Self-Healing Concrete

0 Reviews

0 Followers

0 Likes

4 Deploys

Increasing the watertightness, durability & sustainability and reducing the maintenance of concrete

Page last modified

April 11 2024

Basilisk Self-Healing Concrete is developed at the Delft University of Technology and is based on a autonomous repair system which is made possible by limestone-producing micro-organisms (bacteria). When the bacteria come in contact with oxygen and water, they are capable of converting certain nutrients to calcium carbonate (limestone). Due to the formation of limestone, cracks are autonomously repaired, increasing the durability and watertightness of the concrete structure.

Pros & Limitations

Concrete with Basilisk Healing Agent can repair its own cracks without any human interaction

Concrete structures executed with Basilisk Healing Agent require less maintenance - therefore, it’s specifically suitable for structures where crack formation adds up to the maintenance requirements

Adding Self-Healing properties to concrete increases its quality and durability performance, resulting in lower Life Cycle Costs

Self-Healing Concrete seals its own cracks, making special coatings or waterproofing membranes redundant

Because of it Self-Healing capabilities, larger crack-widths can be accepted in the design, limiting the required amount of shrinkage rebar

Self-Healing Concrete seals cracks up to 1 mm crack-width (depends on dosage)

Use Basilisk Self-Healing Agent to solve the common crack-control issues in recycled concrete

Self-Healing Concrete with longer service life, without membranes, with less reinforcement or executed as recycled concrete will reduce concrete’s CO₂ footprint significantly

By adding the Self-Healing Agent to the concrete mix, you are adding some costs as well. Fortunately, thanks to its added value its easy to end up with a business case

Specification

Specification Title	Specification Description
Maintenance	Self-Healing Concrete repairs its own cracks, reducing maintenance costs.
Asset Management	This technology offers longer service life of your concrete structures.
Coatings	With the Self-Healing Agent, concrete can be executed watertight from the concrete plant, without the need of special coatings.
Watertightness	Concrete that is able to seal its own cracks and pores can be frequently executed as watertight concrete directly from the concrete plant without the need of special coatings and/ or membranes.
Low Carbon Concrete	Self-Healing Concrete makes it possible to reduce a huge amount of shrinkage reinforcement and balances the lack of autogenous healing properties when replacing up to 60% percent of Portland cement.