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2000s

  • Biting the Dust

    The owner of a recently constructed manufacturing facility contacted us to help solve a problem with the concrete floor's surface.

     
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    Proper Prep Before Work Starts

    I'm relatively new to the concrete polishing business. My company has been involved in treating stone and tile floors for years, and recently began to polish more concrete surfaces. Recently, we were asked to bid on a project that featured a concrete floo

     
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    Using Stainless Steel Tie Wire With Standard Rebar

    Can stainless steel tie wire be used with standard rebar?

     
  • What Yield Can Do For You

    I've heard guys on jobsites talking about yield and they don't mean “get out of the way.” Is this something I should care about?

     
  • Preparing for an SCC Pour

    We have our first large self-consolidating concrete (SCC) project coming up soon, so I want to ensure that we get this right. The engineer performed the required test mixes to confirm slump, flow, spread, and compressive strength performance. The mix from

     
  • Thinking About Sustainability

    Are concrete contractors really committed to green issues? Or are they just paying it lip service to get jobs?

     
  • Fixing a Curling Floor

    The contractor says it is a workmanship problem between me and the excavator. What are your thoughts on this and how should I go about repairing it? The contractor suggested pumping grout under the floor at the joints, but I don't think that is a good ide

     
  • Checking Carbon Dioxide

    We are pouring a 60,000 square-foot indoor facility in Northern Ohio that is being heated with a 2 million btu salamander. We have good ventilation but are concerned about carbonation.

     
  • The Relevance of Microcracking

    What is microcracking? As a small concrete contractor, should I be concerned about it?

     
  • Grinding Questions From a Novice

    I am the building manager for a large church on the East Coast. We recently have contracted with a company to grind and overlay about 5000 square feet of our church.

     
  • Did Salt Finish Affect Color?

    I am the building manager for a large church on the East Coast. We recently have contracted with a company to grind and overlay about 5000 square feet of our church.

     
  • Seeking Soil Cement Information

    Would you please provide us with information on soil cement? Specifically, we are looking for product information and how it is purchased--by ton, weight, truck load? We also need pricing information.

     
  • Glass Spheres for Lightweight Job

    I would like to consider using the small glass spheres described in an article I found on your Web site. However, I cannot locate the company that was reclaiming glass from the waste stream and recycling it into this lightweight aggregate. Can you provide any information?

     
  • How the W/C Affects Concrete Strength

    I've heard many times that changing the water-cement ratio in concrete has a large effect on its strength. The question is, why?

     
  • Evaluating Durability of a Structure

    As we are more and more concerned with durability, how do we measure it on a given structure after a year or after 5 years?

     
  • Dealing With Burlap Stains

    One problem with trying to remove this type of stain is that you may find yourself left with a nonuniform appearance--the areas of cleaner, brighter concrete standing out where dark stains used to be. You might try blasting lightly using blast media that'

     
  • Uncertain How to Proceed

    I have recently taken charge of a multistory construction building in Pakistan, which three floors are already built, including one basement. On the first floor, it has been observed that the proper mixing of the material has not been maintained and the coarse material could have contained mud...

     
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    Inflatable Form Search

    I am searching for a supplier of inflatable formwork for constructing culverts onsite. I believe the balloon-like apparatus comes in different sizes, but I can't find a source.

     
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    What does this moisture test data mean?

    I am employed by a home builder and currently dealing with a homeowner who is claiming moisture damage to the hardwood flooring in her home. She hired a professional who completed the ASTM F2170 test.

     
  • Nominal Weight of Standard Concrete

    What's the nominal weight of standard concrete?

     
 
 
 
 

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