International Research Journal of Engineering and Technology (IRJET) Volume: 09 Issue: 09 | Sep 2022
www.irjet.net
e-ISSN: 2395-0056 p-ISSN: 2395-0072
REPLACEMENT OF CEMENT WITH FLY ASH AND STEEL FIBER IN RIGID PAVEMENT Imtiyaz Ahmad Shah1, Er. Sonia2 student at Desh Bhagat University ,deppt. Of civil Engineering at Desh Bhagat University punjab ---------------------------------------------------------------------***--------------------------------------------------------------------where fly ash is produced as a by product. Environmental Abstract - In India, major part of electricity is produced 2proffesor
1M.tech
threats include Air pollution, water pollution and particularly shortage of land for the dumping of that fly ash have taken place by using this coal. In India there is the worst condition for dumping coal. The outcome of Air that comes from coal and lignite that are used in power plants, as the result being light becomes airborne that causes health Problem. The important here is that when it reaches in the atmosphere it cause depletion of Ozone layer. Now to overcome from this problem the best choice is that , this waste material has to be used in other works. In India, there is problem of dumping area for dumping fly ash as majority of electricity is generated from thermal power stations. Full supply generation of fly ash is estimated to be 154 million tonnes in 2001 to 2012 . To work on this problem, although fly ash is used as landfills but now fly ash is used as replacement material for cement, also in pavements, base blocks etc. Fly ash can be used in large quantities in embankment fills and in replacement of aggregate. In India the artificial aggregates are not used widely, because of their high cost and easy availability of natural resources .Menakanda in 2008, found that fly ash aggregate produced by normal curing showed comparable result with the concrete produced by normal curing. In the investigation where the properties of fly ash aggregate which are produced by cold bounded technique and that are compared with natural gravels. As the concrete which is made out of these techniques is good idea to replace it with other materials. The effect of using fly ash in industrial buildings are somehow very1representative job as it will have a tremendous change in the universe. Fly ash can be used in different ways, as a partial replacement of cement in construction industry. As fly ash is light, it can be also used as lightweight course aggregate artificially. The method by which artificial aggregate is formed is known as polarization. The composition of fly ash concrete depends upon the different proportions of cement and formation of light weight concrete. It is so much influenced that it is using directly as concrete, in construction industry. The design and construction due to fly ash is very much economic as it reduce the weight of concrete and thus reduces the overall weight of the structure. Because the unit weight of normal concrete is much more than fly ash concrete. Concrete is very weak in tension. To overcome this tension reinforcement is used in concrete. But this reinforcement is confined to some place of structure. To
from thermal power plants. These thermal power plants use different types of fuels for combustion. During combustion of coal as a fuel in these thermal power plants, a by product namely fly ash is produced. Indian coal has highest ash content as compared to coal found in other countries. There are nearly 85 thermal power plants in India which uses coal as source for power generation and thus produces a large amount of fly ash. This fly ash is disposed in soil, which in turn causes a lot of environmental problems. To overcome this disposal of fly ash into the soil, it can be used in concrete by partially replacing with cement. Because the chemical composition of fly ash and cement is almost identical.
The main objective of this report is to analyse the behavior of M20 grade concrete with mix design 1:1.48:2.74 and with 0.48 water cement ratio. Here cement was partially replaced by 10%, 20%, 30% of fly ash of F- class by weight. As concrete shows cracks abruptly when undergoing tension. So to overcome this problem and to enhance the flexural strength of concrete, steel fibers were used. The steel fiber of hook type in percentage of 0.5%, 1%, 1.5% were used to produce M20 grade concrete. Aspect ratio of steel was used as 50. Compression strength test, flexural strength test, split tensile test were performed according to guidelines of Bureau of Indian Standards. The tests were co related with results of normal concrete. Due to addition of steel fiber and fly ash Compressive strength, flexural strength, split tensile strength has increased due to pozzolonic action of fly ash and strong bond formation of steel fiber. The highest value of compressive strength and flexural strength was achieved, when cement was replaced by 10% of fly ash and with addition of 1.5 % of steel fiber. Split tensile strength achieves its highest value at 10% of flyash and 1 % of steel fiber. Due to addition of fly ash, workability starts increasing.
Key Words: fly ash ,steel fibre, bitumen 1.INTRODUCTION The impact of crushed stone aggregates, extraction of the source that are formed in many parts of the country and has created a lot of problems in the environment. It included the loss of forests, noise, dust blasting, vibration and pollution hazards. In India 70% of electricity is generated from thermal power plants by using coal. From
© 2022, IRJET
|
Impact Factor value: 7.529
|
ISO 9001:2008 Certified Journal
|
Page 342