Strength Behaviour of Iron Fillings in Concrete by Partial Replacement of Sand

Strength Behaviour of Iron Fillings in Concrete by Partial Replacement of Sand

Rajeswari V

M.E Structural Engineering,

M.A.M College of Engineering And Technology Tiruchirapalli, Tamilnadu

Abstarct:- The utilizing of iron fillings in concrete as a partial replacement of sand is attaining enormous significance now a days, mostly because of improvement in strength of concrete and environmental benefits. The aim of study is to assess the possibility of applying iron waste in different percentage (20%,25%,30%,35%) as fine aggregate replacement of sand to increase the strength of concrete. For this purpose, the mix proportion was designed as M20(1:1.5:3) for giving the compressive strength. To achieve the goal of study, laboratory experiments, compressive strength and flexural tensile strength were conducted to determine the influence of iron filling sand the strength of concrete.Higher content of iron fillings particle replaced in concrete increases workability of concrete. Using iron fillings with 35% of replacement of fine aggregate gives the higher strength than normal concrete mix. Addition of iron fillings in concrete increases the strength characteristics of concrete.

Keywords:- Iron waste, Fresh concrete test and Hardened concrete test.

1. METHODOLOGY

   • Collection of of materials

   • Testing of materials

   • Arriving mix design

   • Casting and curing of specimen

   • Testing of specimen

   • Result

   • Conclusion

2. MATERIALS AND TESTS

   1. CEMENT

      S.NO.	PROPERTY	RESULT	PERMISSIBLE LIMIT
      1	Specific gravity	3.1	3.1-3.15 (conforming to IS4031-1998 part 1)
      2	Normal consistency	31%	5-7mm (conforming toIS4031-1998 part 4)
      3	Fineness of cement (by 90 micron sieve)	4%	Not exceed 10% (conforming to IS4031-1998 part 3)

      S.NO.	PROPERTY	RESULT	PERMISSIBLE LIMIT
      1	Specific gravity	3.1	3.1-3.15 (conforming to IS4031-1998 part 1)
      2	Normal consistency	31%	5-7mm (conforming toIS4031-1998 part 4)
      3	Fineness of cement (by 90 micron sieve)	4%	Not exceed 10% (conforming to IS4031-1998 part 3)

      Ordinary Portland cement of 43 grade conforming to IS8112- 1989 is used for these experiment. The physical properties of cement is shown in the table1

      1. INTRODUCTION

         Concrete is the most widely used manmade construction material in world and is second to water as the most utilized substance on the planet.

         A major portion of this concrete volume is occupied by coarse and fine aggregate. The demand for aggregate is enormous in liberalization, privatization and globalization, and in the construction of important infrastructure projects like expressways, airports, Nuclear plants etc., The increased extraction of coarse and fine aggregate from the natural resources is required to meet this high demand. The increasing use of natural fine aggregate creates an ecological imbalance. Thus, partial replacement of fine

   2. SAND

      Table 1.Properties of cement

      Natural river sand from Cauvery river bed near

      aggregate is vital in construction industries. Aggregates are the most important constituents in the concrete mix that help in reducing shrinkage and impart economy to concrete production. Iron filings have some utility as a component in primitive gunpowder. In such a fine powdered form, iron can burn, due to its increased surface area.

      2. OBJECTIVES

      • To Understand the various application involved in iron fillings

      • To perform laboratory test that are related to compressive and tensile by use of iron fillings in concrete.

      • To improve strength characteristics of concrete

      with iron fillings.

      Trichy, Tamilnadu classified under zone III is used in this

      experiment. A physical property of fine aggregate is shown in the table.2.

      Table.2Properties of fine aggregates

      S.No	PROPERTY	RESULT	PERMISSIBLE LIMIT
      1	Specific gravity	2.6	2.5-3.0 conforming to IS 2386 part 3)

   3. COARSE AGGREGATE

      The size of the aggregate, particle shape, color, surface texture, density, impurity all of which have an influence on the durability of concrete should conform to IS:2386 (part-III).

