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CERTYD® aggregate

Lightweight prefabrication, structural strength, cost reduction

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Lightweight
Frost-resistant
Strength
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What is Certyd?

CERTYD is a unique, lightweight (bulk density 620-750 kg/m3), high-strength (concrete up to 75 MPa), frost-resistant porous construction aggregate, ideal for lightweight precast concrete. Thanks to its strength, it allows for savings by reducing the amount of cement in the concrete mix.

It has excellent thermal insulation (thermal conductivity coefficient 0.14-0.16) and acoustic protection properties. It is durable, resistant, and environmentally friendly – safe for people and the environment. Due to its technical parameters, it has a much wider range of applications than natural aggregates and expanded clay, being unrivalled competition for them.

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What makes it stand out

  • One of the most compressive lightweight aggregates
  • Much lighter than traditional aggregates while maintaining their strength
  • Allows for a reduction in the amount of cement in lightweight concrete
  • Excellent thermal and acoustic insulation properties
  • Frost resistance
  • Fire resistance
  • Vapor permeability
  • Safe for the environment and health
  • Resistance to moisture, fungi, mold, insects, and rodents
  • Competition for natural aggregates and expanded clay
  • Complies with PN-EN 13055 1-2 standards for lightweight aggregates
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Its purpose

Thanks to its versatility and technical parameters, CERTYD® is ideal for:

  • Concrete prefabrication
  • Lightweight structural concrete
  • Light industrial ceilings and thermal insulation

Use of aggregate

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Concrete blocks
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Beams
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Multi-layer walls
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Prefabricated elements

Aggregate characteristics

Strength
The most compressive strength among lightweight aggregates available on the market.
Lightness
Lighter concrete, strong structure.
Ecology
100% natural and environmentally friendly material

Available fractions of crushed aggregate

Fraction 1
Certyd 0-2mm
Fraction 2
Certyd 1-4mm
Fraction 3
Certyd 4-10mm

Customer reviews

"Flawless cooperation. The Certyd aggregate I ordered is consistent, which was very important for our project. The entire implementation went smoothly."
5/5
Construction manager
"Certyd is a unique aggregate, combining the characteristics of other lightweight aggregates and traditional construction aggregates."
5/5
Customer – manufacturer of prefabricated elements
"I have been working with lightweight concretes for many years and I must say that Certyd has allowed us to obtain concrete that is both lightweight and durable. There are a number of applications for this aggregate, from prefabrication to high-strength structural concretes."
5/5
Researcher – Department of Materials Strength

Comparison to competative aggregates

Aggregate properties Natural aggregate Synthetic aggregate
Expanded clay CERTYD®
Bulk density [kg/m³] 1260 - 2600 250 - 750 620 - 750
Crush strength [MPa] 20 - 120 1.0 7.0 – 9.0
Thermal conductivity coefficient [W/m•K] 1.73 – 3.98 0.13 - 0.16 0.14 – 0.16
Floats on water no yes no
Maximum concrete strength 120 MPa 20 MPa 75 MPa
Use of aggregate Natural aggregate Synthetic aggregate
Expanded clay CERTYD®
Lightweight structural concrete (up to LC60/66)
Lightweight concrete (up to LC16/18)
Lightweight structural concrete prefabricated elements
Lightweight precast concrete elements
Thermal insulation concrete
Fire-resistant concrete
Permeable concrete
Road construction
Geotechnical engineering
Drainage layers
Thermal insulation layers
Substrates for hydroponic cultivation
Floor and substrate insulation
Heated and industrial floors
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