Epoxy on 316 Stainless

November 16, 2018

A customer writes:

“I’m an architect with a project under construction…

“There is a hazardous materials room in the building where various corrosive products will be stored. The materials are stored in the middle of the room on a large collection pan and the entire floor below that is constructed of stainless steel bar grating – held up off the concrete slab.

“Per the direction of the engineers we have required the contractor to essentially coat all the surfaces in the inside the room with your epoxy Novolac 633

“Now a question has come up about whether or not the 633 will adhere to stainless steel bar grating made from 316 stainless?

“Could you address that for us?”

My Answer:

That is an excellent question.  316 Stainless is very hard to bond to.  Many of our customers have had excellent luck with the following procedure however.

  1. If possible sandblast the stainless to get a profile.  If that is impossible grind/sand it the very best you can to create small scratches everywhere and remove the shine.
  2. Coat with Epoxy.com Product #660 Aluminum Filled Primer – www.epoxy.com/660.aspx . Allow to cure hard to the touch
  3. Apply 2 coats of Epoxy.com #633 or. 633W (Wall Grade).

For more information Contact:

Norm Lambert
norm@epoxy.com
352-533-2167

or visit www.epoxy.com 


Epoxy Injection – Part 4

November 6, 2018

This is the 4th and final in this series on Epoxy Injection.

Part One is  Introduction to Epoxy Injection.  Part 2 is Crack Analysis Before Epoxy Injection. Part 3 is Port setting and Preparation. Part 4

If your have not read that yet you may want to go back and read it before you proceed with reading this.

In this blog we will deal with the actual product and injection procedure, and will include the summary

Epoxy Resin Properties Epoxy.com Product #301

Mix Ratio 2:1 By Volume
Viscosity 400-450 cps
Initial Cure 6 – 8 hours (with normal cure hardener)
Final Cure 24 hours
Pot life 30-40 minute (with regular cure hardner)
Packaging (unit size) 3 gal unit, 15 gal unit, 165 gallon unit
Standard Colors clear
Colors Clear – Can be pigmented at an additional charge to make it easier to see when pumping.
Elongation (ASTM D-638) Greater than 10%
Compressive Strength (ASTM D-695) 10,000 PSI (min)
Tensile Strength (ASTM D-790) 3,500 PSI
Concrete Bond Strength (ASTM C-882) 2,290 PSI
Shrinkage (ASTM C-883) Passed Test
Thermal Compatibility (ASTM C-884) Passed Test
Adhesion to Concrete (ACI Committee 403) 250 PSI (concrete fails)

Resin Injection

Epoxy resin injection with Epoxy.com Injection Gun  designed for Epoxy.com Injection resin is the only way of assuring quality installation. Single component caulking guns, pressure pots, or similar batching equipment are not suitable for injection.

Manual Epoxy Injection Gun

Limit pressures to 40 p.s.i for most applications. Excessive pressures can create additional stressing of Epoxy Concrete Injectionthe crack. It can also cause hydraulic lifting, rupturing of the cracked substrate, or further elongation of the crack. Low pressures allow gradual resin flow into the crack for deeper penetration. On vertical cracks, injection is start at the lowest point, and continue upward on the crack area. While injecting the lowest port, resin will flow to and out of the next higher port.

When pure resin is flowing out the next port cap, plug the current injection portEpoxy Injection of Epoxy and move to the next port. Then injection continues in the port showing resin flow. This procedure continues until all ports are full.

Epoxy Injection Resin Systems should be of very low viscosity for most applications. That way it will flow in the smallest hair line cracks. Resin can travel several feet from the point of injection. It may take some time before reaching the next port or penetrating through pin holes in the surface. Coring samples have shown that epoxy injection effectively fills cracks including small voids and hairline cracks.

Injection During Extreme Weather

A cold substrate will cause an increase in the viscosity of the injection resin. This slows down the rate of injection. A hot substrate results in premature jelling of the resin with sequential loss of penetration. During extremely hot weather an open bridge deck may exceed temperatures as high as 140 Degrees F. Special precautions are necessary before injection work can be done in such weather.

