Jeffrey J. Thomas

TL;DR: The current state of knowledge of cement hydration mechanisms is reviewed, including the origin of the period of slow reaction in alite and cement, the nature of the acceleration period, the role of calcium sulfate in modifying the reaction rate of tricalcium aluminate, the interactions of silicates and aluminates, and the kinetics of the deceleration period as mentioned in this paper.

TL;DR: This study measures the composition and solid density of the principal binding reaction product of cement hydration, calcium-silicate-hydrate (C-S-H) gel, one of the most complex of all gels, and quantifies a nanoscale calcium hydroxide phase that coexists with C- S-H gel.

TL;DR: In this paper, a family of solubility curves for poorly crystalline calcium silicate hydrate (C-S-H) phases were derived from 29Si magic-angle spinning (MAS) NMR data and by charge balance calculations.

TL;DR: In this article, the authors investigated the effects of various additives in portland cement and found that a relatively small amount (1−4 wt %) of well-dispersed calcium silicate hydrate (C−S−H), a pure form of the main hydration product, significantly increased both the early hydration rate and the total amount of hydration during the early nucleation and growth period (the first ∼24 h), as measured by calorimetry.

TL;DR: In this article, small-angle neutron scattering (SANS), weight and length changes during equilibrium drying, and nanoindentation of C-S-H pastes are analyzed.