EcoBlendTM
Type 1 Sub-base
SHW 803 November 2009
This brochure describes EcoBlend™Type 1 sub-base, amixture of recycled
and primaryaggregates, intendedfor use as a sub-base
under flexible or rigid pavements and footpaths.
EcoBlendTM Type 1 Sub-base
Technical DescriptionEcoBlend™ Type 1 is a mixture oftwo products, both compliant tospecification prior to blending. Theratio of blend is dependent on theneed to produce a product whichperforms to the requirements ofour road building and utilitycustomers. The recycled aggregateused in the mix is produced inaccordance with the QualityProtocol published by WRAP.
RequirementEcoBlend™ is tested to thespecification for Highways Works,Volume 1 Series 800 Clause 803Type 1 Unbound Mixtures. Testresults are available on request.
Benefits• Can reduce material costwhen compared with 100%primary aggregate.
• Offers a sustainable productwhich uses recycled material.
• Fully compliant tospecification.
• Robust product whichperforms well in a range ofapplications including trenchworkings and sports pitches.
• Effective use of waste.
DesignEcoBlend™ should beincorporated in a constructiondesign in the same way asprimary aggregate. Arecommended specification is…..the Type 1 sub-base shouldcomply with SHW Type 1 Clause803 (Nov 2009), which mayinclude EcoBlend™ Type 1produced in accordance with theQuality Protocol published byWRAP and available from DayAggregates (Tel: 0845 0654 655).
Grading forEcoBlend™
Type 1 Sub-base
Sieve size % Passing Each Sieve
63mm 100%
31.5mm 96%
16mm 74%
8mm 41%
4mm 26%
2mm 17%
1mm 12%
0.063mm 3%
SiteworkThe use of EcoBlend™ Type 1does not present any hazards tohuman health over and abovethose of more traditionalproducts (COSHH assessmentsare available on request).
It is important that any ‘Type 1’product including EcoBlend™should be laid with a suitablemoisture content andcompacted in accordance withthe Specification for HighwaysWorks.
Delivery to site can be loose orin bags.
SustainabilityThe use of EcoBlend™ Type 1rather than primary (quarried)aggregate will help designersand contractors address issues ofsustainability and resourcemanagement.
• The raw material forEcoBlend™ contains recycledconstruction and demolitionwaste. This reduces theenvironmental impact of theraw materials used on aproject.
• Proximity is applied to thelocal sourcing of the rawmaterials recycled content.
• The material is supplied as aproduct, not a waste.
Current Users ofEcoBlend™ Products• ClancyDocwra
• Smith Construction
Other ProductsThe other products which are
available in the EcoBlend™
range are:
• Sharp Washed Sand
• 0-20mm ballast
Case studies Please call or downloadfrom our website details ofrecent projects whereEcoBlend™ has been usedin the construction offootpaths, car parks, hardlandscaping or widening ofcarriageways.
www.daygroup.co.uk0845 0654 655
Transport Avenue, Brentford, Middlesex TW8 9HFTelephone: 020 8380 9600 Facsimile: 020 8380 9700
[email protected] www.daygroup.co.uk
Day Group supplies natural and recycled aggregatesto the construction and civil engineering industry
Issue 3 March 2012