Abstract
This article reports the potential use of waste glass powder (GP) to improve the performance of concrete subjected to freeze-thaw (FT) cycling. Three GP contents were utilized in the study: 6%, 12%, and 18% by weight of cement. The other experimental parameters that were investigated in the study include: water to cement ratio (0.4 and 0.6) and aggregate type (limestone and tuff). Concrete prisms were exposed to accelerated FT cycles following ASTM Procedure B (rapid freezing in air and thawing in water). The FT damage of concrete prisms was evaluated using the relative dynamic modulus of elasticity and durability factor of concrete prisms.
Highlights
The phenomenon of temperature fluctuating in concrete structures above and below freezing of water is called freezethaw (FT) cycles
This study presents the results for the effect of glass powder (GP) on the resistance of concrete to FT damage
Based on the results obtained from this study, the following conclusions may be warranted: 1. The performance of GP concrete to FT cycling was observed higher compared to that of plain concrete
Summary
The phenomenon of temperature fluctuating in concrete structures above and below freezing of water is called freezethaw (FT) cycles. One cycle of FT causes a local damage in the concrete internal structure. More cycles of FT increase substantially the damage of concrete internal structure [1]. Hydraulic pressure is generated in the capillary pores of concrete as a result to the expansion of the frozen water. The hydraulic pressure causes damage in the surrounding cement paste matrix [2]. At a temperature below 0 oC, the gel water flow into the capillary pores to freeze there. The accumulation of ice in the capillary pores causes internal pressure on the cement paste matrix that leads to damage of concrete [3]
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