Use MatchCrete Clear and matching rock to repair exposed aggregate surfaces.
Exposed Aggregate Surface Repair with MatchCrete™ Clear.
All posts by Kelton Glewwe
Concrete Spall Repair with 10 Minute Concrete Mender™
Hardline Concrete and Masonry in Minnesota sent us a video showing how to repair a concrete spall using Roadware 10 Minuet Concrete Mender in bulk. 2-Gallon kits.
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Heavy Duty Contraction Joint Rebuild Application For High Traffic Areas
Using Roadware 10 Minute Concrete Mender.
Remove loose material and create a shelf on both sides of the joint with a minimum profile of 1.5” deep and 2” wide on each side. Vacuum and thoroughly remove dust and contaminates.
Create a repair base by filling repair area halfway to grade with bulk mixed 10 Minute Concrete Mender™ combined with 10-20 grit silica sand.
Use a ratio of 1 Part mixed Concrete Mender to 2 parts silica sand. Up to 1/2 part additional sand may be added during application to assist with troweling and placement. Be sure to leave the lower half surface rough and sand covered to accept the next layer.
EXAMPLE
1 Qt side A,
1 Qt Side B,
4 Qts 10-20 silica sand,
Up to 1 quart additional sand as needed.
Once the first layer sets and turns grey, continue with an additional layer up to flush with the surface.
The mixed material should always be resin rich and the sand should be fully saturated when applying to the repair area.
For extra surface strength, 30 grit aluminum oxide may be broadcast and troweled in place on top as the materials start to gel in about 5 minutes after placement. Allow to fully cure and grind flush within 24 hours. OPTIONAL: Re-saw the contraction join
New Freezer Floor Coating Stops Concrete Dusting
A new freezer floor coating developed by Roadware, Inc. can stop concrete dusting and restore freezer warehouse floors. Concrete dusting in your warehouse floor is a difficult challenge. Dusting is when the concrete surface deteriorates to powder due to heavy traffic, improper placement of the original concrete, mix design failure or a number of other reasons. Surface dusting can lead to hazardous conditions for personnel, unsanitary conditions and product contamination. If the concrete is solid beneath the surface, these slabs can be made serviceable with specialized coatings. Coating slabs like this is even more challenging in a working freezer where temperatures are typically -20 degrees F (-29C).
Concrete dusting can lead to the complete breakdown of the concrete wearing surface. Pallet jacks and forklifts can grind down the concrete allowing silica dust to become airborne and causing a health hazard.
Disbonded topping slabs and epoxy coatings can also create a hazardous dusting situation.
Here concrete polishing equipment with metal grinding pads are used to remove the dusting surface of the concrete back to a solid surface.
Hand grinders can also be used to remove the dusting surface. Dust collection systems are used to collect hazardous silica dust.
Roadware Freezer Floor Coating is mixed at a ratio of 1:1:1:
One quart A
One quart B
One quart 4030 grit silica or manufactured quartz sand.
Combined on a pail and mix with a paint stick or 10 seconds. Apply immediately.
Coverage rate shown here is approximately 2.5 Meters Sq per mixed liter.
Keep materials at outside the freezer at about 60-70 degrees before mixing. Floor and air temperatures in the freezer for this project were -4 degrees F (-20C).
A single trowel down application is all it takes to provide a new surface to the concrete and good working floor. Product is applied at freezer operating temperatures. Product cures in several hours depending on the temperature and odor is very slight. Stand-up trowels may be used as well.
Full warehouse traffic can resume in 10 hours after application.
Floors treated with Roadweare Freezer Floor Coating are resilient and serviceable once again.
Product: Roadware Freezer Floor Coating
Features:
- Low Viscosity
- Easy Mixing
- Fast Curing in sub zero applications
- Very low odor
- Very low VOC’s that polymerize into the material.
Benefits:
- Freezer floors can be repaired or coated while operating.
- Can be applied in odor sensitive areas.
- Easy trowel down application.
- Warehouse traffic can resume in 12-24 hours depending on temperature.
Uses:
- Coating freezer floors to reduce dusting and improve riding surface.
- Repairing cracks, joints, and spalls in freezers.
Limitations:
- Products cures a translucent natural amber. Dry colored pigments may be added to the final mixing process if needed.
- Surface must be, clean, dry and free of frost.
- Frost and moisture must be removed with a propane torch or electric heated air just before application.
- Excess moisture can cause the product to whiten in high moisture areas and will cause an inconsistent look.
Roadware Freezer Floor Coating is available on a special order basis at this time. Call 800-52-7623 for more information.
Roadware to Present at the ICRI 2020 Virtual Fall Convention
Join me, Kelton at Roadware at @ICRIorg’s Virtual Fall Convention #ICRIFall20. I’ve been selected to present in a product demonstration, Less Invasive Crack Repair for Concrete Floors and Structures on October 13, 2020. 2:40 – 3:10PM CST. See a preview of the presentation on YouTube. Learn more about the virtual convention here.
The Concrete Mender One Page Pitch
Here is the Roadware Concrete Mender One Page Pitch. Things you need to know when considering, recommending, specifying, and using Roadware 10 Minute Concrete Mender™
Download the PDF here:
Amazon Warehouse – Full depth crack repair without sawing.
