Transparent Concr Te

7/25/2019 Transparent Concr Te

http://slidepdf.com/reader/full/transparent-concr-te 1/10

UTILISATION OF SMART TRANSPARENT CONCRETE

PRODUCT

-A STEP TOWARDS GREEN BUILDING

CONSTRUCTION

KARTHIK.C,DEEKSHITHA.O

Abstract

Building energy saving and safe evaluation for engineering

structures have obtained the world wide attention.Transparent Concrete is

a concrete based building material with light transmissive properties due

to embedded light optical elements usually optical bres. Light is

conducted numerical aperture Plastic Optical Fibres POF! or big diameter

glass optical bre into concrete. The main purpose is to use sunlight as a

light source to reduce the power consumption through the stone from one

end to other. Therefore the bres have to go through the whole ob"ect.

Transparent concrete is also #nown as the translucent concrete and light

transmitting concrete because of its properties. $t is used in ne

architecture as a facade material and for cladding of interior walls. Paper

discusses integration of merits of concrete and optical bre% for developing transparent concrete by arranging the high of illumination and

to use the optical ber to sense the stress of structures.

The paper discusses a new #ind of building material% which can

integrate green energy saving with self sensing properties of functional

materials are important for construction industry. The evaluation of the

e&ectiveness of the smart transparent concrete% the light guiding based

on white light test% long term durability and chloride ion penetration test

and self sensing property based on stress elasto optic e&ect test are

made. The e'periments results show that the smart transparent concrete

has good transparency% mechanical and self sensing properties.

Keywords: Transparent concrete% Optical bre% (rchitectural%

Concrete% Cladding% Transmittance.

1. I!tr"#$ct%"!

With the economic development and technology more and larger

scale civil engineering structures such as tall buildings, underground

buildings, landmark buildings are built around the world. The Optical



fbre sensors such as fbre Bragg Grating, Brillouin distributor sensor

and plastic optical fbre sensors have been widely used or the in situ

monitoring o maor proects !Ou and "hou, #$$%&'nshari, #$$(& Wu,

#$$)& *naudi+ue+ et al, #$$-& alymnios, #$$/& urashima, 011(&

uang, #$$)2. 3ew building materials are developed and used instructures, including sel diagnosis smart concrete, sel tuning smart

concrete, sel repairing concrete, sound proo concrete, thermal

insulation concrete and so on. These unctional materials only ocus on

the intelligence characteristics and cannot possess energy saving. *n

#$$0, the concept o transparent concrete is put orward by 4angarian

'rchitect 'ron 5oson+i, the frst concrete block is successully prepared

by mi6ing large amount o glass fber into concrete in #$$%, named as

5iTra7on. 8oel 9. and 9ergio O.G. developed a transparent concrete

material, which can allow :$; light through and only %$; o weight o common concrete. The *talian <avilion in 9hangai =6po #$0$ shows a

type o transparent concrete developed by mi6ing glass into concrete

in #$0$. While the transparent concrete is mainly ocused on

>transparent? and its application obect is art design.

Optical fbre acts as a base material in construction and sensing

feld which can arrange the sunlight transmit according to pre designed

road without light @ heat, light @ electrical or photo chemical process,

photo elastic eAect which can be used to study the stress distributiono structures. 7ombining the advantages o the concrete and optical

fber developing a novel unctional material has important value o



application or construction.

&.N''# ("r tra!s)ar'!t c"!cr't'

7ivil engineering structures always suAer rom e6ternal

environmental eAects, such as atigue, corrosion and wind load and so

on in long term service. echanical property and anticorrosion property

o building material at adverse environments are two key acts or the

durability o in service structures, which directly impact the saety o structures.

By the study o the mechanical properties o smart transparent

concrete with diAerent <OC volume ratio under malDcondition, ro+en

process helps in fnding the compressive strength rate o the material.

&.1Pr")'rt%'s "( tra!s)ar'!t c"!cr't'

Cor the smart transparent concrete the interacial bonding o the

<OCEs and concrete is a crucial actor in determining ultimate

impermeable properties. The chloride diAusion coeFcient method is



used to test the impermeability property o smart transparent concrete

which can rapidly evaluate the permeability o concrete by mi6ing the

electric energy through concrete. *n this paper the smart transparent

concretes with $;, %; and ); <OC volume ratio are chosen or the

test. The electric energy is recorded by the electric u6 detector 38WDH7<D)' made in 7hina and cylindrical concrete specimens with 0$$mm

diameter and /$mm height are abricated rom the pre abricated

smart transparent concretes by core drilling method. oreover, in

order to evaluate the interace bonding on the impermeability property,

each model o specimen has been divided two types. One is that the

border o <OC and concrete is covered by epo6y resin, the other is not

covered by epo6y resin.

