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Influence of silica fume on the microstructural development in cement mortars

✍ Scribed by Huang Cheng-yi; R.F. Feldman

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
498 KB
Volume
15
Category
Article
ISSN
0008-8846

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✦ Synopsis

Cement mortars containing 0, i0 and 30 percent silica fume were prepared at water/cement + silica fume ratios of 0.45 and 0.60. Compressive strength, Ca(OH) 2 and non-evaporable water contents and pore-size distribution were monitored up to 180 days.

Silica fume reacts with most of the Ca(OH) 2 formed during hydration within 28 days and improves the compressive strength of the mortar.

In addition it affects the pore-size distribution of mortars by reacting with Ca(OH) 2 formed around the sand grains and also with that dispersed throughout the cement paste.

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