Epoxy Injection of Structures Part 2

February 14, 2017

Infrastructure Repairs Using Epoxy

Epoxy Concrete Injection Epoxy Wood Injection, epoxy crack repair

Epoxy Structural Concrete and Wood Repair / Waterproofing

The following article is written with enough information about resin injection systems to help protect the Owner from the misuse or improper installation of an injection systems.   For more information contact me: Norm Lambert.

This is the second in a series on Infrastructure Repairs Using Epoxy. Part One was Introduction to Epoxy Injection.  If your have not read that yet you may want to go back and read it before you proceed with reading this.

Part 2: Crack Analysis Before Epoxy Injection

As with all repair and rehabilitation of concrete, the initial job analysis is by far the most important step. Epoxy Injection Resin will weld concrete cracks but, of course, will not repair the cause of the cracking.

Analyze each potential injection application to determine the exact cause or causes of the cracking. Correcting the cracking problem can be fairly simple, or may be difficult involving design changes.

Consult a structural engineer when design changes are necessary. Do this before starting the injection. Repairing cracks by Injection is effective after these design changes. Prevent future cracks by fixing the original cause of the cracking, when ever possible.

Parking garages are an example of cracking problem that require a structural engineering analysis.Epoxy.com Epoxy Inection Often inadequate design for expansion/contraction is the cause for parking garage structural cracking. Avoid weld injecting a crack if there are not enough expansion joints. Sometimes flexible overlays such as Epoxy.com System # 495 can be used to overcome this defect. This does not however encapsulate the rebar in a way that will totally stop the premature deterioration of the steel. Often times additional joints are needed, thus the analysis of cracking problems is critical.

Bridge decks and slab on grades can often be repaired with Epoxy.com Product #684LV crack healer and sealer and save some of the cost of doing epoxy injection.

Next in the Injection Series:

Part 3: Setting Epoxy Injection Ports

For more information visit our website at http://www.epoxy.com, email us at info@epoxy.com or call our technical service department at +1 (352) 533-2167.


Fixing Floor Damage with Epoxy

September 6, 2016

Industrial and commercial floors take heavy abuse. The older the flooring the worse shape it is in. Conventional wisdom says that such a breakdown of the floor is inevitable. There are steps you can take to protect your floor before it gets damaged. Once the damage has happened there are steps you can take to permanently repair most damaged floors.

Floor joints, are the source of many industrial flooring problems. The purpose of these joints (in original construction) is to give the concrete a controlled place for the concrete crack as it shrinks. They sometimes are called expansion joints. In theory they will expand when the concrete gets hot.Indoors, where temperature is somewhat stable, most of their function of these joints has ended after 28 days or so of concrete. Concrete does most of it shrinking in the first 28 days.

wheel across empty  joint

A wheel across an empty Joint

The downside of these joints in the concrete is that it gives a place for the concrete to start chipping away. See the highlighted (in blue) corners in the illustration to the right. When wheels pass across the top it hammers the edge in the opposite side of traffic flow. This breaks off tiny pieces of concrete (again drawn in blue as a triangle at the edges of the concrete joint). The bigger the area chipped out earlier, the bigger and faster additional chipping happens. Time goes on and “pot holes”start to form in the concrete joint in direct proportion to the number of times wheels have hit a given spot.This can become a major trip and forklift hazard.

The best way to prevent this concrete damage is to fill the joints with Epoxy.com  – Product #11-100% Solids Flexible Epoxy Joint Filler for Saw Cut Joints. The #11 is semi-flexible so it still allows some joint movement but (unlike caulking) is firm enough to support the hard wheel as it passes over the joint, virtually

wheel across a filled joint

Wheel Supported by #11 as it passes over the joint.

eliminating the pounding and chipping effect on the sides of the joint. See in this diagram how the #11 supports the wheel as it passes over the joint.

