Study of C-S-H growth on C3S surface during its early hydration

Title: Study of C-S-H growth on C3S surface during its early hydration
Author(s): S. Garrault, E. Finot, E. Lesniewska, A. Nonat
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 38
Issue: 278
Issue date: 2005-05-01
Publication year: 2005
Pages: 435 - 442
Total Pages: 8
Nb references: 18
Language: English

Abstract: A study to understand and quantify the growth mode of C-S-H during the hydration of tricalcium silicate grains is presented here based upon number of complementary approaches: study of C-S-H nucleation during the hydration of tricalcium silicate compared with experimental studies of homogeneous nucleation; experimental kinetics studies of C-S-H formation during tricalcium silicate hydration in dilute suspensions; direct observations of C-S-H growth by Atomic Force Microscopy; Simulation of curves obtained from experiments in dilute suspensions from a model based on AFM observations.
With AFM the formation of CSH is observed by the agglomeration of identical elements 60x30x5 nm3 in size on alite surface.
This agglomeration takes place perpendicularly and parallel to the surface.
Numerical simulation of the experimental curves of the degree of hydration versus time enabled us to quantify the variation of the growth rates parallel and perpendicular to the surface with lime concentration.
It is shown that the rate of growth rate of C-S-H only depends on the lime concentration in solution.

Online publication: 2005-02-15
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/14343