A.J. Al-Tayyib

TL;DR: In this paper, the authors used MAS-NMR measurements of cement to follow the hydration process in cement pastes and found that compressive strength showed a linear dependence on hydration as characterized in terms of the NMR Q 0, Q 1 and Q 2 silicate polymerization states.

TL;DR: In this paper, the effect of heating/cooling cycles on the durability of concrete made from available limestone aggregates in the Arabian Gulf countries was investigated and the results indicated that the experimentally determined values of the coefficient of thermal expansion vary from 5.07 to 9.99 × 10 −6 /°C.

TL;DR: In this paper, the role of sulfate ions on reinforcing steel corrosion has been investigated and the results indicate that in the presence of sulfates and at 22°C, active corrosion results from modification of the protective passive film to a sulfate film which is less protective than that of the original iron oxide film.

TL;DR: In this paper, the effect of polypropylene fiber reinforcement (0.2 % by volume of concrete) on the workability, plastic shrinkage, drying shrinkage and strength of concrete was studied in a detailed test program.

TL;DR: In this article, 29Si magic-angle-spinning nuclear magnetic resonance measurements were used to trace the cement hydration process in cement paste and mortar specimens made from ordinary portland cement, type I.