There is a big problem with control joints or contraction joints. They are the saw cut joints we cut into concrete slabs to control cracking as the concrete cures. The problem is the floor owner typically wants the floor poured, joints cut, joints filled, and building occupied in 60 days or less. Concrete cures hard in typically 28 days, but it continues to shrink and crack for a about a year. The contraction joint that was 1/4″ when it was cut, can almost double in width in that first year leaving the 1/4″ of joint filler a bit short, cracked and generally a mess. The sidewalls of the joint are left unprotected and the joint spalling begins. You can replace all that gummy polyurea or brittle epoxy with Roadware 10 Minute Concrete Mender™ and leave your control joint problem behind.
Category Archives: Concrete Repair
Concrete Polishing and Staining Conference Free Registration
Roadware is exhibiting at the CP&S show in Milwaukee on October 20-22, 2016 in booth #119. NOW #219
The International Concrete Polishing & Staining Conference and Expo is the only event of its kind specifically designed for concrete polishing professionals. This show offers 20+ conference sessions, an Exhibit Hall featuring polishing equipment and products, slab demonstrations and more.
To take advantage of our exclusive VIP offer for free access to the CP&S Exhibit Hall, simply enter promo code RINC when registering online. We look forward to seeing you at the show! P.S. Be sure to check out the CP&S Conference, offering more than 20 technical and business management sessions geared specifically for concrete polishing professionals!
On Wednesday, October 19 … CP&S is offering Brad Humphrey’s All-Day Leadership Boot Camp for contractor owners and employee leaders in ANY construction business. With more than 35 years in the industry, Brad is a veteran construction contractor and coach who is in high demand throughout the industry. Don’t miss this intensive, all-day coaching session to help you take your company to the next level!
MatchCrete Clear™ for Exposed Aggregate Cracks
JBC Enterprises of Virginia uses Roadware MatchCrete Clear to repair exposed aggregate concrete patios in Virginia.
Click here to see this technique and others using MatchCrete™ Clear.
Crack Repair Under VCT or Laminate Flooring
Use Concrete Mender™ to repair cracks, joints and curling slabs under VCT or tile floors. The permanent performance and 10 minute cure turns this 2 day job into a one day (or one night) job. Keep business running with minimal down time.
For spalled or failed control joints that are reflecting through the tile and the slabs are not curled, clean out the joints with a dust collecting diamond grinder.
Repair the control joints with Roadware 10 Minute Concrete Mender™, grind the surface flush and replace the tile.
For curled and buckled slabs, a major retailer specifies this heavy duty solution. This is the ultimate fix it once and fix it forever repair.
Step 1: Remove VCT, Ceramic, or vinyl floor coverings.
Step 2: Saw cut parallel lines to the crack at a depth of no less than 1.5 inches. Ideally 30% of the slab depth.
Step 3: Chip out the concrete between the saw cuts. Clean the surface well with a wire brush and vacuum.
Step 4: Add Roadware 10 Minute Concrete Mender and Sand to the finished grade. Also use Concrete Mender to repair the underlaying crack. See Concrete Mender™ Bulk Application Instructions.
Step 5: Replace the floor treatment and open to store traffic.
Stamped Concrete Patio Pop-out Repair
Repairing seasonal pop-outs in stamped and colored concrete is easy with MatchCrete™ Clear. Just add some powered pigment or grout to the clear MatchCrete™ aliphatic polyurethane and you can match most any color. Come back after 24 hours and give the repairs a light sanding to blend them in. See the short video below.
Broken Step Repair with Concrete Mender™
Vertical concrete repair with Roadware 10 Minute Concrete Mender™ is simple if you use a few basic techniques. The following is a repair to a spalled out concrete step. As with any concrete repair, the first step is to remove any loose concrete with a chisel and clean the repair area with a wire brush and a shop vacuum. Remove all dust, dirt and loose materials. Any moisture on the concrete surfaces should be allowed to dry. On occasion, I will use a heat gun to dry the concrete.
Click here for Concrete Mender Bulk Application Instructions.
Run cursor over photo to see description, Click on photo for gallery slide show.
Remove loose concrete.
Clean area with a wire brush.
Remove dust with a shop vacuum.
Make forms with pink or blue insulating board.
Fill with mixed Concrete Mender blended with sand.
Add Concrete Meder to grade.
Allow to cure for about 10 minutes at 70 degrees F.
Shape the repair contours with a rubbing stone.
Repair after finishing and shaping.
Re-coat the stairs with a latex concrete finishing material like QuickCrete Concrete Dressing.
Finish all surfaces for a uniform look.
Be sure to finish the sides as will.
Stairs are ready for use in a few hours.
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The 15″ deep concrete crack repair in Indonesia with Concrete Mender™.
Nick Dryer of Inservica Flooring in Jakarta demonstrates how a small amount of Roadware 10 Minute Mender can penetrate 15 inches deep into cracked concrete.
Warehouse Floor Repairs in the Dominican Republic.
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.
Stamped Concrete Crack Repair with MatchCrete™ Clear.
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.
Remove dirt, loose concrete, repair materials or failed caulk.
Use a diamond blade to slightly cut open the crack and clean out loose concrete and debris.
Use tape to mask off the crack.
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.
Dispence the MatchCrete™ Clear into a cup.
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.
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.