scholarly journals Modifying composition of plastering mortar for the purpose of enhancing fire resistance of building structures by means of silicate additives

2019 ◽  
Vol 97 ◽  
pp. 03014
Author(s):  
Nikita Levashov ◽  
Marina Akulova ◽  
Yulia Sokolova
Keyword(s):  
Thermal Properties ◽  
Fire Resistance ◽  
Water Glass ◽  
Setting Time ◽  
The Other ◽  
Mechanical And Thermal Properties ◽  
Building Structures ◽  
Mixing Ratio ◽  
Optimum Choice ◽  
Cement Binder

The present paper deals with modifying composition of plastering mortar for the purpose of enhancing fire resistance of building structures by means of silicate additives. Interaction of soluble water glass with cement binder elongates the initiation of setting time and reduces the time of final setting that could be explained by the opposed action of each component. One of the components facilitates the increase in the mobility of the mortar while the other, as opposed, is fastening rapidly. The optimum choice of the mixing ratio in the mortar would enhance both physical-mechanical and thermal properties.

Improvement of mechanical and thermal properties of hybrid composites through addition of halloysite nanoclay for light weight structural applications

2020 ◽  
pp. 152808372093662
Author(s):  
K C Nagaraja ◽  
S Rajanna ◽  
G S Prakash ◽  
G Rajeshkumar
Keyword(s):  
Thermal Properties ◽  
Composite Laminates ◽  
Morphological Analysis ◽  
Hybrid Composites ◽  
Mechanical And Thermal Properties ◽  
Light Weight ◽  
Building Structures ◽  
Suitable Alternative ◽  
Structural Applications ◽  
Infusion Technique

In this work the effect of stacking sequence of Carbon (C)/Glass (G) fibers and halloysites addition (1, 3 and 5 wt.%) on the mechanical and thermal properties of the hybrid composites were explored. The composite laminates were prepared by using Vacuum Assisted Resin Infusion Technique (VARIT). The outcomes disclosed that the hybrid composites having sequence of C2G3C2 (2-Carbon/3-Glass/2-Carbon layers) showed better overall properties. Moreover, the addition of halloysites enhanced the mechanical and thermal properties of the C2G3C2 hybrid composites. In particular, the hybrid composites added with 3 wt.% of halloysites showed higher overall properties among the other hybrid composites investigated. Finally, the morphological analysis was performed on the fractured surface of mechanical tested composites to study the failure mechanisms occurred. Based on the obtained results it can be concluded that the C2G3C2 hybrid composites added with 3 wt.% of halloysite could be a suitable alternative light weight material for automobile, aerospace and building structures.

Research of Thermal Stability and Fire-Resistance Properties of the Composite Material “Water Glass-Graphite Microparticles”

2017 ◽  
Vol 744 ◽  
pp. 27-31
Author(s):  
Anton Ustinov ◽  
Eugene Pitukhin ◽  
Alexander Pitukhin
Keyword(s):  
Thermal Stability ◽  
Composite Material ◽  
Fire Resistance ◽  
Water Glass ◽  
Protective Coatings ◽  
Fire Hazard ◽  
Quantitative Phase Analysis ◽  
Building Structures ◽  
Fire Resistance Test ◽  
Temperature Exposure

The properties of “water glass – graphite microparticles” composite material (CM) have been researched and qualitative and quantitative phase analysis of the CM structure has been done. Experimental samples of the CM with filler particles (graphite) and a few micrometers in size have been studied with X–ray diffraction and electron microscopy. Fire–resistance test of the composition has been conducted. Fire–resistance limit for the test samples of composite material is determined by the loss of its insulating ability (I). Fire–resistance limit I15 equal to 15 minutes has been obtained in accordance with the requirements of regulatory documents. It is shown that the research material is characterized by thermal stability and maintains its composition and structure under high temperature exposure. Composite material with the obtained characteristics can be used as protective coatings for building structures to increase fire resistance and reduce fire hazard.

Analysis of Structural Stability for H-Section Made of SM 400 According to Lengths and Boundary Conditions at High Temperatures

2014 ◽  
Vol 543-547 ◽  
pp. 3857-3860
Author(s):  
In Kyu Kwon
Keyword(s):  
Boundary Condition ◽  
Thermal Properties ◽  
Boundary Conditions ◽  
Fire Resistance ◽  
Mechanical And Thermal Properties ◽  
Structural Elements ◽  
Limited Size ◽  
Testing Facility ◽  
Main Factors ◽  
Proper Theory

A fire can cause serious damage to steel framed buildings so most of countries have fire regulations specifying fire resistance for structural elements. Fire resistance generally has been evaluated by a limited size testing facility. However, the size of columns and beams are different based on various conditions. Especially, the height of column and boundary condition are the main factors that govern the fire resistance of structural elements. To make a basic database for the H-section made of an ordinary grade structural steel, SM 400, an analysis was conducted by using mechanical and thermal properties with a proper theory. The fact findings suggested that the fire resistance for longer and fixed to fixed column were required a new guide line for covering of fire protective materials.

