Policy Position

EuLA: Lime in mortars – Hydrated lime – Benefits of use in mortars

Sep 01, 2023

Bibliography review by Lucideon

Building lime (Calcium Hydroxide or air lime) has been used in construction for thousands of years as a binder. The Romans were using air lime in combination with natural and artificial pozzolans in their buildings. Mortar formulations have developed over time and it was common practise in the last century to combine air lime and cement. In this way, lime has been used extensively as a component of masonry mortars and renders in order to provide the mason or bricklayer better mortar workability in the fresh state. These benefits essentially relate to the development of better water retention and air entrainment. In addition, as a result of the reaction with carbon dioxide from the air, the lime hardens and contributes to the overall strength of the mortar.

Although widely used, there is only a limited scientific or technical literature base that supports the beneficial attributes either in the fresh or hardened state. This paper reviews what literature is available and the types of benefits that lime brings to the performance of cement based mortars, not only in the fresh state, but also in the hardened state. This paper explores what evidence is in the literature and highlights the benefits of the use of lime in mortars.

Benefits of hydrated lime in mortars

Latest News & Events

EuLA's 2024-2029 Manifesto

May 13, 2024
Brussels, Belgium- May 2024, European Lime Association Sets Course for the Future with a Manifesto f...

EuLA Convenes Roundtable Discussion on Lime in Soil Treatment Applications

Mar 14, 2024
Brussels, Belgium – March 14, 2024 – The European Lime Association (EuLA) hosted a succe...

EuLA has signed the Antwerp Declaration

Feb 21, 2024
On 20 Feb 2024, 73 European industry leaders across almost 15 sectors (including EuLA) have presente...

EuLA Co-Signed a Joint-Letter Together With Other 23 Stakeholders

Nov 10, 2023
Urgent Call for Action: Ensure the Net Zero Industry Act CO2 Storage Injection Capacity Target prote...

The European Lime Association Elects New Board President and Board Members

Aug 31, 2023
European Lime Association, the leading advocacy and representative body for the Lime Industry across...

EuLA’s feedback on the European Commission’s public consultation on the Net-Zero Industry Act

Jun 27, 2023
The European Commission published the Net Zero Industry Act (NZIA) as a key element of the Green Dea...