Leiths Newsletter Issue 21 - Magazine - Page 6
QUARRIES DIVISION
ISSUE 21
IBAA Trials at Loch Hills Concrete Plant
LEITHS HAVE RECENTLY SUCCESSFULLY COMPLETED
TRIALS USING INCINERATOR BOTTOM ASH AGGREGATE
(IBAA) AT LOCH HILLS CONCRETE PLANT.
Trials were carried out replacing 20% of coarse aggregate with 20% IBAA
supplied by Recycl8. Recycl8 collaborates with the Waste to Energy sector
incorporating IBAA, often destined for landfill, into a high-performing, lowercarbon concrete solution for the construction industry. The concrete trialled
exceeded our initial expectations, producing concrete that had excellent
workability retention and achieved the required strength development.
Further successful trials were carried out using the IBAA mix with the addition
of Leiths’ CemLime® replacing high CO2 emitting cement to further reduce
the CO2 content of the concrete. On completion of the trials, the concrete
was supplied to our Lochton Precast Factory, who manufactured low carbon
interlocking concrete blocks.
Using IBAA, destined for landfill and locally sourced lower-carbon cement
replacements like our CemLime®, enables Leiths to produce high-quality
sustainable concrete with a lower carbon footprint to the construction
industry.
IBAA material.
Section through concrete with IBAA.
Crusher 257 Refurbishment
at Blackhills Quarry
CRU257 came up to the yard for a full refurb in April 2023. A lot of man hours, new parts, a complete rewire and
a refurbed engine later, the makeover was complete. It is back down at Blackhills performing well and looking
like a new machine.
The LT125 Nordberg Jaw Crusher is 24 years old but looks and performs now like a new crusher. A delighted
Rab Chalmers is now the operator looking after the plant, under the watchful eye of Bert Archibald, Blackhills
Quarry Manager, who has managed the use of the crusher since day one.
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