Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Concrete, Stone & Masonry

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 09-17-2013, 04:58 PM   #16
Concrete & Masonry
 
Join Date: Nov 2008
Location: Wisconsin
Posts: 2,690
Share |
Default

Cracks in new concrete


You need to answer a few questions before you get any useful answers IMO.

First, where are you located?? Maybe I missed it, but in many areas, I'd doubt a micro topping would last very long on such poor concrete.

Second, do you have a contract at all, and does it have any specifications to concrete design strength, thickess, etc... at all?

Third, why is the concrete supplier working directly with you if the contractor is their customer??

jomama45 is offline   Reply With Quote
Old 09-18-2013, 05:25 AM   #17
Member
 
Join Date: Jun 2009
Location: hilton head & atlanta
Posts: 3,039
Default

Cracks in new concrete


as generally defined, ' microtopping ' has no aggregate therefore its unsuitable for exterior use - its just polymer, water, & ceement.

IF your compressive strength's that low, placing a 4.5 - 4.5K comp strength o'lay's pointless,,, t-scar said it best = replace it ( by someone who knows this time ! )
__________________

if you hear it from a guy in the apron store, be VERY suspicious the mtl/method will work,,, when it time to build something together, they won't answer phones NOR help
itsreallyconc is offline   Reply With Quote
Old 09-18-2013, 09:17 PM   #18
Member
 
Msradell's Avatar
 
Join Date: Sep 2011
Location: Louisville Kentucky
Posts: 1,065
Default

Cracks in new concrete


If you have a contract that specifies what the concrete ultimate strength was supposed to be you are in good shape otherwise things could get very dicey. He is full of BS saying that everyone adds water and that 1500 psi is okay. A high-strength topcoat is not going to solve anything. Assuming you have a well-documented contract as these are going to end up in court or you're going to get the entire thing replaced.
Msradell is online now   Reply With Quote
Old 09-20-2013, 09:21 AM   #19
World's Tallest Midget
 
Mort's Avatar
 
Join Date: Nov 2008
Location: Twisp, WA
Posts: 674
Default

Cracks in new concrete


Your contractor is right about one thing. Everybody adds a ton of water, at least on homeowner jobs they do. I put 85 gallons of extra water in a 10 yard load a few weeks ago, I guarantee it's going to crack. But after the customer accepts the load, it isn't the mixer driver's decision anymore.

He is incorrect that 1500psi is enough. If the spec in the building code is 2500 or whatever it may be, he placed an inferior material, and you may have a case.
Mort is offline   Reply With Quote
Old 09-20-2013, 10:12 AM   #20
Member
 
Join Date: May 2009
Location: Owasso OK
Posts: 347
Default

Cracks in new concrete


What is the purpose of adding all the extra unneeded water on homeowner projects? Especially if one knows it's going to cause cracks. I don't get the reasoning.
RoyalAcresRod is offline   Reply With Quote
Old 09-20-2013, 03:56 PM   #21
Member
 
Join Date: Mar 2006
Location: Austin, TX
Posts: 1,214
Default

Cracks in new concrete


Because it is easier to place a 10" slump than a 5".
__________________
Advice is free, Lessons begin at 75 bucks an hour.
Tscarborough is offline   Reply With Quote
Old 09-21-2013, 04:21 PM   #22
World's Tallest Midget
 
Mort's Avatar
 
Join Date: Nov 2008
Location: Twisp, WA
Posts: 674
Default

Cracks in new concrete


Quote:
Originally Posted by Tscarborough View Post
Because it is easier to place a 10" slump than a 5".
We have a winner. When bidding a job, a contractor makes the same amount of money whether he's there for hours sweating his ass off, or raking for a minute and then finishing and leaving. And he's betting that homeowners don't know anything about concrete so he can get away with it. And usually, he's right, otherwise they would've DIYed it.

Mort is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bamboo on modified concrete pad jhanson Flooring 0 10-08-2011 11:58 AM
Repairing cracks in concrete utility sink machouinard General DIY Discussions 3 08-20-2011 09:48 PM
Concrete cracks koos123 Building & Construction 1 04-22-2011 02:01 PM
concrete cracks Wiscbldr Building & Construction 15 04-19-2011 06:20 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.