Polypropylene Microfibers Against Explosive Spalling of Concrete. Strength Properties of Concrete with Fiber-Civil Engineering Research Journal-Juniper Publishers

JUNIPER PUBLISHERS-Civil Engineering Research Journal

Polypropylene Microfibers Against Explosive Spalling of Concrete. Strength Properties of Concrete with Fiber

Authored by Sergey Antonov*

Russian fire-safety legislation, applied to fire resistance of building constructions by loss of bearing capacity (R), seems unfinished contradictory (to other legislations) to many specialists. Nevertheless, ministry of construction in Russia considers that applied to fire resistance it is harmonized enough, the objects are specified and instruments of law enforcement exist (such as 384-FZ, 123-FZ, sets of rules and GOSTs – state standards). Firstly, Russian legislation makes no distinction between load-bearing and self-supporting constructions, whether they are under or over ground, made from concrete, wood or steel etc. Each one of them while being designed or exploited must have a proven fire resistance. It is mentioned in 384-Ф3 «Technical safety regulation for buildings and constructions» in clause 5: «1. Buildings and constructions’ safety, as well as related processes such as design, engineering, installation, adjustment, exploitation, utilization (demolition), is provided through the setting of meeting the safety requirements design values of parameters of buildings and constructions; qualitative characteristics during the whole life cycle of building/construction. Safety depends on implementation of specified values and characteristics during the building process, reconstruction, overhaul (hereinafter «building») and their further maintenance». And even if 384-FZ lacks some technical requirements, then according to this same standard, point 3.5 « Additional buildings’ safety requirements can be set by other technical regulations. However, they cannot contradict the requirements of the given federal law». (we will refer to this point later). Thus, while developing project decision, the constructor must be sure that fire resistance of the designed constructions complies with legislation. It’s his direct duty. Russian town-planning code № 190-FZ from 29.12.2004 has a mention in clause 48.

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