Fireproof Performance of Foam Concrete Insulation Board

Abstract

Foam concrete is used in building energy-saving insulation works, to study its fire performance is very important for further enhancing the fire performance of buildings. Under simulated fire conditions, by determining the compressive strength of foam concrete at different densities, different calcination time and different water content, this experiment studies the effect of these conditions on the fire performance of foam concrete. The results show that in case of fire, the compressive strength loss rate of foam concrete increases with the decreasing of density; to calcine the foam concrete standard specimens whose density are 300kg/m3 and 800kg/m3, their strength loss rates are 66.3% and 25.5%, the compressive strength of foam concrete in the same density increases with the calcination time decreasing, water content has different effects on different densities of foam concrete in the fire security. The foam concrete is non-flammable, but its compressive strength decreases due to the fire of combustible materials and high-temperature calcination.

Triaxial Failure Behavior of Highly Porous Cementitious Foams Used as Heat Insulation

“…In this sense, foam concrete made of cement paste (or mortar), in which a very high number of air voids are entrapped by using a suitable foaming agent, could be an advantageous solution for building insulation systems. Cementitious foams are nonflammable [22,23] and possess a high flowability (suitable for 3D printing), very low specific weight, no aggregates, and excellent thermal insulation properties [24]. On the basis of a rational mix design of foam and binder paste, a wide range of densities can be achieved (90-2000 kg/m 3 ) and different porous distributions can be sharpened.…”

Study on Bearing Dynamic Properties of Nano-Particle Reinforced ZA27 Alloy Composite Material

“…So, if improved high natural frequency can be proportional to change the system free vibration. Under normal circumstances, improving natural frequency of the weaknesses of whole system can improve the vibration resistance of system [3]. As can be seen from table 1, the bearing bush of particle reinforced ZA27 alloy composite materials has higher natural frequency than the bearing bush of ZQSn6-6-3 alloy.…”