نتایج جستجو برای: fire resistant
تعداد نتایج: 234522 فیلتر نتایج به سال:
Passive fire protection is civil engineering discipline which very popular for research and development of new construction products test standards. The primary function passive product to achieve the declared resistance. Fire resistance a expressed as time interval (30 min, 60 90 120 min ...) in certain properties tested are preserved. In given intervals, it necessary maintain thermal insulati...
Building fires can lead to loss of human lives and economic damage, as well secondary damage due collapsing buildings. Consequently, fire resistance performance structural members has been garnering considerable interest in Korea. Fireproof structures are applied on the basis specification design. However, recent research results that focus application design have published through a project by...
The paper is devoted to the results of microscopic analysis structure fire-resistant materials developed on basis local mineral raw materials. authors point out that in this regard, a special place occupied by refractory materials, because use various radiation and designs microscopes from optical electronic requires preparation objects methods for deciphering observed images. Moreover, these r...
Background: Forest fires are considered integral parts of many forest ecosystems despite being a disaster influencing the ecosystem dynamics significantly. A fire that occurred within borders Düzce-Konuralp State Enterprise affected 16 ha oak forest. The present study aimed to investigate physiological and biochemical changes in two species (Quercus pubescens Q. cerris) at post-fire period. For...
In this study, the tannins extracted from Pinus radiata bark were used to develop an active–passive dual paint scheme with intumescent (IN) and fire-resistant (FR) behaviors. The properties of coating observed depend on concentration high-molecular-weight (H-MWT) incorporated into formulation. At high concentrations (13% w/w), exhibits fire-retardant due generation a carbonaceous layer; however...
Geopolymer is a relatively new substance that has sparked surge of research into nearly every field geopolymers in recent years. It's still on the verge becoming competitive OPC concrete alternative. Mechanical, hardness, and fire resistance properties geopolymer are exceptional. There been no/limited effect fiber integration concrete. In fire-exposed concrete, can help to resist spalling. The ...
The effect of microencapsulation dihydrogen ammonium phosphate (MAP) in the generation fire-resistant coatings was studied presence tannins extracted from Pinus radiata. MAP encapsulated to avoid interaction with sodium carbonate (Na2CO3), which, upon contact fire, generates unwanted gases. Thus, a fireproof (or intumescent) protective film produced tannins. Microcapsules were polymerized melam...
Background & Objectives: Educational and research laboratories in universities have a high risk of fire, because they have a variety of materials and equipment. The aim of this study was to provide a technical plan for safety improvement in educational and research laboratories of a university based on the design of automatic detection, alarm, and extinguishing systems . Method...
Forest fire models are generally used in different aspects of fire management and are helpful in understanding and prediction of fire behavior. Forest fires cause a significant damage for public property by destroying a large tract of forest. This helps fire fighters to focus on an area with greater risk and to develop better substructure for fire fighter training and ultimately to plan fire-f...
Building fire is one of the most frequent disasters. The mechanical properties concrete and steel will deteriorate to different degrees under exposure, thus weakening bearing capacity reinforced (RC) members. Therefore, it great theoretical practical significance carry out research on RC members subjected fire. To study residual shear post-fire beams indirect loading, static load tests were car...
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