Stakeholders in the construction industry met at the annual Aggregates Forum
held by WRAP (Waste &
Resources Action Programme) last week, to understand the developments in the
use of recycled and secondary aggregates and address the barriers to their increased
use in the construction industry.
WRAP is working with these stakeholders to promote the sustainable use of resources
for the production of aggregates through spreading good practice and addressing
technical and legislative barriers.
WRAP briefed Forum members on the broader developments within the WRAP Construction
Programme as well as the Aggregate Programmes progress in research, the
AggRegain website development and capital support.
Research projects published in 2006 and available in WRAP publications included:
the sustainable use of resources for the production of aggregates in England;
good practice guidance on the use of hydraulically bound materials (HBM)
in working platforms.
Further project reports to be published in 2007 include:
the development of new performance test methods for HBM mixtures;
the development of durability tests for HBM mixtures;
investigating the effects of recycled and secondary aggregates on the engineering
properties of concrete; and
testing of concrete produced with recycled and secondary aggregates to
determine the effect on ground water and the environment.
WRAP also reported on the achievements of its capital support programme. This
programme provides financial assistance of up to 30% towards the capital cost
of processing plants, equipment and infrastructure for projects, which would
not be financially viable without this assistance.
To date, the programme has successfully supported 51 projects across England
and Scotland, encouraging an additional £22m of private investment and
increasing the annual processing capacity for recycled aggregates by 3.6 million
tonnes. The recent focus has been on projects producing high quality and therefore
high value aggregates suitable for use in added value applications such as concrete.
A new capital support programme covering England and Scotland will be launched
at the end of March 2007.
WRAPs AggRegain website
(www.aggregain.org.uk) provides a wealth of information on all aspects relating
to recycled and secondary aggregates in construction. Last year saw this information
service expanded yet again. In the light of recent carbon neutral targets set
by the government, those attending were particularly interested to hear about
the CO2 emissions estimator tool enabling clients and contractors to compare
the CO2 impact of different materials and construction processes. A new Opportunities
section was also added providing a user-friendly model for matching materials
with applications. Forum members acknowledged that the site is an invaluable
John Barritt, Aggregates Technical Advisor at WRAP, commented: These
forums have taken place for five years and have always proved very popular with
stakeholders in the industry. The events provide an opportunity to discuss the
latest developments being made in the use of recycled and secondary aggregates,
and a chance to listen to the industrys views.