Accession Number : AD0773628

Title :   Dry and Wet Laboratory Tests and Thermal Fatigue of Rocks.

Descriptive Note : Final technical rept.,

Corporate Author : INSTITUTO SUPERIOR TECHNICO LISBON (PORTUGAL) LAB OF MINERALOGY AND PETROLOGY

Personal Author(s) : Aires-Barros,L. ; Graca,R. C. ; Velez,A.

Report Date : DEC 1973

Pagination or Media Count : 26

Abstract : The report is on the weathering and weatherability of three types of igneous rocks (granite, nepheline syenite and lamprophyric dyke) which is carried out by means of laboratory tests. For this purpose an apparatus was constructed in order to obtain hot conditions alternating with room temperature and also with wet conditions by immersion in two types of liquids (distilled water and a solution simulating 'sea water'). From the research covering one year of laboratory work, some conclusions are presented, regarding: The action of dry tests (heating and cooling alternating) on rocks, the action of wet tests (with distilled water and saline solution) on rocks, and an attempt of application of an alterability index of rocks. (Modified author abstract)

Descriptors :   *Igneous rock, *Weathering, Thermal fatigue, Laboratory tests, Portugal, Granite, Photographs

Subject Categories : Geology, Geochemistry and Mineralogy

Distribution Statement : APPROVED FOR PUBLIC RELEASE