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Strength and durability evaluation of Portland cement mortar prepared with hydrogen rich water

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Document pages: 10 pages

Abstract: We studied the effect of hydrogen rich water (HRW) on the strength and durability of Portland cement mortar. We compared and evaluated the performance of HRW based mortar (HWM) and cement mortar made of controlled water (CWM). The results show that the use of HRW can significantly improve the compressive, bending and splitting tensile strength of mortar in the early and late stage of curing. Durability was evaluated based on capillary absorption, ultrasonic pulse velocity (upv), dynamic modulus of elasticity (DEM) and resistivity (ER). We attribute the general improvement in the mechanical and durability of HWMS to the formation of more cement hydrates and fewer pores in a hydrogen rich environment. Based on X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscope (SEM) analyses, we deduce that the use of HRW in Portland cement mortars produces a more compact, dense, and durable microstructure with fewer voids due to a higher degree of hydration.

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