Epoxy Injection of Structures Part 3

February 24, 2017

This is the third in a series on Infrastructure Repairs Using Epoxy. Part One is  Introduction to Epoxy Injection.  Part 2 is Crack Analysis Before Epoxy Injection

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

Port Setting

It is extremely important that if drilling to use the right tool. to set drill type ports use a vacuum swivel drill. That is a drill with vacuum attached swivel drill chuck and hollow a drill bit.

Concrete dust can be detrimental to the injection processes in several ways. Any dust remaining in the drill hole near a crack can combine with the very low viscosity injection resin. This thickens your resin turning it into a weak paste. This paste can slow or even block the resin flow. Drilling very tight crack with a solid drill forces dust into the crack. This seals the crack from resin flow. Do not allow shortcuts in the drilling procedures!  However, for most applications the surface port is the easiest and most effective method.Epoxy Injection Surface Port

Port Spacing

Determining the spacing of ports is done by a highly experience applicator. This spacing is a factor of the tightness of the crack and the depth of the concrete substrate. Spacing is normally between four (4) and eight (8) inches.

Port Setting and Sealing

Align ports directly over cracks. That allows injection resin to flow into the crack. Seal surface cracks. Sealing the exterior of cracks is done with Epoxy Gel type Bonder.

Testing The System

Test cracks that are ill defined, or if dust or debris is in the crack. This testing may be done by injecting water into the crack area.

Water left in the cracks will not effect the injection process or the curing of the Epoxy.com Injection Resin. Heavier injection resin forces the water out the cracks. Water injection helps clean the cracked areas. More important, is that it helps avoid the unexpected. This process of flushing the cracks is commonly skipped by more experience contractors, who can tell if there will be a flow of resin, by just looking at them. However, when in doubt water testing is a must.

If the cracks contain algae, chlorinated water containing copper sulfate is injected. After pumping this mixture is left over night. The next morning the crack is flushed by pumping fresh water, into it. This flushes it out before resin injection begins.

Efflorescence builds up on the bottom of a crack in a horizontal slab. Water in the crack extracting soluble calcium hydroxide is the cause. The water evaporates at the surface leaving the lime, which later reacts with the carbon dioxide in the air to form limestone. The inside of the crack, is frequently free of limestone and making it suitable for injection.

Part 4 of this series: Injection Resin Materials Product Selection.

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.

 


Secondary Chemical Containment

February 7, 2017

You can easily build containment in the middle of an existing slab

Building a secondary containment structure in the middle of an existing facility is very common and effective way to protect the facility structurally as well as protect the environment.  It is very easy to do.  Here is how:

  1. Grind the area where the curb will go to bare concrete – www.epoxy.com/surfaceprep.aspx.
  2. Drill holes into the concrete and fasten #4 bar into the concrete with Epoxy.com Product #2006 – www.epoxy.com/2006.aspx – Gel Adhesive. Allow Epoxy to cure overnight.
  3. Form the area to receive concrete curb.
  4. Coat the floor area in the bottom of the forms to receive the concrete for the curb with Epoxy.com Product #2007 – https://www.epoxy.com/Epoxy_Fresh_Concrete_to_Hardened_Concrete_2007.aspx – Wet to dry concrete adhesive. Pour your concrete before the #2007 becomes tack free. That will make it as if the curb and the concrete floor had been poured at the same time.
    1. An alternate method to this is to install concrete brick around the area bonding in place with Product #2006. This will help to reduce waiting for the concrete to cure if you use the poured concrete method above.
  5. Allow the concrete to cure – www.epoxy.comsurfaceprep.aspx.
  6. Cove the inside of the containment curb with Epoxy.com Product #720 – https://www.epoxy.com/720.aspx – coving resin allow to cure overnight.
  7. Prime the inside of the containment area with Epoxy.com Product #12– www.epoxy.com/12.aspx  – Chemical Resistant Primer, and allow to cure overnight.
  8. Install 2 coats of Epoxy.com Product #633 – www.epoxy.com/633.aspx – Chemical Resistant Novolac Epoxy Coating.

Summary

Doing an effective job of building secondary is easier than you may think. For more information visit our website at http://www.epoxy.com, call our technical support department at 352-533-2167 or email us at info@epoxy.com.


