Discussion
Which of the following ASTM guidelines are for examination of portland cement clinker ?
(a) ASTM C 114-18
(b) ASTM C 1356-07
(c) ASTM C 1365-18
(d) ASTM C 1872-1892
Choose the correct answer from the options given below :
Answer: B
The clinker standards are (b) and (c) only.
ASTM C1356 is the test method for the quantitative determination of phases in Portland cement clinker by microscopical point-count procedure, and ASTM C1365 covers determining the proportion of phases in Portland cement and Portland cement clinker by X-ray powder diffraction. Both examine clinker directly.
ASTM C114 is the standard for the chemical analysis of hydraulic cement, not an examination of clinker phases, and 'C 1872-1892' is not a valid standard designation, so options including (a) or (d) are wrong.
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