Abstract
As we know that Foam concrete has been successfully used and it has gained popularity due to its lower density than normal concrete. Globally the construction activities are rapid and using huge amount of fine aggregate and cement. Due to continuous usage of large amount of sand and cement we are creating natural imbalance by CONTINUOUS mining of sand, lime etc., from natural resources, which causes many natural hazards and become threat to humans. As a responsible citizen of world everyone think to stop the usage of sand and cement in huge quantity for infrastructural activities. Fly ash is one alternative solution as a partial replacement of sand and cement with Alccofine. In this investigation we are replacing fine aggregate with fly ash and cement with Alccofine by usage of Using additive materials in foam concrete which provides not only workability, strength but also reduce overall cost. As reducing the quantity of sand and cement in foam concrete we conserve Green House effect and also other raw materials used for cement. Foam concrete produced with uniform distribution of air bubbles thoughout the mass of concrete. The density of foam concrete is a function of the volume of foam added to the slurry and the strength decreases as decrease in densities. This experimental investigation was designed for density of 800 kg/m3. This study was compiled in determination of workability, plastic density, water absorption and compressive strength of foam concrete. The test specimens has been casted and tested at the age of 7,14 and 28 days.
Highlights
All over the world different types concretes are using in construction activities like nominal concrete, light weight concrete etc
Traditional concrete has a density varies from 2300 to 2400 kg/m3, The foam or light weight concretes are classified into several types founded on their densities like low-density foam concrete 300-600 kg/m3 which is normally used for thermal lining purpose and whereas medium-density foam concrete 800-1200 kg/m3 which is generally used foe non-structural elements and high-density foam concrete 1200-1800 kg/m3 used as structural elements like lintels, small beam sections etc., while light weight concrete has a density ranging from 300kg/m3 to 1800kg/m3
K Muthusamy et al [3] concluded that compressive strength of foam concrete reaches its optimum at 30% replacement of sand with quarry dust in preparation of foam concrete, by this we can avoid cost in disposal of waste materials and protect the environment
Summary
All over the world different types concretes are using in construction activities like nominal concrete, light weight concrete etc. Light weight concrete is using rapidly for modern constructions, because it can be produced with different densities and without coarse aggregate. Foam concrete is a new type of light weight building material which possesses incredible resistance against fire, sound and thermal. Foam concrete having low modulus of elasticity and high fluidity which improves workability and easy molding even foam works are thin or complex. The strength of foam concrete decreases as water - cement ratio increases, so always maintain ideal water - cement ratio that is in between 0.4 to 0.8 with binder material. K Muthusamy et al [3] concluded that compressive strength of foam concrete reaches its optimum at 30% replacement of sand with quarry dust in preparation of foam concrete, by this we can avoid cost in disposal of waste materials and protect the environment.
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