pre-stressing concrete g2(maliki,dayat & wildan)

8/18/2019 Pre-stressing Concrete G2(Maliki,Dayat & Wildan)

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PRE-STRESSING

CONCRETEPRE -

TENSION

POST-TENSION

PREPARED BY:

1-Maliki 2-Hidayat

CONSTRUCTIONTECHNOLOGY iii

Lecture:PM.Aminudin Ali


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PRE-STRESS

• Pre-stressed cncrete is ! met"d #r$ercmin% cncrete&s n!tur!l 'e!(ness intensin.

• T"e !))lic!tin # ! #rce t t"e structure*t"er t"!n t"e !))lied l!d* '"ic" !ssists t"e

)er#rm!nce # t"e structure


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PRINCIPLE O+ PRE-STRESSCONCRETE

• Pre-stressin% is ! met"d in'"ic" cm)ressin #rce is!))lied t t"e rein#rcedcncrete sectin


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,HY USE PRE-STRESSING

• i/erent #rm ! cn$entin!lrein#rced cncrete structure due t

t"e !))lic!tin # !n initi!l l!d nt"e structure )rir t its use.

• Cm0in!tin rein#rcement in

cncrete m!(e it 0ecme strn%er.


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FACTORS

• Hi%" L!d 1e!rin%C!)!cit2

Cnstructin3Structure.• Reduce Cncrete Si4e 5Rein#rcement.

• R!)id Cnstructin


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APPLICATIONS

• 1uildin%s

• T'er

• Under%rund Structure

• O/s"re Structure

•

1rid%e


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MATERIALS 5COMPONENTS

ductin%

%rut6ttin%

7em0edded8

0e!rin%s

cu)ler

9!c(in%

7"2dr!ulic !c(8

!nc"r!%e

tendn

mulds


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Pre-Stressin%

Pst Tensin

1ndedUn-0nded

Pre Tensin

H!r)in%3Strin%in%

CLASIFICATON OF PRE-STRESSING


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PRE -TENSION


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WHAT IS PRE-TENSION

• Pl!cin% # cncrete !rundrein#rcin% tendns t"!t

"!$e 0een stressed t t"edesired de%ree


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CONCEPT


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OPERATION SUMMARY

;.Anc"rin% #tendns

!%!inst t"e end!0utment

Cuttin% t"etendns


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POST -TENSION


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,HAT IS POST-TENSION

• Which are pre-stressing steel cablesinsides plastics dcts !r slee"es# arep!siti!ned in $!r% be$!re the

c!ncrete is placed

• T&! t'pe !$ p!st-tensi!n(

)* +!nded

,* nb!nded


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CONCEPT


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Cnt.


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Cnt.


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CASE STUY

pre-stressing concrete g2(maliki,dayat & wildan)

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