For application on flat surfaces Epoxy Joint Filler for Saw-Cut Control Joints Product #11 can be poured or pumped from an Epoxy.com Binary Pumping Systems. In areas where cosmetics are important mask both sides of the substrate before applying the material.

If the areas are bigger you can use Epoxy.com Product #12  blended with silica sand to make a mortar to fill epoxy_joint_repairthe pothole, then re-cut your joint with a concrete saw as shown in the diagram here. The Product #12 can also be mixed with silica sand and used to repair areas in the center of a slab that might have started as a random crack or because of a chemical spill or due to impact damage.

If you need the epoxy mortar to set at a lower temperature and/or faster Epoxy.com Product #10 Epoxy Mortar Resin in fast or cold cure may be the best option.

Here is an outline of getting your flooring ready and some of the types of flooring we can offer you.

I can easily calculate how much material you will need for your floor.  The patching will take a little more effort and some estimation of the geometry of the repairs from you:

  1. Joints
    1. Fill joints with Epoxy.com Product #11 – epoxy.com/11.aspx.If there is spalling at the joint see “pot hole” repair below.
  2. Pot holes
    1. Fill shallow areas with a blend of Epoxy.com Product #12 – epoxy.com/12.aspx -And Epoxy.com Product #71 – www.epoxy.com/71.aspx fumed silica
    2. Fill Deep areas with a blend of Epoxy.com Product #12 and product #82 Mortar Blend Aggregates
  3. Priming
    1. Oil Saturated areas (if any) – Epoxy.com Product #201 – epoxy.com/201.aspx
    2. Areas with moisture vapor transfer issues (if any – see epoxy.com/surfaceprep.aspx ) with Epoxy.com Product #830 – www.epoxy.com/830.aspx
    3. All areas not subject to the items above primed with
      1. Epoxy.com Product #12 – www.epoxy.com/12.aspx or
    4. Epoxy.com Product #899 – www.epoxy.com/899.aspx.
  4. Floor Coating – High Build
    1. High build all purpose epoxy floor coating:  Epoxy.com Product #1 – epoxy.com/1.aspx or
    2. High build mid range chemical resistant epoxy floor coating: Epoxy.com Product #2 – epoxy.com/2.aspx or
    3. High build highly chemically resistant epoxy floor coating: Epoxy.com Product #633 – epoxy.com/633.aspx
  5. Seamless Flooring
    1. Chip Flooring – epoxy.com/chips.aspx or
    2. Solid Colored Standard chemical resistance Flooring
    3. Product #24 Pigmented mortar – www.epoxy.com/24.aspx and silica sand
      1. Top coated with Product #1 – www.epoxy.com/2.aspx  or
    4. For high chemical resistance Epoxy.com Product #2 – epoxy.com/2.aspx
    5. Epoxy Quartz Flooring – www.epoxy.com/15.aspx.
  6. Chemical Resistant Epoxy Flooring
    1. Product #630 and silica sand – www.epoxy.com/630.aspx
    2. Product #633 and silica sand – www.epoxy.com/633.aspx 

Still not sure? Email epoxy.com Technical Support info@epoxy.com  call us at 352-533-2167. We will help you select the right product for your job. We can also help you estimate how much of it you need, and quote you on those quantities.

You can also visit us at www.epoxy.com 24 hours a day 7 days a week.

 


Tombstone Repairs with Epoxy

August 22, 2012

A technician who uses a non-Epoxy.com product to repair tombstones wrote me recently looking for help with problems that he was having.  He goes on to say that the epoxy that he uses never fails, but rather the stone fails. When a secondary break occurs, the stone always re-breaks about 2 mm (about ¾ inch) above or below the epoxy joint.  The epoxy attached to about 2 mm of the stone and holds well.

He asked me if the epoxy shrinks so much that it will ‘ pull away ‘ from the stone it’s attached to, and in his case, it pulls about 2mm of stone with it.

No I doubt it is epoxy shrinkage causing the problem. High quality epoxy has little or no shrinkage.  It would have to be a very poor quality epoxy to be shrinking enough to do that.

