UHPC Compressive strength over 300 MPa / 43500 psi

"I need a UHPC building product with a minimum compressive strength of 310 MPa / 44960 psi, it should be easy, mouldable and flexible to process without special machinery". 

That was the requirement of a very special customer. We had already received and developed a similar requirement over 20 years ago. Special requirements are placed on us every day, but such extreme requirements and a corresponding demand of several hundred tonnes were already exceptional.

 

Here is a comparison with other standard building products:

Low Carbon Steel (e.g., A36): Low carbon steels, such as ASTM A36, typically have a compressive strength in the range of 250 MPa to 400 MPa. These steels are commonly used in construction and structural applications.

Austenitic Stainless Steel (e.g., 304, 316): These alloys are generally not very strong in terms of compressive strength and typically have compressive strengths in the range of about 200 MPa to 500 MPa.

Fiber-Reinforced Composites Composites reinforced with fibers such as carbon fibers, glass fibers, or aramid fibers can have very high compressive strengths. The compressive strength of these composites can range from 100 MPa to over 1,000 MPa, depending on the type and orientation of the fibers, the resin matrix, and the manufacturing process.

Particulate-Reinforced Composites Composites that use particles or powders as reinforcements, such as metal matrix composites (MMCs) or ceramic matrix composites (CMCs), can have compressive strengths ranging from 100 MPa to 600 MPa or more, depending on the type and volume fraction of the particles and the matrix material.

Natural Fiber Composites Composites made from natural fibers like hemp or flax combined with a resin matrix typically have lower compressive strengths, usually in the range of 20 MPa to 200 MPa.

Normal Strength Concrete (NSC) Typically, ordinary or normal strength concrete used in most construction applications has a compressive strength in the range of 20 MPa (about 2,900 psi) to 40 MPa (about 5,800 psi). This is suitable for most residential and commercial structures.

WPE-DK UHPC Dia 300 is a fibre reinforced castable UHPC concrete with a compressive strength of more than 300 MPa (about 43,500 psi) after 28 days. It is mixed in a pan mixer.

WPE-DK UHPC BlackBox Concentrate

The new WPE-DK UHPC BlackBox Concentrate System was developed by us to give our customers the flexibility
to manage material logistics with suitable local raw materials and drastically reduce costs.

By reducing lengthy material deliveries, CO₂ is significantly reduced.

What is the UHPC BlackBox Concentrate?

UHPC BlackBox Concentrate System uses a new technology of UHPC binders to which suitable locally produced cement and aggregates can be added as additives.

What are the advantages of the UHPC BlackBox Concentrate?

UHPC BlackBox Concentrate uses suitable, locally produced cement as an additive, which leads to a reduction in material costs and makes material procurement flexible and short term.

It also significantly reduces freight/logistics costs. Our customer can plan more flexibly and has lower storage costs.

For which customers / projects is our UHPC BlackBox Concentrate an advantage?

For all customers/projects that have a regular UHPC concrete material requirement. Such as companies from the offshore, industrial flooring, prefabricated construction, architecture, civil engineering, security, corrosion protection, wear protection, military, road construction, etc.

For architects and planners, the UHPC BlackBox Concentrate offers an extremely wide range of possible combinations through the use of grey cement or white cement in combination with mineral and metallic materials as well as wood, plastic, glass, etc.

How sustainable is the UHPC BlackBox Concentrate?

Concrete made with a UHPC BlackBox Concentrate has a much longer life expectancy than standard concrete. Concrete made with our UHPC BlackBox Concentrate is 100% recyclable. Our UHPC BlackBox Concentrate can use recycled material as aggregate.

With UHPC BlackBox Concentrate we can produce concretes that require much less cement than standard concrete, which significantly reduces the CO₂ content. In every suitability test of local customer cements, we check a minimisation of the cement content.

Which concretes can be produced with the BlackBox Concentrate?

There are three Black Systems, one for UHPC mortar, UHPC castable and UHPC shotcrete.

How can quality be ensured?

We have a team of experienced supervisors and representatives to assist our customers and / or their local contractors with the production, quality assurance and installation of UHPC BlackBox Concentrate.

We offer free training to our customers.

For special installations, such as offshore installations, we can also use complete mobile production and mixing plants. The entire system is installed modularly in containers and is extremely mobile

In which packaging units is UHPC BlackBox Concentrate delivered?

As standard packaging, we deliver UHPC BlackBox Concentrate in 25 kg paper bags or in 1 ton BigBags.