Archive | 2019
Experimental Analysis on Refractory Properties of Tall Buildings
Abstract
Received: 18 January 2019 Accepted: 25 March 2019 High-strength concrete is commonly used in tall buildings. Due to the poor high-temperature resistance of concrete, the fire safety of tall buildings has always been a huge concern. The application of tall building refractories might slow down structural damage, reduce economic loss and protect personal safety. In this paper, the rock wool fibre was taken as an example of tall building refractories. On this basis, the author probed into the mechanical properties and damage evolution of the tall building refractory, and set up a meso-damage mechanics model for the material. The research results show that the rock wool fibre refractory (RWFR) witnessed a reduction in elastic modulus after being damaged under the growing stress; when the temperature was below 600 °C, the RWFR enjoyed good properties with only a slight decline in strength, which could satisfy the requirement on the bearing capacity; the results simulated by the constitutive model agree well with the test results. The research lays solid experimental and theoretical bases for the promotion of RWFR in tall buildings.