scholarly journals Effect of Fibre and Microsilica Incorporation on High Temperature Resistance of Cementitious Complex Binder

1970 ◽  
Vol 17 (1) ◽  
pp. 69-72
Author(s):  
Regina KALPOKAITĖ-DIČKUVIENĖ ◽  
Kristina BRINKIENĖ ◽  
Jūratė ČĖSNIENĖ ◽  
Algis MAKŠTYS
Keyword(s):  
High Temperature ◽  
Thermal Treatment ◽  
Mechanical Strength ◽  
Firing Temperature ◽  
Experimental Results ◽  
Thermal Shrinkage ◽  
Crushing Strength ◽  
Temperature Resistance ◽  
Cold Crushing Strength ◽  
Complex Binder

Complex binder reinforced with microfibre produced from waste catalyst was investigated. Influence of 1, 3 and 5 % of fibre as well as 5 % of microsilica on the mechanical strength of complex binder after thermal treatment at 600, 800 and 1000 °C temperature was analyzed. According to the experimental results reinforcement with 1 % of fibre had advantage on mechanical strength of complex binder up to 800 °C, meanwhile 5 % of fibre resulted in the lowest values of strength in all firing temperature range. The strength of dry samples was improved with microsilica incorporation. But above 800 °C temperature cold crushing strength as well as thermal shrinkage of binder reinforced with fibre and microsilica was lower in comparison with ordinary complex binder at 1000 °C.http://dx.doi.org/10.5755/j01.ms.17.1.253

Application of Fiber Produced by Plasma Spray Method in Cementitious Complex Binder

2010 ◽  
Vol 71 ◽  
pp. 133-137
Author(s):  
Regina Kalpokaite-Dickuviene ◽  
Kristina Brinkiene ◽  
Jurate Cesniene
Keyword(s):  
Mechanical Strength ◽  
Bulk Density ◽  
Plasma Spray ◽  
Firing Temperature ◽  
Annealing Temperature ◽  
Experimental Results ◽  
Spray Method ◽  
Complex Binder ◽  
Xrd Techniques ◽  
Recycled Waste

The effect of microfiber produced from recycled waste catalyst on microstructure and mechanical strength of cementitious complex binder was analysed. Complex binder reinforced with 1%, 3% and 5% fibers were exposed to 600, 800 and 1000°C for 3h. The influence of annealing temperature on morphology of fiber reinforced complex binder was analyzed applying SEM, XRD techniques. Experimental results showed that reinforcement with 1% of fiber had advantage on mechanical strength of complex binder up to 800°C. Meanwhile addition of 5% of fiber resulted in lowest values of strength and reduced bulk density of complex binder in all firing temperature range.

Thermo-Mechanical Properties of Geopolymer/Carbon Fiber/TiO2 Nanoparticles (NPs) Composite

2019 ◽  
Vol 967 ◽  
pp. 267-273
Author(s):  
Subaer ◽  
Abdul Haris ◽  
Noor Afifah Kharisma ◽  
Nur Akifah ◽  
Risna Zulwiyati
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Thermal Properties ◽  
High Temperature ◽  
Carbon Fiber ◽  
Carbon Fibers ◽  
Experimental Results ◽  
Temperature Resistance ◽  
Cleaning Agent ◽  
High Temperature Resistance

The main objective of this study is to investigate the thermo-mechanical properties of composite made from geopolymer/carbon fiber/TiO2 NPs. The composite was fabricated from geopolymer based on metakaolin added with carbon fibers as reinforcement and TiO2 NPs as self-cleaning agent. The thermal properties of the composite was examined by subjecting the samples to temperature up to 750OC for 4 hours. The mechanical properties of the resulting materials were measured by using flexural and tensile strength measurements. The experimental results showed that the compsite exhibited high temperature resistance and the addition of carbon fiber were increase the flexural as well as the tensile strength of the composite.

Preparation of the High Temperature Resisting Material with Al-CrO3 System by SHS

2013 ◽  
Vol 690-693 ◽  
pp. 334-337
Author(s):  
Yan Wang
Keyword(s):  
High Temperature ◽  
Heat Insulation ◽  
Sem Analysis ◽  
Orthogonal Test ◽  
Synthesis Process ◽  
Temperature Synthesis ◽  
Crushing Strength ◽  
High Temperature Synthesis ◽  
High Refractoriness ◽  
Cold Crushing Strength

SHS (Self-propagating High-temperature Synthesis) process is a new method to synthesis materials. The preparation of high temperature and resisting material with Al-CrO3 system was shown in this paper. According to the orthogonal test, a best sample was obtained with high refractoriness reaching 1800 °C and cold crushing strength 20MPa. The SEM analysis was used to analyze the microstructure of the product. The XRD was used to make sure the components of the product. The product has the characteristics of heat insulation, heat insulation and crush resistance, etc.

