Steam-slaked lime - Phase III: Comparison of the properties of mortars made with steam-slaked lime with mortars made using other types of lime.

Contract summary

Industry

• Research services - 73110000

Location of contract

England

Value of contract

£34,158.28

Procurement reference

C/REF 00000025

Published date

23 February 2022

Closing date

16 January 2022

Closing time

5pm

Contract start date

17 January 2022

Contract end date

16 August 2022

Contract type

Service contract

Procedure type

Single tender action (below threshold)

Contract is suitable for SMEs?

Yes

Contract is suitable for VCSEs?

No

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Description

This purchase is for Phase III of research to investigate the role of steam in the hydration (slaking) of calcium oxide (quick lime) and how this influences the properties and performance of steam-slaked lime and how this in turn affects mortar performance. Phase I, carried out in 2018, determined that steam-slaked lime has a significantly different microstructure compared to lime slaked in other ways. Phase II (commenced in 2020, but is only just being completed because of delays due to coronavirus restrictions) has shown how these microstructural differences affect water demand, water retention and carbonation of mortars made with steam-slaked lime. It is proposed that Phase III will consider in more detail the properties of mortars made with steam-slaked lime compared to mortars made with different types of lime, focussing in particular on permeability and moisture transport properties, and frost and salt resistance.

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Award information

Awarded date

16 January 2022

Contract start date

17 January 2022

Contract end date

16 August 2022

Total value of contract

£34,158.28

This contract was awarded to 1 supplier.

University of Northumbria at Newcastle

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About the buyer

Contact name

Alison Henry

Address

The Engine House
Swindon
SN2 2EH
England

Email

Procurement-HE@HistoricEngland.org.uk