Review on Experimental Study of HPC using Tertiary Blends of GGBS and Metakaoline

Concrete is mostly used construction material all over the world I view of its compressive strength, high mouldabilty, days and is being used in many prestigious projects such as Nuclear power projects, flyovers, and multi-storeyed buildings. Metakaolin (MK) or calcined kaolin, other kind of pozzolan, produced by calcination has the capacity to supplant silica fum eas an option material. In India MK can be created in extensive sum, as it is a result of kaolin mineral which has boundless demonstrated stores accessible in the nation. Ground Granulated Blast Furnace is a byproduct from the Blast furnace slag is a solid waste discharged in large amount by the iron and steel industry in India. These work at a temperature of around 1500 degree centigrade and are sustained with a painstakingly controlled blend of iron – mineral, coke and limestone. This slag is occasionally tapped off as a liquid fluid and on the off chance that it is to be utilized for the fabricate of GGBS it has been quickly extinguished in extensive volumes of water. Structural stability and economic considerations. It was found that in addition to improvement in strength, concretes with very low w/c or w/b ratios also demonstrated other improved properties, such as higher elastic modulus, high flexural strength, lower permeability, improved abrasion resistance, and durability. This is usefulfor HPC development.. HPC is the newly development in concrete. It has become more popular these days and is being used in many prestigious projects such as Nuclear power projects, flyovers, multistoried buildings. Metakaolin (MK) or calcined kaolin, other type of pozzolan, produced by calcination has the capability to replace silica fum eas an alternative material. In India MK can be produced in large amount, as it is a product of kaolin mineral which has wide spread proven reserves available in the country. Ground Granulated Blast Furnace is a byproduct from the Blast furnace slag is a solid waste discharged in large amount by the iron and steel industry in India.

This slag is occasionally tapped off as a liquid fluid and on the off chance that it is to be utilized for the fabricate of GGBS it has been quickly extinguished in extensive volumes of water.

Eva Vejmelkova, et al., (2010). "Elite cement with Czech Meta kaolin: Experimental examination of quality, strength and solidness attributes" Construction and Building Materials. . Alaa M. Rashad et.al.(2016): In this paper the outcomes gives that the compressive quality prior and then afterward being presented to lifted temperature as substance of MK incresased.. Then, GGBS was partially substituted with 2%, 4%, 6%, 8% and 10% mMK, by weight. Cement was partially replaced with 70% GGBS, by weight Then, GGBS was partially substituted with 2%, 4%, 6%, 8% and 10% mMK, by weight Kamaldeep Singh et.al.(2015): In conclusion, a comprehensive literature review was performed in order to gain insight into the key issues relevant Strengthening of Cement Concrete using Fly ash & Metakolin. In the study, These materials have been reduced the cement content and added strength much more than the prior situation. ,also it has made cement manufacture cheap and more eco-friendly C M Dordi et.al : In the present study, activation of GGBS has been carried out by further grinding granulated blast furnace slag. Such slag is known as microfine GGBS (MFGGBS).

From above we get results separately when MK partially replaced by cement or GGBS partially replaced by cement. Now in this project we are going to do mix design by using both at the same time MK and GGBS as a tertiary blend.

The study has been divided into various parts: In the first part, the material characterization of the recycled aggregates as per Indian standards was conducted. the crushed unprocessed aggregates were found. To survey all the useful material in the market To collect all the important data Method of data collection Sampling design Method of data analysis Specification:-

• Grade of Concret = M60

• Purpose :- Prestress concrete t be used in Bridge Decks

• Equipment :- On site batching Plant

• Retantion :- 30 min

• Mix to be transported by tower crane

• RCPT values less than 100 coulomb

• Target strength at 28 days 70 Mpa

• Exposure condition sever

• Early strength criteria 30Mpa in 3 days

1] Casting of beams, Columns, Cylinder There were multiple tests to be carried out in order to determine different performance parameters such as mechanical and durability parameters.To study the mechanical performance it is decided to conduct compressive strength tests on cubes at ages of 7, 14, 28 and 56 days. It is further decided to check the early strength development by conducting the 3 day.testing.Further part of mechanical performance will be checked by conducting the splitting tensile strength and flexure strength by casting cylinders and beams. 2] Testing of beams, Columns, Cylinder:- Compressive Strength There is a benefit of having concrete with a compressive strength in excess of the design strength. While maintaining a compressive strength of grade provides adequate strength, higher strength

produced in other performance criteria as a result of this increased strength are almost essential. The method for testing the compressive strength of concrete was taken from IS: 516.

Flexural strength is a very important characteristic of concrete. Concrete use can be defined by this test. Rapid Chloride ion Penetration Test (RCPT): This test technique was initially created by the Portland Cement Association, under are scan program paid for by the Federal Highway Administration (FHWA). The first test technique might be found in FHWA/RD-81/119, "Fast Determination of the Chloride Permeability of Concrete." Since the test strategy was created, it has been changed and adjusted by different offices and standard's associations.

• AASHTO T277, "Standard Method of Test for Rapid Determination of the Chloride Permeability of Concrete" • ASTM C1202, "Standard Test Method for Electrical Indication of Concrete's Ability to Resist Chloride Ion Penetration ―The test method involves obtaining a 100 mm (4 in.) diameter core or cylinder sample from the concrete being tested. A 50 mm (2 in.) specimen is cut from the sample. The side of the cylindrical specimen is coated with epoxy, and after the epoxy is dried, it is put in a vacuum chamber for 3 hours. The specimen is vacuum saturated for 1 hour and allowed to soak for 18 hours. It is then placed in the test device

To study how much percentage of cement partially replaced by using tertiary blend of GGBS and metakaolin .to achieve the Strength by using partially replacement of tertiary blend by MK Ang GGBS.

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Post Graduate Student Department of Civil Engineering, ICOER Pune, India