Research consider as design life of building (e.g.; 100

             ResearchProposal  Study on concrete withmanufactured sand      T.Tharshigan 140617K Supervisor: Dr K.Baskaran Senior Lecturer University of Moratuwa      12th January, 2018 Department of Civil Engineering Faculty of Engineering UNIVERSITY OF MORATUWA – SRILANKA    Table of content Introduction.

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.. 1 Significance ofresearch.

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… 2 Aims and objectivesof the research…..

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….. 2 Materials andMethodology.

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……. 3 Time schedule……………………………………………………………………………………… 4 Estimated cost……………………………………………………………………………………… 4 References…………………………………………………………………………………………… 5                                         CE4902A01140617K                                                                                                                                     IIntroduction  River sand is widely used as fine aggregate toprepare concrete. River sand is formed by weathering of rocks. It is a naturalprocess, long time take to form river sand from rocks. Nowadays amount of riversand will reduce. Therefore environmental authorities are taking actions toreduce consumption of river sand from river beds. When we consume the sandcontinuously, it makes serious threat to environment such as erosion of riverbed, loss of vegetation on river bank, lowering the water table, landslidesetc. If the consumption of river sand is restricted, other types of fineaggregates should be introduced instead of river sand. Manufactured sand is onetype of newly introduced fine aggregates. Manufactured sand is produced fromcrushed hard stones. In order to get the required particle size distributionthe coarser stone aggregates are crushed in primary and secondary crusher (jawcrusher and cone crusher). Crushed particles are washed to remove clayparticles mixed with fine particles.  Problem statement  Manufactured sand is washed before it is used toremove clay and silt particles from it. Therefore lots of fine particles frommanufactured sand are removed. That’s why there only relatively high dimensionparticles. When we mix the concrete by using this manufactured sand we can’tget a proper packing because there is no small particles to fill the smallgaps. These capillary voids are hazardous to structure. These voids help topenetrate into the structure and there will be corrosion of reinforcement.These activities affect the durability of structure.  Significance of research  When design a building the long period is consideras design life of building (e.g.; 100 years). But this design life may bereduced due to above stated problem. Nowadays using the manufactured sandinstead of river sand in construction field is becoming as general thing, so wehave to give proper solution to this problem.     CE4902A01 140617K                                                                                                                                                1Scope of the study  Find out any partial replacement material for thefine aggregate. This material has some properties to fill the capillary voidsin concrete and will not affect other properties concrete, but can improvecharacteristics of concrete.  Aims and objectives of the research ·        Test the relevant properties of aggregates ·        Develop the test mixes of concrete with partialreplacement material ·        Study the durability properties of concrete withmanufactured sand                                             CE4902A01 140617K 2 Materials and Methodology Materials ·        Cement Ordinary Portland cement (grade 43) will be used to prepare concrete.This type of cement is commonly in civil engineering construction field insrilanka. ·        Coarse aggregate Broken granite stones will be used as coarse aggregates to prepare concrete.The normal size of aggregates is 20mm ·        Fine aggregate Manufactured sand will be used as fine aggregates to prepare concrete.This manufactured sand will be washed before use in concrete. ·        Admixtures Superplastisizerwill be as admixture to improve the workability of concrete. ·        Fly ash Fly ash will be used as a partially replacementmaterial for fine aggregate. It will be mixed in proportion of 0%, 10%, 20%,30%, and 40% instead of manufactured sand. Fly ash is produced from thermalpower plant in Norochcholai, Srilanka. It is emitted as gases of burning coalduring the production of electricity.  Methodology In my research I will study the durability ofconcrete with manufactured sand through the permeability of concrete. Theresome test method to do the permeability test. They are water permeability test,water absorption test and rapid chloride ion penetration test. These testmethod will be used to carry out the experimental work. Concrete will be mixed with different proportion offly ash and cast 150×150×150 mm cube sample and 100 mm diameter cylinder sampleand cure it for 28 days. Cube samples will be used to check the compressivestrength, penetration and water absorption. Cylinder sample will have to cut as50 mm thick to use in chloride ion penetration test. Slump of concrete shouldbe checked before cast the cube for each proportion of fly ash. 0% fly ash mixsample will be considered as control sample. Each test should be carried outaccording to the following    CE4902A01 140617K                                                                                                                                                3standards water absorption test – BS 1881-122, water permeability test -DIN 1048 part 5 and rapid chloride ion penetration test – ASTM C1202 Time schedule  Work break down   Dec-17 Jan-18 Feb-18 Mar-18 Apr-18   May-18 Jun-18   Jul-18   Aug-18 Sep-18   Oct-18 Nov-18 literature rieview                 E                           E                                         material collection                 X                           X                                         Experimental work                 A                           A                                         Data analysis and report work                 M                           M                                                                                                                               Estimated cost                                                                                                                                  CE4902A01 140617K 4 References  1.    Martins Pilgis, Diane Gardner,Robert Lark. (2016, June 2). An Investigation into the use of manufactured sandas a 100% replacement for fine aggregate in concrete. Cardiff CF24 3AA, UK. 2.    Venkakatarama Reddy, B.V. (2012,January). Suitability of manufactured sand as fine aggregate in mortar andconcrete. Bangore 560 012. 3.    Huajian Li, Fali Huang, GanzhiCheng, Yongjiang Xie, Yanbin Tan, Lnxiang Li, Zhonglai Yi. (2016). Effect ofgranite dust on mechanical and some durability properties of manufactured sandconcrete. ScienceDirect,109(2016), 41-46. China. 4.                                              CE4902A01 140617K                                                                                                                                                5                                                                  CE4902A01 140617K 6