The reason his epoxy is not working is that it is too rigid.  His existing rigid material has a “high modulus of elasticity”.  A material with “high modulus of elasticity” is a material that is stiff and/or rigid.  A “low modulus of elasticity” material is semi-flexible, and is not rigid or brittle.

Smaller pieces of the stone structure (in this case a tombstone) and pieces not in touch with the ground tend to get hotter and cooler faster than the larger pieces and pieces with ground contact. This is called “differential timing of the event”. For example the top of a tombstone can be heated and cooled on 5 sides, the top and the 4 sides. The base of the tombstone which is buried in the ground has earth or stone on all of its surfaces.  This earth and stone tends to keep the temperature of the base more stable by insulating it and slowing the change in temperature. This works much like the insulation in your house slows temperature changes inside your house.

When an object like a piece of stone is heated it expands (gets bigger).  When an object cools it contracts (gets smaller).  For example 100 feet of concrete will be 1 inch longer once it is heated 100 degrees F.  That is why expansion joints are cut into concrete.

In the case of tombstones all the pieces of the same type of stone have very similar if not identical “coefficient of expansion”. Since the pieces are positioned with potentially different timing of heating and cooling there is a “differential timing of the event” (see above). The result is stress areas you are seeing in the closest weakened plane in the stone near the bond line.

Product #2005  was specifically designed for tombstone (monuments) and/or stone bonding, or repair. Epoxy.com Product #2005 is very strong yet it is has a “low modulus of elasticity” (semi-flexible).  The low-modulus of elasticity helps to absorb differential movement (two sections of stone heating and cooling at different times), making it much less likely to cause a stress area in adjacent weakened planes.

Camouflage the bond line rubbing stone dust(ground off the original stone or a similar colored stone) into any exposed epoxy material while the epoxy is still “wet”. That way the dust will stick in the wet epoxy making the epoxy difficult to impossible to see.

Please send your additional question and blog ideas to norm@epoxy.com

 


Why Use Epoxy.com Products in “Green” Buildings?

August 20, 2012

110614_2044_EpoxyChipFl10.pngEpoxy.com’s 100% solid products (which are most of our product line) are included in many “Green” buildings. The logic for that is this:

1. Epoxy.com 100% solid products have  no VOCs. So you are reducing the carbon emissions.

2. Typical Epoxy.com 100% solid systems have done their job for decades, and there is no reason to believe they will not last for decades more. I personally have jobs that I installed with them that go back as much as a third of a century, that are not even starting to show signs that they will need replacement. That is the ultimate in reuse.

3. There is no need to recycle a product that can be reused for decades, but you can use recycled materials like glass aggregate in the epoxy matrix.

Epoxy.com encourages our customers to order material as they need it and to use all their materials before their expiration. That is why we do not require large stocking orders from new dealers, like most other companies. We want our customers to use up material they buy from us and not have any for it run out of shelf life. However, if Epoxy.com products do run out of shelf life, they are typically mixed and cured before disposal as is consitered in under most if not all local regulations as inert as common trash.

You can find more information about Epoxy.com Zero (0) VOC products at: https://www.epoxy.com/zero_voc.aspx

www.epoxy.com – Epoxy.com Home Page.

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Epoxy.com Catalog of Products

November 28, 2010

Epoxy.com Product Catalog

Here is a list of the current Epoxy.com Products.  In addition to the products below, we also have products which we can “custom” make to your specifications. This page is the most  frequently updated on our website.  So please check this page often, to see our latest product additions.