Effects of mixing ratio on the mechanical and thermal properties of polyelectrolyte complex film

2006 ◽  
Vol 14 (3) ◽  
pp. 267-271 ◽  
Author(s):  
Tae Won Son ◽  
Byung Giu Kim ◽  
Young Mi Park ◽  
Hak Sang Lim ◽  
Oh Kyung Kwon
Keyword(s):  
Thermal Properties ◽  
Polyelectrolyte Complex ◽  
Mechanical And Thermal Properties ◽  
Mixing Ratio ◽  
Complex Film

A Study on Comparison of Mechanical, Thermal Properties of High Strength Structural Steels at High Temperature

2014 ◽  
Vol 902 ◽  
pp. 3-6
Author(s):  
In Kyu Kwon
Keyword(s):  
Thermal Properties ◽  
High Temperature ◽  
Elevated Temperature ◽  
Fire Resistance ◽  
High Strength ◽  
Structural Steels ◽  
Mechanical And Thermal Properties ◽  
Protective Material ◽  
Eurocode 3 ◽  
Resistance Performance

As the strength of structural steels is increasing, the performance of fire resistance should be evaluated clearly and suggested. While their application has been expanded, the evaluation of the fire resistance is inclined to adopt that derived from ordinary strength steels. In order to compare the fire resistance performance of high strength structural steels at high temperature, databases such as mechanical and thermal properties at elevated temperature were compared with those of Eurocode 3. After comparison, it is recommended that the passive protective material is more needed than those for the ordinary strength structural steels to meet the fire resistance requirement.

Chemical Vapor Deposited β-SiC for Optics Applications

1994 ◽  
Vol 363 ◽  
Author(s):  
Jitendra S. Goela ◽  
Michael A. Pickering ◽  
Raymond L. Taylor
Keyword(s):  
Thermal Properties ◽  
Chemical Vapor ◽  
Low Pressure ◽  
The Other ◽  
Process Conditions ◽  
Mechanical And Thermal Properties ◽  
Microstructure And Properties ◽  
Chemical Vapor Deposited ◽  
Process Property

AbstractThe fabrication, properties and optics applications of transparent and opaque Chemical Vapor Deposited (CVD) β-SiC are reviewed. CVD-SiC is fabricated by the pyrolysis of methyltrichlorosilane, in excess H2, in a low-pressure CVD reactor. The CVD process has been successfully scaled to produce monolithic SiC parts of diameter up to 1.5 m and thickness 2.5 cm. The characterization of CVD-SiC for important physical, optical, mechanical and thermal properties indicate that it is a superior material for optics applications. CVD-SiC properties are compared with those of the other candidate mirror and window materials. SiC process/property relationships are discussed, emphasizing the differences in process conditions, microstructure, and properties between transparent and opaque CVD-SiC.

Facile preparation of a phenyl-reinforced flexible silica aerogel with excellent thermal stability and fire resistance

2021 ◽  
Author(s):  
Yu Zhang ◽  
Qianqian Shen ◽  
Xuesha Li ◽  
Lili Wang ◽  
Chaoyin Nie
Keyword(s):  
Thermal Stability ◽  
Thermal Properties ◽  
Fire Resistance ◽  
Silica Aerogel ◽  
Mechanical And Thermal Properties ◽  
Excellent Thermal Stability ◽  
Facile Preparation

A phenyl-reinforced flexible silica aerogel was synthesized using PTES as a reinforcer; the membrane-like structure derived from PTES improved the mechanical and thermal properties of the flexible silica aerogel.

scholarly journals Changes in the Textural Parameters of Fly Ash-Derived Na-P1 Zeolite During Compaction Processes

Mineralogia ◽  
2017 ◽  
Vol 48 (1-4) ◽  
pp. 3-22 ◽  
Author(s):  
Rafał Panek ◽  
Magdalena Wdowin ◽  
Lidia Bandura ◽  
Ewa Wisła-Walsh ◽  
Paweł Gara ◽  
...  
Keyword(s):  
Fly Ash ◽  
Water Glass ◽  
The Other ◽  
Compaction Process ◽  
Zeolitic Material ◽  
High Calcium ◽  
High Calcium Fly Ash ◽  
Cement Binder ◽  
Textural Parameters ◽  
Compaction Processes

Abstract This paper presents the possibility of receiving the granular forms of a zeolitic material of the Na-P1 type obtained from high-calcium fly ash in a semi-technical scale by means of three compacting techniques. The compaction process was carried out using cement, molasses and water glass as binders. Each of the proposed compacting methods affected the textural parameters of the obtained granular zeolite forms, as well as the binders used. In comparison to the other binders it was found that the cement binder had the smaller impact on the values of the textural parameters of the obtained compacted zeolite forms. The surface area for the zeolite Na-P1 was 98.49 m2·g-1, for the cement as a binder was 69.23 m2·g-1, for the molasses was 52.70 m2·g-1and for the water glass was 40.87 m2·g-1. For this reason, the briquetting and extruding tests were carried out using cement as a binder.

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