THE NATURE OF THE BOND BETWEEN DIFFERENT TYPES OF AGGREGATES AND PORTLAND CEMENT

IN ORDER TO STUDY THE NATURE OF THE PORTLAND CEMENT- AGGREGATE BOND, THE CEMENT-AGGREGATE INTERFACES OF FOUR DIFFERENT TYPES OF AGGREGATE ARE EXAMINED USING THE SCANNING ELECTRON MICROSCOPE. THE AGGREGATES USED ARE SAND, BASALT, GRANITE, AND LIMESTONE. THEY SHOWED SIGNS OF CHEMICAL ETCHING BUT NOT OF CHEMICAL BONDING WITH THE CEMENT HYDRATION PRODUCTS. THE RESULTS INDICATE THAT THE CEMENT- AGGREGATE BOND IS MAINLY DUE TO THE FREE SURFACE ENERGY OF THE CEMENT HYDRATION PRODUCTS AND THE VISCOSITY EFFECT OF THE SURROUNDING LIQUID PHASE PRESENT IN THE MORTAR. ATTENTION IS ALSO DRAWN TO THE SIMILARITY BETWEEN THE CEMENT-CEMENT BOND AND THE CEMENT-AGGREGATE BOND.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00194565
• Authors:
  • Chatterji, S
  • Jeffery, J W
• Publication Date: 1971-8

Language

• English

Media Info

• Features: Photos; References;
• Pagination: p. 346-9
• Serial:
  • Indian Concrete Journal
  • Volume: 45
  • Issue Number: 8
  • Publisher: Associated Cement Companies Limited
  • ISSN: 0019-4565

Subject/Index Terms

• TRT Terms: Aggregates; Basalt; Chemical bond; Granite; Limestone; Portland cement; Sand
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00214356
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: TRIS
• Created Date: Sep 25 1972 12:00AM