Injection and Binary Delivery Systems

  • Injection Machines
  • 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

Misc. Products

  • Fiberglass Tape 4 and 6 inch wide
  • Fiberglass Woven For Reinforcement
  • Gage Rake for overlays
  • Mixing Paddles – drill mixers, Speedy mixers, Mud and Resin Mixers, and Cast head mixers
  • Spiked Rollers- for overlays
  • Spinney Rollers – for overlays
  • Shed Resistant Roller Covers
  • Professional Rollers Covers
  • Jumbo  2 1/4 Diameter Core Roller Covers
  • Perforated Core Roller Covers
  • Roller Handles
  • Floor Squeegees
  • Serrated Edge Floor Squeegees
  • Wood Back Squeegees
  • Mini Roller Covers and Frames
  • Rubber Gloves
  • Paint Brushes
  • Bondable PTFE Cut to Order
  • Graffiti Cleaner
  • and more …

Skip Navigation Links

Epoxy.com Home Page

Proper mixing and installation is critical to the optimal success of all product.  See Installation Tips, Techdata, & MSDS for more details on our products.  Be sure to contact us with any questions and/or concerns that you have.

For more information please contact:

Epoxy.com
A Division of Epoxy Systems, Inc
20774 W. Pennsylvania Ave.
Dunnellon, Florida 34431
Over 350 products,
Since 1980
Florida & Vermont
USA
Office Hours: 9AM-4PM Eastern Time (6AM-1PM Pacific Time).
Closed 12Noon-1PM Eastern Time for Lunch

321-206-1833   Customer Service – Ordering and Order Status
                          Katey Fontaine, VP – Customer Service Director
sales@epoxy.com

714-657-3826  Technical Support
352-533-2167  Norm Lambert, President – Technical Support Director 
info@epoxy.com

352-489-1666   Accounting and Administration
Debby Lambert, CEO, and CFO
office@epoxy.com

352-489-1625   Fax line to all Departments
www.epoxy.com

24 hour Hazmat Emergency Telephone Response Service -1-800-633-8253

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We accept MasterCard, Visa, American Express, Discover, or Wire Transfers.

Copyright © 1994-2010 EPOXY.COM a division of Epoxy Systems, Inc. – Florida and Vermont.  All rights reserved.


Common Epoxy.com Epoxy Construction Resin Systems

August 3, 2010

Common Epoxy.com Product Applications

Epoxy.com Products by Types of Uses


Epoxy.com has hundreds of products that can be used in combination to
produce thousands of different systems. This insures the Right Epoxy and/or
Other Construction Resin Product for you Job. Here are the most commonly
used Epoxy and Construction Resin Systems:

  • Air Plane Hangers – Epoxy.com Products most
    frequently used for seamless air plane hangers.

  • Garages
    –  – Epoxy.com Products most frequently used for high
    end residential epoxy seamless garage floor.

  • Outside Decks and Drive Ways
    – Epoxy.com Products most frequently used
    for Seamless Decks and Drive Ways.  These products are specially
    designed to handle the punishment of the sun and temperature extremes.
  • Product Catalog – A
    complete list of Epoxy.com Products By Product Number.
  • Bonding Systems  –
    Almost all Epoxy.com epoxy resins can be used as an epoxy bonding and 
    adhesive systems.  However, the thicker epoxies (epoxy gels) typically
    make the better adhesives, because they are easier to use when Appling a
    thick layer.  Below is a list of medium to very thick epoxies.  These
    epoxies are designed with the primary function of bonding various
    materials to other materials. Epoxy.com Gel Adhesives Systems are called
    by a number of different terms throughout the industry, including but
    not limited to: Epoxy Bonder, Epoxy Adhesive Systems, Epoxy Gel Adhesive
    Systems, Epoxy Bonding Systems, Epoxy Gel Patching Adhesive, etc.

