scholarly journals USING SECONDARY RAW MATERIALS IN LIGHTWEIGHT OPEN-STRUCTURE CONCRETE WITH GOOD UTILITY PROPERTIES

2019 ◽  
Vol 22 ◽  
pp. 94-98
Author(s):  
Martin Sedlmajer ◽  
Jiří Zach ◽  
Jan Bubeník
Keyword(s):  
Mechanical Properties ◽  
Lightweight Concrete ◽  
Raw Materials ◽  
Foam Glass ◽  
Acoustic Properties ◽  
Recycled Pet ◽  
Open Structure ◽  
Recycled Glass ◽  
Thermal Insulating ◽  
Glass Aggregate

The paper presents the results of research in lightweight concrete with open structure made using a lightweight porous foam-glass aggregate produced from recycled glass powder. The goal was to develop lightweight concrete. In order to achieve the best possible properties while reducing binder content, the concrete was reinforced with by-product fibres, which helped reduce the weight of the concrete while delivering satisfactory mechanical properties. In the paper are proposed lightweight concrete with open structure made using foam-glass aggregate. Mechanical, thermal-insulating and acoustic properties were determined on lightweight concrete. Designed concrete is only made of crushed lightweight foam-glass aggregate with a combination of Portland cement with the option of adding recycled PET fibres. The new concretes possess a very good ratio of thermal insulation to mechanical properties as well as good sound absorption.

scholarly journals Development of lightweight structural concrete with the use of aggregates based on foam glass

2021 ◽  
Vol 1205 (1) ◽  
pp. 012014
Author(s):  
J Zach ◽  
J Bubeník ◽  
M Sedlmajer
Keyword(s):  
Thermal Conductivity ◽  
Thermal Insulation ◽  
Lightweight Concrete ◽  
Foam Glass ◽  
Research Work ◽  
Acoustic Properties ◽  
Added Value ◽  
Glass Waste ◽  
Recycled Glass ◽  
Foamed Glass

Abstract Lightweight concretes are increasingly being used in the construction industry, either for the overall lightweighting of the structure itself, reducing material consumption for construction and thus CO2 emissions, or for specific reasons such as improving the thermal insulation properties of the structure or acoustic properties. Today, lightweight concretes with lightweight expanded aggregates (expanded clay, agloporite) are most commonly used. This paper deals with the production of lightweight concretes lightweighted with foamed glass-based aggregates. Foamed glass is a lightweight material characterised by a very good ratio of thermal insulation and mechanical properties. Foamed glass is made of approximately 90% recycled glass waste (mostly mixed), which cannot be used in any other way, as well as water glass and glycerine. When concrete is lightened with foamed glass, these concretes achieve unique properties while conserving primary aggregate resources, avoiding landfilling of glass waste and efficiently using the waste material to produce lightweight concrete with higher added value. The paper discusses the possibilities of developing lightweight structural concretes using glass foam-based aggregates to achieve higher strength classes while reducing the weight and thermal conductivity of the concrete. As part of the research work, new types of lightweight concrete with a bulk density in the range of 1750–1930 kg/m3 and a thermal conductivity from 0.699 to 0.950 W/(m·K) were developed.

scholarly journals Tension mechanical properties of recycled glass-epoxy composite material

2012 ◽  
pp. 189-198 ◽  
Author(s):  
Jelena Petrovic ◽  
Darko Ljubic ◽  
Marina Stamenovic ◽  
Ivana Dimic ◽  
Slavisa Putic
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Material ◽  
Composite Materials ◽  
Modulus Of Elasticity ◽  
Epoxy Composite ◽  
Raw Materials ◽  
Mechanical Tests ◽  
Recycled Glass ◽  
Before And After

The significance of composite materials and their applications are mainly due to their good properties. This imposes the need for their recycling, thus extending their lifetime. Once used composite material will be disposed as a waste at the end of it service life. After recycling, this kind of waste can be used as raw materials for the production of same material, which raises their applicability. This indicates a great importance of recycling as a method of the renowal of composite materials. This study represents a contribution to the field of mechanical properties of the recycled composite materials. The tension mechanical properties (tensile strength and modulus of elasticity) of once used and disposed glass-epoxy composite material were compared before and after the recycling. The obtained results from mechanical tests confirmed that the applied recycling method was suitable for glass-epoxy composite materials. In respect to the tensile strength and modulus of elasticity it can be further assessed the possibility of use of recycled glass-epoxy composite materials.

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.

Development of Resource-Saving Cellular Glass Technology and Materials Based on it

2016 ◽  
Vol 870 ◽  
pp. 175-180 ◽  
Author(s):  
E.A. Yatsenko ◽  
V.A. Smolii ◽  
B.M. Goltsman
Keyword(s):  
Power Plant ◽  
Bending Strength ◽  
Lightweight Concrete ◽  
Foam Glass ◽  
Thermal Power ◽  
Thermal Insulating ◽  
Cellular Glass ◽  
Power Plant Ash ◽  
Slag Waste ◽  
Plant Ash

The advantages and drawbacks of a modern thermal insulating material – cellular glass (foam glass) – and the use of manmade waste (in particular, thermal power plant ash-slag waste) in its synthesis were described. The results of studies into the development of composites and temperature-time synthesis modes of effective energy-saving cellular glass and materials based on it were shown, including the experimental samples of insulating boards and blocks with density of not more than 500 kg/m3; experimental samples of porous granules for lightweight concrete and thermal insulating fillers with density of not more than 250 kg/m3 –. Technology of cellular glass using the Novocherkassk State District Power Plant ash-slag waste was described. The developed technological solutions allow setting physical and mechanical properties of materials based on cellular glass (density, porosity, thermal conductivity, compressive and bending strength) by varying the amount of ash-slag waste in its composition.

