Category Archives: Concrete Repair

concrete mender, Concrete Repair, Concrete Repair

How Amazon Warehouse Achieves No-Cut, Full-Depth Crack Repair

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Repairing full‑depth cracks in warehouse floors has traditionally required opening the cracks with dry diamond saws. While common, this method is slow, expensive, and produces hazardous silica dust that must be carefully controlled. On a recent Amazon Warehouse project, contractors adopted a faster, cleaner, and more durable solution: no‑cut crack repair using Roadware 10 Minute Concrete Mender.

This innovative approach eliminates saw‑cutting entirely while restoring structural performance across thousands of linear feet of shrinkage cracks.

Thre level Amazon Warehouse with cracks in the floor.

Why Repairing Warehouse Floor Cracks Matters

In industrial and commercial facilities, cracked concrete floors create serious long‑term problems:

  • Progressive deterioration as forklifts and wheeled traffic widen the cracks
  • Loss of load transfer, reducing slab performance
  • Safety and liability risks for employees and equipment
  • Dirt accumulation, making floors harder to clean
  • Premature slab failure, leading to costly downtime

Roadware 10 Minute Concrete Mender is a structural polyurethane engineered to penetrate deep into concrete and restore aggregate interlock. Its ultra‑low viscosity allows it to reach the bottom of full‑depth cracks without cutting.

Crack in warehouse floor.
This floor presented thousands of feet of shrinkage and stress cracking. The cracks were all fairly clean without excessive foreign debris or dirt at time of repair. 

Project Overview: Three‑Level Amazon Warehouse

This three‑story Amazon facility developed thousands of linear feet of shrinkage and stress cracks before going into service. Fortunately, the cracks were clean and free of embedded debris—ideal conditions for a no‑cut, full‑depth repair.

The No‑Cut Repair Plan

Instead of opening the cracks with saws, contractors used sacrificial vinyl weatherstrip to create a temporary dam along each crack. This peel‑and‑stick barrier holds Concrete Mender™ in place while it flows downward.

Why This Works

When mixed, Concrete Mender™ has a water‑thin viscosity, allowing it to:

  • Wick deep into cracks
  • Penetrate micro‑fractures
  • Bond directly to aggregate
  • Begin gelling within 5–7 minutes

This process initiates Roadware’s signature Microdoweling action—molecular bonding that locks the repair into the concrete matrix.

Most cracks require three to four light flood applications to achieve full‑depth penetration and complete structural restoration.

Step‑by‑Step Application Process

One of the advantages of Concrete Mender™ is that it requires no pumps, ports, or heavy equipment.

1. Surface Preparation

  • Vacuum the cracks
  • Clean the surrounding concrete

2. Install Weatherstrip Dam

Apply peel‑and‑stick vinyl weatherstrip along the crack to form a temporary containment well.

3. Mix Concrete Mender™

  • Combine equal parts A and B
  • Mix for 15 seconds

4. Flood the Crack

Pour Concrete Mender™ directly into the crack. Allow it to soak in and repeat until the crack is filled to refusal.

5. Cure and Finish

Concrete Mender™ cures in about 10 minutes at 72°F (21°C). Once cured:

  • Remove the weatherstrip
  • Shave or grind excess material flush with the floor
  • Return the area to service immediately

For this repair type, do not add manufactured sand. For larger spalls or wide cracks, see the Concrete Mender Bulk Application Instructions.

No cut full depth crack repair with Roadware 10 Minute Concrete Mender™.
No-cut crack repair with Roadware 10 Minute Concrete Mender™ uses removable peel-and -stick weatherstrip to form a temporary well that holds the Concrete Mender in place while it soaks down into the crack.
Amazon Warehouse full depth crack repair without cutting.
Weatherstripping is used to hold Roadware 10 Minute Concrete Mender in place while it soaks deep into cracks.

Results: Clean, Fast, and Structurally Sound Repairs

The finished repairs blend smoothly into the surrounding concrete. As forklifts and foot traffic continue across the slab, the repairs become even less noticeable.

