This study examines the influence of various
environmental stresses on the
behaviour of elastic facade sealants.
Five "aging methods" were used as follows: - aging in
conditions (reference specimens) - aging under the
influence of heat - "aging" under the cyclic influences
of heat and water (two
methods) - aging under UV radiation.
The influence of aging was studied with maintained
extension tests performed at
+23 °C, -20 °C and -40 C.
Fourteen sealants were studied using concrete sealant
concrete test specimens.
The results indicate major differences between specimens,
in both their cold
behaviour and resistance to stress factors.
The type of binder, however (silicone, polysulphide,
polyurethane or mixtures),
did not affect the durability of the
product. This appeared to depend on the commercial
product or sealant used.
The selected test methods appear to be good determinants
of product properties.
Products which passed the tests without
failure could be subjected to further and more severe
tests in order to
distinguish the excellent from the good.
|Place of Publication||Espoo|
|Publisher||VTT Technical Research Centre of Finland|
|Number of pages||19|
|Publication status||Published - 1992|
|MoE publication type||Not Eligible|
|Series||VTT Tiedotteita - Meddelanden - Research Notes|
- construction materials
- external walls
- sealing compounds
- environmental effects
- environmental engineering
- elastic analysis
- aging tests materials
- test methods
- concrete structures
- thermal resistance