International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar -2017
p-ISSN: 2395-0072
www.irjet.net
A study on properties of foamed concrete with natural and synthetic foaming agent Shibi Varghese1, Ashik M Ashok2, Atheena K Joseph2, Shaniyo Emmanuel2, Swathylekshmi O V2 1Professor, 2Student,
Dept. of Civil Engineering, Mar Athanasius College of Engineering, Kerala, India Dept. of Civil Engineering, Mar Athanasius College of Engineering, Kerala, India
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Abstract - Foamed concrete consists of cement, water, fine
aggregate and air voids. It is relatively homogeneous and do not contain coarse aggregate phase. Properties of foamed concrete depends on the type of binder and foaming agent used. Here two types of foaming agents are used – natural and synthetic. A partial replacement of binding material is done with silica fume which provides additional strength compared to foam concrete without silica fume. This paper which based on the foam concrete properties and preparation process analyses the research progress of silica fume effect on performance of foamed concrete. Key Words: Foamed concrete, soap nut, silica fume.
1.INTRODUCTION Foamed concrete consists of cement, water, fine aggregate and air voids. It is relatively homogeneous and do not contain coarse aggregate phase. Properties of foamed concrete depends on the type of binder and foaming agent used. Here two types of foaming agents are used – natural and synthetic. A partial replacement of binding material is done with silica fume which provides additional strength compared to foam concrete without silica fume. This paper which based on the foam concrete properties and preparation process analyses the research progress of silica fume effect on performance of foamed concrete. The focus of this project is to do an investigation on properties of foamed concrete with silica fume and identifying its mechanical properties . The impact of microstructure & its implication on development of strength, elastic modulus & transport properties in order to fully benefit from light weight properties is focused in this paper. Two different foaming agents are used and their hardened properties were measured. Outcomes showed that foaming agent type had a noticeable effect on mechanical properties. Foamed concrete is a new type of light weight high strength and energy saving building material widely used in construction industry. This paper which is based on foam concrete properties and preparation process analysis and also the research progress of blending materials, admixtures and fibers effect on the performance of foamed concrete, © 2017, IRJET
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Impact Factor value: 5.181
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puts forward the problem about development and application of foam concrete in current research.
2. CHARACTERISTICS OF FOAMED CONCRETE AND ITS PREPARATION PROCESS 1)Light weight: The density of foamed concrete is low than ordinary concrete about 50%-80%, and its apparent density is usually maintained at 300-1200kg/m³. Because of its low density and small load, the weight of today's construction can reduce weight about 25% whether its application on the inside(outside) wall or column structure, sometimes even reach 30%-40% of the overall quality of the structure. 2) Good heat-insulating property: Foamed concrete is a kind of heat preservation and insulation material which is mainly used in building wall and roof, and has high efficiency of energy saving. Its interior has many uniform pores which control the air in a large part and prevent from the cold and the heat exchanging. The thermal conductivity of the commonly used foam concrete is about 0.1W (K /m), which is 7 times less than that of the clay brick and 14 times less than that of the ordinary cement concrete. 3) High fire resistance and sound insulation: Foamed concrete is mainly composed of cement paste, aggregate, other inorganic materials (which don’t have the chemical characteristics of spontaneous combustion) and dispersed pores, so it has the good fire resistance. At the same time, because of the existence of many closed pores, the foam concrete has a good sound insulation performance. 4)Good seismic performance: The foamed concrete is of light weight, small density and small elastic modulus. It is a kind of porous structure with many closed bubbles. The foam concrete is a kind of building material with excellent seismic performance when it is subjected to the action of earthquake wave, which can diffuse and absorb the impact load. 5)Other performance: Because of the porous structure, foamed concrete has good frost-resisting property and corrosion resistance. The foam comes from foaming machine in the stirring process can play a role in reducing the water and lubricating. The foam concrete can use large quantities of industrial waste and other materials, which is not only conducive to the environmental protection, but also reduce the production cost.
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