Tab*' -1 Pr")'rt%'s "( tra!s)ar'!t c"!cr't'

PRODUCT L%TraC"!Corm <reabricated blocks

*ngredients 1); concrete,-; optical

fberIensity #0$$D#-$$kgJs.mtr

Block si+e )$$mmK%$$mm

Thickness #/D/$$mm

7olour White, gray or black

Cibre distribution OrganicCinished

7ompressive strength

Bending tensile

strength

<olished

/$ 3Js.mm

( 3Js.mm



+.Ma!$(act$r%! )r"c'ss

The manuacturing process o transparent concrete is almost

same as regular concrete. Only optical fbres are spread throughout the

aggregate and cement mi6. 9mall layers o the concrete are poured on

top o each other and inused with the fbers and are then connected.

Thousands o strands o optical fbers are cast into concrete to transmit

light, either natural or artifcial. 5ight transmitting concrete is produced

by adding -; to /; optical fbers by volume into the concrete mi6ture.

The concrete mi6ture is made rom the fne materials only it does not

contain coarse aggregate. Thickness o the optical fbers can be variedbetween #micrometre to #millimetre to suit the particular reuirements

o light transmission.





.A#a!ta's a!# #%sa#a!ta's

• The main advantage o these products is that on large scale

obects the te6ture is still visible @while the te6ture o the fnal

translation concrete becomes indistinct at distance.

• When a solid wall is imbuded with the ability to transmit light, it

means that a home can use ewer lights in their house during day

light hours.

• *t has very good architectural properties or giving good

aesthetical view to the building.

•

When light is not able to come properly at that place transparentconcrete can be used.

• =nergy saving can be done by utilisation o transparent concrete

in building.

• Totally environment riendly because o its light transmitting

characteristics, so energy consumption can be reduced.

• The main disadvantage is these concrete is very costly because

o the optical fbers.

• 7asting o transparent concrete block is diFcult or the labor so

special skilled person is reuired.



.1A))*%cat%"!s

• *lluminate your walls

Transparent concrete can be used as building material or interior

and e6terior walls.

• Watch your payment shine at sunset.

• Get creative with design.

• 'rtsy reception desk.

• ' lighting f6ture and conversational piece.

• *n urniture or the decorative purpose.

• 5ight side walks at night

• *ncreasing visibility in dark subway stations

/.C"!c*$s%"!

' novel architectural material called transparent concrete can be

developed by adding optical fber or large diameter glass fber in

the concrete mi6ture. The transparent concrete has good light

transmitting properties and the ratio o optical fber volume to

concrete is proportion to transmission. The transparent concrete

not looses the strength parameter when compared to regular

concrete. 'nd also it has vital property or the aesthetical point o

view. *t can be used or the best architectural appearance o the

building. 'lso used where the light cannot reach withappro6imate intensity. This new kind o building material can

integrate the concept o green energy saving with the usage o

sel sensing properties o unctional materials. One can conclude

that transparent concrete is a positive step towards making o

Green house. *t also helps in improving 5=I score rating o a



building.

R'('r'!c's

02 I.I.5 7hung cement reinorced with short carbon fbers&

composites L part B.%0L/00D/#),#$$$.#2 C 'nsari. <ractical implementation o optical fber sensors in civil

structural health monitoring. 8ournal o intelligent material

systems and structures, 0:!:2L:(1D::1,#$$(.%2 4.5i,4G Miao,8< Ou. icrostructure o cement motor with nano

particles.%/L0:/D0:1,#$$-.-2 8ianping 4e, "hi "hou, 8inping Ou, inghua 4uang, >9tudy on

small transparent concrete product and its perormancesEE,

dalian, 7hina, #$00./2 alymnios, I. <lastic optical fbers in sensing @ current status and

prospects.0(th international conerence on optical fber sensors

9<*=,/://,#$$/.)2 .9.7. uang, .aale, 9.T.Nuek. 4ybrid optical fber sensor

system based on fber Bragg gratings and plastic optical fbers or



Documents

Transparent Concr Te