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    CHIPPEWAAS's Avatar
    CHIPPEWAAS Posts: 10, Reputation: 1
    New Member
    		  
    #1

    Jun 12, 2008, 06:50 AM
    Haircrack in Fresh Concrete
    Is it normal to have haircrack in new concrete slab? We just poured concrete yesterday at 95 degree temperature, 4 hours after finished we sprinkle water on concrete rightaway and noticed haircrack. I'm concerned that will it reduce its strength. Thanks in advance for your response.
    amricca's Avatar
    amricca Posts: 851, Reputation: 92
    Senior Member
    		  
    #2

    Jun 12, 2008, 07:25 AM
    Concrete tends to crack when it cures, don't worry about a hairline crack.

    How to Identify, Evaluate, & Repair Shrinkage Cracks in Poured Concrete Slabs
    CHIPPEWAAS's Avatar
    CHIPPEWAAS Posts: 10, Reputation: 1
    New Member
    		  
    #3

    Jun 12, 2008, 07:34 AM
    Thanks for your response and concrete website.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #4

    Jun 13, 2008, 09:02 AM
    Yes concrete does crack but you crack was accelerated because you should have draped damp cloth on the pour earlier than 4 hours. As your concrete trid to cure some of the moisture evaporated in the 95 degree temp.
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