Concrete
Concrete
Concrete
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Protection of <strong>Concrete</strong> Against Rain<br />
‣ Contractor must establish procedures to<br />
follow in case of impending<br />
rain<br />
• Stop paving operation ASAP<br />
• Cover freshly placed concretee<br />
• Do not remove excess water before<br />
covering<br />
‣ Damage due to rain<br />
• Surface damage – wash away of paste<br />
• Rapid cooling - potential for cracking due to<br />
high built-in stresses & greater slab curling<br />
‣ Evaluate rain damage age by examining &<br />
testing core samples – effect on durability
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