research works can be it concluded that the use of recycled tyres fibers show as optimal.

Experimental Measurements of the Selected Properties of AeroTherm

2013 ◽  
Vol 652-654 ◽  
pp. 1169-1172
Author(s):  
Radek Fabian ◽  
Filip Čmiel ◽  
Zdeněk Jaroň ◽  
Marketa Kozakova
Keyword(s):  
Experimental Measurements ◽  
Autoclaved Aerated Concrete ◽  
Thermal Insulating ◽  
Concrete Blocks ◽  
Aerated Concrete ◽  
Technical Properties ◽  
Supporting Base ◽  
Insulating Properties

The thermally insulating compound AeroTherm appeared on the market in recent times. The manufacturer determines its thermal insulating properties. The aim of this article is to verify thermal-technical properties of AeroThermu on the lining from YTONG (autoclaved aerated concrete blocks) that serves as the supporting base.

Experimental Research on the Properties of Secondary Raw Materials Resulting from the Recycling of Tyres

2020 ◽  
Vol 832 ◽  
pp. 29-38
Author(s):  
Marek Jašek ◽  
Barbora Hrubá ◽  
Filip Khestl ◽  
Petr Kurečka ◽  
Jiří Teslík
Keyword(s):  
Thermal Conductivity ◽  
Complex Analysis ◽  
Thermal Conductivity Coefficient ◽  
Raw Materials ◽  
Combustion Heat ◽  
Secondary Raw Materials ◽  
Textile Fibres ◽  
Thermal Insulating ◽  
Fire Properties ◽  
Fire Characteristics

The paper deals with the research on the properties of secondary raw materials resulting from the recycling of used tyres and their potential utilization for the production of construction insulations. Evaluation of the possibilities of utilization and a complex analysis has been executed on the basis of the defined basic physical, thermal-insulating and fire properties of the raw textile fibres examined. The results of the research on the material examined indicate possible exploitation of this potential material for the construction of environmentally-friendly objects. Thermal insulating parameters have been determined by the value of thermal conductivity coefficient λ. For measuring of thermal conductivity coefficient of fibres has been used the special laboratory device – the Cooling Box. Physical properties have been determined by microscopic examination and by laboratory measuring of fibres length, diameter, pour bulk and compressed bulk densities. Fire characteristics were determined during several fire tests of textile fibres. On the basis of performed fire test has been determined the combustion heat, flash point (FIT) and ignition temperature (SIT).

Verification of the Possibility of the Use of Secondary Raw Materials of Tubular Solar Panels as Fillers of Polymer Industrial Floors

2015 ◽  
Vol 729 ◽  
pp. 58-63
Author(s):  
Jana Hodná ◽  
Vit Petranek ◽  
Bozena Dohnalkova
Keyword(s):  
Czech Republic ◽  
Raw Materials ◽  
Solar Panel ◽  
Polymer Materials ◽  
Solar Panels ◽  
The Czech Republic ◽  
Secondary Raw Materials ◽  
University Of Technology ◽  
Materials Used ◽  
Secondary Materials

The article reports on a hot topic over the last few years and the issue of recycling and further use of secondary raw materials from the solar panels. Recycling of solar panels is very difficult and complicated. Secondary materials that recycling generated so far have not found a application and their using is still not fully resolved. The research conducted on Brno University of Technology, Faculty of Civil Engineering (BUT) now being developed polymer materials used for industrial floors. These materials were incorporated secondary materials as fillers. It was thus replaced by a filler made from natural materials, which the Czech Republic is still declining. In the following text, which builds on earlier publications describe the procedures and results of new tests, which were conducted on these fuels, which confirms the possibility of the use of glass from solar panel in industrial polymer flooring systems.

scholarly journals COMPARATIVE EVALUATION OF EDGE PENETRATION SEALING MATERIALS USED FOR RETROGRADE ROT CANAL TETH (LABORATORY STUDY )

2014 ◽  
Vol 10 (5) ◽  
pp. 30-32
Author(s):  
С. Токмакова ◽  
S. Tokmakova ◽  
Ю. Луницына ◽  
Y. Lunitsyna
Keyword(s):  
Comparative Evaluation ◽  
Filling Material ◽  
Glass Ionomer ◽  
Root Canals ◽  
Endodontic Surgery ◽  
Filling Materials ◽  
Retrograde Filling ◽  
Actual Direction ◽  
Materials Used ◽  
Sealing Materials

<p>Therapeutic endodontic treatment is not always possible for various reasons. There is need for methods of endodontic surgery, particularly retrograde filling. Actual direction is to study the efficiency of the use of a filling material for root canals of teeth roots. We have experimentally studied the apical mikropermeability filling materials «MTA ProRoot», «Trioksident», «Rutdent», «Biodentine», «Ketac Cem»; proven advantage calcium materials to glass ionomer cements. </p>

