CALCIUM RELEASE FROM CEMENT SAMPLES OF DIFFERENT SIZE
Leach tests on cement samples on the laboratory scale have been carried out to investigate the influence of the geometrical surface on the leach rate of cement constituents. Samples of hydrated Ordinary Portland Cement (OPC) 325* were made by blending clinker powder and distilled water at w/c = 0.35. The paste was cured at 60 degrees C and 98% Relative Humidity for 11 days in 2 cm diameter polystyrene containers. Samples 1, 3 and 3.5 cm high were leached in distilled water at 50 degrees C and at a geometrical surface to liquid volume ratio SA/V = 0.1 cm**-1. For the samples considered, the size had no significant effect on the values of the leach rate L-R in g cm**-2d**-1 vs the leaching time.
Bibliographic Reference: CEMENT AND CONCRETE RESEARCH, VOL. 16 (1986), NO. 3, PP. 394-398
Record Number: 1989124132200 / Last updated on: 1987-01-01
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