self cleaning concrete-an ecofriendly thought

Self cleaning concrete

AN ECOFRIENDLY THOUGHT

M.VIGNESHWARAN II YEAR B.TECH CIVIL

presented by:

Abstract

• Sustainability is not only a word, it must be an attitude of the civil engineer.

• To achieve the sustainability self cleaning

concrete paves the way for the modern civil engineers.

Introduction

• Self cleaning or depolluting photo catalytic concrete,by the name itself it shows its affordability.• The name that it looks like futuristic ideas and some of us may think that it is impossible.• But it is practical now,many foreign countries are stick to the concrete for its unbelievable beneficial results.

Need for the self cleaning concrete

• Now a days other than any thing pollution plays main role in the mass destruction of environment.• Mainly air pollution • so as a civil engineer we need to make the solution. • self cleaning concrete with its massive reaction it makes the pollutant to be inactive.

Luigi cassar (the innovative inventor)•Luigi cassar(italian chemist) invented the self cleaning concrete in 2013 • european inventor award at 2013.•He invented this fabulous concrete in italicementi .

Nitrogen oxide(the foreign intruder)

• Nitrogen oxide NOx is the air pollutant which presents in the atmosphere more amount due to smog,smoke ,vehicle emission,etc.

78.00%

20.95%0.93% 0.02% 3.00%

Composition of dry air in the atmosphere

Nox Oxygen Argon Trace gasesCarbon di ox-ide

Effects of NOx

• NOx mainly impacts on respiratory conditions. • causing inflammation.• Long term exposure can decrease lung function• And it causes the building to deteriorate also.• causes lakes and streams to become acidic.

Why titanium dioxide(Tio2)?

•Titanium dioxide is the only component which makes the building effectively non polluted.•Tio2 through its process of oxidizing the N0x into NO and NO2 in powdered form it makes the building depolluted.

The mix design

• similar to m20 grade concrete.• Addition of 3.5% to 4% of Tio2 to the 96.5% of cement.• without any other chemical admixtures•Requires on

How it works?• Firstly, a self cleaning effect due to oxidation

promoted by sunlight.• Secondly,photo induced hydrophilicity makes it

looks.• Since the pollutant is organic it causing dirt

over the surface• It is easily removed by rain fall or manual

rinsing.

Procedure to be followed

• Light and heat are the main source • Make sure these hits the concrete• Automatically the reaction takes place• Then the gaseous particle break down into

dust particle• Rinse it with water to make it clean.

Process of self cleaning• This self cleaning process can be done by oxidizing the NOx gases into powdered or dust like particle by using the UV rays from the sun as resource by titanium dioxide (Tio2).

The operation of self cleaning concrete

• Once the sunlight is falls on the building the UV

rays of certain range will allowed to fall on the building • Photocatalytic process Tio2+Nox+sunlight.

• the hazardous gas becomes powdery particle & stays over the building like a dust.

After the process

• Water plays main role as a source of rain fall or manual cleaning• so clean the concrete with the water• Or otherwise it was self cleaned by rainfall and makes the building non polluted.

Water droplets rinsing the NOx dust.

Before and after

Tunnels and pavements

• Tunnels are most denser atmosphere• Due to this larger air pollution occurs by vehicles• UV lamps are used here as source• As well as pavements also provided by self cleaning concrete.

Some of the tunnels and pavements

A Pavement in france followed by self cleaning concrete.

A Tunnel in belgium having UV lamps and followed by self cleaning concrete.

Buildings in the concept of self cleaning concrete

The Jubilee Church, formally known as Chiesa di Dio PadreMisericordioso,rome.

Hotel de policia, Police station in bordeaux,paris.

Merits of self cleaning concrete

• Reduces NOx content in atmosphere• Keeps the concrete young• Depollute other pollutants • Eco friendly • Reduces depletion of ozone layer• Reduces corrosion and patch formation in the concrete

conclusion

• photocatalytic concrete materials have been used in

horizontal and vertical applications

• Inventors are the one who invents and engineers are

the one who makes it comfortable to the environment

• Using the articles like self cleaning concrete it is possible.

• It is preferable to use self cleaning concrete as an

ecofriendly approach.

The god creates the world the engineer build the rest

THANK YOU