Design and Manufacturing of Concrete Mixing Machine

Abstract

A typical concrete mixer uses a revolving drum to mix the components. Mixing concrete is a combining process in which aggregate/gravels, grits, stone chips, cement and water is revolving up and down using radial or centrifugal force and mix simultaneously in a drum to make concrete. Concrete is a substance used for building and construction industry which is made by the mixture of cement, stone chips, and water. Now a day concrete mixing process using mixer machine can be time saving and applicable in every construction sites from small scale to large scale level. Small scale construction enterprises are owned by individual entrepreneurs, firms, and shareholders currently involved in fabrication of dam, irrigation and etc. and thus the mixer we produced considered as its efficiency is good, the machine performance and mixing time is 150-200kg with in 10min or 930 kg per hour. When using manual, the human power delivered to 50kg in 10 min mixing rate is minimized from relative to the power. Construction site workers expressed their feeling through questionnaire we provided them if their organization can get mixer machine with a reasonable price for the ease of mixing. According to their response most of the time they are mixing or producing concrete by the oldest method, which is using shovel. In this (oldest method) operation the time required to provide concrete is much greater than expected and uses more and more manpower. Therefore, to make the gap narrower we made a design and produced the machine with local materials, easily movable mechanisms, optional operation design that is using manual in operation with the machine when electric power is interrupted without the delay of mixing time and etc in order to produce homogenous mixture of concrete with very attractive and reasonable selling price of 24,844.215 Ethiopian birr. The machine was tested for its functionality and no unexpected or exaggerated problem is observed except machining speed variation than expected using three phase 2hp electric motorA Typical Concrete Mixer Uses A Revolving Drum To Mix The Components. Mixing Concrete Is A Combining Process In Which Aggregate/Gravels, Grits, Stone Chips, Cement And Water Is Revolving Up And Down Using Radial Or Centrifugal Force And Mix Simultaneously In A Drum To Make Concrete. Concrete Is A Substance Used For Building And Construction Industry Which Is Made By The Mixture Of Cement ,Stone Chips, And Water. Now A Day Concrete Mixing Process Using Mixer Machine Can Be Time Saving And Applicable In Every Construction Sites From Small Scale To Large Scale Level. Small Scale Construction Enterprises Are Owned By Individual Entrepreneurs, Firms, And Shareholders Currently Involved In Fabrication Of Dam, Irrigation And Etc. And Thus The Mixer We Produced Considered As Its Efficiency Is Good, The Machine Performance And Mixing Time Is 150-200kg With In 10min Or 930 Kg Per Hour. When Using Manual, The Human Power Delivered To 50kg In 10Min Mixing Rate Is Minimized From Relative To The Power. Construction Site Workers Expressed Their Feeling Through Questionnaire We Provided Them If Their Organization Can Get Mixer Machine With A Reasonable Price For The Ease Of Mixing. According To Their Response Most Of The Time They Are Mixing Or Producing Concrete By The Oldest Method, Which Is Using Shovel. In This (Oldest Method) Operation The Time Required To Provide Concrete Is Much Greater Than Expected And Uses More And More Manpower. Therefore, To Make The Gap Narrower We Made A Design And Produced The Machine With Local Materials, Easily Movable Mechanisms, Optional Operation Design That Is Using Manual In Operation With The Machine When Electric Power Is Interrupted Without The Delay Of Mixing Time And Etc In Order To Produce Homogenous Mixture Of Concrete With Very Attractive And Reasonable Selling Price Of 24,844.215 Ethiopian Birr. The Machine Was Tested For Its Functionality And No Unexpected Or Exaggerated Problem Is Observed Except Machining Speed Variation Than Expected Using Three Phase 2hp Electric Motor