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Si MAS‐NMR Study of Hydrated Cement Paste and Mortar Made with and without Silica Fume
Author(s) -
AlDulaijan Salah U.,
AlTayyib AbdulHamid J.,
AlZahrani Mesfer M.,
ParryJones Gwilym,
AlMana Abdulaziz I.
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb08806.x
Subject(s) - silica fume , cement , portland cement , compressive strength , mortar , materials science , composite material , mineralogy , nuclear chemistry , chemistry
This paper presents 29 Si MAS‐NMR measurements that trace the hydration process in both cement paste and mortar specimens made from ordinary portland cement, Type I, when the cement content is replaced by 0, 10, 15, and 20 wt% of silica fume. The specimens were moist‐cured for 3, 7, 14, 28, 90, and 180 days at a laboratory temperature of 21°C (69.8°F). Compressive strength for all tested specimens was also determined. The results show that the degree of hydration (Q 1 + Q 2 )/(Q°+ Q 1 + Q 2 ) increased with increasing content of silica fume, especially at the early ages of 3 to 28 days. In the same manner, compressive strength results were markedly increased up to 14 days and were lowered at later ages, compared to the control mix (0 wt% silica fume).