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Online since: May 2012
Authors: Hui Qin Chen, Xiu Fen Li
Some points needed to consider in Experimental design The index determination of Experimental study : In general, cement performance measurement projects includes many [1].For insoluble residue, ignition loss quantity, magnesium oxide, sulphur trioxide and alkali content, because such factors as the nanometer kaolin than kaolin, slant kaolin purity higher and kaolinite and partial kaolin can join in cement, such index comply with cement requirements.
Water requirement is likely the important indexes which affect Nano-kaolin mixed to cement, as Nano mineral has high specific surface, contrasting nano-silica cement test, this is the important reason to increase Water requirement.
The compressive flexural strength, the anti-permeability and corrosion resistance performance of coking properties and anti-freeze properties are important index in cement industry, hereinto, compressive strength, flexural strength is the most basic index, so this paper finally determined compressive flexural strength to arrange test, and anti-permeability, corrosion resistance, resistance to the carbonization and anti-freeze properties as a follow-up tests arrangement.
Finally, this paper finally determined water demand, setting time and flexural strength as the main factors.
Nano-Kaolin’s dispersibility: Nano-kaolin scattered to cement particles need to choose a good dispersion method to better improve the distributed quality and improve the mechanical properties of scattere system[2].Considering the nano kaolin in water have very good dispersion, water is the raw material to make cement colloid, and also in cement colloid and concrete preparation process use mechanical agitation,so this paper adopt a method combed physics and chemistry, is also a kind of simple easy to implement method: First, the nano-kaolin is scattered to the water, fully mixing make nano-kaolin dispersed in water even, and then in the cement colloid fabrication process, nano-kaolin is joined in cement with the water together, and extend the cement colloid mixing time, get a good dispersion effect, make the nano-kaolin maximum limit in cement fully scattered.
Online since: October 2012
Authors: Yulfian Aminanda, Kassim A. Abdullah, Jaffar S. Mohamed Ali
Mohamed Ali1,b and Yulfian Aminanda1,c Department of Mechanical Engineering, Kulliyyah of Engineering, International Islamic University Malaysia, P.O Box 10, 50728, Kuala Lumpur, Malaysia.
However, these properties are affected by many factors, such as; material type, cross section, shape, thickness, length, weight, etc.
In terms of geometry factors, square tubular structures are among the energy absorbing devices which can be used in many applications such as cars, ships, and aircrafts and so on.
The structural geometry of the specimen and the properties of the used material were the same for the two studies.
Online since: March 2017
Authors: Anthony N. Ede, Gideon Bamigboye, David O. Olukanni, Oluwole A. Olaniyi, Isaac I. Akinwumi
Many factors have to be considered before the final choice is made.
Of all these factors, safety remains the most fundamental because the loss of structural integrity could lead to structural failure and the consequent loss of lives, properties, investment and means of economic livelihood.
Based on these scenarios, this paper evaluates the economic and safety factors of steel reinforcing bars used in Nigeria.
The mechanical properties of steel reinforcement bars used in reinforced concrete structures and their cost implications for sustainable infrastructure delivery are assessed.
The tensile properties were limited to 12 mm and 16 mm of local and imported types.
Online since: February 2019
Authors: M.V. Absimetov, V.V. Voronov, E.S. Glagolev, M.Y. Elistratkin
Not possessing outstanding strength properties in a wide range of materials it has low density and thermal conductivity, good acoustic properties.
These factors eventually lead to additional costs for grinding organization and implementation compensation.
The switching from traditional cement to composite binders on its basis provides an opportunity to make the technology of obtaining porous material more stable, less dependent on various technological factors and external influences.
Nakano, Microstructural approach to properties of moist cellular concrete, Proceedings Autoclaved Aerated Concrete, Moisture and Properties.
Andrzej Cement-based composites: materials, mechanical properties and performance, CRC Press, 2005
Online since: July 2014
Authors: Lai Kuang Lin, Yi Min Xia, Fei He, Qing Song Mao, Kui Zhang
Yun Song[5] studied the influences of different factors on shields selection and summarized several methods of shields selection.
There is a certain corresponding relationship between geological properties and cutterhead types.
So a conclusion is drawn that geological parameters are the key factors for cutterhead type selection, as shown in Figure 3.
Geological parameters which determine geological properties are almost different under different geological conditions.
