For architects, contractors, engineers, DOT personnel, and other professionals who work on residential, commercial, industrial, or infrastructure projects.
Products
Innovative, high-performance products for new construction, repairs and restoration.
Applications
Proven product solutions and resources for projects of any size, in any market.
Resources & Support
Professional resources designed to enhance your expertise.
Find A Dealer
Where to purchase Rapid Set® and Komponent® products.
For homeowners and do-it-yourselfers who like to DIY.
Professional-grade products for new construction, repairs and restoration.
How To's
Inspiration for your concrete projects — from repairs and restoration to decorative and fun.
Concrete Basics
Useful resources that help you become more knowledgeable about cement and concrete.
Find A Store
Where to purchase Rapid Set® products.
From A to Z
Alphabetical listing of Rapid Set® and Komponent® products
By Category
Innovative, high-performance products for repairs and restoration, flooring, grouting, pavements and overlays, stucco, shotcrete and fill, shrinkage compensating cement, sealants and adhesives, and additives.
CSI MasterFormat Divisions
CTS products organized by CSI MasterFormat subgroups and divisions.
We’re a close-knit group of employee-owners who are grateful for our customers, and the opportunity to provide the industry with innovative products and exceptional service.
Our Story
With hard work and loyal customers, one repair and restoration product has grown into well over 70 building material products.
Brands
Rapid Set® cement products, made with calcium sulfoaluminate (CSA) cement technology. Komponent® shrinkage-compensating concrete products, made with Type K cement technology.
Innovative Technologies
Learn about the speed, strength, and sustainability of Rapid Set cement products, and way to minimize cracking and reduce joints and curling with Komponent.
Leadership
We’re the leadership team who is inspired by the mindset, work ethic, and integrity of our employee-owners.
Careers
We’re looking for the right people to join us. Perhaps that’s you.
FREQUENTLY ASKED QUESTIONS
Rapid Set Low-P Repair Mortar is a blend of high-performance Rapid Set cement with an ASTM concrete grade sand, and high-performance additives. Low-P Repair Mortar is a specialty mortar that produces a low permeable, ASR resistant, corrosion resistant, fast setting concrete repair material that allows for early opening to traffic
Low-P Repair Mortar can be mixed neat or extended with a coarse aggregate. This allows the user flexibility to repair thin to thick horizontal applications with one product by simply choosing to use neat or extending with an aggregate. Low-P Repair Mortar is sulfate resistant, ASR resistant, and freeze thaw resistant.
No. The high-performance properties come from the Rapid Set cement technology.
In most applications, bonding agents are not required. Please follow surface preparation recommendations on Rapid Set products technical datasheets. If a bonding agent is required because these conditions cannot be met, or if the use of bonding agents is mandated, follow the bonding agent manufacturerӳ recommendation for installation. Rapid Set Cement All and Mortar Mix have been successfully applied in conjunction with a wide variety of surface applied bonding agents, including epoxy systems. Selection and suitability of the bonding agent is the responsibility of the specifier and/or the installer.
Blending with other products may give unpredictable results and is not recommended. The use of Rapid Set approved additives and various colors are acceptable.
Up to 6 inches neat and up to 24 inches extended with coarse aggregates.
Just add water to use as a grout or thin repair. If extending with a coarse aggregate, mix in aggregates last. The use of a mechanical mixer such as a mortar mixer or a drill mounted mixer (egg beater type) is recommended. To maximize working time, organize work so that all people and equipment are in place before mixing.
Use Rapid Set SET Control admixture to extend the set times. Later age strengths are not affected.
Fill to full depth and proceed horizontally. Do NOT place in layers that allow setting to occur between lifts. Use traditional finishing tools and methods. Low-P Repair Mortar is fast setting and does not bleed water, so apply your final finish immediately after placing. Cover and wet cure for an hour.
Water curing Low-P Repair Mortar installations is recommended. The objective of water curing is to maintain a wet surface until the material has gained moderate tensile strength. Begin water curing as soon as the surface has lost its moist sheen and continue for a minimum of one hour. As an alternative to water curing, curing compounds that meet ASTM C-309 Type II Class B may be used. Apply these curing compounds in accordance with the manufacturer's recommendations.
