AIR LIME MORTARS WITH INCORPORATION OF SEPIOLITE AND SYNTHETIC ZEOLITE PELLETS

作者：Andrejkovicova Slavka^*; Ferraz Eduardo; Velosa Ana L; Silva Antonio S; Rocha Fernando

来源：Acta Geodynamica et Geomaterialia, 2012, 9(1): 79-91.

• lime
• mortar
• sepiolite
• synthetic zeolite pellets

The requirements of conservators who take care of historical monuments are that the materials for rehabilitation of old renders should have a composition as similar to the historical materials as possible and should provide improvement in durability. Fine and coarse sepiolite and synthetic zeolite pellets were chosen as additives in the development of lime mortars for conservation work, due to their unique adsorption properties providing water to the mortar system and acting as water reservoirs in conditions of low humidity. Flexural and compressive strength and the dynamic modulus of elasticity were studied at 28, 90 and 180 days of curing. Addition of both fine and coarse sepiolite and zeolite pellets caused improvement of mechanical strength of mortars, clearly evident at later ages of curing. Elasticity modulus ranged from 2.3 GPa to 3.6 GPa relating to a high deformation capability of mortars and confirming their suitability for use in conservation work.

• 出版日期2012