Application of Technical Hemp into the Structure of Cement-Chip Boards

2012 ◽  
Vol 587 ◽  
pp. 42-46
Author(s):  
Šárka Keprdová ◽  
Jiří Bydžovský ◽  
Tomáš Melichar
Keyword(s):  
Mechanical Properties ◽  
Synergistic Effect ◽  
Raw Materials ◽  
Construction Material ◽  
Physical And Mechanical Properties ◽  
Partial Substitution ◽  
High Price ◽  
Filling Material ◽  
Building Structures ◽  
Technical Parameters

Cement-chip boards are building elements that combine the advantageous properties of wood and cement. It is this synergistic effect which determines the versatile use in the building industry. The boards can be used in any place where the favourable properties of this construction material can fully be appreciated. The disadvantage of the cement-chip boards remains in their relatively high price. Reduction of the price and possible improvement of physical and mechanical properties can be achieved by partial substitution of the raw materials. The basic ingredients of the cement-chip board include the binding material (cement) and filler (wood). The filling material may be partially replaced by secondary raw materials or completely replaced by other herbal sources, such as technical hemp. As the individual components mutually influence each other and, as their effects may not only be added up (additive effect), but also mutually reinforced (synergistic effect), it is not so easy to determine the optimal recipe as it may seem at first sight. This article deals with the use of technical hemp shives as a replacement of filling component of the cement-chip boards. To evaluate the possibility of future use of the boards in building structures, the physical and mechanical properties were monitored. Special emphasis was placed on tests of flexural strength, modulus of elasticity and volume weight. The mixture must meet the technical parameters related to the cement-chip boards.

scholarly journals Experimental study on proportioning and properties of cemented filling material with a large mass ratio of construction demolition waste

2020 ◽  
Author(s):  
Yewu Bi ◽  
Weixin Chen ◽  
Yucheng Huang
Keyword(s):  
Raw Materials ◽  
Large Mass ◽  
Recycled Aggregate ◽  
Filling Material ◽  
Mass Ratio ◽  
Solid Mass ◽  
Demolition Waste ◽  
Aggregate Gradation ◽  
Filling Materials ◽  
Large Mass Ratio

Abstract Supply of cheap and abundant raw materials is a key factor in reducing the cost of cemented filling materials. To solve this problems of the high cost of cemented filling materials and insufficient sources of raw materials, an experimental study on cemented filling material with a large mass ratio of construction demolition waste was performed. A large amount of recycled aggregate of construction demolition waste was added to cemented material to prepare a high concentration slurry, from which the influences of aggregate/cement mass ratio, admixture/cement mass ratio, water/solid mass ratio, recycled aggregate gradation and mud content of recycled aggregate on slump, setting time and compressive strength of cemented filling material with a large mass ratio of construction demolition waste were analysed via the orthogonal test method and regression equation analysis. Finally, an industrial formula for cemented filling material with a large mass ratio of construction demolition waste was determined, and the mechanical and microscopic properties were analysed. The results indicate that the industrial formula with an aggregate/cement mass ratio of 3.0, an admixture/cement mass ratio of 1.5%, a water/solid mass ratio of 0.35, a recycled aggregate gradation of 40:30:15:15, a mud content of recycled aggregate of 0ཞ4% and a mass ratio of construction demolition waste to solid material of 75% exhibits the properties of rapid strength growth and high residual strength, and can be applied in underground coal mines conditions.

Environmental Assessment of Structural Elements from Secondary Raw Materials

2013 ◽  
Vol 649 ◽  
pp. 236-241
Author(s):  
Karel Struhala ◽  
Zuzana Stránská ◽  
Libor Matějka
Keyword(s):  
Environmental Assessment ◽  
Raw Materials ◽  
Assessment Methodology ◽  
Structural Elements ◽  
Structural Element ◽  
Life Cycle Assessment Methodology ◽  
Secondary Raw Materials ◽  
Thermal Insulating ◽  
University Of Technology ◽  
Structural Details

This paper deals with the environmental assessment of production of structural elements made of secondary raw materials developed by the Brno University of Technology, Faculty of Civil Engineering, with use of LCA (Life Cycle Assessment) methodology. Structural elements made of this material can be used in the building constructions as thermal insulating elements resisting high mechanical loads which could be used for minimizing the thermal bridges in structural details of buildings, such as the substructure below doors and windows, thermal insulation of the base of the wall, etc. This paper presents the identified environmental impacts of the prototype production of this structural element.

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.

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