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NMR Relaxation Study of Adsorbed Water in Cement and C 3 S Pastes
Author(s) -
BLINC R.,
BURGAR M.,
LAHAJNAR G.,
ROŽMARIN M.,
RUTAR V.,
KOCUVAN I.,
URŠIČ J.
Publication year - 1978
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.1151-2916.1978.tb09224.x
Subject(s) - adsorption , deuterium , cement , portland cement , materials science , silicate , proton , hardening (computing) , relaxation (psychology) , spin–lattice relaxation , chemical engineering , analytical chemistry (journal) , chemistry , composite material , organic chemistry , social psychology , physics , layer (electronics) , quantum mechanics , engineering , psychology
The deuteron and proton spin‐lattice and spin‐spin relaxation times T 1 and T 2 of adsorbed water in commercial portland cement and tricalcium silicate pastes were studied as functions of the hardening time at room temperature. The time dependence of the water self‐diffusion coefficient of tricalcium silicate pastes was also followed. The proton and the deuteron T 1 and T 2 decrease markedly as hydration increases and the pastes harden due to the increase in the active surface and the number of adsorptive sites, thus providing convenient tools for studying the nature of the hydration process.