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Online since: August 2019
Authors: Mohd Mustafa Al Bakri Abdullah, Hussin Kamarudin, Ramasamy Shamala, Huang Yue, Wang Jin
There are certain factors that influence the properties of geopolymers such as composition, type and relative amount of alkali activator, NaOH concentration, specific surface composition of source materials, and condition during the initial period of the geopolymerization process.
Synthesis and mechanical properties of metakaolinite-based geopolymer.
Factor affecting early compressive strength of alkali activated fly ash (OPC-free) concrete.
Correlating mechanical and thermal properties of sodium silicate-fly ash geopolymers.
Effect of alkali concentration on mechanical properties of kaolin geopolymer.
Synthesis and mechanical properties of metakaolinite-based geopolymer.
Factor affecting early compressive strength of alkali activated fly ash (OPC-free) concrete.
Correlating mechanical and thermal properties of sodium silicate-fly ash geopolymers.
Effect of alkali concentration on mechanical properties of kaolin geopolymer.
Online since: March 2025
Authors: A. Kandasamy, B. Ramesh
The review also delves into the structural properties of these blocks, including their compressive strength, thermal insulation capabilities, and resistance to environmental factors such as moisture and temperature fluctuations.
The strength of these blocks is influenced by several factors, including the type of clay used, the concentration and type of alkaline activator, curing conditions, and the inclusion of any additives[22]. 3.1.1 Key Factors Affecting Mechanical Strength: i) Type of Clay: The composition of clay, particularly its aluminosilicate content, directly affects the geopolymerization process and the resulting mechanical strength of the blocks.
Key Durability Factors: 3.2.1.
The prices of alkaline activators can fluctuate based on market conditions and supply chain factors, which can affect the stability of production costs and pricing of the final product.
Shea, “Conditions affecting the moisture buffering measurement performed on compressed earth blocks,” Build.
The strength of these blocks is influenced by several factors, including the type of clay used, the concentration and type of alkaline activator, curing conditions, and the inclusion of any additives[22]. 3.1.1 Key Factors Affecting Mechanical Strength: i) Type of Clay: The composition of clay, particularly its aluminosilicate content, directly affects the geopolymerization process and the resulting mechanical strength of the blocks.
Key Durability Factors: 3.2.1.
The prices of alkaline activators can fluctuate based on market conditions and supply chain factors, which can affect the stability of production costs and pricing of the final product.
Shea, “Conditions affecting the moisture buffering measurement performed on compressed earth blocks,” Build.
Online since: June 2013
Authors: Hong Zhi Cui, Ting Peng, Wai Ching Tang, Shu Qing Yang
In this study, the cement pastes with different dosages of RLP on RA surface modification were used and the effects on the mechanical properties of the resulting concretes were studied.
The test results showed that the properties of recycled aggregates were not as good as those of natural aggregates, thus resulting in poorer mechanical properties of the recycled aggregate concrete.
This research provides some useful practical insights to improving mechanical properties of recycled aggregate concrete.
Experimental work Properties of recycled aggregates.
Among all, the porosity of aggregate is the most important factor.
The test results showed that the properties of recycled aggregates were not as good as those of natural aggregates, thus resulting in poorer mechanical properties of the recycled aggregate concrete.
This research provides some useful practical insights to improving mechanical properties of recycled aggregate concrete.
Experimental work Properties of recycled aggregates.
Among all, the porosity of aggregate is the most important factor.
Online since: June 2019
Authors: Yan Lei Xiu, Dietmar Koch, Yuan Shi
The influence of different numbers of coupons on the mechanical properties has been identified.
While the mechanical properties of different CMCs have been characterized and evaluated in a large number of studies, only few studies have been published discussing the statistical distribution of their properties.
[17] "DIN EN 658-1: Advanced technical ceramics - Mechanical properties of ceramic composites at room temperature - Part 1: Determination of tensile properties," 1999
[19] "DIN EN 658-2: Advanced technical ceramics - Mechanical properties of ceramic composites at room temperature - Part 2: Determination of compression properties," 2003
Salem, "Reliability and fracture statistics of highly vitrified ceramics: Effect of technical factors on strength distribution," Construction and Building Materials, vol. 101, pp. 1097-1104, 2015
While the mechanical properties of different CMCs have been characterized and evaluated in a large number of studies, only few studies have been published discussing the statistical distribution of their properties.