HIGH-TEMPERATURE, RESISTANT, ARGILLITE-BASED, ALKALI-ACTIVATED MATERIALS WITH IMPROVED POST-THERMAL TREATMENT MECHANICAL STRENGTH

2020 ◽  
Vol 68 (3) ◽  
pp. 211-219
Author(s):  
Tohoue Monique Tognonvi ◽  
Svetlana Petlitckaia ◽  
Ameni Gharzouni ◽  
Myriam Fricheteau ◽  
Nathalie Texier-Mandoki ◽  
...  
Keyword(s):  
High Temperature ◽  
Thermal Treatment ◽  
Mechanical Strength ◽  
Alkali Activated

Analysis of a ceramic/metal laminate under thermal shock

2001 ◽  
Vol 16 (3) ◽  
pp. 753-764 ◽  
Author(s):  
D. Sherman ◽  
D. Schlumm
Keyword(s):  
High Temperature ◽  
Mechanical Strength ◽  
Thermal Shock ◽  
Room Temperature ◽  
Shock Loading ◽  
Structural Integrity ◽  
Experimental Results ◽  
High Mechanical Strength ◽  
Thermal Residual Stresses ◽  
Multilayered Systems

A ceramic/metal laminated system has lately been proposed by the authors. It is capable of maintaining high mechanical strength and structural integrity after high-temperature thermal shock. In this investigation, a multilayered, multimaterial system with strong interface, subjected to thermal shock loading, was analyzed. The analysis was based on a 1-D finite difference scheme and considers the thermal residual stresses. Using a failure criterion based on crack initiation, the number of broken layers due to thermal shock and the residual mechanical strength at room temperature was determined. A comparison with experimental results of three different lay-ups was made, demonstrating the ability of the program to predict the experimental results. The program was thus shown to be a significant tool for designing multimaterial multilayered systems for thermal shock applications.

scholarly journals Effect investigation of the dispersion and type of fine-ground component, as well as the type of dispersing additives on the properties of low-cement periclase castable and samples from it

2018 ◽  
Vol 118 ◽  
pp. 69-86
Author(s):  
V. V. Primachenko ◽  
L. A. Babkina ◽  
I. V. Khonchik ◽  
L. N. Nikulina ◽  
T. G. Tishina ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
High Alumina ◽  
Technological Parameters ◽  
Grain Composition ◽  
Crushing Strength ◽  
Alumina Cement ◽  
High Alumina Cement ◽  
Cold Crushing Strength ◽  
The Impact ◽  
Sintered Periclase

Researches have been carried out, as well as technological parameters have been developed for obtaining of low-cement periclase castable and products from it based on sintered periclase, periclase scrap, high alumina cement and dispersing additives. The possibility of using as cement brand of “VGTS-73” of own production of JSC “URIR named after A. S. Berezhnoy”, as well as cement Gorkal-70 (Poland) is established. The dispersion of fine-ground component of charge (mainly periclase and in a small amount of high alumina cement) and the possibility of using Castament FS-10 + Castament FW-10 (Germany), SioxX-Mag (Norway) and Lithopix P 5 (Germany) are established. Castament FS-10 + FW-10 and SioxX-Mag are more effective in terms of obtaining periclase castable products with better service properties. The temperature of thermal treatment of unburned products (350 оC), the firing temperature of products (~ 1450 оC) and the possible application temperature of fired products (1580 оC and above) are established. The developed low-cement periclase castables and samples from them are characterized, depending on the used dispersing additives, by the following indicators of physicochemical properties: content, wt. %: MgO — 85—86, SiO2 — 2.0—6.0, CaO — 1.5—2.5, Fe2O3 — not more than 2.0; grain composition, mm — 6—0; open porosity of the samples after thermal treatment at temperatures of 350 and 1450 оC is 20.3—23.0 and 18.8—22.8 %, respectively; apparent density of the samples after thermal treatment at temperatures of 350 and 1450 оC is 2.63—2.69 and 2.74—2.86 g/cm3, respectively; cold crushing strength of the samples after thermal treatment at 350, 1450 and 1580 оC — 19—38, 31—65 and 29—72 N/mm2, respectively; refractoriness under a load of 0.2 N/mm2 of the samples after thermal treatment at 1450 оC is 1450—1470 оC. The developed low-cement periclase castables and products from them are recommended for service in the conditions, above all, the impact of basis slags. The manufacture of castables and products from them is mastered at the pilot production of JSC “URIR named after A. S. Berezhnoy”.