MAGNESIUM OXYCHLORIDE CEMENT-BASED COMPOSITE WITH FOAM GLASS USED AS LIGHTWEIGHT ADMIXTURE

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Adam Pivák ◽  
Šimon Marušiak ◽  
Martina Záleská ◽  
Zbyšek Pavlík ◽  
Milena Pavlíková
Keyword(s):  
Raw Materials ◽  
Foam Glass ◽  
High Strength ◽  
Mineral Admixture ◽  
Basic Material ◽  
Thermal Insulating ◽  
Magnesium Oxychloride ◽  
Magnesium Oxychloride Cement ◽  
Whole Life Cycle ◽  
Oxychloride Cement

In this paper, foam glass was used as an aggregate in magnesium oxychloride cement (MOC)-based mixtures. Magnesium oxychloride cement is known as a non-hydraulic, high-strength, and fire-resistant binder that can bond large amounts of miscellaneous fillers. In comparison with Portland cement, MOC has a lower environmental impact over its whole life cycle. The purpose of this paper is to modify thermal and hygric properties of MOC-based composites using lightweight mineral admixture, namely foam glass, and hydrophobic agents. The raw materials were analyzed by XRF spectroscopy and their basic properties characterized. The MOC composites were by their basic material, mechanical, thermophysical, and moisture properties described. Considerable improvement of thermal parameters of MOC composite modified with the foam glass and obvious action of surface hydrophobic agent as moisture barrier were observed. The resulting thermal-insulating, lightweight MOC composite with suitable mechanical properties can be used in the construction of thermal insulation surfaces and envelopes, ceiling or wall panels, reducing the energy consumption of buildings.

Effect pf Thermoplastic Polymer Waste (PET) in Lightweight Concrete

2013 ◽  
Vol 795 ◽  
pp. 324-328
Author(s):  
M.A.M. Daud ◽  
M.Z. Selamat ◽  
A. Rivai
Keyword(s):  
Mechanical Properties ◽  
Lightweight Concrete ◽  
Raw Materials ◽  
Building Construction ◽  
Thermoplastic Polymer ◽  
Polymer Waste ◽  
Acoustic Insulation ◽  
Insulation Wall ◽  
Strength Constraints ◽  
High Reflection

Contruction concrete that use of insulation wall in building construction faces some problems such as having high weight, very reflective sound, heat transfer (the effectiveness of heat conductivity) incompetence and mechanical properties (strength) constraints. The sounds which impinge the wall cannot be absorbed efficiently but instead gives high reflection. This causes some noise of high echo in a room. So a good acoustic insulation must be efficient in absorbing the sound. This project proposes lightweight concrete as a replacement for insulation wall. This lightweight concrete will be developed using thermoplastic polymer waste which is recycled plastic bottles, sand, water, and cement. This research used thermoplastic polymer waste which is PET (Polyethylene Terephthalate) material as the reinforcement material to replace small gravel in lightweight concrete. All its composition percentage of raw materials was divided into different samples composition. Its composition determines the performances of the samples in density, porosity and mechanical properties.

Possibilities of Binding Recycled Glass in Production of Advanced Building Materials

2016 ◽  
Vol 865 ◽  
pp. 255-260
Author(s):  
Martina Reif ◽  
Jiri Zach ◽  
Vítězslav Novák
Keyword(s):  
Thermal Insulation ◽  
Building Materials ◽  
Lightweight Concrete ◽  
Raw Materials ◽  
Lightweight Aggregate ◽  
Waste Glass ◽  
Raw Material ◽  
Acoustic Properties ◽  
Transportation Engineering ◽  
Advanced Composite Materials

The use of secondary raw material resources for construction purposes currently has a great potential. Secondary raw materials obtained by recycling waste glass find use (among others) in the production of thermal and acoustic insulation, production of lightweight concrete mixes and also in transportation engineering e.g. in road reconstruction.The paper deals with the possibilities of binding lightweight aggregate based on waste glass powder and with the production of advanced composite materials with good thermal insulation and acoustic properties. This means cement, epoxy resin and bituminous matrix with the goal to develop advanced building materials that could find further use as, for example, thermal insulation materials.

scholarly journals Lightweight concrete based on crushed foam glass aggregate

2021 ◽  
Vol 1083 (1) ◽  
pp. 012038
Author(s):  
I V Bessonov ◽  
B I Bulgakov ◽  
A D Zhukov ◽  
V A Gradov ◽  
N A Ivanova ◽  
...  
Keyword(s):  
Lightweight Concrete ◽  
Foam Glass ◽  
Glass Aggregate

scholarly journals Mechanical Properties of Lightweight Concrete Produced with Expanded Glass Aggregate

2017 ◽  
Vol 9 (5) ◽  
pp. 500-506
Author(s):  
Deividas Rumšys ◽  
Darius Bačinskas ◽  
Edmundas Spudulis
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Lightweight Concrete ◽  
Normal Weight ◽  
Experimental Investigations ◽  
Concrete Mixtures ◽  
Density Relationship ◽  
Glass Aggregate ◽  
Relationship Of ◽  
Alkaline Corrosion

The present paper investigates experimental mechanical properties of lightweight concrete mixes produced with expanded glass aggregate. Different concrete mixtures (totally 12) from normal weight to extremely lightweight structural concrete have been made. The sand by its volume was replaced with the expanded glass. All specimens were tasted after 7 and 28 days of hardening to identify flexural and compressive strength. Density of concrete mixes ranged from 1458 to 2347 kg/m3, and the compressive strength of 40×40×40 mm cubes ranged from 40 to 103 MPa. As a result, strength and density relationship of lightweight concrete was obtained. The performed experimental investigations on freeze­thaw resistance and alkaline corrosion have shown good durability of the designed mixes.

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