The precaution may be shading the bridge, and water cooling. Always check substrate temperature. The injection machine and its hoses require isolation from extremes of temperature.

Epoxy injection undertaken during cold weather also requires special precautions.

When doing injection work in freezing conditions, determining if there is ice present in the crack is critical. Determining if a cracks inner surfaces are ice coated, is equally important. When injecting under theseClose up of epoxy inection port setting at the Hush House at the Vermont Air National Guard conditions, the resin will not bond to the substrate and no structural rebonding will result. It is usually safer to preheat the portion of the structure you are injecting.

When heating a structure do not overheat it. This closes the crack. When removing heat, the crack may rapidly open. This will rupture the resin before it has a chance to achieve final cure. In most cases, indirect heating is much more desirable than direct heating. Maintain heat for several hours before and after the injection application.

Aesthetics

The color of the sealer material used in resin injection is concrete gray. They are difficult to remove. If aesthetics require complete cleaning, the sealing material can be removed by grinding. This is normally done at an additional charge to the OWNER.

Injection Against A Head of WaterEpoxy injection of the Hush House at the Vermont Air National Guard

Injection of Epoxy Injection Resin against a head of water requires a slightly different procedure than normal injection. If water is running from a crack, applying a hydraulic cement (fast setting) seals the cracks and sets the ports. Epoxy pastes will not set up under this type of wet condition. The hydraulic cement seals the cracks and diverts all water flow through the injection ports.

Hydraulic cement is fast setting, but it does not have the strength needed for an Injection Sealer. Epoxy Concrete Bonder can have the strength to prevent blowouts or leaks while injecting. After the hydraulic cement cures applyingEpoxy Concrete Bonder. That solves this problem.

The injection process follows the procedures described before. The Injection resin forces the water out of the crack and through the adjacent ports. The resin has an amber color and does not look like water. Pure resin flows from the higher port before capping and moving on. The head of water will require increasing the injection pressure used.

INJECTING DELAMINATIONS & HOLLOW PLANES

Delamination of concrete structures is an area where injection can also offer selective repair. A prime example is bridge decks or other self supporting structures. The most common delamination is shearing of the concrete. This is commonly at the upper rebar mat.

Another common situation is hollow plane that develop when concrete bridge piers are resurfaced. Old piers are encased in new concrete. Hollow planes in this type of application are common, especially against smooth sections of the old pier. Cracking then occurs on the surface perpendicular to the hollow plane.

These delaminated area is subject to chemical penetration from the surface and moisture which may attack the reinforcing bar. If the delamination is not repaired, traffic will cause the area to pop-out by pounding on the delaminated upper concrete layer. Freeze-Thaw damage will also tear the concrete apart. The greater the number of freeze-thaws, the more water in the cracks during these free-thaws, the greater, and quicker the damage to the concrete.

Map delaminations by drag chain, hammer or sounding device. The damaged area requires no less than four (4) ports drilled for resin flow, depending on the size and shape of the delamination. This prevents the trapping of water that may be present.

The delamination is normally hollow planes that run along the reinforcing bar. When injecting the delamination, the resin will follow these hollow planed areas and can travel several feet in filling the voids.

CONCLUSION

Epoxy Injection Systems is very effective at repairing concrete cracks, delaminations, and hollow planes when used according to manufacturers recommendations. Job analysis and proper preparation are very important to insuring the maximum performance from the Epoxy Products, or any other concrete repair products. The right equipment is critical. Proper setup continuous mixing epoxy injection machines must always be used with no exception. Injection staff and management must have the training and experience to do the work right the first time. Epoxy injection has to be done right the first time. There is no second chance. So it is critical that your injection work be done by well trained and equipped, experienced personnel.

Epoxy.com Injection Products

Injection Resin

Product #301 Injection Resin, low Modulus – a 100% solids low viscosity epoxy adhesive used to restore cracked structural concrete by the pressure injection method and to grout cracks in a horizontal plane by gravity.

