![]() Find a library where document is available.Desiccation tolerance is an ancient trait, lost from vegetative tissues following the appearance of tracheids but reappearing in several lineages when selection pressures favored its evolution. Concrete, whatever its type, remains a safe material, from a fire resistance point of view, when compared to other building materials. Desiccation of plants is often lethal but is tolerated by the majority of seeds and by vegetative tissues of only a small number of land plants. However, the fire resistance of HPC is not as good as that of ordinary concrete but not as bad as is sometimes written in a few pessimistic reports. Field experience in the North Sea and in Canada has shown that HPCs, when they are properly designed and cured, perform satisfactorily in very harsh environments. A fireproof safe that can withstand high heat for a prolonged time and protect in other situations is a must-have for your home’s security and peace of mind. However, self-desiccation can be very harmful if it is not controlled during the early phase of the development of hydration reaction, therefore, HPC must be cured quite differently from ordinary concrete. In high-performance concrete (HPC), the penetration of aggressive agents is quite difficult and only superficial. Of the five safes in this guide, Amsec and Gardall models give you true UL tested and certified 1-hour fire. The overall best fireproof wall safe on the market is the Amsec WFS149. High-performance concrete that have a water/binder ratio between 0.30 and 0.40 are usually more durable than ordinary concrete not only because they are less porous, but also because their capillary and pore networks are somewhat disconnected due to the development of self-desiccation. For this reason, fireproof is the same as fire-resistant or fire-rated when shopping for a fireproof safe. THE DURABILITY CHARACTERISTICS OF HIGH PERFORMANCE CONCRETE: A REVIEWĭurability problems of ordinary concrete can be associated with the severity of the environment and the use of inappropriate high water/binder ratios. Fire Resistant Instinct 30-Gun Fireproof Electronic Lock Gun Safe.
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