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It provides tensional strengh.
Posted by: irish21 (1253) on 2017-06-16 11:36:25 In Reply to: It's a common misconception that mesh strengthens the concrete, its purpose is crack control posted by A4inATL on 2017-05-26 22:09:48	Share \| Report

Concrete is extremely strong in compression but extremely weak in tension. This is why it is reinforced with steel, whether it be rebar or welded wire mesh.

When you put a load on a concrete slab, the top of the slab goes into compression and the bottom goes into tension. reinforcment is meant to go into the bottom third of the slab to help with the tensional force.

The smaller, tightly gridded mesh is more effective than widely spaced rebar when you have distributed loads.

Thread:

putting in a new sidewalk tomorrow...wish me luck. - jstoker 2017-05-12 14:58:56 (696 views)
- where's the rebar? - Bakes 2017-05-12 18:58:07 (217 views)
  - we're old school....like to have either mesh or rebar.... - Rakete 2017-05-14 17:18:51 (227 views)
    - It's a common misconception that mesh strengthens the concrete, its purpose is crack control - A4inATL 2017-05-26 22:09:48 (217 views)
      - It provides tensional strengh. - irish21 2017-06-16 11:36:25 (177 views)
      - yep....no one wants cracks....and we don't have any.... - Rakete 2017-05-27 11:28:29 (174 views)
  - Its not used much anymore...they mix in fibers in the concrete. - MARK(nmtt)RS5 2017-05-14 10:05:24 (306 views)
    - Yup, mine too. - 5speed6 2017-05-15 13:25:22 (196 views)
      - not a fan of fibers, if you have some major subsidence under the slap due to incomplete compaction..  -  pilot345  2017-05-15 17:20:11 (267 views)
        
        The soil here is dense clay. I'm hoping it is enough with the fiber.  -  jstoker  2017-05-16 11:55:47 (290 views)
        
        clay can move as easy and move the concrete...   -  Rakete  2017-05-17 08:28:52 (196 views)
        
        this ! for sure, expansive clays can be so volatile that you can't bear a footing of any size on it.   -  pilot345  2017-05-19 11:02:36 (171 views)
        
        60% of the sidewalk has 3+ inches of gravel. The rest has about 1 inch.  -  jstoker  2017-05-10 17:48:58 (203 views)
        
        I'm not implying that you will ever have a problem with your sidewalk! Just pointing out the false..  -  pilot345  2017-05-19 21:16:32 (196 views)
        
        For flatwork (like sidewalks) around here mesh is common; however,  -  gription  2017-05-16 09:54:26 (267 views)
        
        That's pretty silly! Saw cutting before demo prevents any unwanted disturbance to adjacent panels...  -  pilot345  2017-05-19 11:10:48 (186 views)
        
        I neither write or endorse certain village ordinances.  -  gription  2017-05-23 10:48:50 (353 views)
        
        As is wire in conduit.  -  thinset  2017-05-19 02:46:03 (194 views)
        
        Yeppers!   -  gription  2017-05-21 20:24:24 (177 views)
- You're doing it? Or you're having it done? What material? - Pelican Pete 2017-05-12 15:23:18 (259 views)
  - I did concrete with fiber mixed in. - jstoker 2017-05-16 09:41:01 (363 views)
    - I love working with concrete....and this week I'm cleaning it all... Fun finding little date - Rakete 2017-05-17 08:46:48 (238 views)
      - must have never been on the brink of loosing a huge pour on a hot day!! ; ) I love it, MOST times!   -  pilot345  2017-05-19 11:12:57 (181 views)
        
        cement is funny stuff....better wet than dry mix....   -  Rakete  2017-05-20 11:24:19 (164 views)
        
        for easy finishing yes, but for higher strength, a dry mix is better.   -  pilot345  2017-05-21 01:19:23 (168 views)
        
        What do you mean by that?  -  Pelican Pete  2017-05-20 20:41:32 (218 views)
    - Looks like it turned out well. - gription 2017-05-16 13:00:53 (269 views)
      - Thanks. - jstoker 2017-05-16 13:30:20 (243 views)
        
        You don't have to tell me - I'm reminded of that every time I - gription 2017-05-16 18:07:43 (246 views)

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