Amazon Warehouse full depth crack repair without cutting.
Roadware 10 Minute Concrete Mender injected deep into cracks using the Roadware Easy Injection System.
Roadware 10 Minute Concrete Mender injected deep into cracks using the Roadware Easy Injection System.
Amazon Warehouse full depth crack repair without cutting.
Crack repairs are filled with Roadware 10 Minute Concrete Mender to refusal and the excess is removed.
Amazon Warehouse full depth crack repair without cutting.
Roadware 10 Minute Concrete Mender fills hairline cracks completely using the dam and flood method. No cutting is needed.

Roadware 10 Minute Concrete Mender Technical Data Sheet

Download PDF:  

Concrete Mender™ TDS

Product used in the project:

80020 Roadware 10 Minute Concrete Mender Two-Gallon Kit
80020 Roadware 10 Minute Concrete Mender Two-Gallon Kit

80020 Roadware 10 Minute Concrete Mender Two-Gallon Kit

80050 Roadware 10 Minute Concrete Mender Ten-Gallon Kit
80050 Roadware 10 Minute Concrete Mender Ten-Gallon Kit

80050 Roadware 10 Minute Concrete Mender Ten-Gallon Kit

 

concrete mender, Concrete Repair, Concrete Repair

Ultimate Guide to Fast-Curing Concrete Repairs for Warehouses

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Why Fast-Curing Repairs Matter in Modern Warehouses

Warehouse operations are faster, heavier, and more continuous than ever. A single cracked slab or spalled joint can disrupt workflow, damage equipment, and create safety hazards. Traditional concrete repair products often fall short because they cure slowly or fail under dynamic loads.

Key challenges facility managers face:

  • Heavy forklift and truck traffic
  • Tight logistics schedules
  • Rising maintenance costs
  • Pressure to reduce downtime
  • Need for long-term structural durability

This is why fast-curing, structural-grade materials are now essential—not optional.

Roadware 10 Minute Concrete Mender is widely recognized as one of the most reliable heavy-duty floor repair systems for industrial environments. Its unique Microdoweling™ action allows the material to penetrate deep into the concrete matrix, creating a permanent structural bond.

What Makes Concrete Mender Different?

  • Ultra-low viscosity (8 cps) for deep penetration
  • Structural bonding that restores aggregate interlock
  • Fast cure times—traffic-ready in 10–15 minutes
  • High durability under forklift and truck traffic
  • Works in extreme temperatures (down to –20°F)
  • Minimal surface prep reduces labor and downtime

This is true structural concrete repair designed for demanding industrial environments.

Concrete Mender crack injection into 24 inches of concrete.
Concrete Mender crack injection into 24 inches of concrete. Notice the material penetrating full depth.

Performance Benefits for Facility Managers

1. Rapid Cure for Minimal Downtime

Roadware’s fast-curing formula enables warehouse downtime reduction by allowing traffic lanes to reopen quickly—often within minutes.

2. Long-Term Durability Under Heavy Loads

Unlike brittle epoxies, Concrete Mender deforms with dynamic loads, preventing future cracking and eliminating weak patch lines.

Diagram of a spalled contraction joint repair using 10 Minute Concrete Mender headers.

3. Versatile Applications

  • Crack repair
  • Spall repair
  • Joint stabilization
  • Delamination injection
  • Polished concrete prep
  • Anchor and bolt repair

4. Works in Any Temperature

Perfect for cold storage, freezer slabs, exterior docks, and hot manufacturing environments, suitable for concrete repair.

Comparing Fast-Curing Industrial Concrete Repair Systems

To evaluate fast-curing concrete materials, facility managers should consider:

  • Cure speed (minutes vs. hours)
  • Bond strength (surface patch vs. structural penetration)
  • Flexibility vs. brittleness under dynamic loads
  • Temperature performance
  • Dust and prep requirements
  • Long-term durability

Roadware 10 Minute Concrete Mender consistently ranks at the top across all categories

Chart showing cure time vs temperature for Roadware 10 Minute Concrete Mender.
Chart showing cure time vs temperature for Roadware 10 Minute Concrete Mender.

Conclusion

In 2026, facility managers need concrete repair systems that deliver structural performance, fast cure times, and minimal disruption.