Product #301SC Slow Cure Injection Resin Low Mod is a longer Potlife version of Product #301

Product #301Cold Temperature Cured Epoxy Injection Resin a faster version of Product #301 typically used in Cold Temperature Cure applications, or where a very fast set is needed

Contact Epoxy.com Technical Support Department for more information on Injection and Binary Delivery Systems. 352-533-2167 info@epoxy.com

  • Manual Injection Pump
  • Injection Ports
  • Binary Tubes 75 ML
  • Binary Tubes 150 ML
  • Binary Tubes 300 ML
  • Static Mixing Tubes for Binary Tubes
  • Manual Gun for Binary Tubes
  • Pneumatic Gun

New Clear Methyl Methacrylate Top Coating.

October 31, 2018

MMA CLEAR TOP COATING

Epoxy.com Product #6930

Methyl Methacrylate Technical Data Sheet


DESCRIPTION

Epoxy.com #6930 MMA (methyl methacrylate) SEALER is a 100% reactive semi-flexible medium viscosity methyl methacrylate resin developed as a sealer/topcoat over various Epoxy.com MMA Systems.

Product #6930 MMA SEALER is a chemical resistant coating with improved UV light resistance specifically designed for exterior use such as vehicular parking decks, pedestrian decks, roof decks, pool decks, concrete and steel stairs, ramps, and interior freezer/cooler rooms.

Methyl Methacrylate Product #6930 MMA SEALER is suitable for use in numerous other applications, both indoors and outdoors.

ADVANTAGES

  • Medium viscosity
  • Fast cure for rapid recoat and return to service
  • UV resistance; non-chalking
  • Semi-flexible for exterior use and freezers
  • Meets USGBC LEED criteria for low VOC
  • Chemical resistance
  • Meets USDA requirements
  • Use over wide temperature range even below freezing.

For a complete technical data sheet please see the technical data sheet or contact:
Epoxy.com Technical Support Department at 352-533-2167, 
email me (Norm Lambert) at norm@epoxy.com,
or visit our website at www.epoxy.com   

 


Epoxy Chip Floor Stays Clear

October 19, 2018

epoxy_chip_flooring_263s

Here is the picture of the chip floor – www.epoxy.com/chips.aspx  that that was about 15 years old when the picture was take. It is in a Vermont Interstate Rest area.  It has never been waxed. You can still see the ceiling lights reflecting off the surface. Only maintenance has been to mop it.

Chip Floor install:

Links that will make your Chip Flooring installation better and easier:

Do with Epoxies

Don’ts with Epoxies

Surface Preparation

https://news.epoxy.com/2016/01/25/acid-etching/

Chip Flooring Installation Guide

Job Supplies – for roller applications

 

Chip Flooring Tech data:

Tech data and installation:

http://www.epoxy.com/chips.aspx

http://www.epoxy.com/ChipFlooringInstall.pdf

http://www.epoxy.com/job-supplies.aspx

http://www.epoxy.com/315.htm

http://www.epoxy.com/315bc.htm

 

MSDS:

http://www.epoxy.com/msds/315BC_Part_A.pdf

http://www.epoxy.com/msds/315BC_Part_B.pdf

http://www.epoxy.com/msds/315.pdf

 

Cove:

 

 

Cove information:

www.epoxy.com/720.aspx

http://www.epoxy.com/Seamless_Epoxy_Cove_Installation_720.aspx

 

http://www.epoxy.com/msds/720MSDS.pdf


Epoxy Chip Flooring

December 13, 2017

How to Install Chip Flooring

There are two easy ways to learn how to install our chip flooring.

  1. https://www.youtube.com/watch?v=geh61u3ChgI – the Youtube Video. Please view and like this video.
  2. You can find a version of this that you can print and have at the jobsite at: https://www.epoxy.com/ChipFlooringInstall.pdf

Please visit us at http://www.epoxy.com/ or call customer service at: support@epoxy.com or by calling 3520533-2167.


