Use Roadware MatchCrete™ Clear, quartz sand, and portland cement to repair cracks in exterior concrete sidewalks and decks with a broom finish. MatchCrete™ Clear is a non-yellowing polyurethane bland that sets fast, bonds very well and can accommodate exterior conditions.
Tag Archives: polyurea
All about Roadware Flexible Cement II™.
Roadware Flexible Cement II™ is semi-ridged polyurethane for creating flexible bonds between concrete surfaces and other materials. This versatile material may also be used to protect contraction joints from traffic deterioration.
- What is Flexible Cement II? Proprietary Polyurethane Blend
- Formulation: Classified
- Manufacturing: South Saint Paul, Minnesota, USA
- Origin: Designed for creating flexible bonds between concrete surfaces and dis-similur materials.
- Function: To flow into concrete cracks and joints. Filling the void with a semi-flexible polyurethane the will accommodate heavy traffic.
- Military Use: Classified
- Civilian Use: Fill cracks, joints and spalls in commercial, industrial and civil applications.
- Service Life: Indefinite
- Cure Time: 10 Minutes at 70°F (21°C)
- Distribution: Worldwide Distributor Network
|The passenger tram at this airport gilds on pillows of air. Flexible Cement II is used to prevent the expansion joints from damaging the air pillows.|
|One of the 12 air pillows that support each car. Flexible Cement II™ prevents metal expansion joints from lifting up and cutting the air pillow as the car passes.|
|Flexible Cement II™ is used to protect the interface between the metal expansion joint and the concrete. This allows for a smooth surface for the air lift cars to glide over.
Use Flexible Cement II™ to repair sawn contraction joints and cracks
Roadware Contraction Joint Repair
Why are my contraction joints spalling and what can I do to stop it?
joints) are joints cut into a slab shortly after pouring. The purpose of these joints is to control the cracking of the slab as it cures. Most concrete slabs shrink and sometimes curl for the first 12 months after pouring. Contraction joints allow the
slab to crack at pre-determined intervals instead of natural random cracking. Joint filler is used to protect the joints from spalling and chipping caused by traffic on the slab.
As the slab cures for the first
12 months, it shrinks in size and may even curl up at the joints. The contraction joints will expand as the slab shrinks. This causes the joint filler to split apart or dis-bond from the sides of the joint leaving them exposed to traffic.
joint. The force of the load has to transfer from the wheel, to the concrete, and to the base. If the slab is even slightly curled and the joint is expanded, the force of the load will impact on the joint causing cracking and spalling. You may even get stress cracking parallel to the joint. You can sometimes feel the uneven load transfer across the joint if you stand with one foot on either side of the joint and have someone else roll a heavy load across the joint.
the top. This will stabilize the slab, restore aggregate interlock,
and allow for complete and even load transfer from the wheels all the way down to the base. Your contraction joint problems are solved.
is recommended for interior controlled environment applications with sound concrete and base. Exterior applications may have different results. Always test a small section
of large repair for compatibility.
Buy a gallon and make two. Good deal!
One gallon of Concrete Mender™ goes a long way.
One gallon of Concrete Mender™ will make 2.2 gallons of repair material when typically applied with 2 parts sand. That makes Concrete Mender™ a better value then most epoxies and polyureas. No other product we know of goes as far and performs as well. Any way you look at it, Concrete Mender™ is a better value even it it was twice the price.