Fire Resistance Behavior of Full-scale Self-thermal Insulation Sandwich Walls Made of Textilereinforced Concrete

2019 ◽  
Vol 37 (1) ◽  
pp. 239-248
Author(s):  
Linghua Shen ◽  
Jiyang Wang ◽  
Shilang Xu ◽  
Godwin Amoako-Atta
Keyword(s):  
Thermal Insulation ◽  
Fire Resistance ◽  
Full Scale

scholarly journals Fire Resistance of In-Plane Compressed Log-House Timber Walls with Partial Thermal Insulation

Buildings ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 131 ◽  
Author(s):  
Chiara Bedon ◽  
Massimo Fragiacomo
Keyword(s):  
Thermal Insulation ◽  
Fire Resistance ◽  
Careful Consideration ◽  
Full Scale ◽  
Cross Sectional ◽  
Standard Fire ◽  
Numerical Studies ◽  
Load Carrying ◽  
Current Design ◽  
Plane Compression

This paper presents the full-scale experimental assessment of a log-house timber wall with partial thermal insulation under in-plane compression and exposed to fire on one side. A key aspect of the current design application for log-house systems is represented by geometrical details, like cross-sectional properties of logs (typically characterised by high depth-to-width ratios) and outriggers. The latter provides restraint condition for the examined walls and hence markedly affects their overall load-carrying capacity. As a result, careful consideration should be given to the choice of these details, compared to fully monolithic timber walls (i.e., made from cross-laminated timber), due to the possible occurrence of local structural and/or thermo-mechanical mechanisms. This is the case of exceptional loading conditions like fire load, as the fire resistance of these systems could be affected by a multitude of variables, including the presence (even though limited to few surfaces only) of thermal insulation panels. To this aim, the results of a full-scale furnace test are discussed in the paper for a log-wall with partial thermal insulation, namely thermal insulation applied on the outriggers only, under the effects of EN/ISO standard fire conditions. The results of Finite Element (FE) numerical studies are also reported, to further explore the load-carrying performance of the reference log-house specimen and compare it with the experimental observations. Several thermal insulation configurations are finally numerically investigated, showing their effects on the overall fire resistance of the assembly. In accordance with literature, the test shows that the log house’s timber wall is suitable to obtain a fire resistance of about 60 min under relevant loading. The FE results are in rather close agreement with the temperature measurements within the section of logs, as well as a qualitative correlation with respect to the mechanical behaviour observed in the full-scale furnace experiment. The key role of outriggers and their thermo-mechanical boundaries, finally, is emphasised.

Experimental study on fire resistance of a full-scale composite floor assembly in a two-story steel framed building

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Lisa Choe ◽  
Selvarajah Ramesh ◽  
Xu Dai ◽  
Matthew Hoehler ◽  
Matthew Bundy
Keyword(s):  
Natural Gas ◽  
Fire Resistance ◽  
Full Scale ◽  
System Level ◽  
Compartment Fire ◽  
Content Type ◽  
Standard Fire ◽  
Fire Experiment ◽  
The Usa ◽  
Floor System

PurposeThe purpose of this paper is to report the first of four planned fire experiments on the 9.1 × 6.1 m steel composite floor assembly as part of the two-story steel framed building constructed at the National Fire Research Laboratory.Design/methodology/approachThe fire experiment was aimed to quantify the fire resistance and behavior of full-scale steel–concrete composite floor systems commonly built in the USA. The test floor assembly, designed and constructed for the 2-h fire resistance rating, was tested to failure under a natural gas fueled compartment fire and simultaneously applied mechanical loads.FindingsAlthough the protected steel beams and girders achieved matching or superior performance compared to the prescribed limits of temperatures and displacements used in standard fire testing, the composite slab developed a central breach approximately at a half of the specified rating period. A minimum area of the shrinkage reinforcement (60 mm2/m) currently permitted in the US construction practice may be insufficient to maintain structural integrity of a full-scale composite floor system under the 2-h standard fire exposure.Originality/valueThis work was the first-of-kind fire experiment conducted in the USA to study the full system-level structural performance of a composite floor system subjected to compartment fire using natural gas as fuel to mimic a standard fire environment.

