Patio inquiry

Discussion in 'Hardscaping' started by Seabass2500, Jul 25, 2006.

  1. Seabass2500

    Seabass2500 LawnSite Member
    from Indiana
    Posts: 15

    I laid this patio, 2200 sq ft, of irr Penn Blue stone. It is on 5" 411 (compacted gravel w/ dust) and 5" of re-inforced concrete. The mortar is 1/2" - 1 1/2" below stones and about 1/2" - 3/4" joints. After about 2 weeks, we are starting to see some small cracks along the seams of some of the joints. I am thinking that it may be due to the extreme heat we have been having causing the mortar to cure/dry too quickly. I am not having any of the issues with the walls though...

    Let me know what you think.

    Thanks.

    *** Pictures ***

    http://home.cinci.rr.com/cs1/picts/2006 04-19 015.jpg
    http://home.cinci.rr.com/cs1/picts/R001.jpg
    http://home.cinci.rr.com/cs1/picts/M003.jpg
    http://home.cinci.rr.com/cs1/picts/M006.jpg
    http://home.cinci.rr.com/cs1/picts/M010.jpg
    http://home.cinci.rr.com/cs1/picts/R005.jpg
    http://home.cinci.rr.com/cs1/picts/R003.jpg
     
  2. XXL Hardscaper

    XXL Hardscaper LawnSite Member
    Posts: 37

    Nice Work !

    What was your mix for the grout?
     
  3. Seabass2500

    Seabass2500 LawnSite Member
    from Indiana
    Posts: 15

    Thanks.

    We mix about 1 part Type N mortar cement and 2 1/2 parts fine sand.

    I haven't had many problems like this before is the odd thing.
     
  4. XXL Hardscaper

    XXL Hardscaper LawnSite Member
    Posts: 37

    I have seen this happen from mortar drying to quick. I prefer type s at a 3 to 1 mix. Also adding a little more lime when it is really hot will help slow the cure a little by helping retain moisture longer.
     
  5. Seabass2500

    Seabass2500 LawnSite Member
    from Indiana
    Posts: 15

    The only way I have ever repaired a hair-line crack before was with an almost liquid mortar mixture and rub it into the crack. With joint cracks, usually bigger ones, I would grind out some of the mortar first so I could put in a healthy amount of mortar to minimize its chances of popping.

    If you have any other suggestions... shout them out! :)

    Thanks.
     
  6. Premier_Lawn

    Premier_Lawn LawnSite Member
    Posts: 23

    liken the microwave idea in the last picture :clapping:
     
  7. Randy J

    Randy J LawnSite Bronze Member
    Posts: 1,124

    Can't help much, but what an awesome job! I'd like to have that backyard.
     

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