Ultra-low density three-dimensional nano-silicon carbide architecture with high temperature resistance and mechanical strength

Carbon ◽  
2020 ◽  
Vol 164 ◽  
pp. 143-149
Author(s):  
Amelia H.C. Hart ◽  
Peter Samora Owuor ◽  
John Hamel ◽  
Sanjit Bhowmik ◽  
S.A. Syed Asif ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
High Temperature ◽  
Mechanical Strength ◽  
Three Dimensional ◽  
Low Density ◽  
Temperature Resistance ◽  
High Temperature Resistance ◽  
Nano Silicon

scholarly journals Influence of type and amount of a quartz­containing additives on the properties of mullite­corundum concrete and samples from it

2019 ◽  
Vol 119 ◽  
pp. 42-52
Author(s):  
L. K. Savina ◽  
M. I. Ryschenko ◽  
L. A. Babkina ◽  
T. G. Tishina ◽  
L. M. Scherbak
Keyword(s):  
Thermal Treatment ◽  
High Alumina ◽  
Partial Replacement ◽  
Concrete Composition ◽  
Optimum Amount ◽  
Crushing Strength ◽  
Optimal Amount ◽  
Cold Crushing Strength ◽  
Before And After ◽  
Silica Addition

An influence of type and amount of a quartz­containing additive (silica fume and pulverized silica) on the properties of concrete and samples from it before and after thermal treatment was investigated. It has been established that, the partial replacement of expensive high­alumina cement in the concrete with the quartz­containing additive improves a flowability of concrete and provides an increase in the strength of concrete samples. Optimal was the addition of domestic pulverized sili-ca in an amount of 2 wt.  %. The compositions of mullite­corundum and mullite­siliceous mixtures with the pulverized silica addition in the optimal amount and a reduced content of high alumina cement (in comparison with the mullite­corundum concrete manufactured by JSC “URIR named after A. S. Berezhnoy”) have been developed. Concrete samples from mullite­corundum concrete of the developed composition with the pulverized silica addition were characterized by a higher cold crushing strength after 3 days of air hardening and thermal treatment at 110 and 1400  C (87 and 108 N/mm2, respectively) compared with samples from mullite­corundum concrete without the quartz­containing additive (52 and 70 N/mm2). Petrographic studies have established that, the introduction of quartz­containing additives in the optimum amount in the concrete composition contributes to better sintering of concrete. In the presence of quartz­containing additives in the binder mass of concrete samples, crystallization of mullite and calcium hexaaluminate was intensified, as well as anorthite formation. The production of mullite­corundum concrete with the quartz­containing additive (pulverized quartz) has been mastered at JSC “URIR named after A. S. Berezhnoy”.

Study of New Filters Properties for Cs-137 Vapour Capture at High Temperature

2010 ◽  
Vol 73 ◽  
pp. 171-175
Author(s):  
A.S. Aloy ◽  
A.V. Strelnikov
Keyword(s):  
High Temperature ◽  
Fly Ash ◽  
Thermal Treatment ◽  
Mechanical Strength ◽  
Aerodynamic Resistance ◽  
Test Facility ◽  
Lower Resistance

Major characteristics of two alumosilicate filters based on fly ash microspheres and porous chamotte were studied for high-temperature trapping of Cs-137 vapours. To determine aerodynamic resistance of the filters, a test facility was designed and built to determine the aerodynamic resistance of the filters. It was shown that porous chamotte had significantly lower resistance than that of the filter based on fly ash microspheres at linear airflows up to 15 cm/sec. Thermal treatment at 1400-15000С made it possible to increase mechanical strength of the filter based on porous chamotte factors of 1,5- 3,4, without any significant changes of other characteristics that exceeded similar parameters for the filter based on fly ash microspheres.

DMV 59

Alloy Digest ◽  
2009 ◽  
Vol 58 (8) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Mechanical Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Mechanical Strength ◽  
Temperature Performance

Abstract DMV 59 is the material of choice for a wide variety of applications where significant corrosion resistance and high mechanical strength is necessary. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: Ni-672. Producer or source: Mannesmann DMV Stainless USA Inc.

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