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DistressedConcrete

Bruno Ferreira

Maiara Melara

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Case #1

Probable causes

• Curls;• Bad sub-base;• Over load;

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Case #1 - Causes

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Case #1 - Repair 

• Destroy the old slab;

• Mae a !ood subbase;

• Mae the slab a!ain;

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Case #" - Causes

• Crac caused by ati!ue ailureunder repeated traic loadin!;

• $uspended slab %ith steel;

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Case #" - Repair 

• Fill %ith isolation ∮• $taplin!;

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Case #'

• Dierent (aterials have dierent(ove(ents %ith the te(perature

chan!es;

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Case #' - Repair 

• Fill the cracs %ith an

e)pantion &oint to per(it the

(ove(ent o dierent

layers*

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Case #+ - Causes

• ,he &oint paralel at the

side%al is not %orin!

as a isolation &oint thusthe concentrate stress

on the perpendicular

 &oint is transered to the

side piece %hat causes

the cracs in it*

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Case #+ - Repair 

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Case #. - Causes

• ,he &oint %hich has the sa(e

an!le as the crac is not %orin!

as it is suposed to do* ,he stress

caused by the e)pansion and

shrina!e o the concrete* /t can

also be caused by curl or a bad

base*

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Case #. - Repair

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Case #0 - Causes

,he elorescence is a crystalline deposit on concrete caused by

%ater iniltration thou!ht the concrete that carries soluble salts as

calciu( carbonate

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Case #0- Repair 

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