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Building blocks in hot weather

  • 02-07-2018 8:36pm
    #1
    clonagh
    Registered Users, Registered Users 2 Posts: 256 ✭✭


    Is it too hot to build blocks these days? What's the maximum temperature after which is not recommended?
    Thanks


Comments

  • #2
    Metric Tensor
    Registered Users, Registered Users 2 Posts: 3,725 ✭✭✭Metric Tensor


    The mortar would be the issue - it will "go off" very fast in warm weather. Special precautions need to be taken to ensure it's appropriately workable whilst remaining the correct strength.

    The same issues for pouring concrete.

    As an example I have seen specifications that say that where concrete is being poured in temperatures above 30 degrees the structural engineer must be contacted in advance to agree a methodology that maintains workability and strength.


  • #3
    clonagh
    Registered Users, Registered Users 2 Posts: 256 ✭✭clonagh


    Special precautions need to be taken to ensure it's appropriately workable whilst remaining the correct strength.

    Any idea what these are?


  • #4
    Metric Tensor
    Registered Users, Registered Users 2 Posts: 3,725 ✭✭✭Metric Tensor


    I'm no blocklayer but either a different mix design, special admixtures, or both.

    Whacking in fairy liquid does not count!


  • #5
    Mr Gumby
    Registered Users, Registered Users 2 Posts: 68 ✭✭Mr Gumby


    Cement only cures when it is moist, if it dries out too quickly its will crumble, so particularly blocks etc laid in hot dry weather are a real problem as they are very easily disturbed and the joint broken. The blocks themselves are bone dry and suck the moisture out of mortar. Everything needs kept damp.


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