Concrete pipes, culverts and manhole products can be made with either semi-dry or wet-cast techniques - each providing its own unique set of benefits. Kraft Energy™ is proud to be an associate member of the both NPCA (National Precast Concrete Products Association) and the ACPA (American Concrete Pipe Association) – both promoting the benefits of concrete pipe and precast products.

Kraft Energy™ supplies, installs and commissions complete curing systems that will accelerate hardening and improve product quality.

Kraft Energy™ vapor curing systems include:

1. Vapor generator
2. Distribution pipe and hose
3. Temperature and humidity measurement and control
4. Curing tents and enclosures

Benefits of Vapor Curing Concrete Pipe, Culvert and Manhole Products

In semi-dry production, vapor curing saves money and improves product quality by:

1. Preventing premature drying after demoulding, which causes surface cracking, incomplete cement hydration and poor strength
2. Providing higher early green strengths, resulting in reduced breakage, increased productivity and a reduction in required cement content
3. Allowing concrete pipe to be handled in as little as eight hours
4. Allowing manholes and other smaller products to be handled within four hours

In wet-cast production, vapor curing saves money and improves product quality by:

1. Allowing green strength to be reached more quickly, thus allowing the product to be demoulded sooner (in as little as 2.5 hours)
2. Increasing mould usage to as many as 3 mould turns per production shift
3. More quickly transferring heat through the steel mould to the concrete versus hot air systems

Available Curing Systems

Concrete pipe, culvert and manhole products can be cured with Kraft Energy™’s entire line of Vapor Curing Systems, including the Quadrix™.