Influence of environmental stresses on the properties of sealants

Liisa Rautiainen

Research output: Book/ReportReportProfessional

Abstract

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 constant indoor 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.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages19
ISBN (Print)951-38-4143-X
Publication statusPublished - 1992
MoE publication typeNot Eligible

Publication series

NameVTT Tiedotteita - Meddelanden - Research Notes
PublisherVTT
No.1330
ISSN (Print)1235-0605
ISSN (Electronic)1455-0865

Fingerprint

Sealants
Aging of materials
Concretes
Polysulfides
Facades
Ultraviolet radiation
Silicones
Polyurethanes
Binders
Durability
Water

Keywords

  • construction materials
  • facades
  • external walls
  • sealers
  • sealing compounds
  • stresses
  • properties
  • environmental effects
  • environmental engineering
  • behavior
  • elastic analysis
  • aging tests materials
  • test methods
  • concrete structures
  • durability
  • binders
  • (adhesives)
  • weathering
  • thermal resistance

Cite this

Rautiainen, L. (1992). Influence of environmental stresses on the properties of sealants. Espoo: VTT Technical Research Centre of Finland. VTT Tiedotteita - Meddelanden - Research Notes, No. 1330
Rautiainen, Liisa. / Influence of environmental stresses on the properties of sealants. Espoo : VTT Technical Research Centre of Finland, 1992. 19 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1330).
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Rautiainen, L 1992, Influence of environmental stresses on the properties of sealants. VTT Tiedotteita - Meddelanden - Research Notes, no. 1330, VTT Technical Research Centre of Finland, Espoo.

Influence of environmental stresses on the properties of sealants. / Rautiainen, Liisa.

Espoo : VTT Technical Research Centre of Finland, 1992. 19 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1330).

Research output: Book/ReportReportProfessional

TY - BOOK

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AB - 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 constant indoor 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.

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KW - external walls

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KW - sealing compounds

KW - stresses

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KW - environmental effects

KW - environmental engineering

KW - behavior

KW - elastic analysis

KW - aging tests materials

KW - test methods

KW - concrete structures

KW - durability

KW - binders

KW - (adhesives)

KW - weathering

KW - thermal resistance

M3 - Report

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T3 - VTT Tiedotteita - Meddelanden - Research Notes

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ER -

Rautiainen L. Influence of environmental stresses on the properties of sealants. Espoo: VTT Technical Research Centre of Finland, 1992. 19 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1330).