Epoxy Installation Instructions

January 5, 2017

How to Install Epoxy.com Resin Systems


INSTALLING EPOXY RESIN SYSTEMS

Proper mixing and installation is critical to the best success of all epoxy products.  This page is to help you find the right installation information that you need to install Epoxy Resin Systems.

Surface Preparation for Epoxy Resin Installation

All quality installation start with quality surface preparationThis guide will help you to know how to properly prepare your substrate for installation of Epoxy or any other high quality resin system. Improper surface preparation could turn what seems to be a simple process into a lengthy, difficult repair.

Do and Don’t do with epoxy.

These guides will help you to not make the common mistakes that people do and the things the people don’t do that can lead to a problem or even a failure of your epoxy resin installation.

Job Supplies Required to Install Epoxy Resin Systems

This list is  a suggested list of the materials that you will need for most typical epoxy coating systems. This list is also useful for installing roller applied coating systems like Epoxy.com Chip Flooring.

Epoxy Installation Guides

Epoxy Chip Flooring System
Installation Guide

Epoxy Chip Flooring Installation Guide. Floors have a special role to play in interior design. The heavy technical demands made on floors often make the use of certain decorative products simply impossible. The use of color chips can change all that! Color chips are increasingly being used in combination with “wet” products such as Product #315 Seamless Polymeric Multi-Colored Flake Chip Floor Resurfacing System to create decorative floors with more to offer than other ornamental products…Quality! This installation guide takes you step by step through the installation of Epoxy Chip Flooring Product #315.

Product #1 High Build Epoxy Coating 21-27 mils – All Purpose Epoxy Floor Coating Installation Guide.

Product #1 All Purpose High Build Epoxy Floor Coating a two component, zero (0) VOC, 100% solids epoxy Hi-Build epoxy coating used for high foot traffic and light to moderate forklift traffic areas where abrasion resistance is required; for protection against mild corrosion and as a decorative waterproof coating for walls, floors, tanks, etc. Installation Guide For All Purpose High Build Epoxy Floor Coating #1.

1ESD / Conductive – Electrostatic Dissipative Epoxy Floor Coating Installation Guide

Conductive Epoxy Floor Coating Installation Guide –  Product #1ESD Epoxy Coating System consists of Product #899 Epoxy Primer followed with one finish coat of Product #1ESD/Conductive Epoxy Coating. Product #1ESD/Conductive is available in pigmented finish only. Product #1ESD Epoxy Coating System will test in the �ESD� range, between 1,000,000 and 1,000,000,000 ohms electrical resistance when Product #1ESD/Conductive is applied over a non-conductive primer (or non-conductive bodycoat), and produces a 12-15 mil thick ESD floor coating system. This guide will take tell you how to install the Conduct Epoxy Floor Coating.

Product  #2 High Chemical Resistance Epoxy Floor Coating Installation Guide

Chemical Resistant Epoxy Coating Product #2 is a two component, 100% solids, Zero “0” VOC epoxy chemical resistant coating used to protect chemical concrete, steel and other structural materials from non-oxidizing acids and alkalines for both interior and exterior applications.This guide will take take you through the steps to
install the Conduct Epoxy Floor Coating.

Product #15 Chemical Resistant Epoxy Quartz Flooring

Product #15 Chemical Resistant Quartz Flooring Installation – Single Broadcast Installation Method

Product #633 Novolac Highly Chemical Resistant Novolac Epoxy Floor Coating Installation Guide

Product #633 Novolac Epoxy Chemical Resistant Epoxy Coating is a 100% solids epoxy Novolac coating ideal for harsh chemical and solvent resistant applications. Product #633 Novolac Epoxy Chemical Resistant Epoxy Coating is used in secondary containment, solvent storage, pump pads, trenches, and other high exposure areas. This Installation Guide will help you install Product #633 Novolac Epoxy Chemical Resistant Epoxy Coating. You can also find more information with pictures about installation on this page the Epoxy.com Blog.

Epoxy Injection Installation

Epoxy Injection – This Guide will take you through the basics of doing epoxy injection.  Epoxy injection is one of the most economical, to make a structural repair and waterproofing in cracked concrete.

