Onshore Wind Foundation Solutions

Harestanes Windfarm Extension

Admixture solutions used in the concrete foundations of new onshore wind turbines

Client:

ScottishPower

Main contractor:

Farrans Construction

Concrete producer:

Barr Quarries

The challenge

The concrete specification required a DC-3 Class concrete with a water cement/ratio of 0.50 and a compressive strength of 35N/mm2 for the principal base.

The team had to supplying concrete throughout the winter and overcome challenging weather conditions. Due to the remote location of the plant (15 km from the main road), concrete deliveries had to be made using 63 km of internal roads.

Our solution

Concrete was supplied from November to August and Barr Quarries worked closely with Farrans Construction in order to produce 1400m3 of concrete per week.

The concrete specification for the principal base concrete was achieved using a CIII/B cement, crushed coarse aggregate from Barr’s Tongland Quarry and sand from Barburgh Mill. The concrete mix design incorporated Master Builders Solutions’ admixtures MasterGlenium SKY 903 and MasterGlenium SKY 544.