Super strong, shear resistant, and highly elastic lamellar structured ceramic nanofibrous aerogels for thermal insulation

2021 ◽  
Author(s):  
Xin Zhang ◽  
Cheng Liu ◽  
Xinxin Zhang ◽  
Yang Si ◽  
Jianyong Yu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Insulation ◽  
Fire Resistance ◽  
Extreme Conditions ◽  
Advanced Ceramic ◽  
Strong Shear

Advanced ceramic aerogels with ultra-strong mechanical properties and excellent fire resistance are critically required as heat insulators under extreme conditions. Nevertheless, the current use of ceramic aerogels is usually restricted...

scholarly journals SANDWICH PANELS – BEHAVIOR IN FIRE BASED ON FIRE RESISTANCE TESTS

2016 ◽  
Author(s):  
Paweł Roszkowski ◽  
Paweł Sulik
Keyword(s):  
Thermal Insulation ◽  
Fire Resistance ◽  
Temperature Rise ◽  
Sandwich Panel ◽  
Sandwich Panels ◽  
And Behavior ◽  
In Fire ◽  
Resistance Tests ◽  
Building Elements

<p>Sandwich panel is the material that is easy and quickly to install. Basing on a great experience in the area of determination of the fire resistance class of construction building elements the authors describe the properties and behavior of building elements made of the sandwich panels exposed to fire. The article presents the results of fire resistance tests carried out in accordance with EN 1364-1 non-bearing walls made of sandwich panels with use of different cores.</p>The following parameters were analyzed: temperature rise on unexposed side (I – thermal insulation), integrity (E) depending on the orientations and on the width of the sandwich panels, deflection depending on the thickness of the boards. Conclusions were made on the base of the analysis from fire resistance tests.

scholarly journals Moisture performance of a new thermal insulation composite for interior application

2020 ◽  
Vol 172 ◽  
pp. 01001
Author(s):  
Carsten Rode ◽  
Naja Kastrup Friis ◽  
Christian Pedersen ◽  
Nickolaj Feldt Jensen
Keyword(s):  
Thermal Insulation ◽  
Field Test ◽  
Active Material ◽  
Field Tests ◽  
Full Scale ◽  
Small Samples ◽  
Brick Wall ◽  
Laboratory Setup ◽  
Mineral Fibre ◽  
Moisture Performance

The paper introduces prototypes of a new composite insulation product for interior application. The product consists of a standard mineral fibre insulation batt, which is wrapped in a combination of a thin fabric of moisture absorbing, capillary active material and vapour retarding membranes. The insulation composite has been tested with small samples in a laboratory setup and in an outdoor field test on a full-scale brick wall, and has so far shown promising results in comparison with other products. The paper describes the new insulation composite and the initial moisture tests that have been made with its constituents as well as results from the laboratory and field tests of its ability to prevent moisture accumulation.

Heat Transfer in Cone Calorimeter Tests of Generic Wall Assemblies

2013 ◽  
Author(s):  
Charles T. Aire ◽  
David A. Torvi ◽  
Elizabeth J. Weckman
Keyword(s):  
Heat Transfer ◽  
Fire Resistance ◽  
Fire Safety ◽  
Cone Calorimeter ◽  
Full Scale ◽  
Resistance Test ◽  
Double Layers ◽  
Gravimetric Analysis ◽  
Gypsum Board ◽  
Fire Resistance Test

It is critical for the construction industry to ensure that new building designs and materials, including wall and floor assemblies (e.g., a studded wall with insulation and drywall) provide an acceptable level of fire safety. A key fire safety requirement that is specified in building codes is the minimum fire resistance rating, which is a measure of the ability of an assembly to limit fire spread within a building. A manufacturer of building materials (e.g., insulation or drywall) is required to perform full-scale fire resistance furnace tests to determine the fire resistance ratings of assemblies that use their products. Fire resistance test facilities are very limited and these tests are very expensive to perform. Therefore, it can be difficult to properly assess the impact of changes to individual components on the overall fire performance of an assembly during the design process. As part of a project to develop methods of using small-scale fire test data to predict full-scale fire resistance test results, the heat transfer through scale models of common wall assembly designs was measured during cone calorimeter tests using an incident heat flux of 75 kW/m2. Wall assemblies consisting of single and double layers of 12.7 mm (1/2 in.) regular and lightweight gypsum board, and 15.9 mm (5/8 in.) type X gypsum board, along with mineral wool insulation and wood studs were tested. Temperature measurements made at various points within these assemblies are presented in this paper, and are discussed using results from thermal gravimetric analysis tests of the three types of gypsum board. Implications of this research to the development of heat transfer models and scaling relationships are also briefly discussed.

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