scholarly journals EXPERIMENTAL ASSESSMENT OF THE EFFECT OF PLASTICIZING AND AIR-ENTRAINING ADDITIVES ON MECHANICAL PROPERTIES OF REFRACTORY CEMENT COMPOSITE

2018 ◽  
Author(s):  
M. Jogl ◽  
P. Reiterman
Keyword(s):  
Mechanical Properties ◽  
Cement Composite ◽  
Experimental Assessment ◽  
Refractory Cement

scholarly journals APPLICABILITY OF CARBON FIBRES IN REFRACTORY CEMENT COMPOSITES

2018 ◽  
Vol 58 (6) ◽  
pp. 346-354
Author(s):  
Ondřej Holčapek ◽  
Pavel Reiterman ◽  
Petr Konvalinka
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
High Temperatures ◽  
Elevated Temperatures ◽  
Ceramic Powder ◽  
Cement Composite ◽  
Industrial Applications ◽  
Carbon Fibres ◽  
Refractory Cement ◽  
Temperature Levels

The main objective of this article is to present the influence of high temperatures on mechanical properties of advanced refractory cement composite reinforced with carbon fibres. The presented material is suitable for industrial applications and can withstand elevated temperatures up to 1000 °C. The action of high temperatures was investigated on two temperature levels 600 °C and 1000 °C and was compared to reference specimens dried at 105 °C. The carbon fibres with flexural strength of 4100MPa were applied in dosage 0.50 %, 0.75% and 1.00% of the total volume. The second investigated modification was mutual ratio between aluminous cement and fine ceramic powder. The influence of high temperatures was investigated by measuring the bulk density, compressive and flexural strength, dynamic modulus of elasticity and fracture energy; all measured on prismatic specimens 40 × 40 × 160 mm. The workability of fresh mixture was limited by the maximum dosage of carbon fibres in 1% of the total volume. Based on the workability and evaluation of residual mechanical properties after temperature loading, the best was found to be the combination of carbon fibres in dosage of 0.75% by volume.

Experimental Assessment of Mechanical Properties of Geo-grid Reinforced Material and Long-Term Performance of GT/HDPE Composite

2008 ◽  
Vol 17 (3) ◽  
pp. 247-258 ◽  
Author(s):  
Jung Min Seo ◽  
Kyung Ho Min ◽  
Beong Bok Hwang ◽  
In Chul Lee ◽  
Jayasekara Vishara Ruchiranga ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Experimental Assessment ◽  
Long Term Performance ◽  
Term Performance

Experimental Assessment of Roughness Changes in the Cutting Surface and Microhardness Changes of the Material S 355 J2 G3 after Being Cut by Non-Conventional Technologies

2011 ◽  
Vol 314-316 ◽  
pp. 1944-1947 ◽  
Author(s):  
Jozef Maščeník ◽  
Stefan Gaspar
Keyword(s):  
Mechanical Properties ◽  
Production Process ◽  
Laser Plasma ◽  
Manufacturing Process ◽  
Production Quality ◽  
Water Jet ◽  
Cutting Edge ◽  
Experimental Assessment ◽  
Cutting Surface ◽  
The Impact

Production of components, necessary for the construction of the machine resp. or device is a demanding manufacturing process. One of the possibilities of increasing efficiency and production quality is the introduction of unconventional technologies to the production process. Knowing the dependence of the impact of non-conventional technologies on the mechanical properties of products and their subsequent verification is an important aspect when designing and manufacturing them. The article deals with the impact of used unconventional technology, that means laser, plasma and water jet on the roughness of a cutting edge and microhardness of material S 355 J2 G3.

scholarly journals Influence of nanocellulose on the hydration process of Portland cement and concrete properties

2020 ◽  
Vol 17 (5) ◽  
pp. 155-160
Author(s):  
V. I. Khirkhasova ◽  
Keyword(s):  
Mechanical Properties ◽  
Portland Cement ◽  
Physical And Mechanical Properties ◽  
Cement Composite ◽  
High Density ◽  
Strength Characteristics ◽  
New Method ◽  
Concrete Properties ◽  
Hardening Process ◽  
Study Results

The paper deals with modification of cement composite and concrete with nanocellulose in low and high density. The author presents the study results of the influence of nanocellulose on the cement composite hardening process, as well as the physical and mechanical properties of heavy concrete. The influence of the used additive on the rheological and strength characteristics of concrete is revealed. A new method is proposed to improve the material performance.

scholarly journals Physical and Mechanical Properties of Wood-Cement Composite with Lignocellulosic Grading Waste Variation

2014 ◽  
Vol 4 (2) ◽  
pp. 69-72 ◽  
Author(s):  
Ronquim Renato Marini ◽  
Ferro Fabiane Salles ◽  
Icimoto Felipe Hideyoshi ◽  
Campos Cristiane Inácio ◽  
Bertolini Marília da Silva ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Cement Composite

scholarly journals Stimuli-responsive petroleum cement composite with giant expansion and enhanced mechanical properties

2020 ◽  
Vol 259 ◽  
pp. 119783 ◽  
Author(s):  
Jizhou Fan ◽  
Livio Yang Santos ◽  
Arash Dahi Taleghani ◽  
Guoqiang Li
Keyword(s):  
Mechanical Properties ◽  
Cement Composite ◽  
Stimuli Responsive

Mechanical properties and microstructure of a graphene oxide–cement composite

2015 ◽  
Vol 58 ◽  
pp. 140-147 ◽  
Author(s):  
Zhu Pan ◽  
Li He ◽  
Ling Qiu ◽  
Asghar Habibnejad Korayem ◽  
Gang Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Cement Composite

Reinforced Cement Composites – Effect of Hybrid Fibres on Selected Properties

2015 ◽  
Vol 824 ◽  
pp. 179-183
Author(s):  
Dana Koňáková ◽  
Eva Vejmelková
Keyword(s):  
Mechanical Properties ◽  
Thermal Loading ◽  
Bending Strength ◽  
Linear Thermal Expansion Coefficient ◽  
Linear Thermal Expansion ◽  
Cement Composite ◽  
Polypropylene Fibre ◽  
Cement Composites ◽  
Matrix Density ◽  
Reinforced Cement

In this article selected properties of a glass and polypropylene fibre reinforced cement composite materials are studied. They are determined either after preceding thermal treatment or during thermal loading. Basic physical properties (in concrete terms bulk density, matrix density and open porosity), mechanical properties (in concrete terms tensile strength and bending strength) are determined after subjecting the specimens to the pre-heating temperatures of 600°C, 800°C and 1000°C. The linear thermal expansion coefficient is measured directly as functions of temperature up to 1000°C. The critical temperature for the glass and polypropylene fibre reinforced cement composite when most properties are worsening in a significant way is found apparently 500°C.

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