Technology

Ultra High Performance Concrete
the innovative high-tech material

Ultra High Performance Concrete (UHPC) is an innovative high-tech material based on nanotechnology. It is a cement-bonded mineral casting with outstanding mechanical properties, optimum economic efficiency and a wide range of applications.

Our solutions made of UHPC meet the highest requirements in terms of accuracy, stiffness, vibration damping, temperature resistance, compressive strength and durability. In combination with its function-integrating character, the advantages of this high-performance material far exceed those of conventional alternatives in machine engineering and industry such as steel, grey cast iron or cast iron. Our solutions also set new standards for architects and engineers in the construction sector.

Download Sheet

Technical information

Here you will find an overview of all relevant technical material data for download.

Know-howin concrete technologies

With our know-how in concrete technologies, we develop a concept tailored to your application and a corresponding recipe to achieve optimum properties and the most economical production. In this way, we can specifically influence the material properties and adapt them to your individual needs. In addition, the mechanical behavior can also be optimized by adding fibers or textile elements, for example, or by prestressing on our tensioning track.

Material data

characteristics	uhpc e45	design value e45	uhpc e80	design value e80
compressive strength f_cm	> 125 MPa	σzul= 40 MPa	> 150 MPa	σzul= 40 MPa
flexural tensile strength f_ctm	15 MPa	σzul= 5 MPa	20 MPa	σzul= 5 MPa
centric tensile strength	–	σzul= 3 MPa	–	σzul= 3 MPa
static modulus of elasticity E_c	46,500 MPa	45,000 MPa	84,500 MPa	80,000 MPa
dyn. modulus of elasticity E	55,600 MPa	–	89,600 MPa	–
poisson´s ratio μ	0.19 [ - ]	0.20 [ - ]	–	0.20 [ - ]
density hardened concrete ρ_c	2,480 kg/m³	2,500 kg/m³	2,790 kg/m³	2,800 kg/m³
specific thermal capacity c_p	1.2 J/gK	1.2 J/gK	0.85 J/gK	0.85 J/gK
thermal conductivity λ	3.0 W/mK	3.0 W/mK	6.0 W/mK	6.0 W/mK
thermal expansion α_T	12.0 · 10^-6 [1/K]	12.0 · 10^-6 [1/K]	7.0 · 10^-6[1/K]	7.0 · 10^-6 [1/K]

Material comparison

characteristics	uhcp e45 \| e80	mineral cast/ polymerconcrete	natural stone	cast iron	ordinary concrete
density ρ_c [tons/m³]	2.5 \| 2.8	2.3 – 2.4	2.9 – 3.0	7.2 – 7.4	2.3
pressure strength f_cm [MPa]	> 125 \| > 150	110 – 150	250 – 360	-	5 – 55
flexural tensile strength f_ctm [MPa]	15 \| 20	30 – 35	13 – 35	100 – 800	0 – 5
dyn. modulus of elasticity E [MPa]	45,000 \| 80,000	38 – 45,000	65 – 120,000	80 – 185,000	22 – 40,000
thermal conductivity λ_R [W/m•K]	3 \| 6	2.9 – 3.0	1.7	29 – 54	2
specific heat capacity c_p [J/g•K]	1.2 \| 0.85	0.7 – 0.9	0.85	0.46 – 0.63	1
thermal expansion α_T[10^-6 • K^-1]	12 \| 7	15	5.5 – 7.5	9.5 – 10.5	10 – 11

Vibration damping

The damping performance of UHPC is comparable with natural stone and epoxy resin-bonded mineral castings and up to ten times better than grey cast iron.

material	log. damping decrement Λ	damping ratio D [%]
uhpc e45	0.030	0.50
uhpc e80	0.021	0.33
durfill	0.035	0.56
cast iron gg	0.003	0.05
steel s235	0.001	0.02

uhpc concrete e45

aluminium

temperature resistance

Due to the material-specific high thermal capacity and the low thermal conductivity of UHPC, fluctuating ambient temperatures are only passed on in a very reduced form. Solutions made of UHPC therefore react much more sluggishly to heat build-up than conventional grey cast iron components.

sustainability

Compared to other materials, our high-tech material UHPC has an excellent ecological balance:

Proven to produce 30 % less primary energy than grey cast iron
A project funded by the German Federal Ministry of Education and Research has shown that our UHPC leaves a much more favourable ecological footprint than epoxy resin-bonded mineral casting
Easy disposal as construction waste
Utilization as recycling material in the construction industry
Longer durability and lower material usage than normal concrete