[17] "DIN EN 658-1: Advanced technical ceramics - Mechanical properties of ceramic composites at room temperature - Part 1: Determination of tensile properties," 1999
[19] "DIN EN 658-2: Advanced technical ceramics - Mechanical properties of ceramic composites at room temperature - Part 2: Determination of compression properties," 2003
Salem, "Reliability and fracture statistics of highly vitrified ceramics: Effect of technical factors on strength distribution," Construction and Building Materials, vol. 101, pp. 1097-1104, 2015
Online since: May 2015
Authors: Wen Dong Zhang, Nan Guo, Guo Jun Zhang
The test results prove that the vibration damping structure can effectively isolate the interference signal produced by working platform without affecting the sensitivity of hydrophone obviously.
1.
Rubber is widely used in many engineering fields to eliminate vibration and noise due to its integrated mechanical properties, which includes adjustable modulus, high intrinsic damping, excellent tolerance of large strain and carry capability under deformation.
Apart from affecting its mechanical properties, these intermolecular forces boost the aggregation of soft segments, and then micro-phase separation structure is produced.
By adjusting the ratio of rubber components and processing conditions, the soft bearing’s loss factor can be further increased to eliminate vibration noise without affecting the normal operation of hydrophone to extract useful signal.
Theory of Elastic Properties of Rubber, J.
Rubber is widely used in many engineering fields to eliminate vibration and noise due to its integrated mechanical properties, which includes adjustable modulus, high intrinsic damping, excellent tolerance of large strain and carry capability under deformation.
Apart from affecting its mechanical properties, these intermolecular forces boost the aggregation of soft segments, and then micro-phase separation structure is produced.
By adjusting the ratio of rubber components and processing conditions, the soft bearing’s loss factor can be further increased to eliminate vibration noise without affecting the normal operation of hydrophone to extract useful signal.
Theory of Elastic Properties of Rubber, J.
Online since: May 2018
Authors: Anna Trautvain, Andrey Akimov, Evgeniy A. Yakovlev, Valentina V. Yadykina
However, asphalt-concrete pavements, like any material, being exposed to weather-climatic factors and transport loads, are destroyed.
Physical and mechanical properties of asphalt concrete.
The covering of motor roads during their operation is mainly influenced by two groups of factors - weather, climate and mechanical factors, caused by loads from vehicles.
Under the influence of these two groups of factors, irreversible changes occur in the properties and structure of the asphalt concrete in the upper layer, which reduces its durability.
Zhukova, The influence of stabilizing additives on the physico-mechanical properties of stone mastic asphalt concrete, J.
Physical and mechanical properties of asphalt concrete.
The covering of motor roads during their operation is mainly influenced by two groups of factors - weather, climate and mechanical factors, caused by loads from vehicles.
Under the influence of these two groups of factors, irreversible changes occur in the properties and structure of the asphalt concrete in the upper layer, which reduces its durability.
Zhukova, The influence of stabilizing additives on the physico-mechanical properties of stone mastic asphalt concrete, J.
Online since: October 2010
Authors: Jalal El Yagoubi, Jacques Lamon, Jean Christophe Batsale
Multiscale modelling of the influence of damage on the thermal properties of ceramic matrix composites
Jalal El Yagoubi1,a, Jacques Lamon1,b Jean-Christophe Batsale2,c
1University of Bordeaux/CNRS – LCTS, France – 33600 Pessac
2ENSAM - TREFLE, France – 33405 Talence
a elyagoubi@lcts.u-bordeaux1.fr, b jacques.lamon@insa.fr,
c jean-christophe.batsale@bordeaux.ensam.fr
Keywords: CMC, Mechanical damage, Thermal properties, Interfacial properties, Thermography.
For this purpose, thermal management is a preponderant factor in material or structure design.
At larger scale, material characteristics are affected by damage: rigidity (mechanical effect) and thermal conductivity (thermal effect) decrease.
- Thus, the number of parameters required for modeling can be reduced, since the contribution of constituent properties to composite behavior can be well identified.
(Circles: experiment ; solid lines: simulation) (d) (c) (a) (b) Figure 5: Tensile stress-strain behavior (a), crack density (line) and Acoustic Emission data (circle) (b), and mechanical (c) and thermal properties (d) of Minicomposite M2.
For this purpose, thermal management is a preponderant factor in material or structure design.