Happy Holidays

November 29, 2017

Allow Extra Time for Epoxy Orders

As we approach the holiday season, please allow extra time for order processing and delivery,

Extend Epoxy Installation Season into Winter

Holidays mean temperatures are getting colder in many parts of the country . Our company started out as an installation company in Vermont. Summers are very short and winters are very long in Vermont. To stay a viable company, we had to figure ways of working through the winter.

Tenting and heating areas during the winter is time consuming and expensive. The solution is found in resin products that will set in low temperatures. The most durable and cost effective options of installation at cold temperatures is Epoxy and Methyl Methacrylate.

Cold Temperature Cure Resins can also be used as a super-fast setting Resinous Mortar or Coating at normal temperatures. Our Cold Temperature Cure Resins used at normal temperature give you quick turnaround time for small jobs, or larger jobs that require a short turn-around time.

Cold Temperatures Epoxies

Cold Temperature Cure Epoxy Resins allow installation to be done at low temperatures as low as 35°F., (although it sets a lot faster at 40°F) expanding your epoxy coating and epoxy flooring installation season. Epoxy.com Cold Temperature Cure Epoxy Resins can also be used in cold storage areas like food processing areas, where the temperature cannot be raised higher than 35° F or so. Normal cured epoxy typically requires 50°F or more.

Depending on how you mix the aggregate into the products below, they can be used as a mortar for overlays, or a grout for sealing between other hardened construction materials.

Commonly Used Cold Temperature epoxies

Product #1 Cold Temperature Cure Epoxy Coating is 100% solids and specially formulated coatings for cold temperature applications. Cold Temperature Epoxy Coating #1 is able to cure at temperatures as low as 35°F. It is has Zero (0) VOCs. Since it has no VOCs, it has no solvent so it meets the strictest possible standard for a low VOC coating. It is often used in coolers and food preparation areas that require constant low temperatures. Product #1 Cold Temperature Cure Epoxy Coating is also frequently used in room temperature applications to meet super-fast cure, limited shutdown needs.

Product #10 Cold Temperature Curing Epoxy Mortar Resin – This product has a low modulus of elasticity (flexibility) and is Low Viscosity. The low viscosity allows heavy loading of the right fillers. The heavy filler loading helps not only to save money, but helps to maintain better thermal coefficient with respect to concrete and steel. The low modulus of elasticity prevents it from being brittle making it less vulnerable to thermal coefficient differences. It also gives it better impact resistance.

You can find more information on cold temperature cured epoxy at: http://www.epoxy.com/EpoxyColdCured.aspx.

Please send me your questions to me by email to norm@epoxy.com


Moisture Tolerant Epoxy

October 23, 2017

Moisture Tolerant

Epoxy Primer

and Base Coat

Epoxy.com Product #100

Can be Used as a Primer Over Concrete as New as 5 Days


Epoxy.com Product #100 Moisture Tolerant Primer and Base Coat consists of a unique water based epoxy technology which allows the contractor to install epoxy resin floor systems and other moisture sensitive floor coverings on new concrete (5 days old) without fear of moisture entrapment. Epoxy.com Product 100 Moisture Tolerant Primer and Base Coat is applied in a two coat application. Epoxy.com Product 100 Moisture Tolerant Primer and Base Coat is the primer/basecoat used in various Epoxy.com Products

Epoxy.com Product #100 Moisture Tolerant Primer and Base Coat is a unique two-component, moisture tolerant, extremely high density, chemically enhanced epoxy based product which reduces the passage of water vapor and moisture through slabs on, above or below grade, thus eliminating delamination and blistering of adhesives, floor coverings, resin floor systems, epoxy terrazzo and coatings.

Epoxy.com Product #100 Moisture Tolerant Primer and Base Coat controls water vapor transmission levels for the installation of most floor covering systems, including VCT, sheet vinyl, carpets, wood, laminates, epoxy resin flooring and epoxy terrazzo.

