Accelerated Moisture Transport through Local Weakness of High-Strength Concrete Exposed to High Temperature

Spilling out of condensed liquid water from needle-like holes in high-strength concrete was experimentally observed under fire attack. The presence these found to prevent explosive spalling effectively the vicinity during exposure tests. This spilling occurred at about 10 30 minutes after start high temperature heating. These are defined herein as local weaknesses that may act rapid paths permeation reduce risk cover concrete. phase change moisture CSH solids well free micro-pores simulated by a multi-phase chemo-physics analysis ultra-high-strength prediction high-rate phenomena proved using embedded sensor, and discharge though analytically simulated.