scholarly journals Experimental Study of Straw-Based Eco-Panel Using a Small Ignition Initiator

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1344
Author(s):  
Linda Makovicka Osvaldova ◽  
Iveta Markova ◽  
Stanislav Jochim ◽  
Jan Bares
Keyword(s):  
Experimental Study ◽  
Mass Loss ◽  
Fire Resistance ◽  
Significant Influence ◽  
Flame Retardancy ◽  
Fire Tests ◽  
Secondary Product ◽  
Building Insulation ◽  
Natural Cellulose ◽  
Insulating Properties

Straw, a natural cellulose-based material, has become part of building elements. Eco-panels, compressed straw in a cardboard casing, is used as building insulation. Eco-panel is a secondary product with excellent insulating properties. If suitably fire-treated (insulation and covering), straw panels’ fire resistance may be increased. This contribution deals with monitoring the behavior of eco-panels exposed to a small ignition initiator (flame). The samples consisted of compressed straw boards coated with a 40 mm thick cardboard. Samples were exposed to a flame for 5 and 10 min. The influence of the selected factors (size of the board, orientation of flame with the sample) were compared on the basis of experimentally obtained data: mass loss. The results obtained do not show a statistically significant influence of the position of the sample and the initiating source (flame). The results presented in the article confirm the justifiability of fire tests. As the results of the experiments prove, the position of a small burner for igniting such material is also important. Such weakness of the material can also be eliminated by design solutions in the construction. The experiment on larger samples also confirmed the justifiability of fire tests along with the need for flame retardancy of such material for its safe application in construction.

scholarly journals FIRE RESISTANCE FOR THIN-WEBBED CONCRETE AND MASONRY ELEMENTS

2016 ◽  
Author(s):  
György L. Balázs ◽  
Éva Lublóy
Keyword(s):  
Experimental Study ◽  
High Temperatures ◽  
Fire Resistance ◽  
Material Composition ◽  
Structural Performance ◽  
Temperature History ◽  
Fire Tests ◽  
Structural Elements ◽  
Structural Behaviour ◽  
Simultaneous Application

<p>Deterioration of material characteristics and structural performance highly depends on constituents and temperature history. Material composition can also highly influence structural behaviour of elements. Thickness of web can be critical for high temperatures. The same situation is for interjoist elements (concrete or brick) between precast roof girders.</p>First part of our study was to improve fire resistance by structural elements with a typical thin web. Our experimental study included fire tests on various concrete mixes and fire tests of the girder with simultaneous application of load. Second part of our study was to summarize the result of real fire cases for girder-slab systems with concrete or brick interjoists.

Experimental Study on Fire Resistance Properties of Post-Installed Rebar Connection

2013 ◽  
Vol 671-674 ◽  
pp. 1877-1882 ◽  
Author(s):  
Xin Wang ◽  
Chang Jiu Jiang ◽  
Kao Zhong Zhao ◽  
Xiang Rui Chen
Keyword(s):  
Experimental Study ◽  
Fire Resistance ◽  
Great Influence ◽  
Fire Tests ◽  
Test Results ◽  
Whole Process ◽  
Fire Endurance ◽  
Organic Adhesive

A serial of fire tests have been conducted to study the fire resistance of the post-installed rebar connection with organic adhesive. Research variables include three kinds of anchorage depth. Loads are applied to specimens through lever and remain a constant throughout the whole process of the tests. The temperatures of connections are elevated following the ISO834 curve and the failure is controlled by excessive deflection of bonded-in rebar beams. The test results show that anchorage depth has a great influence on the performance of bonded-in rebar beams exposed to fire. Beams using organic adhesive fail suddenly with obvious rebar slip, and behave with poor fire endurance.

Experimental Study on the Optimal Thickness of Infiltration Media of the CRI System

2011 ◽  
Vol 415-417 ◽  
pp. 1703-1707
Author(s):  
Jun Min Chen ◽  
Xiao Lin Yao
Keyword(s):  
Experimental Study ◽  
Removal Efficiency ◽  
Significant Influence ◽  
Soil Column ◽  
Experimental Results ◽  
Artificial Soil ◽  
Optimal Thickness ◽  
Effluent Quality ◽  
Anaerobic Zone

Abstract. In order to investigate the optimal thickness of infiltration media in the Constructed Rapid Infiltration System, the artificial soil column is used to simulate the Constructed Rapid Infiltration System, and the CODCr, NH3-N and TN concentrations of the effluent from all the sampling sites are monitored. The experimental results and analysis show that the thickness of infiltration media exerts a significant influence on the CODCr, NH3-N and TN concentration and removal efficiency of the effluent; the CODCr, NH3-N and TN are mainly removed in the 0-1800mm zone of the artificial soil column; the total CODCr removal efficiency increases, as the thickness of infiltration media increases, but the CODCr removal efficiency in the 1800-2200mm zone is very low; the NH3-N and TN removal efficiency reaches the maximum where the thickness of infiltration media is 1800mm; the NH3-N and TN concentration of the effluent from 1800-2200mm zone dose not decrease, but increase 5-8%, due to the assimilation denitrification and amemoniation reaction on the end of the anaerobic zone; in consideration of the effluent quality, efficient biodegradation zone, construction investment, etc. the optimal thickness of infiltration media in CRI system should be 1800mm.

Experimental study and prediction using ANN on mass loss of hybrid composites

2012 ◽  
Vol 64 (3) ◽  
pp. 138-146 ◽  
Author(s):  
C. Velmurugan ◽  
R. Subramanian ◽  
S. Thirugnanam ◽  
B. Anandavel
Keyword(s):  
Experimental Study ◽  
Mass Loss ◽  
Hybrid Composites

Study on the Data-Bases for Fire Engineering Design of Structural Steels Members

2012 ◽  
Vol 628 ◽  
pp. 156-160
Author(s):  
In Kyu Kwon ◽  
Hyung Jun Kim ◽  
Heung Youl Kim ◽  
Bum Yean Cho ◽  
Kyung Suk Cho
Keyword(s):  
Bearing Capacity ◽  
Fire Resistance ◽  
Engineering Method ◽  
Fire Tests ◽  
Structural Members ◽  
Data Bases ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
In Fire ◽  
Resistance Performance

Structural steel has been used since the early 1970’s in Korea as primary structural members such as columns, beams, and trusses. The materials have much higher strength such as fast construction, high load bearing capacity, high construction quality but those have a fatal weakness as well. Load-bearing capacity is going down when the structural members are contained in fire condition. Therefore, to protect the structural members made of steels from the heat energy the fire resistance performance required. Generally, the fire resistance performance have evaluated from the exact fire tests in fire furnaces. But the evaluation method takes much more time and higher expenses so, the engineering method requires. The engineering method not only adopts a science but also an engineering experience. In this paper, to make various data-bases for evaluation of structural members such as columns(H-section, RHS), beams, loaded fire tests were conducted and derived not only each limiting temperature but also fire resistance respectively.

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