Advantages

  • Vapor and water barrier.
  • Can be placed on new concrete in as little as 5 days.
  • Water based – low VOC.
  • Highly moisture tolerant
  • Barrier against radon and other gasses
  • Compatible with most flooring systems – conventional, and seamless epoxy flooring systems.
  • Does not support the growth of mold.
  • Easy to install with little down time.

Considerations

  • Substrate must be at least 50° F during installation and curing
  • Substrate must be free of dirt, sealers, waxes, and other foreign materials that would interfere with proper bonding.
  • Must be installed a minimum of 1/8 for use with moisture sensitive floor coverings.

 

Application

Surface preparation

Surface preparation is the most critical portion of any successful resinous flooring system application. All substrates must be properly prepared as outlined in Epoxy.com Surface Preparation Procedures. Epoxy.com Technical Support Department is pleased to answer any questions.

Mixing

Epoxy.com Product #100 Moisture Tolerant Primer and Base Coat is a two-component material. Do not alter mixing ratios in any way. Part I and Part II are supplied in the correct mixing ratios. Always mix a complete unit in the proportions supplied.

Stir material for approximately 3-4 minutes to form a homogeneous consistency using a slow speed drill and “Jiffy” blade. Do not entrap excessive air. Scrape all sides and bottom of container to ensure thorough mixing.

Priming

Prime using Epoxy.com Product #100 Moisture Tolerant Primer and Base Coat thinned 10% with one (1) pint of potable water per 1.25 gallon unit for good
penetration. Apply with a squeegee and short nap roller to the properly prepared substrate. Back roll with the short nap roller to achieve a uniform coverage. Allow to cure hard enough for foot traffic, about 3-4 hours at 75 degrees F.

Body Coat

Apply one (1) Part of Epoxy.com Product #100 Moisture Tolerant Primer and Base Coat to 4 parts of B. Thoroughly mix with a low speed drill and Jiffy blade until uniform. Mix with low speed drill until uniform and no lumps. Apply with trowel, or squeegee. Allow to self-level and backroll with a looped roller. A 1.25 gallon unit will
cover 30 sq. ft. @ 1/16″.

Broadcast surface with broadcast sand to excess (30-50 lbs./100 sq. ft.) with Epoxy.com Product #77 to achieve 1/8 inch. Sweep and vacuum excess or loose sand after hardening (16-24 hours, depending on temperature).

Top Coatings and Overlays

Apply top coatings or resin floor system directly over broadcast surface. Prime surface with appropriate Epoxy.com primer as required. For vinyl flooring and other floor coverings consult with manufacturer of floor covering.

Physical Properties

Material 2-component epoxy
Density 12.70 lbs/gallon
VOC Content, Mixed < 1 g/L
Solids by Volume 59%
Flash Point: Part A

Part B

>212°F

170 °F

Mixing Ratio 1:4 by Vol.
Pot Life, Approximate 60 minutes @ 75°F (24°C)
Open to Foot Traffic After 16 hrs. at 73°F (23°C)
Curing Temperature Minimum 50°F
Full Cure and Maximum Resistance 7 days
Hardness, Shore D ASTM-D-2240 70-75
Compressive Strength  ASTM-C- 579 6500 psi
Flexural Strength ASTM-C-580 2100 psi
Adhesion To:

-New concrete (5 days)

-Moist concrete (28 days)

-Dry concrete (28 days)

 

110 psi

550 psi

580 psi

Temperature Resistance:

a)Continuous:

-Dry heat

-Humid

b)Intermittent:

-High pressure water

-Dry heat

140°F (60°C)

113°F (45°C)

185°F (85°C)

149-185°F (65-85°C)

Maintenance

After completing the application of Epoxy.com Product #100 Moisture Tolerant Primer and Base Coat and the topcoats or floor covering system, the installer should provide the owner with maintenance instructions relevant to the specific topcoats or floor covering. If floors become slippery due to animal fats, oil, grease, or soap film, clean and rinse thoroughly.

More Information

For more information please visit our website at http://www.Epoxy.com, email me at norm@epoxy.com or call Epoxy.com Technical Support Department at 352-533-2167.


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