At larger scale, material characteristics are affected by damage: rigidity (mechanical effect) and thermal conductivity (thermal effect) decrease.
- Thus, the number of parameters required for modeling can be reduced, since the contribution of constituent properties to composite behavior can be well identified.
(Circles: experiment ; solid lines: simulation) (d) (c) (a) (b) Figure 5: Tensile stress-strain behavior (a), crack density (line) and Acoustic Emission data (circle) (b), and mechanical (c) and thermal properties (d) of Minicomposite M2.
Online since: November 2015
Authors: Neel Kanth Grover, Amandeep Singh
The choice of electrode for SMAW lies on a number of factors, like weld material, welding directions and the preferred weld properties.
Electrode diameter has important effect on weld properties.
Type of polarity depends upon, requirement of weld properties, electrode material and base material.
[12] L. leinonen, Superior properties of ultra-fine-grained steels, Acta polytechical, 44 (2004)
Perez, Mechanical properties dependency of the pearlite content of ductile irons, Journal of achievements in Materials and Manufacturing Engineering, 33(2009) 150-158
Electrode diameter has important effect on weld properties.
Type of polarity depends upon, requirement of weld properties, electrode material and base material.
[12] L. leinonen, Superior properties of ultra-fine-grained steels, Acta polytechical, 44 (2004)
Perez, Mechanical properties dependency of the pearlite content of ductile irons, Journal of achievements in Materials and Manufacturing Engineering, 33(2009) 150-158
Online since: September 2008
Authors: Michael A. Capano, Kung Yen Lee, Wen Zhou Chen
The forward
characteristics, an ideality factor and a single barrier height of a SBD, remain the same after CMP,
so that CMP does not affect SBD characteristics.
Introduction Silicon carbide is a promising semiconductor material for high-power, high-temperature, and high-frequency operations because of its superior properties over silicon material.
Chemical-mechanical polishing is applied to smooth surface roughness in this work.
Forward current-voltage measurements are used to determine the ideality factor and Schottky barrier height.
Results and Discussion Ideality factors of different size SBDs, obtained from forward I-V measurements stays between 1.0 and 1.1 in spite of CMP treatment.
Introduction Silicon carbide is a promising semiconductor material for high-power, high-temperature, and high-frequency operations because of its superior properties over silicon material.
Chemical-mechanical polishing is applied to smooth surface roughness in this work.
Forward current-voltage measurements are used to determine the ideality factor and Schottky barrier height.
Results and Discussion Ideality factors of different size SBDs, obtained from forward I-V measurements stays between 1.0 and 1.1 in spite of CMP treatment.
Online since: October 2013
Authors: Cheng Zhong He, Wei Liang Chen
The results show that: the lifting process is an important factor affecting the structural vibration; Displacement peak and load duration time are inversely proportional; Increase the load duration time can reduce the vibration of the structure.
Xiao Bo(2010) pointed out that the swing load is an important factor of the dynamic characteristics [2].
He Cheng-Zhong (2010) in the paper pointed out that under portal crane with Self-Funnel unloading process, funnel had the dynamic load impact, the impact would bring crane structure vibration sharply, the crane stress response and displacement response would be peak, unloading process was also an important factor affecting the structural vibration [7].Structural vibration can destroy some sensitive components of the Gantry Crane, so the research of the dynamics analysis under lifting process has an important theoretical value and engineering application value.
(2)The lifting load is one of the main factors to affect the structure dynamic characteristics, the structure vibration is intense, the displacement changes particularly fast
Study on Dynamic Properties of The Conveyor & Grab Crane Under Offloading Load [D].
Xiao Bo(2010) pointed out that the swing load is an important factor of the dynamic characteristics [2].
He Cheng-Zhong (2010) in the paper pointed out that under portal crane with Self-Funnel unloading process, funnel had the dynamic load impact, the impact would bring crane structure vibration sharply, the crane stress response and displacement response would be peak, unloading process was also an important factor affecting the structural vibration [7].Structural vibration can destroy some sensitive components of the Gantry Crane, so the research of the dynamics analysis under lifting process has an important theoretical value and engineering application value.
(2)The lifting load is one of the main factors to affect the structure dynamic characteristics, the structure vibration is intense, the displacement changes particularly fast
Study on Dynamic Properties of The Conveyor & Grab Crane Under Offloading Load [D].