What Leads To Concrete Spalling?

Maxkote Ltd

WHAT LEADS TO CONCRETE SPALLING? HTTPS://WWW.MAXKOTE.CO.UK/

Introduction WEAKENING CONCRETE IS MORE PRONE TO CRACKING AND CRUMBLING, AND IF SPALLING GETS SEVERE, VERTICAL STRUCTURES LIKE WALLS OR COLUMNS MAY COLLAPSE. IT IS ADVISED THAT YOU REPAIR IT QUICKLY AND WITH HIGH-QUALITY SPALLING CONCRETE REPAIR PRODUCTS.

THE TWO MOST FREQUENT CAUSES OF SPALLING ARE LISTED BELOW. 1) Freeze and thaw cycle:

2) Corrosion of reinforcing bar:

AFTER NUMEROUS CYCLES, WATER THAT HAS GOTTEN WITHIN THE CONCRETE FREEZES EXPANDS AND PUTS PRESSURE ON THE MATERIAL INSIDE, CAUSING IT TO SPILL. PIECES OF THE TOP LAYER SLAKE OFF WHEN A STRONG FORCE IS APPLIED TO IT.

REBAR CAN RUST WHEN WATER ENTERS AN EXPOSED CONCRETE SURFACE. A REBAR THAT HAS RUST ON IT TAKES UP MORE ROOM THAN A REBAR THAT DOESN'T HAVE RUST, WHICH LEADS TO AN INCREASE IN INTERNAL PRESSURE AND A SPALL.

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