UNDULATORY EXTINCTION OF QUARTZ IN BRITISH HARD ROCKS

Undulatory extinction suggests a level of instability in quartz. The degree of undulosity has been used, for some time, to indicate the potential reactivity of the quartz in ASR (alkali-silica reaction). The method of routine measurement of the degree of undulosity has been found to be inaccurate. A new method for this routine measurement is proposed, in addition to the assessment of grain textures. The results indicate that it is possible to classify the stability of the quartz by texture and undulatory extinction. (A) For the covering abstract see IRRD 871351.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0946691460
• Corporate Authors:

  THE CONCRETE SOCIETY

  FRAMEWOOD ROAD
  WEXHAM,   United Kingdom  SL3 6PJ
• Authors:
  • SMITH, A S
  • DUNHAM, A C
  • WEST, G
• Conference:
  • THE NINTH INTERNATIONAL CONFERENCE ON ALKALI-AGGREGATE REACTION IN CONCRETE, JULY 1992, LONDON, VOLUME 2
• Publication Date: 1992

Language

• English

Media Info

• Features: References;
• Pagination: p. 1001-8

Subject/Index Terms

• TRT Terms: Aggregates; Alkali; Chemical reactions; Conferences; Quartz; Test procedures
• Geographic Terms: United Kingdom
• ITRD Terms: 4577: Aggregate; 7353: Alkali; 8525: Conference; 4123: Quartz; 7156: Reaction (chem); 6288: Test method; 8119: United Kingdom
• Subject Areas: Data and Information Technology; Geotechnology;

Filing Info

• Accession Number: 00711159
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-946691-46-0
• Files: ITRD
• Created Date: Sep 20 1995 12:00AM