National Conference on Emerging Trends in Engineering Technology NCETET 2021

Abstract : In this paper, an area efficient multiplier architecture is presented. The architecture is based on Ancient algorithms of the Vedas, propounded in the Vedic Mathematics scripture of Sri Bharati Krishna Tirthaji Maharaja. The multiplication algorithm used here is called Nikhilam Navatascaramam Dasatah. The multiplier based on the ancient technique is compared with the modern multiplier to highlight the speed and power superiority of the Vedic Multipliers. Key Words: Digital Multiplier, Nikhilam algorithm.

I. INTRODUCTION

Utilization of industrial waste products in concrete has attracted attention all around the world due to the rise of environmental consciousness. Accumulations of stockpiles of Tyres are dangerous because they pose a potential environmental concern, fire hazards and provide breeding grounds for mosquitoes that may carry disease. Tyre pile fires have been an even greater environmental problem.

Tyre pile fires can burn for months, sending up an acrid black plume that can be seen for dozens of miles. That plume contains toxic chemicals and air pollutants, just as toxic chemicals are released into surrounding water supplies by oily runoff from Tyre fires. In order to prevent the environmental problem from growing, recycling Tyre is an innovative idea or way in this case. Recycling Tyre is the processes of recycling vehicles Tyres that are no longer suitable for use on vehicles due to wear or irreparable damage (such as punctures).

Tarun have reported that the compressive strength of rubberized concrete can be improve when fine aggregate was fully replaced by fine crumb rubber. He also indicated that if the rubberParticles have rougher surface or given a pretreatment, the better and improved bonding may develop with the

Surrounding matrix, and that may result in higher compressive strength.

Piti el outlined that crumb rubber responses were found to denote greater flexibility andToughness with larger deflection at peak load, longer post-peak load responses and higher fracture energy. Waste Tyres are a tremendous problem throughout the world. It is hardly surprising that in many countries it has been deduced that the best option is to simply burn them in cement kilns. At least in this way, the reasoning goes, some of the energy invested in the Tyre is reclaimed.

II. INDIAN TYRES INDUSTRY:

TABLE – 1
GENERAL DETAILS

Source: Indian rubber industry statistics

III. APPLICATIONS OF WASTE TYRES IN CIVIL CONSTRUCTION

• Tyre rubber in concrete and mortars
  Research on cement-based products modified with Tyre rubber – such as concrete and mortar – has been carried out for many years in order to examine the potential utilisation of waste Tyres in concrete production. Waste Tyres have been used to partially replace the aggregates in mortars and concrete. Tyre rubber can be used to produce workable concrete for specific applications, provided that adequate selection processes are undertaken – including the amount, gradation and shape of Tyre particles. This section deals with the properties of either mortar or concrete modified with waste Tyre rubber.

IV. CASE STUDY

In the present study, effect of crumb rubber as fine aggregate replacement on the compressive strength of   concrete having mix proportions of 1:1.31:1.14   was   investigated. The percentages of replacements were 0%, 10 %, 20% and30%by weight of fine aggregate. Tests were performed for compressive strength or all replacement levels of crumb rubber at different curing periods (7-days & 28-days).

V. CONCLUSIONS

We can say that for 1m³ M20 grade of concrete consumption of fine aggregate is 775.96 kg. Here in specimen M-3 we replace fine aggregate by 24.62 kg of crumb rubber for 1m³M20 grades of concrete. So, we can say that up to 15% foundry sand utilized for economical and sustainable development of concrete. Uses of crumb rubber in concrete can reduce the harmfulness to the environment and produce a ‘greener’ concrete for construction. An innovative supplementary Construction Material is formed through this study.

REFERENCES:

• [1]Aiello, M. A., and Leuzzi, F. (2010), “Waste Tyrerubberized concrete: Properties at fresh and hardened state.” Journal of Waste Management, ELSEVIER, 30,1696-1704.
• [2]Batayneh, M. K., Marie, I., and Asi, I. (2008),“Promoting the use of crumb rubber concrete indeveloping countries.” Journal of Waste Management,ELSEVIER, 28, 2171-2176.
• [3]Egyptian Code Committee 203, (2003), “Experimentalguide for testing of concrete materials.” Part 3 of theEgyptian code of practice for the design andconstruction of reinforced concrete structures.
• [4]Eldin, N. N., and Senouci, A. B. (1993), “Rubber-Tyreparticles as concrete aggregate.”Journal of Material inCivil Engineering, ASCE, 5(4), 478-496.