      Table 3 Properties of coarse aggregate

      S.NO	PROPERTY	RESULT
      1	Specific gravity	2.68
      2	Abrasion value	23.1 %
      3	Impact value	25.4 %
      4	Water absorption	0.55 %

   4. IRON FILLINGS

   Table 4.Properties of Iron filings

   compressive strength test at different curing periods is provided in table. Through the laboratory observation it was perceived that early age strength is lower than the later age strength, because concrete gain its strength with the passage of time.

   Compressive strength = Breaking load(N)

   Area of cube(mm2)

   COMPRESSIVE STRENGTH

   COMPRESSIVE STRENGTH

   SI.NO	Properties	Values obtained
   1.	Specific gravity	3.12
   2.	Fineness modulus	3.17

   SI.NO	Properties	Values obtained
   1.	Specific gravity	3.12
   2.	Fineness modulus	3.17

   30

   25

3. DESIGN MIX 20

   5.1 The mix design of concrete is done based on properties

   ofcement, Fineaggregate, coarse aggregate,Water.The mix 15

   proportion for concrete is obtained as 1: 1.5: 3 and water cement

   ratio as 0.5. 10

4. EXPERIMENTAL INVESTIGATION 5

   25.47

   20.31 20.07 18.28
   		14.46

   20.31 20.07 18.28
   		14.46

   0

   0 20 25 30 35

   % OF REPLACEMENT

   1. COMPRESSIVE STRENGTH TEST

      The compressive testing machine was used to test the entire concrete strength at 7, 14 and 28 days respectively. The compressive strength for concrete grade M20 (1:1.5:3) were investigated for the control mix and while cement was partially replaced by Iron fillings. The result of

   2. SPLIT TENSILE STRENGTH TEST

      The tensile strength of concrete is one of the basic and important properties which greatly affect the extend and size of the cracking in structures. Moreover, the concrete is very weak in tension due to its brittle nature. Hence it is not expected to resist the direct tension. So, concrete develops crack when tensile forces exceed its tensile strength. Therefore, its necessary to determine the tensile strength of concrete to determine the load at which the concrete members may crack.

      SPLIT TENSILE STRENGTH = 2P

      DL

      SPLIT TENSILE

      STRENGTH

      SPLIT TENSILE

      STRENGTH

      3 2.09

      2

      1.69

      2.21

      1.87 2.027

      1

      0

      0 20 25 30 35

      % OF REPLACEMENT

5. CONCLUSION

From the results and discussion it was concluded that,

• Higher content of iron fillings particle replaced in concrete increases workability

  of concrete.

• Using iron fillings with 35% of replacement of fine aggregate gives the higher strength than normal concrete mix.

• Addition of iron fillings in concrete increases the strength characteristics of concrete

REFERENCE

1. Ahmed S. Ouda, Hamdy A. Abdel-Gawwad The effect of replacing sand by iron slag on physical, mechanical and radiological properties of cement mortar, Received 14 December 2014; revised 1 April 2015; accepted 22 June 2015.

2. Chetan Khajuria, Assistant Professor, Rafat Siddique, Senior Professor, Use of Iron Slag as Partial Replacement of Sand to Concrete, June2014.

3. Festus Adeyemi Olutoge, Michael Attah Onugba and Amana Ocholi, Strength Properties of Concrete Produced With Iron Filings as Sand Replacement, Received 5th October 2016 Accepted 21st November 2016 Published 2nd January 2017.

4. Hivam Tiwari, Anubhav Rai, Y.K. Bajpai, Effect of Partial Replacement of Sand by Iron Ore Tailings on the Compressive Strength of Concrete, Dec-2017.

5. IS 456-2000: Plain and Reinforced Concrete, Bureau of Indian Standard (BIS), New Delhi.

6. IS 10262-2009: Recommended guide lines for concrete mix design, Bureau of Indian Standards (BIS), New Delhi.