ANALYSIS OF PROPERTIES OF CONCRETE USING DRIED BANANA PEEL POWDER AS ADMIXTURE OF PROPERTIES OF CONCRETE USING DRIED BANANA PEEL POWDER AS ADMIXTURE.”

Ingredients other than cement, water& aggregates that import a specific quality to either plastic(fresh)mix or the hardened concrete (ASTMC 496) is called concrete admixture. In this paper analysis of properties of concrete using banana peel as admixture is studied and verified the strength of concrete and temperature emitted due to chemical reaction to the normal Portland cement. As banana’s peel is rich in natural fiber and it is well known source of potassium. The flexural strength of concrete by using banana peel powder as admixture has increased, but considerable lesser compressive strength has increased. The percentage of transmission temperature and reduction time of temperature has decreased; hence it is clear that the exothermal reaction in concrete has been reduced by using dried banana peel powder as admixture.


Introduction
Banana's peel was one of the massive construction material used as an admixture in historical construction industries. As banana are popular most consumed and worldwide produced fruit, Because of removal of bananas peel, a significant amount of kitchen waste is generated [1] [2], which is very rich in fiber content, About 30-35% of total mass of fibers and carbohydrates. Mineral content in a banana peel is primarily consistent of potassium (78.10mg/g) and manganese (76.20mg/g). Other minerals present are sodium, calcium and iron at 24.30, 19.20 & 0.61mg/g respectively. Bananas peels has numerous application, for water purification, [3] to produce ethanol [4], cellulose, [5] lactase, [6] as fertilizer [7] and in composting. Although banana peel has these meritorious uses, these are considered as vegetable waste. As average mass of peel of banana is about 25 to 20% of total mass of banana, as 145million tones of Banana is consumed in worldwide hence amount of banana peel will be approximately 40million tones. The main drawback of banana peel is they undergo biodegradation quickly, as banana peel is fresh their co-efficient of friction on a linoleum surface was measured as just 0.07, But when these banana peel dries or bio-degrades its co-efficient of friction gradually increases. The author has experimented by keeping banana peel exposed to sunlight for 5days, which increases surface tension and co-efficient of friction. These peels are used as admixture to experience different results. As banana contains potassium this may help in enhancing reduction of temperature transmission and temperature absorbing properties of concrete.

Methodology
The banana peel is collected from different sources. As banana undergoes bio-degradation to avoid it peels are dried under sunlight for 2days. After complete drying the peels are powdered carefully. Obtained powder is packed in aluminum sheets or polythene cover helps in protecting powder from atmospheric moisture. While mixing the powder must be free from lumps.
An empty spaced cube with bottom, size of 10*10*10cmcasted using concrete with peel powder concrete and walls of thickness 1cm. Water of 100 0 c was filled in empty cube and the time consumed for reduction of temperature of water to 40 0 c were noted down. This gives the time consumed by cube to reduce inner temperature of 100 0 c of water to 40 0 c.
An empty cube casted by using peel powder concrete size 10*10*10 was inserted into another larger empty cube casted using plane cement concrete size of 15*15*10cm. 3cm sufficient space was left between two cubes was filled with Water of 100 c and top side of cube was closed by lid.
Water temperature was noted down after 8mins for 1,3,7,21,23 and 28 days of similar casted samples. The difference between the water temperature noted after 8min and the temperature at room temperature gives the amount of heat transmitted through the walls of inner cube. In fig (4) shows, the time taken by each sample to cool down from 100 0 c to 40 0 c. present study reveals that banana peel dried powder added concrete cube takes very less that is 33min 29sec & 37min 4sec comparatively to the normal concrete that is 34min 13 sec and 38min 48sec by M20 &M30 grade of concrete respectively for 28days, That is 2.46% and 3.78% time faster compared to normal concrete . Hence it says the temperature liberated during chemical reaction may be less by using peel powder as admixture. Hence banana peel can be used as admixture where temperature due to exothermal reaction place an important role to exothermal reaction place an important role and to be reduced un construction.