Promptis Fast Setting Concrete

Rapid Hardening Readymix Concrete


In an ever more demanding and extremely competitive environment, with tight deadlines and even tighter margins, speed and efficiency which save time are critical. Promptis, from CEMEX, is a new rapid hardening concrete solution that can help save valuable hours.

Promptis has similar characteristics to conventional concrete but it can reach accelerated early strength after just four hours and still maintains initial flow properties and workability for up to 120 minutes. Formwork can be stripped after only six hours (subject to mix design and guidance), saving time and money. It is an ideal solution for projects such as road and rail renovation, where the use of Promptis could help minimise traffic restrictions.

The properties of Promptis are the result of a carefully selected combination of specialist admixtures combined with expert mix design.

Promptis has been launched globally rather than just nationally, as it produces consistent results using a broad variety of cements, available in different countries. In addition there is global market demand, with Promptis suitable for use in both readymix and precast applications.

Features and Benefits

Fast Formwork - Fast formwork removal leading to increased productivity - within 6 hours (subject to mix design)



40N Strength In 24 Hours - Promptis is capable of delivering up to 40N of strength in just 24 hours


Rapid Construction - Promptis can be poured quickly and with minimum fuss

Reduces Costs & Delays - Reduced labour cost, reduced rental cost for construction equipment & no more delays on-site


Fast Setting Concrete - A unique concrete solution that existing products cannot provide


Easy To Compact - Promptis is both easy to compact and finish

Fast Demolding in Buildings:

Making it ideal for columns, walls, beams and slabs

Fast Demolding In Panels

Ideal for civil engineering projects such as tunnels, high walls and roads

Easy Handling in Precast Facilities

Including beams, panels, and other specific elemeets

Renovation and Repair

Ideal solution where there is limited time to carry out renovation or repair of structures, slabs, pavements

Case Study - Promptis

Tram Track, Ireland


When Ireland’s leading public works contractor needed to extend a tram line in just 36 hours, they approached CEMEX for a building solution. CEMEX responded with Promptis rapid hardening concrete innovation.

The customer needed to complete a vastly ambitious project: the extension of a tram track line required a concrete that could be cast in 16 hours, and be fully hardened, ready to open for traffic the following morning at 1am. Prior to the delivery date, tests were carried out to optimise the mix design and ensure that the targeted performance could be achieved in the expected cold weather conditions (as low as 5°C).

The team had only one working day and the weekend to prepare the ready-mix plant for the bold project. CEMEX came through and delivered results; only six hours after the last casting, the tram lines were handed over to the customer, ready to resume operation immediately

More Information about Promptis

CEMEX will provide you access to our highly experienced technical team who will be able to create bespoke mixes for all your readymix concrete needs. Our technical team has a vast experience of producing unique mixes for individual jobs, and can facilitate issues such as corrosive ground conditions, extreme weather conditions and high strength requirements. CEMEX will work to your specification, or if requested provide suggestions to ensure that we meet the specific needs of your project



Find Out More About Promptis