CLEVA CRETE 842 RP

CLEVA CRETE 842 RP (Reo Protect) provides the water‑proofing technology of CLEVA CRETE 842 WP with an additional, premium corrosion-inhibitor, coating all steel during the plastic stage. This admixture is for applications specifically requiring CLEVA CRETE’S core technology of eliminating the route of moisture/chemical vapour ingress/egress. It goes into concrete designed to deal with extreme geo‑technical forces in high-rise construction, infrastructure, mine shafts, wharves and more. Using 842 RP gives your building superior durability, waterproofing, extended service life, chemical resistance and a completely protected steel which is at the core of every concrete slab.

The admixture is introduced into the concrete matrix at the batch plant or onsite into the concrete trucks through the chute. Its inclusion disrupts the normal capillary formation as concrete cures, forming a permanent moisture barrier for the life of the concrete.

Specifically designed for coat all steel during its plastic stage and prolong the life of a building as well as significantly reduce the risk of concrete cancer.

The final result is an extremely stable, long lasting and durable construction material that will stand the test of time for many years to come.

WHEN WOULD YOU USE 842 RP AS YOUR SOLUTION OF CHOICE?

CLEVA CRETE 842 RP has all the waterproofing attributes of the 842 WP but also coats the steel in its plastic stage to greatly reduce the risk of concrete cancer for the life of the structure in the below applications.

For Example

High Rise Construction
Infrastructure
Mineshafts
Wharves
Boat Ramps
Jetties
Chemical Plants
Any Extreme Environments

HOW IS MOISTURE VAPOUR AN ISSUE IN GENERAL CONSTRUCTION?

Concrete is the most stable of all construction materials but in any piece of concrete, millions of tiny bleed water tubes called capillaries are formed during the plastic stage due to the ‘free water’ (water added into the mix that is not necessary for hydration) floating to the top as it is the lightest variable in the concrete mix. These resultant capillaries cause all the major and significant issues in the flooring sector since the introduction of low VOC, water-based adhesives.

When using CLEVA CRETE admixtures, the usual ‘free water’ in the mix is retained within the concrete, and converted into C–S–H gel, reducing shrinkage, and ensuring insignificant to no future permeability. Having no capillaries throughout the slab means there is no egress of moisture vapours, which is the reason for demulsification and flooring failures. Hence, there is never a requirement for surface grinding and epoxy coating, as the concrete floor itself becomes the highly effective moisture barrier.

TECHNOLOGY HISTORY

This technology has been utilised in the US and Europe to completely resolve the moisture issues in concrete for over thirty-five years. It was originally used by the Romans for the last three centuries for most major projects ie. Colosseum, the Pantheon Roof and Aqueducts, and rediscovered in the early 1900’s by the American Army Corp of Engineers for the Hoover Dam project that has a 1000-year design life.

In Australia, CLEVA CRETE 842 RP was introduced to the Australian market in 2020 after nine years of extensive R&D into the correct formulations for the Australian market, using Australian only raw materials.

CLEVA CRETE completely resolves the moisture issue and is the solution of choice, being a risk-averse treatment protocol, assuring all stakeholders against flooring failures, and the associated delays, liability and frustration of dealing with unwanted moisture.

HOW DOES 842 RP COAT THE STEEL?

842 RP has a proprietary blend of three Australian minerals that, when combined with the many other chemical exchanges that take place whilst the concrete is in the plastic stage, have the ability to put a resistant shield around all ferrous elements in the concrete.

IF I USE 842 RP IN MY CONCRETE MIX DO I NEED TO GET GALVANISED OR STAINLESS STEEL REBAR?

Galvanised or stainless-steel rebar is always a product of choice where extreme seismic or mechanical movement is expected. Any coating system is never as effective as stainless steel itself, however, the 842 RP admixture is an exceptional alternative where the budget constraints do not justify the use of stainless or galvanised steel.