Additionally, Roadware 10 Minute Concrete Mender remains a trusted solution for industrial environments where up-time is critical.

Repairs must last.

concrete mender, Concrete Repair, Concrete Repair

Essential floor repairs for AGVs and warehouse robots

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“If your AGV’s, robots, warehouse, floor repair could talk, they would ask for Concrete Mender,” said Richard King, Roadware, Inc.

Keep your robots moving. Keep your floors performing.

AGV carrying beer on a preset path in a warehouse.
AGV’s move thousands of pounds in a single trip over the exact same path hundreds of times per day.

Automated Guided Vehicles (AGVs) and warehouse robots are the backbone of modern distribution centers, AGV’s, robots, warehouse, floor repair considerations. They run the same routes thousands of times per day—quietly, efficiently, and relentlessly. But their small, hard wheels can be brutal on concrete floors.

Over time, those repeated passes crush joint edges, wear down surface paste, and create ruts, spalls, and dusting that slow down operations and damage equipment.

Roadware 10 Minute Concrete Mender with Microdoweling™ delivers the only repair solution engineered to move with the concrete, bond deep into micro‑fractures, and stand up to the punishing traffic patterns of AGVs.

Why AGV Floors Fail — and Why Traditional Epoxies Make It Worse

AGVs concentrate thousands of pounds of load onto narrow wheel paths. When they repeatedly cross control joints and worn concrete, the damage compounds:

  • Joint shoulders crumble
  • Surface paste turns to dust
  • Ruts form in high‑traffic lanes
  • AGV drive systems and wheels wear prematurely

Many facilities try to fix this with brittle, high‑PSI epoxies. But that creates a new problem:

Hard epoxy + softer concrete = speed bumps and pop‑outs.

If your concrete is ~4000 psi and you patch it with a 10,000+ psi epoxy, the epoxy won’t flex. The surrounding concrete continues to wear, leaving raised, rigid epoxy “islands” that fracture at the bond line.

The Concrete Mender™ Advantage: Tough, Flexible, and AGV‑Ready

Roadware 10 Minute Concrete Mender® is engineered differently:

  • Microdoweling™ penetration bonds deep into the concrete matrix
  • Modulus of elasticity slightly below concrete allows repairs to flex under load
  • Repairs wear with the concrete, not against it
  • No brittle failures, no speed bumps, no pop‑outs
  • Traffic-ready in about 10 minutes — even under heavy AGV loads
  • Works in freezers down to –30°F

AGV’s, robots, warehouse, floor repair initiatives help give your operations a smoother path. Floors last longer. Your maintenance team stops chasing recurring failures.

Fast Repairs. Minimal Downtime. Maximum Uptime.

Closing aisles for hours or days is expensive. With Concrete Mender®:

  • Minimal prep
  • Fast cartridge or Easy Injection application
  • Return to service in minutes
  • Ideal for 24/7 operations, cold storage, and high-throughput facilities

AGVs can stay productive — and so can your team.

Where Concrete Mender Excels

  • Control joint rebuilding
  • Spall and pothole repair
  • Wheel-path ruts
  • Cracked or delaminated concrete
  • Freezer and cold‑storage floors
  • High‑traffic robotic lanes

If your AGVs follow the same path every time, Concrete Mender® keeps that path smooth, durable, and reliable.

Recommended Products for AGV Floor Repairs

Your AGVs Will Thank You

As Roadware’s Richard King says:

“If your AGV could talk, it would ask for Concrete Mender.”

Because smoother floors mean fewer breakdowns, less wheel wear, and more uptime.

Click here to get started with concrete mender
Concrete repairs for AGV’s need to bond under heavy traffic as well as deflect with the concrete and transfer loads to the surrounding concrete without fracturing.

AVG’s like to take the same path every time. This can prematurely wear out concrete floors.
AGV drive system in an Automated Guided Vehicle.
The drive system in a typical AGV can haul a lot of weight, but the floor needs to be smooth.
Warehouse and AGV floors can be repaired and open for traffic in about 10 minutes after application with Roadware 10 Minute Concrete Mender.