Additional Installation Guides

These are just a few or our most popular products for additional products and guides pleas contact us at:

 For more information visit our website at: www.epoxy.com , call technical support at 352-533-2167 or email us at info@epoxy.com.


Cold Temperature Epoxy

November 18, 2016

Installing Epoxy in Coolers and Cold Temperature

Extend Epoxy Installation Season into Winter

I have spoken on this subject here before but this time of year I get a lot of calls and emails about installing epoxy in cold temperatures. 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


Chemical Resistant Epoxy Selection

October 20, 2016

Requirements for a Chemical Resistant Epoxy or Vinyl Ester


Our Epoxy and Vinyl Ester product lines has extensive uses in Chemical Containment
and Chemical Resistance projects. The kind of product and systems we recommend are
based on a number of factors.  First we need to know exactly what you are doing:

  1. Are you patching concrete that has been damaged already? If so what is the extent
    of the damage?
  2. Do you need a secondary containment coating? If so what kind of traffic (if any)
    will this area see? Many of our systems will handle very heavy traffic.
  3. Are there any cracks that need repairing? If so how many lineal feet of cracks
    are there, what is the average depth and what is the average width. Repairing the cracks
    is the first step in making your project water and chemical tight.
  4. Are you looking to grout tile? We have chemically resistant Epoxy Tile Grout that
    has excellent chemical resistance.
  5. Is there any petroleum oil saturated concrete in the area. If so we have a product
    for that too.
  6. Is there any moisture vapor that is being transmitted through the floor?  We
    have solutions for that so please bring that to our attention when you contact us.
  7. Is this in an area where Static Disruptive or Conductive materials are needed (typically
    only in an explosive environment or where delicate electronics must be protected
    from static discharge).
  8. Total square footage of area requiring Chemical
    Resistant Epoxy or Vinyl Ester.

Then we will need to know some specifics about the chemical you are trying to protect
against:

  1. What is the specific chemical (or chemicals) that you are trying to resist against?
  2. What is the specific concentration of the chemical (or chemicals)?
  3. What is the duration of the exposure, before it will be cleaned up (if ever)?
  4. Is the exposure at an elevated temperature? If so what is that temperature, and
    how long will the chemicals be at this elevated temperature

If you have this information when you contact us, we can quickly help you to decide
what chemical resistant system is best and most economical for you.

Here is some additional reading that might interest you.

logo

For more information contact Epoxy.com Technical Support at info@epoxy.com or by calling us at 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.

 


Patching Vinyl Ester Floors With Novolac

July 28, 2016

A customer writes:

“We have a dairy processing and packaging facility that was built circa 1994.  At the time of construction we chose to install a flooring system which was vinyl ester based with fiberglass mat.  The floor has held up quite well in areas where it had a good bond.  The failures we have seen are in areas that covered either an expansion joint or control joint in the concrete.  In these areas the flooring has delaminated from the concrete.  Where possible we have made a clean cut through the flooring to an area where we had a good bond and left the concrete exposed.  Other failure areas are around floor drains.  We have made repairs with quick curing epoxies in the past but these don’t seem to bond well to the existing vinyl ester flooring. 

“Having a manufacturing facility with only one down day limits our ability to make substantive repairs.  During a search for low or no VOC  flooring systems I you folks.”

I have personally made many thousands of square feet of floor repairs that sounds exactly like the issues and conditions that you are describing.

Here is what I did to permanently resolve the issue, at least in the patched areas.

  1. Cut back the edges of the delaminated areas back to a point where the vinyl ester is well attached.
  2. Prep the concrete under the failed area and the edges of the old material – epoxy.com/surfaceprep.aspx.
  3. Prime with Epoxy.com Product #12 – epoxy.com/12.aspx
  4. Install a trowel coat of Epoxy.com Product #630 – epoxy.com/633.aspx and
    1. Epoxy Mortar Blend aggregate #82 Mortar Blend Aggregate
    2. Allow to cure hard to the touch and cool.
  5. Glaze with a neat coat of Epoxy.com Product #633 with optional Anti-skid – http://epoxy.com/non-skid-additive-polycarbonate-aggregate.aspx

Please email your additional questions to norm@epoxy.com or visit http://www.epoxy.com .


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