MANUFACTURING POROUS CONCRETE BY AGGREGATING REMAINED CONCRETE AND ITS FUNDAMENTAL PROPERTIES

Preparation and properties of porous aerated concrete

INTRODUCTION Porous concrete, especially Aerated Autoclaved Concrete (AAC) was first developed by a Swedish engineer between the years 1920 and 1932 [1]. He was searching for a material with the properties of wood, but without the disadvantages of wood. Near the end of World War II, AAC became widely used. Vast areas of cities and industries lay in waste and tremendous rebuilding became necessa...

Polymer Impregnation of Concrete by Methyl Methacrylate and its Effects on Mechanical Properties and Corrosion of Steel in Concrete

    Freezing and thawing resulting from the ingression of water into concrete causes cracking or spalling. Corrosive ions such as chloride or sulfate penetrate the concrete surface and eventually reach the reinforcing steel. This causes the steel to corrode.     Because of the high maintenance and replacement costs, responsible officials should be increasingly concerned about the growing number...

Transport Properties of Concrete

In this paper the main transport processes that take place in concrete are described. For each process a brief introduction to the physical mechanism is developed by giving examples of how they can contribute to the deterioration of concrete structures by, for example, enabling salt to reach the reinforcement. An example of the practical use of the theory is taken from the design of a waste con...

Effects of Recycled Concrete Aggregates on Properties of Asphalt Concrete

Applications and Properties of Fibre Reinforced Concrete

In conventional concrete, micro-cracks develop before structure is loaded because of drying shrinkage and other causes of volume change. When the structure is loaded, the micro cracks open up and propagate because of development of such micro-cracks, results in inelastic deformation in concrete. Fibre reinforced concrete (FRC) is cementing concrete reinforced mixture with more or less randomly ...