The Right Product for the Right Job Since 1980
Epoxy.com News and Tips
The Right Product for the Right Job - Since 1980
The newest addition to Epoxy.com Education Pages is “Epoxy Resin Strengths Explained” which explains the 4 primary strengths that are very important for most civil and mechanical engineering applications of epoxy: compressive strength, tensile strength, flexural strength, and bond strength. “Epoxy Resin Strengths Explained” also discusses the test methods to measure these strengths.
Each stone used for epoxy stone overlays will give you slightly different results. The cleaner the stone, the less epoxy that will be required. If the stone is dusty, more resin will be required. Stone with a lot of flat surfaces that interface with each other well, may require less resin than a very round stone that has small surfaces that touch each other. This calculator is designed to give you quick “Rules of Thumb” to help you do quick estimating. Be sure to test Epoxy.com Product #17 with your stone to verify dosing. The dosing that this calculator is based on is 1 gallon of mixed epoxy resin and hardener for each 100 lbs of stone. This is a little more resin than is necessary for most well graded, clean dry stone.
Please contact me with your questions.
Norm Lambert
President & Director of Technical Support
Epoxy Systems, Inc
Florida & Vermont USA
Available by Phone M-F 9AM-4PM Eastern Time (6 AM – 1 PM Pacific Time)
352-533-2167 (Voice)
352-465-3497 (fax)
norm@epoxy.com
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You did not say what size stone you are using or how deep you are looking to install it at.
Each stone will take a different amount of resin to bond it in place, depending on the size, shape and how clean it is. Also each stone size will have a different yield. But here is how it is calculated (to a theoretical area and coverage).
The recommended starting point is 1.5 gallons of resin plus or minus to each 150 lbs of stone.
I measured a stone that I had that was 1/8 x 1/16, and got about 0.6 cubic feet per 50 lbs.
So a yield of 3 gallons of #17 and 300 lbs of stone would produce about 0.6x 6 bags or 3.6 cubic feet.
600 square feet at ½ inch thick is (144/2)x600 or 43,200 cubic inches or 25 cubic feet (43,200/1728)
25 cubic feet /3.6 = 6.9 units
The unit size is 3 gallons or ( 7×3) 21 gallons.
Thank you for your interest in our products. Please contact me with your questions.
Epoxy Systems, Inc.
Norm Lambert
President & Director of Technical Support
Available by Phone M-F 9AM-4PM Eastern Time (6 AM – 1 PM Pacific Time)
352-533-2167 (Voice)
352-465-3497 (fax)
norm@epoxy.com
www.epoxy.com New Secure Login
www.epoxy.com/wireless Now Available on your web enabled Wireless Devices
Subscribe to Epoxy.com News Feed – Get the latest product information, tricks and tips delivered directly to you via your favorite news reader
For concrete outdoors and/or is going to see extreme temperatures, you
would typically want to limit your injection to about 1/4 inch. If the
crack is larger than that you may experience some thermal coefficient issues, if
injected using normal epoxy concrete injection techniques.
Thermal coefficient is the rate that materials expand and contract due to
temperature changes. Neat epoxy resin expands at a rate greater than
concrete. In small cracks this is not important, but as the mass of epoxy
gets greater, the potential for differential movement gets greater.When I have been forced to epoxy inject these cracks larger than 1/4 inch
I like to use Epoxy.com Product #301 – www.epoxy.com/301.htm..
Epoxy.com Product #301 is is a low mod (more “flexible”) injection
material and is less likely to create a thermal co-efficient problem than a
high modulus material.
If the crack is still bigger, I try to pack as much Epoxy.com Product
#703 – www.epoxy.com/703.htm –
Low-Mod Epoxy Gel Adhesive as I can into the crack. First I place
copper tubing as far back into the crack as I can. Then I fill out to
the surface with the Epoxy.com Product #703. If the crack is large
enough you can also mix up to 1 part silica sand with 1 part of mixed
Epoxy.com Product #703. Mixing in the silica sand saves material
costs, and makes the Epoxy.com Product #703 easier to trowel. Most
importantly the thermal coefficient of the Epoxy.com Product #703 and silica
sand is much closer to that of concrete than the Epoxy.com Product # 703 alone.
After the Epoxy.com Product #703 has hardened, you can pump the Epoxy.com
Product #301 into the copper tubes that were inserted earlier. This
results in a very effect, well designed and engineer solution for larger
cracks. When in doubt how to proceed with larger cracks, please contact me
at Epoxy.com Technical Support – 352-533-2167 or by email at
norm@epoxy.com.