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30 paź 2016 · Results show that strength and failure modes are remarkably affected by water content and strain rate. Under water pressure, the strength of concrete increases nonlinearly as strain rate rises, and the strain rate sensitivity of concrete increases with increasing water content.
1 sty 2016 · In a hardened concrete, capillary water is the medium used by aggressive ions to penetrate concrete by percolation and osmotic pressure (differences in ionic concentrations). Some ions present in the interstitial solution of concrete can also be leached out by osmotic pressure.
15 sty 2014 · Joseph Lstiburek. January 15, 2014. Abstract. Air flow in buildings is one of the major factors that governs the interaction of the building structure with the mechanical system, climate and occupants.
1 lip 2011 · Not only are concrete’s strength and durability dependent on the amount of water in the fresh mixture (and the subsequent pore space in the hardened mass), but shrinkage is also proportional to water content, and workability is exponentially dependent on water.
28 sie 2022 · Starting from the internal water content of concrete, the existing research is combed, the influence of water content, water pressure, and loading rate on the static and dynamic characteristics of concrete in a water environment is summarized, and the influence mechanism is analyzed.
The average loss rate of strength and elastic modulus increased by 12.15% and 10.97%, respectively, when water pressure increased by 1 MPa. However, the loading process of water-confining pressure makes concrete more compact, where the static and dynamic mechanical performance can be improved.
10 lip 2023 · This book section aims to investigate the effects of water penetration on concrete strength and present an overview of the prevention methods that can be employed to mitigate these effects.