  • Waterproofing

    – Most Epoxy.com Products are waterproof by nature.  The products
    you find here are the work-horses of
    waterproofing.
  • Coating Systems
    Here are listing of Epoxy.com epoxy coatings and urethane coatings. The
    Epoxy.com Products listed below are either pigmented or available in
    pigmented. 
  • Chips Flooring – The use of color chips can
    change all that! Color chips are increasingly being used in combination
    with “wet” products such as Epoxy.com
    Product #315 Seamless Polymeric Multi-Colored Flake Chip Flooring
    Resurfacing System
    to create decorative seamless flooring with more to offer than other ornamental
    products…Quality! Due to their easy application, these products can be
    used by both professionals and skilled do-it-yourself enthusiasts.
  • Primers
    and Sealers
    – Epoxy.com has a wide variety of primer and sealers
    listed here is a listing of the most
    popular ones.
  • Seamless Flooring
    – Epoxy.com Products that were specifically designed for seamless
    flooring systems.  Epoxy.com 100% Solids Epoxy Coatings and
    Flooring resins can be used in conjunction with broadcast aggregates and
    trowel down aggregates to create a highly durable seamless epoxy
    flooring systems.

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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Epoxy Injection – Minimum Crack Size

April 19, 2010

How Small a Crack in Concrete Can Be Epoxy Injected?

Norm:
Typically a crack that is 30 or 35 mils or larger (about 1/32 inch) can be epoxy injected. You can get into even smaller cracks under the right conditions with Epoxy.com Product #308 Ultra Low Viscosity Injection Resin for Load Bearing Applications an Ultra-Low Visocosity Epoxy Resin System for use as epoxy injection or low viscosity epoxy mortar resin. It is 100% solids and is mixed 2:1 by volume. Meets or exceeds the requirements for ASTM C881 Types I and IV, Grade 1, Classes B &C. Learn more on the Epoxy.com Website or contact Epoxy.com Technical Support by email or call 352-533-2167.

One of the most versatile, problem solving products available in epoxy systems today is Epoxy Injection Resin. Structural restoration of concrete by epoxy injection is very often the only alternative to complete replacement. It therefore results in large cost savings. Injection protects the rebar and stops water leakage.

Epoxy Injection Resin is a system for welding cracks back together. This welding restores the original strength and loading originally designed into the concrete. Epoxy injection restores the structural qualities the concrete design intended. In other words under most conditions it makes the concrete as good as new. It creates an impervious seal to air, water, chemicals, debris, and other contamination.

A crack, obviously, is a sign of failure caused by stresses, inadequate design, improper curing, etc. One of the dangers of a structural crack is the effect that it has on the reinforcing bar. The reinforcing represents one of the main structural values of the concrete.

Cracks left unprepared allow moisture, road salts and other contaminants to penetrate and attack the rebar. The rebar deteriorates, losing the structuEpoxy Injection of concreteral value. Loosing the entire structure is often the result.

Epoxy injection resin has two purposes. First, it effectively seals the crack to prevent the damaging moisture entry. Secondly, it monolithically welds the structure together. Most people assume that this welding of the structure is the most important result of the repair. Actually what is most important is the sealing.

The sealing properties of the injection prevents premature deterioration of the reinforcing. This can be of equal, or in some cases greater importance than the structural welding. It would theoretically always be desirable to get this welding effect.

Crack Analysis

As with all repair and rehabilitation of concrete, the initial job analysis is by far the most important step. Epoxy Injection Resin will weld concrete cracks but, of course, will not repair the cause of the cracking.

Analyze each potential injection application to determine the exact cause or causes of the cracking. Correcting the cracking problem can be fairly simple, or may be difficult involving design changes.

Consult a structural engineer when design changes are necessary. Do this before starting the injection. Repairing cracks by Injection is effective after these design changes. Prevent future cracks by fixing the original cause of the cracking, when ever possible.

Parking garages are an example of cracking problem that require a structural engineering analysis. Often inadequate design for expansion/contraction is the cause for parking garage structural cracking. Avoid weld injecting a crack if there are not enough expansion joints. Sometimes flexible overlays such as Epoxy.com System # 485 can be used to overcome this defect. This does not however encapsulate the rebar in a way that will totally stop the premature deterioration of the steel. Often times additional joints are needed, thus the analysis of cracking problems is critical. more…


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