Search results

This article studied the influence of the caustic soda flakes (CSF) – phosphogypsum (Ard) activator on the properties and microstructure of hydration product generated by carbide slag(CS)-flyash(FA) system which used in high-grade highways pavement.
However, the pozzolanic reaction can occurs with the Ca (OH)2 in carbide slag to generate a stable calcium silicate hydrate and other hydration products at room temperature.Under curing for a time,the hydration products can achieve good mechanical properties and water stability.
In this paper,by study of the composition and properties of carbide slag-flyash system,found that the overall performance of the product can continue to improved, having the potential of used in high grade highway base.
Design of tests The main factors affecting the 7-day strength are the ratio of carbide slag to fly ash, the amount of activator and the ratio of caustic soda flakes to phosphogypsum.
The experimental design about the main factors are shown in the Table 1.

These parameters are known to be governed by several factors namely: cement ratio, aggregate type, density, moisture content, and porosity which are all affected when concrete elements are exposed to heat.
The results of the above NDT tests were compared after being converted into damage factors [46].
Barai, Thermal and mechanical properties of concrete and its constituents at elevated temperatures: A review, Constr.
Zhou, A review of mechanical properties of fibre reinforced concrete at elevated temperatures, Cem Concr Res. 135 (2020) 106117
Alyaseri, Effects of elevated temperatures on mechanical properties of reactive powder concrete elements, Constr.

Adhesion character of the coating system depends on various factors, for example, different in thermal expansion between coating and substrate, substrate fracture toughness, hardness, and diffusion capability etc.[3].
Table 2 Tribological properties.
This may be cuased by lower effect of the CTE mismatch of such system which became more crucial factor affecting film damage at high temperature.
Ma, Mechanical Properties of AlCrTiSiN Coatings Developed by Cathodic Arc for Protection Applications, Solid State Phenomena Vol. 185 (2012) 81-83
[7] Information on http://www.meadinfo.org/2010/03/s45c-jis-mechanical-properties.html

Test materials and test design In this study, 70# base asphalt is used, and the basic properties are shown in Table 1.
Basic properties of bitumen properties Penetration（25˚C，100g,5s /0.1mm ductility (15˚C)/cm Softening Point /˚C density(15˚C) g/ cm3 Specification 60～80 》100 46 Testing 74 110 46.0 1.032 Table2.
Basic properties of the four fibers properties density（g/cm3） Tensile strength（Mpa） Melting point（˚C） Elongation at break（%） Oil absorption rate（%） A Fiber 1.32 517 249 33 3.88 B Fiber 1.46 <300 >200 18 6.04 C Fiber 2.43 3000~4840 1450~1500 31 0.88 D Fiber 1.83 — — — 1.64 Table3.
According to the similar or different levels of development trend of different factors, this method could determine the main factors affecting the target value through calculating the relational degree between the target and the factors.The general procedure of the grey relational analysis is as follows[9]: (1) Specify the reference data column and define a set of discrete sequence: (1) (2) Where is sequence of parent-factors; is sequence of sub-factors
First, initialize the data in Table 4, then set differencing sequence based on various influencing factors.

The major shortcomings of those weight-saving materials are their poor mechanical properties and poor tribological performance, such as wear, friction and adhesion characteristics.
Model Description Model Description and Material Properties.
As for Al matrix, two stress intensity factors are calculated: one considers the crack length equals to the coating thickness while the radius of the Si particle is considered to be the crack length in the second scenario.
Regarding CrN, the stress intensity factors for different thicknesses fall just below the aluminum oxide as its fracture toughness is very close to that belongs to AL2O3 , and equal to 3.3 MPa√m [12].
He, Study on the structure and tribological properties of CrN coating by IBED, in: vol 131, Elsevier, Switzerland, 2000, pp. 391-394.

Antibacterial properties, surface area, and fiber crystalization were investigated.
The greater antibacterial properties were found at lower modified chitosan loading compared ZnO.
Chitosan is available in a wide range of molecular weights and degrees of deacetylation, which are the main factors affecting the particle size, particle formation and aggregation [3].
Modified chitosan and ZnO particle increased PP fiber antibacterial properties.
Antibacterial properties of antimicrobial-finished textile products.

Introduction Materials of an ultrafine-grained and nanometric structure exhibit mechanical properties that often surpass those of conventionally obtained materials having phases or grain structures on a micrometric scale.
Ultrafine-grained structures and nanostructures can be characterized as being unique owing to their physical and mechanical properties, such as: high low-temperature strength and/or high stress superplasticity and others [1, 3, 6, 7].
During applying high deformations, a strain anisotropy occurs in the material, which causes the anisotropy of mechanical properties.
Therefore, computation results are particularly affected by: the properties of material examined, friction conditions, and the kinetic and thermal parameters describing the plastic working process.
Kwapisz: The study of accumulation roll-bonding processes of aluminum and development of the model microstructure and mechanical properties, PhD dissertation, Czestochowa University of Technology, 2007 [4] M.

The weld width of laser welding not only affects the tailor welded blank forming properties, but also leads to fracture failure to a great extent during the stamping process.
In order to optimize the weld process and ensure laser welded tailored blanks (LWTBs) forming properties, the weld width should be predicted and controlled.
Ever since a long time ago, the optimization of metal laser welding process and controlling of weld width of various sheet are mainly determined by physical tests, which will cost a lot of manpower, material and time, in addition, the human factors in various control processes will more or less affect the accuracy of the optimization of laser welding process and control of weld width.
For choosing a specific width value ,the user may obtain the corresponding optimal model group of technological factors through reversing the optimal PLS prediction model group, which means that technology program of the minimum weld width of the tailor welded blank will appear.
First of all, the database module imports the T0, AC1 of B340/590DP steel, and other three relevant factors, the build-flow chart and steps of weld width prediction module are as the same as steps in the Third part.

The preparation technology and production process factors have been discussed in this work.
The swelling process is affected by swelling temperature, swelling time, ratio of modifier to sweller and some other factors.
During the breeding process, the main influence factors are the content and type of stabilizer, breeding temperature and time.
And their basic properties are listed in Table 1.
And their basic properties are listed in Table 2.

Occlusal adjustments such as grinding and polishing to eliminate occlusal or internal interferences can affect the mechanical properties of zirconia.
It has well aesthetics that look like natural teeth and good mechanical properties to withstand high occlusal stresses in posterior fixed prostheses.
Whereas there are some phase changes, the effect is slight on the mechanical properties of zirconia.
The effect of heat treatment and feldspathic glazing on some mechanical properties of zirconia.
Mechanical properties of zirconia after different surface treatments and repeated firings.