Products used in this application:

80300 Roadware 10 Minute Concrete Mender 600ml Cartridge
80300 Roadware 10 Minute Concrete Mender 600ml Cartridge
80020 Roadware 10 Minute Concrete Mender Two-Gallon Kit
80020 Roadware 10 Minute Concrete Mender Two-Gallon Kit

80020 Roadware 10 Minute Concrete Mender Two-Gallon Kit

 

Concrete Repair, Concrete Repair

Roadware to Present at the ICRI 2020 Virtual Fall Convention

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Kelton Glewwe is Vice-President of Marketing for Roadware Incorporated and an original founding partner of the company. Kelton has set up sales and distribution networks for Roadware construction products in over twenty countries around the world. He has worked on projects ranging from automated freezer warehouses in Washington to 100 year old railroad piers in New York and Airport Runways in Hong Kong. Kelton is a graduate of the University of Saint Thomas and lives in Inver Grove Heights, Minnesota.

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.

Roadware is a proud member of the International Concrete Repair Institute.

concrete mender, Concrete Repair, Concrete Repair

The Concrete Mender One Page Pitch

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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:

Roadware 10 Minute Concrete Mender One Page Pitch.

concrete mender, Concrete Repair, Concrete Repair

COVID19 Operations

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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:

Find your Distributor

Thank you and be safe,

Roadware, Inc.

Concrete Repair, Concrete Repair

Automotive Lift Anchoring Floor Repair

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Two post automotive hoists and lifts are generally bolted to the floor using compression anchors. When the lift needs to be replaced, the new anchors can not interfere with the old anchor points. If the old anchor points are too close to the new anchor points, the concrete needs to be replaced before the new lift can be installed. This can close a service bay for a month or more. 

With Roadware 10 Minute Concrete Mender, we can remove the old compression anchors, repair the concrete and install new compression anchors without having to replace the concrete. 

Automotive lift floor attachment patten over existing list installation.

After removing the old lift, the compression anchors need to be removed. If the original anchor hole was drilled full depth, they can be driven down beneath the floor with a hammer and a punch. If the anchor are not full depth, a core drill is used to remove the anchor.

Using a 2″ core drill to remove existing anchors.

After drilling, the holes are cleaned and reamed with a reaming bit to roughen up the sidewalls. A shop-vacuum is used to remove all dust and debris. The concrete is than cleaned with alcohol or a similar evaporating cleaner.  The holes have to be clean and completely dry before proceeding.

Core drilled anchor holes are cleaned and roughened with a hole reamer.

Use duct tape to mask off the holes to be filled with Roadware 10 Minute Concrete Mender™

Masking off the old anchor holes in preparation for repairing with Roadware 10 Minute Concrete Mender.

Gather the materials needed to repair the holes. Roadware 10 Minute Concrete Mender is designed to repair cracks, spalls and holes in concrete. Not just simply fill them. The Microdoweling™ penetration of Concrete Mender into the concrete is a structural repair and can bring the concrete back to original design parameters. 

Items needed:

  • 80020 Two-gallon kit of Roadware 10 Minute Concrete Mender.
  • 4030 grit or similar dry manufactured sand or quartz. Enough to fill the holes.
  • Mixing and measuring pails. One quart paint mixing pails work well.
  • Gloves, safety glasses and PPG as needed.
Roadware 10 Minute Concrete Mender, sand, mixing buckets, and mixing sticks.

We made a short video to demonstrate the basic technique of filling a core drilled hole in concrete. Concrete Mender doubles in volume when adding sand. All we need to do is fill the hole halfway with Concrete Mender and then add sand to bring it up to the top. Note: In the field it may be impractical to get the bottom of the hole completely dry or clean especially if the hole is full depth into the base material. Simply repair the bottom 1/4 of the hole with Concrete Mender and sand first and allow it to cure before repairing the rest of the hole up to the top.  

Measure out equal parts of Side A and Side B Concrete Mender and combine them into your mixing bucket. Mix with a stick by hand for about 15 seconds. 

Pour equal parts A and b into a mixing container and mix for about 15 seconds with a mixing stick.

Mix equal parts Side A and Side B by hand in a mixing pail for 15 seconds.

Fill the holes half-way with mixed Roadware 10 Minute Concrete Mender.

Fill the hole halfway with mixed Concrete Mender. Use a marked stick to gage the halfway mark.

Add sand into the hole bringing the Concrete Mender level up to the surface. Make sure all the sand is completely saturated. 

Pour sand into the hole bringing the Concrete Mender up to the surface.

Level the surface with a trowel or stick and allow to cure for about 10 minutes at 70 degrees F (21C). 

Smooth the top of the repairs with a trowel or mixing stick.

Remove the tape after the Concrete Mender cures and turns grey in about 10-15 minutes.

Concrete Mender turns grey when it cures. Pull the tape.

A finishing rubbing brick is used to quickly bring the repairs flush with the floor.

Concrete Mender repairs are made flush with a rubbing brick.

Holes to anchor the new lift are marked and drilled into the concrete. Time to test the repairs and make sure the repairs will hold the anchors for the new lift.

New anchor holes are drilled for the new lift next to the repaired holes from the old lift anchors.

New compression anchors are installed and torqued to the specified level.

New compression anchors and installed.

For the repair to be successful, the compression anchor must hold 3000 lbs or 1360 kg for 12 hours without cracking or splitting of the surrounding concrete.

An anchor testing device is used to pull 3000 lbs of force on the anchor for 12 hours.
Compression anchor testing device showing 3000 pounds of force.

Several anchor were tested. All passed and the lift was installed the next day and placed into service. Roadware 10 Minute Concrete Mender™ is designed to bring most concrete slabs back to original design strength. Repairing anchor holes prior to new automotive lift installation with Roadware 10 Minute Concrete Mender is now the specified choice for two of the largest auto service companies in the United States.

Roadware Products used in thie repair:

80020 Roadware 10 Minute Concrete Mender Two-Gallon Kit
80020 Roadware 10 Minute Concrete Mender Two-Gallon Kit

80020 Roadware 10 Minute Concrete Mender Two-Gallon Kit

Click here to find a Roadware Distributor near you.

Concrete Repair, Concrete Repair

Ultimate Full-Depth Hairline Crack Injection Breakthrough

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1006-STR Roadware Easy Injection static mixer for Roadware 10 Minute Concrete Mender 600ml Cartridge.

Roadware 10 Minute Concrete Mender™ and Easy-injection mixers make full-depth crack repairs in hairline cracks without cutting. This less evasive crack repair technique breaks the rules for concrete repair.

Broken Rule One

Hairline cracks are not worth the trouble fixing.

Broken Rule Two
 You have to cut open a hairline crack if you want to actually repair it.

Broken Rule Three
Crack injection requires pumps, ports, slow epoxy, and lots of time.

Let’s look at these “rules” one by one. 

Broken Rule One: Hairline cracks are often dismissed as not worth fixing. However, it’s important to note that almost every concrete crack starts as a hairline crack. Some of these cracks are so tiny that they are not visible to the naked eye.

Cracking is a natural occurrence in concrete slabs as they cure and shrink. To help manage this, we use saw-cut control joints to direct the cracking to specific areas. However, sometimes cracks appear in unexpected locations. We currently lack an efficient method for repairing hairline cracks, so we often overlook them, considering them a normal aspect of concrete. To reassure customers, we might say things like, “It will be fine; you still have aggregate interlock, and the crack is just on the surface,” or “All concrete cracks; it’s just part of the material’s nature.” Unfortunately, customers who have invested in a new concrete floor often find these explanations unsatisfactory.

The truth is, we would fix hairline cracks if there were a good and efficient way to do it.

Scoring a concrete crack with a diamond grinder.

Broken Rule Two: You have to cut open crack if you really want to repair it.  A repair material has to actually get into a crack so it will actually do some good. Anything short of that is no better than caulk. For the most part, this is true. We can’t repair what we can’t reach. Traditional cut and cover techniques us a diamond blade saw to open up a crack, forming a shallow well for Concrete Mender to accumulate and flow down into the crack. It works really well, and Roadware has been doing it for over twenty years.

What is needed is a way to actively push repair products into hairline cracks. Roadware 10 Minute Concrete Mender can do the job with simple techniques and Easy Injection Mixers. That brings us to:

Broken Rule Three: Crack injection requires pumps, ports, slow epoxy, and lots of time. 

For a successful crack injection repair you need to accomplish three things:

  • Delivery of materials to the repair area.
  • The repair material needs to set before if flows away from the repair area .
  • The repair has to be structurally effective.

The Roadware Easy Injection mixers make it easy to fill cracks as small as 20 mil (0.02 inches) with Concrete Mender. Simply drill a 3/8-inch hole into the crack and then push the almost-water-thin Concrete Mender into the cracks. You can see the Concrete Mender flow along the entire length of the hairline crack. You won’t need expensive injection pumps for this – just a cartridge of Concrete Mender and a manual application gun.

Roadware 10 Minute Concrete Mender starts to thicken and cure in about 5 minutes after application, so the material will stay where you put it. Traditional injection epoxies take hours to cure. In many cases,  at the end of the day, the epoxy all ends up under the slab and no longer in the crack.

Diagram showing Concrete Mender Soft-tip mixer injection into a concrete slab.

Roadware 10 Minute Concrete Mender™ with Microdoweling™ effectively repairs concrete by penetrating traditional bond lines and addressing issues from the inside out. This structural polyurethane is designed to remain flexible and will not become brittle over time. In contrast, epoxy injection resins harden and can become brittle, leading to deterioration as the concrete shifts under traffic. When exposed to heavy loads, brittle epoxy can grind away at the bond line, causing problems to reemerge.

Roadware 10 Minute Concrete Mender is specifically formulated to restore the interlock of concrete aggregates, allowing it to flex along with the concrete under stress. This means it can bring cracked concrete back to its original, pre-cracked condition without becoming brittle over time.

Roadware 10 Minute Concrete Mender with Easy-injection mixer repairing a hairline crack.
Concrete Mender crack injection into 24 inches of concrete.
Concrete Mender crack injection into 24 inches of concrete. Notice the material penetrating full depth.
Hairline cracks less than 20 mil across repaired using Roadware 10 Minute Concrete Mender and Easy Injection application. UV Forensic Photography. See More Here

Getting Started

80300 Roadware 10 Minute Concrete Mender 600ml Cartridge
80300 Roadware 10 Minute Concrete Mender 600ml Cartridge

1006-STR 24-element static mixer with Easy Injection Tip
1006-STR 24-element static mixer with Easy Injection Tip

1006-STR 24-element static mixer with Easy Injection Tip

5300C 600ml Dual Cartridge Application Tool
5300C 600ml Dual Cartridge Application Tool

600ML (300x300) dual cartridge application tool for all Roadware 600ML cartridges.

Concrete Repair, Concrete Repair

Emergency Repair at Service Station with Concrete Mender

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Bill Neal of Neals Design recently repaired spalled and cracked concrete on the fly at a service station in Washington.  A customer had broken an ankle stepping out of a truck into the badly spalled concrete. Bill was able to make the repair in minutes, eliminating the safety hazard without major disruption to the service station.

Roadware 10 Minute Concrete Mender is your go to product for making long-lasting repairs with minimal downtime.  At 70 degrees F  or 21C, A Concrete Mender repair can be ready for heavy truck traffic in about 10 minutes.

Finished Concrete Mender repairs at a truck fuel station.
Finished Concrete Mender repairs ready for traffic.

The ultra low viscosity Concrete Mender mixes very easily with manufactured sand or quartz.  A tough and durable polymer concrete mortar can be mixed in a bucket by hand with simple tools. No expensive pumps or power mixers needed. See how it is done here. Concrete Mender™ Bulk Application Instructions

Product used:

Roadware 10 Minute Concrete Mender™ Two-gallon Kit #80020

Roadware 10 Minute Concrete Mender™ two gallon kit. Item #80020
Roadware 10 Minute Concrete Mender™ two gallon kit. Item #80020

How to buy.

Find out more.