Geoscience Reference
In-Depth Information
Subject
Method summary*
Observation
Slags
GGBS
Hydrofluoric acid vapour
4
: hold a few millimetres
GGBS particles turn white to blue.
above acid and etch in vapour for 2-10 s at room
temperature.
Blended cement
Blastfurnace cement
1% nitric acid solution
: immerse for 5-20 s (useful
GGBS unchanged. Silicates turn blue,
for estimating the slag content of blended cement
aluminates and ferrite golden.
composed of Portland cement and GGBS).
*
Full method details and safety requirements contained in the original references (listed below) should be consulted before a method is used
for the first time.
1
Campbell DH (1999).
Microscopical Examination and Interpretation of Portland Cement and Clinker
, 2nd edn. Construction
Technology Laboratories, a Division of the Portland Cement Association, Skokie, Illinois.
2
Lea FM (1970).
The Chemistry of Cement and Concrete
, 3rd edn. Edward Arnold (Publishers) Ltd, London.
3
Long GR (1983). Microstructure and chemistry of unhydrated cements.
Philosophical Transactions
, Royal Society of
London, A310, 42-51.
4
St John DA, Poole AB, Sims I (1997).
Concrete Petrography, a Handbook of Investigative Techniques
. Edward Arnold
(Publishers) Ltd, London.
