distressed concrete
DESCRIPTION
Concrete cracks, reasons and how to fix/avoidTRANSCRIPT
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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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