Full depth crack repair in warehouse floors usually involves cutting open the cracks with dry diamond saws. This is a slow process and creates a lot of hazardous silica dust that needs to be mitigated. Repair contractors at an Amazon Warehouse project are using an innovative way to repair cracks in the floor without the traditional cut and fill methods.
The problem:
Some people question why these types of cracks should be repaired. Cracked floors in industrial and commercial settings are a liability. The cracks will continue to get larger as wheeled traffic starts to crush the sidewalls. (More) Cracks will also fill with dirt and debris creating a hard to clean surface. Roadware 10 Minute Concrete Mender™ is a structural polyurethane that will restore load transfer and can bring a floor back to original serviceability.
This three level Amazon Warehouse developed thousands of linear feet of shrinkage cracks prior to being places into service. Roadware 10 Minute Concrete Mender will be used to repair them.
The Plan:
Use sacrificial vinyl weatherstrip to make a dam parallel to the cracks that will hold Roadware 10 Minute Concrete Mender™ in place while it soaks down into the cracks. Concrete Mender™ is nearly water thin when mixed and will flow easily deep into open cracks. Since Concrete Mender™ will start to gel up in 5-7 minutes, it will naturally self-seal the bottom of the crack as it cures. It sometimes takes three of four light pours of material, but it will fill the crack completely and start the structural Microdoweling™ process. Microdoweling™ is how Concrete Mender™ uses low surface tension and molecular attraction to penetrate concrete surfaces and locking into the aggregate and rock matrix.
Application:
With Concrete Mender™, expensive pumps and equipment is not needed. Once cracks are vacuumed and the surface is cleaned. The weatherstrip dam can be applied. Roadware 10 Minute Concrete Mender™ can be mixed on one gallon batches by hand in a bucket and poured directly into the cracks. Additional manufactured sand can be added for larger cracks, but it is not recommended for this type of repair. See more here: Concrete Mender Bulk Application Instructions
When the Concrete Mender™ cures in about 10 Minutes at 72 degrees F (21C) , the weather stripping and excess material can be shaved clear or ground smooth with standard equipment.
After buffing and clearing excess material, floors can be returned to service immediately.
Finished concrete crack repair blend in nicely at an Amazon warehouse using full depth Roadware 10 Minute Concrete Mender™.
Additional buffing and service traffic will blend the repairs even more into the surrounding concrete.
Roadware 10 Minute Concrete Mender Technical Data Sheet
Download PDF:
Concrete Mender™ TDSProduct used in the project:
COVID19 Operations
Roadware stands ready to supply immediate concrete repair needs for warehouses, cold chain logistics, manufacturing, and supply. Repairs can be made with almost no downtime and under operational conditions. Please call 1-800-522-7623 or 1-651-457-6122 to be connected with our worldwide network of distributors waiting to assist. Or, send email to sales@concretemender.com
We ask that visitors to Roadware Headquarters in South St Paul, MN, or any of our Roadware Distributors, call the location ahead to verify operating hours and local conditions.
Local distributor information can be found here:
Thank you and be safe,
Roadware, Inc.
Smart floor repairs for AGV’s and warehouse robots.
AGV’s or Automated Guided Vehicles are the reliable workhorses of the modern warehouse. They are designed to run smoothly and predictably all day and everyday. AGV’s are great at repetitive tasks moving freight as needed day in and day out. These repeated trips over the same path can be very punishing to concrete floors. The small hard wheels of an AVG can crush control joint sidewalls and grind the concrete surface to dust. This leads to rough, uneven floors that can cause premature breakdowns of AGV drive systems, wheels, and even damaged freight.
“If your AVG could talk, it would ask for Concrete Mender. ” Richard King, Roadware, Inc.
Roadware 10 Minute Concrete Mender with Microdoweling™ penetrates into concrete surfaces repairs concrete cracks, joints and spalls where others fail. Over the years we have noticed some conditions needed for successful repairs in the path of AVG’s.
- Repairs need to be as tough as the concrete itself. But not too tough. Let’s say your concrete is a typical 4000 psi in compressive strength. The AGV wheels are grinding away the surface of the concrete and spalling the control joints. You repair the “bad” sections of the path with fairly brittle 10,000 psi epoxy. Now you have sections of the original concrete and sections of much harder epoxy. As the original concrete continues to grind away, the hard epoxy remains and you just created more speed bumps for the AVGs. Concrete Mender will wear with the concrete and deflect with the concrete under load. Your AVG’s favorite path will be smoother longer.
- Stop your repairs from popping out. Did you ever notice common warehouse floor repairs popping out in chunks? This can happen when you put a super hard epoxy patch in a not as hard concrete floor. The epoxy is so brittle that it fractures the bond-line when a load is applied. Epoxy repair products have a modulus of elasticity that is so high, it will fracture the concrete before deflecting under load. Concrete Mender has a modulus of elasticity that is slightly less than concrete so it will deflect with concrete concrete under load and gently transfer load from the repair to the surrounding concrete.
- Time is money! Closing down aisles or sections of a warehouse is a disruption for everyone including AVG’s. With minimal prep requirements and less invasive techniques including Roadware Easy Injection, 10 Minute Concrete Mender can have your AVG pathways back in service in minutes, not hours or days. You can even make repairs in operational freezers down to -30F.
Products used in this application: