Tag Archives: concrete repair

Concrete Repair, Concrete Repair, Roadware Incorporated

Automotive Lift Anchoring Floor Repair

Image May 6, 2019 Kelton Glewwe Leave a comment

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.

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

Click here to find a Roadware Distributor near you.

bulk, CM, Concrete Repair, Concrete Repair

Emergency Repair at Service Station with Concrete Mender

Video August 10, 2017 Kelton Glewwe Leave a comment

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

How to buy.

Find out more.

concrete mender, Concrete Repair, crack repair, pool deck, spalls

Swimming Pool Repair with Concrete Mender

Image August 8, 2017 Kelton Glewwe 9 Comments

Pool spalls are cleaned and prepared for repair with Roadware 10 Minute Concrete Mender.

What do you do when your pool has cracks and spalls and it has to be open is three days? Back in 2001, the City of South Saint Paul, Minnesota had a problem with their new splash pool. Just before opening the pool for its second season, cracks and spalls were discovered in the concrete pool bottom and along corner where the floor meets the wall. The damaged was probably caused by the first Minnesota winter for this neighborhood splash pool facility. The repairs needed to be done fast. The pool was scheduled to be open in just three days. Any delay would be a disappointment for local families and political problem for the City who spent a lot of money to build this water recreation facility.

The call went out to see if anyone could come up with a solution. Roadware Incorporated, also located in the City of South Saint Paul, received a call from the Parks and Recreation Maintenance Department to see if we had any ideas. It turns out, Roadware 10 Minute Concrete Mender™ is a great product for repairing concrete pools. The cross-linked polyurethanes in Concrete Mender and very resistant to water, chlorine and other pool chemicals.

Roadware personnel were at the pool within a few hours and repairs were made using a mixture of Roadware 10 Minute Concrete Mender and manufactured sand.

Mixing 10 Minute Concrete Mender with sand in a bucket prior to repairing a spall in the concrete pool floor.

Roadware 10 Minute Concrete Mender is flooded into the spalled ares and seeded with manufactured sand.

Roadware 10 Minute Concrete Mender and sand are applied to spalls in the pool floor.

The Concrete Mender and sand bland can be troweled in place and will cure in about 10 minutes.

Roadware 10 Minute Concrete Mender mixed with sand is troweled into place.

Vertical surfaces can be repaired by mixing Concrete Mender with fine manufactured sand and troweled in place.

Pool repairs at the pool edge are made with Concrete Mender mixed with sand and troweled in place.

Repairs can be painted using standard methods in 10 minutes after application at 70 degrees F (23C).

Finished Concrete Mender spall repairs in pool were ready for paint in minutes. — Finished repairs were ready for paint in minutes.

All the repairs took just a few hours to complete and the pool was ready for a fresh coat of paint in minutes. The pool was painted and filled with water the next day. The Concrete Mender repairs have largely been forgotten, but continue to perform to this day.

The South Saint Paul Splash Pool in 2017. Concrete Mender repairs in the pool still look good 16 years later.

Products:

Roadware 10 Minute Concrete Mender™

concrete mender, Concrete Repair

Floor repair stands up to forklift damage.

December 27, 2016 Kelton Glewwe Leave a comment

The Microdoweling™ action of Roadware 10 Minute Concrete Mender™ can structurally, “glue” concrete back together. Pictured here is a concrete break-out caused by a forklift hitting an anchored steel bollard.

Anchored post hit with forklift causing damage to floor.

Concrete Mender™ was used to re-attach the broken concrete piece and repair the crack.

Damaged floor anchoring steel post is repaired and loose concrete piece re-attached with Concrete Mender™.

After about 10 minutes, the repair was buffed smooth and open for traffic.

Concrete Mender™ repair is buffed smooth and ready for service.

About a week later, the bollard was again hit with a forklift and at the same angle. The repaired concrete held in place. The concrete broke on the other side of the bollard this time. Concrete Mender can’t stop forklifts from hitting bollards. It can help minimize the damage and make lasting repairs.

Concrete Mender floor repair one week after installation. The steel post was hit again with a forklift and is still holding in place.

concrete grinding, Concrete Repair, contraction joints, control joints

Less Evasive Concrete Repair | Reducing Silica Dust

May 12, 2016 Kelton Glewwe 7 Comments

Less Evasive Concrete Repair

Reducing worker exposure to silica dust is an OSHA and job site priority.

“Workers may be exposed to dangerous levels of silica dust when cutting, drilling, grinding, or otherwise disturbing materials that contain silica. These materials and tasks are common on construction jobs. Breathing that dust can lead to serious, often fatal illnesses.” The Center for Construction Research and Training. Click here to learn how to work safely with silica.

Core sample of Roadware 10 Minute Concrete Mender™ repair shown under UV light.

With Roadware 10 Minute Concrete Mender™, you can make excellent crack and spall repairs with much less cutting and grinding. Standard preparation for most concrete repair products calls for invasive actions from square cutting and removal to deep cutting, grinding and sandblasting. Aggressive preparation is necessary for standard repair material like epoxy and polyureas. They are too thick to penetrate and bond to compromised concrete surfaces. Roadware 10 Minute Concrete Mender™ has an extremely low viscosity of less than 8cps when applied with a surface tension one third of water. Concrete Mender™ can penetrate and bond concrete surfaces where other materials will fail.

Less grinding and cutting means less dust to mitigate.

Many concrete crack repairs can be made with Concrete Mender™ with just a light scoring with variable speed diamond grinder. This reduces dust production by nearly 70% over conventional methods.

In some situations, cracks can be repaired directly with only a shop vacuum used to remove dirt and dust. Roadware’s needle tip application mixers are great for getting Concrete Mender™ into small cracks in fissures.

Roadware 10 Minute Concrete Mender™ needle tip application.

A wire wheel can be used for preparing cracks and spalls. We recommend using a variable speed grinder with a twisted wire wheel. This generates less dust than diamond blades and still does a good job preparing the crack for a Concrete Mender repair.

A wire wheel in a variable speed grinder generates less dust than a diamond cutting blade.

After the crack or spall is repaired, grinding and buffing to make the repair flush can be made using wet methods in just 10 minutes after application when using Concrete Mender™. Other low dust methods include razor scrapping and dustless grinding equipment.

Wet and damp grinding and polishing reduces dust generation.

concrete-mender-scrape-razor-feature — Razor scrapping is a low-dust method of finishing Concrete Mender™ repairs.

Whenever cutting or grinding concrete, have a plan to keep harmful dust away from workers and bystanders. Using Roadware 10 Minute Concrete Mender™ with these minimal evasive techniques can help keep dust exposure to a minimum.

cold storage warehouse, concrete mender, Concrete Repair, contraction joints, epoxy

Warehouse Floor Repairs in the Dominican Republic.

November 3, 2014 Kelton Glewwe

Franklin Gutierrez in the Dominican Republic is using Roadware 10 Minute Concrete Mender™ to repair multiple spalls in a warehouse floor that were causing damaged forklifts and damaged backs.

“We did 87 repairs for this client, it is a tin can production plant, they work 24/7 so there was no time to close areas for repairs , also lots of equipment very sensible to dust in the air. The major problem was that those small holes were damaging the wheels of the forklifts, damaging the back of the operators and creating possible dangerous situations for the forklift operators, because they manage very heavy loads and even a small hole could make it unstable.

We did all in two days and the client is very very happy, the problems were solved and there was no interruption for them.

This is a big plant that produces for the local market and export, its called Troquedom.”

Loose materials are removed from the spall.

Bulk Roadware 10 Minute Concrete Mender™ mixed with sand is troweled into the spall. See instructions here.

Heavy forklift traffic can be restored in about 10 – 20 minutes depending on the temperature.

Roadware 10 Minute Concrete Mender™ with Microdoweling™ performance creates structural concrete repairs that will hold up under the toughest warehouse floor applications. Even if the warehouse is for frozen food and -20F or colder.

colored concrete, Concrete Repair, crack repair, decorative concrete, decorative concrete repair, intregal color, MatchCrete, stamped concrete

Stamped Concrete Crack Repair with MatchCrete™ Clear.

June 11, 2014 Kelton Glewwe

Repair Cracks and Spalls in stamped concrete with MatchCrete™ Clear.

You can use MatchCrete™ Clear Concrete Repair Polyurethane to repair intregal color or stamped concrete.

MatchCrete Clear stamped concrete crack repair.

Remove dirt, loose concrete, repair materials or failed caulk.

Prepare crack for MatchCrete Clear application

Use a diamond blade to slightly cut open the crack and clean out loose concrete and debris.

Stamped concrete repair with Roadware MatchCrete Clear.

Use tape to mask off the crack.

Materials need to repair stamped concrete with MatchCrete Clear.

Gather materials needed to make the repair. From left to right we have some brown concrete pigment, silica sand (43-30 grit), black unsanded tile grout for color, and a mixing cup.

Materials need to repair a crack in stamped concrete with MatchCrete Clear.

Dispence the MatchCrete™ Clear into a cup.

Adding silica sand to Roadware MatchCrete Clear for repairing stamped concrete.

Add a littlt silica sand to give the MatchCrete™ Clear some base color.

To create your color, add a small amount of powdered concrete pigment and blend with a mixing stick.

Concrete pigments are strong. It just takes a small amount to color the product.

Here we are adding some black un-sanded tile grout to the mix to make a closely matching color to the stamped concrete. You can use many types of sand and dry pigments to create the desired color and texture.

Blend well by hand for about 30 seconds. You will have about 10 – 15 minutes of working time before the product starts to gel. Work in small batches.

Pour the blended MatchCrete™ Clear into the crack. The material will start to gel and can be troweled into place before setting.

Reapiring Stamped concrete with MatchCrete Clear.

Allow to set for about 30 minutes and pull the tape.

The repair can will be ready for traffic in about an hour. Roadware MtchCrete™ Clear repairs are tough and will not crack apart like cement based materials. The repair is UV color stable and will not become brittle like epoxy. Please click here for a MatchCrete™ Clear data sheet.

Concrete Repair

Cracked floor in data center repaired with Roadware 10 Minute Concrete Mender™.

March 31, 2014 Kelton Glewwe

When permanent repairs are needed for a data center that will operate 24/7/365, the contractor turns to Roadware 10 Minute Concrete Mender™. Concrete Mender’s Microdowling™ action penetrates deep into concrete cracks and can re-bond slabs back together to form a structural repair. The repairs can be polished flush in about 15 minutes leaving a smooth high performing surface.

Cracked concrete in a space to be converted to a data center in Omaha, Nebraska.

The cracked topping span at this data center needs to be repaired so a dust free environment can be maintained.

Roadware 10 Minute Concrete Mender™ is used to repair the cracks and spalls prior to concrete polishing.

Roadware 10 Minute Concrete Mender™is mixed with sand and applied with a margin trowel. Unlike polyureas, Concrete Mender™ will not gum-up and will remain trowel-able for several minutes before setting.

Concrete crack repairs with Roadware 10 Minute Concrete Mender™ can be most any length, width or depth.

After about 10 minutes, repairs can be polished smooth using standard concrete polishing equipment. Concrete Mender™ will not smear into the surrounding surface under the heat if the diamond polishing.