Exploitation of limestone in brick making
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Gamal Saad Abdelhaffez
Abstract
In Egypt, large amounts of limestone dust are accumulated in running limestone quarries every year. Disposal of these wastes is a rapidly growing problem and causes certain serious environmental problems as well as health hazards. Therefore, research for utilizing these disposals is urgently needed. The main aim of this study is to investigate both physical and mechanical properties of brick specimens containing combinations of limestone dust and small amount of Portland cement as a binder for producing house building brick. Limestone dust and cement were mixed, humidified and molded by two methods, manual method and mechanical molding method. After demolding, the produced specimens were dried in air at room temperature for 28 days. The obtained values of water absorption, bulk density, slake durability index and compressive strength satisfy the Egyptian standard of fired clay building units for non-load bearing walls. The test results indicate that brick specimens contain 14 % cement which satisfy the requirements of building of non-load bearing walls in Egypt. The process undertaken can easily be applied in the working Egyptian brick plants using semi mechanization system. The positive use of these wastes converts them into useful products, saving natural resources and can alleviate the disposal and environmental problems.
Kurzfassung
In Ägypten werden jedes Jahr große Mengen von Kalkstein-Stäuben in den betriebenden Kalksteinbrüchen akkumuliert. Die Freisetzung dieser Abfälle stellt ein rapide anwachsendes Problem dar und verursacht schwerwiegende Umweltschäden sowie entsprechende Gesundheitsgefahren. Daher besteht ein dringender Forschungsbedarf zur Nutzung dieser Abfälle. Das Hauptziel der diesem Beitrag zugrunde liegenden Studie bestand in der Untersuchung der physikalischen sowie der mechanischen Eigenschaften der Ziegelproben, die eine Kombination als Kalksteinstaub und Portland-Zement als Binder bei der Herstellung von Ziegeln für den Hausbau enthielten. Der Kalksteinstaub und der Zement wurden mittels zweier Verfahren gemischt, befeuchtet und geformt, nämlich nach dem manuellen und dem mechanischem Verfahren. Nach dem Entformen wurden die so hergestellten Proben an Luft und Raumtemperatur für 28 Tage getrocknet. Die bestimmten Werte für die Wasserabsorption, die Gesamtdichte, den Index der Beständigkeit des gelöschten Kalkes und die Druckfestigkeit genügen dem ägyptischen Standard für feuerfeste Gebäude aus Lehmziegeln für nicht-lasttragende Wände. Die Versuchsergebnisse zeigen, dass die Ziegel mit 14 % Zement den Anforderungen für nicht-tragende Wände von Gebäuden in Ägypten entsprechen. Das angewandte Verfahren kann leicht in herstellenden ägyptische Ziegelfabriken unter Verwendung eines halb-mechanisierten Systems übertragen werden. Die positive Verwendung dieser Abfälle verwandelt sie in nützliche Produkte, dadurch werden natürliche Ressourcen geschont und die Entsorgungs- und Umweltprobleme vermindert.
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© 2015, Carl Hanser Verlag, München
Articles in the same Issue
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- Influence of the production process on the deformation and fatigue performance of friction drilled internal threads in the aluminum alloy 6060*
- Effect of quench and strain aging on the mechanical properties of low carbon microalloyed steels
- Effect of temperature on microstructure and mechanical behavior of diffusion bonded Armor 500 and AISI 1040 steels
- Analysis of industrial conditions during multi-stage cooling of C70D high-carbon steel wire rod
- Effect of cryogenic treatment on the microstructure and wear behavior of a T-42 tool steel
- Application of the response surface methodology in the ball burnishing process for the prediction and analysis of surface hardness of the aluminum alloy AA 7075
- The memory effect in polyolefinic products: A tool for confirming the steam sterilization process
- Neutron tomography in archaeology*
- Ultraschallprüfung von Betonbauteilen – laufzeitgesteuerte Gruppenstrahler mit Punktkontaktprüfköpfen
- Acoustic emission testing of surface roughness and wear caused by grinding of ceramic materials
- Electrochemical impedance spectroscopy of hardened compacted cemented soils at early curing stage
- Microstructure and pore fractal dimensions of recycled thermal insulation concrete
- Microstructure and tribological properties of electrolytic plasma nitrided high-speed steel
- Exploitation of limestone in brick making
- Effect of alkaline treatment on physico-mechanical properties of black rice husk ash filled polypropylene biocomposites
- Kalender/Calendar
- Kalender
Articles in the same Issue
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- Influence of the production process on the deformation and fatigue performance of friction drilled internal threads in the aluminum alloy 6060*
- Effect of quench and strain aging on the mechanical properties of low carbon microalloyed steels
- Effect of temperature on microstructure and mechanical behavior of diffusion bonded Armor 500 and AISI 1040 steels
- Analysis of industrial conditions during multi-stage cooling of C70D high-carbon steel wire rod
- Effect of cryogenic treatment on the microstructure and wear behavior of a T-42 tool steel
- Application of the response surface methodology in the ball burnishing process for the prediction and analysis of surface hardness of the aluminum alloy AA 7075
- The memory effect in polyolefinic products: A tool for confirming the steam sterilization process
- Neutron tomography in archaeology*
- Ultraschallprüfung von Betonbauteilen – laufzeitgesteuerte Gruppenstrahler mit Punktkontaktprüfköpfen
- Acoustic emission testing of surface roughness and wear caused by grinding of ceramic materials
- Electrochemical impedance spectroscopy of hardened compacted cemented soils at early curing stage
- Microstructure and pore fractal dimensions of recycled thermal insulation concrete
- Microstructure and tribological properties of electrolytic plasma nitrided high-speed steel
- Exploitation of limestone in brick making
- Effect of alkaline treatment on physico-mechanical properties of black rice husk ash filled polypropylene biocomposites
- Kalender/Calendar
- Kalender