Experimental Study on Partial Replacement of Fine Aggregate by using Agro Waste in PCC

DOI : 10.17577/IJERTCONV10IS09040

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Experimental Study on Partial Replacement of Fine Aggregate by using Agro Waste in PCC

1 Kalki E

Student, Department of Civil Engg, K.Ramakrishnan College of Technology, Trichy-12, india.

2 Keshikasri R

Student, Department of Civil Engg, K.Ramakrishnan College of Technology, Trichy-12, india.

3Dharshini R

Student, Department of Civil Engg, K.Ramakrishnan College of Technology, Trichy-12, india.

4A. Oorkalan,

Assistant professor, Department of Civil Engg, K.Ramakrishnan College of Technology, Trichy-12, india.

Abstract:- Partial replacement of fine aggregate by agro product. Agro waste are used for partially replacement of fine aggregate. This pape discuss a study on the use of agro waste as partial replacement of fine aggregate in PCC. When agro waste is added to the concrete the compressive strength of concrete is found to reduce marginally. However, This marginally reduction can obtain with applicable percentage of addition thereby satisfaction result can be achieved. It is also result in lower consumption of natural material in the manufacture process in concrete thereby resulting in environmentally friendly and cheaper.

Keywords; Agro waste, PCC,Fine Aggregate, Partial Replacement.

  1. INTRODUCTION

    Concrete is mixture of cement ,Fine Aggregate, Coarse Aggregate and Water in are all natural resource .This paper presents the studies of conducts strength of characteristic of PCC with agro waste of coconut rachis .cubes casting with % of 20,25,30 of fine aggregate with cement, sand, coarse aggregate. Compared with PCC cubes with standardized proportion. Increased consumption create as scarcity motivates us to look for alternate materials which are easily available in abundanceand economically better economically better and environmentally less polluted .Generally more study is needed for long term durability properties of this type of concrete.

    Fig 1 coconut rachis

    D. Water Cement Rachis

    Typically water cement ratio is used in different grades of concrete to bond the mixture it varies between 0.40 to 0.60.

    Table -1 Mix design ratio

    Cement(kg)

    Fine aggregate(kg/m3)

    Coarse aggregate(kg/m3)

    Water(lit)

    54

    21.92

    162.5

    24.3

    1

    1.5

    3

    0.45

    RACHIS

    Perentage (%)

    20

    25

    30

    kg

    1.35

    1.68

    2.01

    Table -2 Percentage of rachis

    1. Cement

  2. MATERIAL USED:

  3. PROPERITIES OF MATERIALS

    The commonly used cement is Portland Pozzolana Cement with grade 43.

    1. Sand

      It is a granular material which is loose and obtained from the crushing of quarry or if is also taker from the river.

    2. Rachis

      It is obtained from the coconut tree. We make it is dry state and grinded to fine aggregate

      Tests

      Coarse Aggregate

      Fine Aggregate

      Cement

      Rachis

      specific gravity

      2.8

      2.7

      3.15

      2.19

      Water absorption (%)

      1.07

      0.6

      3

      Abrasion (%)

      30

      Table-3 Properties of material

      1. Specific gravity test

        In this test materials are required to know the density of water in the material for getting good quality of materials.

      2. Sieve analysis

        It is also known gradation test, where it determines the aggregate particle by all size with given sample of distribution.

      3. Abrasion test

    In this test it measure the size of aggregate ,toughness of aggregate and resistance like crushing ,disintegration and degradation.

  4. PROPERITIES OF CONCRETE

    A. Fresh concrete test

    1. Vee bee consitometer

      It is test which measure the change a concrete of mass from one fine shape to another cylinder by means of vibrates

    2. Flow table test

    It is a method to find the consistency of fresh concrete and also identify workability moisture limits in the concrete.

    Table 4 Flow table test

    Table 5 Slump cone test

    % of rachis

    w/c ratio

    slump value(mm)

    20

    0.45

    139

    25

    0.45

    147

    30

    0.45

    168

    B. Hardened concrete test

    1. Compression test

      This test is which a specimen experiences the compressing force that enters upon the specimen from the opposite side. It will squash or crushed or smashed.

      Table 6 compression test for cube

      normal

      16.26

      22.29

      14 days(kg/m)

      28 days(kg/m)

      20% of rachis

      15.26

      20.96

      25% of rachis

      18.96

      26.28

      30% of rachis

      19.70

      28.28

      30

      25

      20

      15

      10

      5

      0

      Table 7 compression test for cylinder

      % of rachis

      % of flow

      20

      60

      25

      54

      30

      64

      C. Slump cone test

      It is also measure the consistency of workability of the concrete before it sets. It can also be identify the improperly mixed proportion of the batch. In this there are only three types values is taken in this test they are:

      • True slump

      • Shear slump

      • Collapsed slump

      Fig 5 Slump test

      normal

      15.77

      7 days(kg/m)

      20% of rachis

      15.63

      25% of rachis

      15.58

      30% of rachis

      15.74

      22.29

      16.26

      14th Day 28th Day

      Compressive

      strength(N/mm²)

      Fig 7 Conventional concrete for compressive strength

      20.96

      15.48

      30

      25

      Compressive

      strength(N/mm²)

      20

      15

      10

      5

      0

      14th Day 28th Day

      30

      25

      20

      15

      10

      5

      0

      18.93

      Compressive

      strength(N/mm²)

      Fig 8 20% of rachis for compressive strength

      26.28

      14th Day 28th Day

      Fig 9 25% of rachis for compressive strength

    2. Split tensile test

      It is also referred as Brazillian test is notch performed on 150mm iameter, 300mm long cylindrical specimen .It is given a diametric suppressive load along the total length until failure occurs.

    3. stress strain curve

    It is a relationship between stress and strain of the specimen where the load is gradually applied to measure the deformation from which stress and strain can be determined separately.

  5. CONCLUSION

    • It is fire resistance it can be use in rural housing

    • It has lesser strength concrete

    • It may be used partition wall ,Thermal insulation, Sound insulation ,floor finish etc.,

  6. REFERENCE

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