The nondeterminacy of shield manufacturers for considering economic factors and some random errors of samples also will affect the precision of neural network prediction.
Online since: October 2020
Authors: Michel Picanço Oliveira, Fabio da Costa Garcia Filho, Luiz Antonio Fonseca Peçanha Jr., Ana Lucia Diegues Skury, Luis Carlos da Silva, Sergio Neves Monteiro, Raphael Henrique Morais Reis
A brief review of the characteristics and properties of cubic boron nitride (cBN) is presented, including different processing methods.
The high diffusion of the liquid Al, as well as the reactions between the Al and the cBN are factors that promote a high sinterability of the cBN-Al system, causing an increase in its densification, as shown in Fig. 2[15].
If the increase of the relative amount of Al in the sintering properties such as conductivity and densification has a significant improvement, other properties such as hardness may suffer a decrease [9].
However, McKie et al [9] concluded that this Al did not affect fracture toughness results [9].
In another attempt to improve the properties of PcBN, Zhang et al [18]. sintered the cBN (70 wt.% to 90 wt.%) with Al and HfC 2:1, respectively.
Online since: October 2015
Authors: Shaharin Anwar Sulaiman, Wan Ahmad Kamil Wan Abdullah, Girma T. Chala, Azuraien Japper-Jaafar
Sulaiman1,b, Azuraien Japper-Jaafar1,c and Wan Ahmad Kamil Wan Abdullah2,d 1Department of Mechanical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia 2Department of Medical Physics and Radiography, Hospital Universiti Sains Malaysia, 16150 KubangKerian, Kelantan, Malaysia agirma_tade@yahoo.com, bshaharin@petronas.com.my, cazuraien_jappe@petronas.com.my, dwkamil@usm.my Keywords: Waxy crude oil, gas voids, cooling rates Abstract-When waxy crude oil becomes a gel, predicting a restart pressure in pipelines has been a challenge.
Misra et al.[1] identified factors affecting wax deposition in pipelines.
Norman et al. [7] highlighted the importance of analyzing the mechanical behavior of gelled crude oil prior to assessing the necessary pressure required for restarting the whole systems at offshore fields.
They stated that thermal shrinkage influenced the mechanical properties of gelled crude oil, which finally produces a reduced volume of the sample.
Brucy, "Waxy Crude Cold Start: Assessment Through Gel Structural Properties," presented at the SPE-49213, SPE Annual Technical Conference and Exhibition, New Orleans, Louisiana, 27-30 September, 1998
Online since: December 2014
Authors: Yan Chun Li, Yuan Yuan Xin
Many researchers have presented the mechanical properties of asphalt pavement on longitudinal slope.
Scholars also analyzed the mechanical response of asphalt pavement under moving load.
The slope of the flexure tensile strain is not affected, but in the common role of overloading the flexure tensile strain increased obviously.
Rutting Law and Its Influence Factors For asphalt Pavement in Long and Steep Longitudinal Slope Section, J.
Research on the Stress-strain Property of Asphalt Mixture Under Haversian Waveload, J.
Online since: March 2023
Authors: L. Natrayan, P.K. Dhal, P. V. Arul Kumar, G. Muthu, Gori Yatika, S. Kaliappan
Constraints of sand handling and processing factors 3.1.
Swapping out these materials with ones that will give the printed mould better environmental properties is necessary.
Investigation of process parameter effect on anisotropic properties of 3D printed sand molds.
Improvement on mechanical properties of submerged friction stir joining of dissimilar tailor welded aluminum blanks.
Binder jet 3D printing Process parameters, materials, properties, modeling, and challenges.
Online since: February 2012
Authors: Yan Ping Li, Zhong Jin Wang, Yi Li
The influence factors of thickness reduction are also investigated.
Its material properties are shown in Table 1.
The material property parameters are obtained by uniaxial tension tests.
Table 1 Material properties of 6k21-T4 aluminum alloy sheet Yield strength (MPa) Tensile strength (MPa) Elongation (%) K (MPa) n r0 r45 r90 118 220 28.0 424 0.22 0.78 0.61 0.66 Fig. 1 Flow stress vs. strain rate curve of the viscous medium Numerical procedure Finite element model.
So the BHP is the important parameter which affects the quality of stamped part.
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