A leading supplier of
Sustainable
aggregates
For every tonne of IBAA used in construction, approximately 1.13 tonnes of primary / virgin aggregate remains in the ground
IBA Aggregates
Johnson’s focuses on the recovery and recycling of Incinerator Bottom Ash (IBA), a byproduct from Energy-from-Waste facilities, turning it into sustainable construction material.
By recycling IBA into IBAA, Johnsons Aggregates significantly reduces landfill waste and lowers the carbon emissions associated with traditional aggregate production.
We operate under strict environmental and quality standards to ensure that the IBAA produced is safe, consistent, and suitable for a wide range of civil engineering and infrastructure projects.
We operates under strict environmental and quality standards to ensure that the IBAA produced is safe, consistent, and suitable for a wide range of civil engineering and infrastructure projects.
Performed as described, used the ECO Type 1 throughout the project and never had an issue with quality or performance
Keil Carthy, Project Manager, Moortown Group
Practical benefits: IBA Aggregates inherent cementitious properties allow for improved binding and strength development when used in sub-base and fill materials, contributing to durable and stable groundworks. They are naturally resistant to frost heave, reducing the risk of ground movement and surface cracking in colder climates, and have a lower density compared to primary aggregates, making them significantly lighter.
Benefits of IBAA
Commercial: IBA Aggregates offer the same quality profile as quarried aggregate products at a reduced cost. With a typically lower compacted bulk density when compared with quarried products you require 12% – 13% less IBA Aggregate for your projects. Plus, there’s the added benefit of zero tax per tonne.
Low Carbon: Our IBA Aggregates feature low embodied carbon levels compared to primary and recycled materials and are supported by environmental product declarations. In fact IBA Aggregates even sequester CO2e. This makes them a more sustainable choice compared to recycled and quarried materials.
Resource efficiency: IBA Aggregates provides a new life to materials. By replacing the need for primary aggregates, IBA Aggregates also help conserve valuable natural resources and reduce the environmental impact of quarrying activities as well as significantly contributing to landfill diversion.
Compliant: IBA Aggregate is in scope for the Specification for Highways Works (SHW) Series 800 road pavements — unbound, cement and other hydraulically bound mixtures, where as a manufactured aggregate it is a permitted constituent for all unbound mixtures including Type 1 (clause 803) subbase, and Cement and Hydraulically Bound Mixtures (HBM). IBA Aggregate is also in scope for the Specification for Highways Works (SHW) Series 600 Earthworks, where it is a permitted constituent for use as capping or fill. IBAA can be specified using criteria in EN13242 – Aggregates for Unbound and Hydraulically Bound Mixtures.
Our IBAA Products
Rigorous testing
Rigorous Testing Standards: Johnsons Aggregates conducts thorough internal and external testing to ensure the quality and safety of its recycled materials.
Accredited External Testing: External testing is carried out by UKAS-accredited laboratories in accordance with ISO/IEC 17025 standards and against the appropriate Specification for Highways Works, ensuring reliable and traceable results.
Comprehensive Internal Monitoring: Internally, the company performs a regular and rigorous schedule of testing, with daily reviews of results to maintain consistent quality control.
Sampling Review Meetings: Bi-monthly quality meetings are held to assess testing outcomes, identify trends, and drive continuous improvement in product performance and compliance.
Compliance
Specification for Highways Works: Johnsons Eco Type 1 IBAA complies with Specification for Highway Works 803 and 6F5 with Specification for Highway Works 600.
Aggregates for Unbound and Hydraulically Bound Mixtures: Our factory production control system is certified to BS EN13242 and audited twice annually by BSI
Regulatory Position Statement 247: Although not hazardous, IBA Aggregate is currently still considered a waste and therefore requires a regulatory tool for its use. Whilst the EA and IBA processors continue to work towards a permanent permitting solution, the current regulatory tool for IBA Aggregate to be used in construction projects is set out in the EA`s Regulatory Position Statement 247
Using unbound incinerator bottom ash aggregate (IBAA) in construction activities: RPS 247 - GOV.UK
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