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Online since: August 2013
Authors: Jian Pan, Xiao Yong Ding
Fig.3 The planar graph of foundation pit excavation Fig.4 Schematic of steel pile soil nails hanging net Construction monitoring and management Due to complexity of the engineering geological conditions and hydrological condition and some uncertainties factors, design exist the probability of failure.
Reliability analysis of excavation slope Under the influence of the long and complex geological processes and human activities, the engineering properties of pit showed a greater spatial variability, so a single safety factor is not completely precise characterize the safety degree of works.
The physical and mechanical indexes of pit in the excavating range show in Table 2.
Table2, The soil physical and mechanical parameters of slope .
Factors of safety and reliability in geotechnical engineering.
Online since: December 2025
Authors: Amara Loulizi, Atef Daoud, Jihen Mallek, Othman Omikrine-Metalssi
The measured ultimate loads exceeded the theoretical values by factors of 1.2 and 1.1 for the SCC and SCRC10 beams, respectively, with probabilities of 0.14 and 0.11 that the measured loads would fall below the theoretical predictions, assuming a normal distribution.
Replacing natural aggregates with rubber produces both positive and negative effects on concrete properties.
Physico-chemical properties of the superplasticizer.
Table 9 summarizes three key properties derived from the force–deflection curves of all tested beams.
[27] AFNOR, NF EN ISO 179, Plastics - Determination of Charpy impact properties - Part 1: non-instrumented impact test.
Online since: July 2017
Authors: Elly Tjahjono, Ayudia M. Fani, Dodorus D. Dodi, Erinda P. Purnamasari, Feny A. Silaban, Essy Arijoeni
Silaban1,e, and Essy Arijoeni1,f 1Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia aemail: elly@eng.ui.ac.id; bemail: ayudiamutiara@gmail.com; cemail: dodiway13@gmail.com; demail: erindappurnamasari@gmail.com; eemail: fenyacelia@gmail.com; femail: essy@eng.ui.ac.id Keywords: lightweight concrete, oil palm shell, mechanical properties, compressive strength, flexural strength Abstract.
The physical properties of the river sand are given in Table II.
The physical properties of the OPS aggregate are given in Table II.
Here's a concrete mix proportions in the study using cement water factor of 0.3.
The Mechanical Behavior of Recycled Aggregate Concrete : Material-Structural Aspect.
Online since: August 2022
Authors: Abdus Samad Mahmud, Muhammad Fauzinizam Razali, Nur Ainul Nurina Ishak Latiffi
Since wire force is affected by bracket friction, adjusting the bracket width can help minimise wire curvature during bending, lowering sliding resistance.
The bracket was modelled with a bilinear rigid quadrilateral element (R3D4) and given the rigid non-deformable body property.
Cheng, Comparison of factors affecting orthodontic treatment motivation of Taiwanese and Thai patients in two hospitals, J.
Radzi, Mechanical and surface properties of initial and working aesthetic orthodontic archwires, Ann.
Paulose, Comparison of load deflection properties and force level of newly introduced M5 thermal copper NiTi with other orthodontic NiTi wires: an in vitro study, Procedia Comput.
Online since: March 2008
Authors: Leonid Bogomolov, Alexander Zakupin
The work is devoted to the problem of role of ambient factors (external electromagnetic field, in particular) in the process of ageing of mechanically burden nonmetallic solids (rocks).
We tested a number of specimens, made of materials with different elastic and piezoelectric properties: granodiorite, quartzite, granite, halite, and zirconium oxide ceramic.
Besides, we remark that the effects of weak external factors cannot be studied on a usual hydraulic press because its drive produces a host of noise inevitably.
Other sources were used to reveal the significance of such factors as voltage amplitude, rate of pulse rise, and pulses repetition rate for AE activation considered.
A suggestion that EM pulses affect the softened domains on the background of quasi uniform distributed mechanical stress could explain the low value of EUT in comparison with trial loading.
Online since: April 2021
Authors: Elia Mercedes Alonso Guzmán, Arturo Zalapa-Damian, Francisco Javier Domínguez-Mota, José Alberto Guzmán-Torres
It is known that several additions can improve concrete mechanical properties and durability [10].
These correlations help to understand the data, as they indicate how a variable is affecting the other.
The accuracy depends on several factors.
Influence of recycled aggregates on mechanical properties of hs/hpc.
Waste and recycled materials and their impact on the mechanical properties of construction composite materials.
Online since: January 2010
Authors: Yin Ma, Qing Shan Li, You Bo Di, Min Zhang
Take a little more, died it at the 100 °C, 30 minutes drying is necessary. 2.3 Sample Detection The use of high-resolution scanning electron microscope can observe superfine wool surface structure along with functional materials superfine wool in the distribution of the surface; The use of Fourier transform infrared / Raman spectrometer infrared absorption spectrometry; The use of lasers for the fineness of superfine wool fineness change detection; Test according to the state's wool textile products for Quality Supervision and Inspection Center (GB - T4711-1984) and ITS testing standards for mechanical properties testing; Test according to the Chinese Academy of Sciences Institute of Physical and Chemical Technology Center of antibacterial materials testing standards antibacterial performance testing. 3 Results and Discussion 3.1 Treated Superfine Wool Fineness Changes Fineness is the most important factor affecting superfine wool price.
CMC structures exist between cells in wool, and they are distributed in a network in the entire structure which function as a bridge connecting these wool cells, thus play a vital role in the mechanical properties of wool [8] .
So from a picture perspective the thickness and density are reduced, and characterization of structural changes could lead to friction characteristics' change, resulting in the effect of preventing shrink; thus reducing fabric slip in the fiber, and the anti-pilling properties will increase as well.
These properties enabled the wool fiber to take on the characteristics of cashmere and made a new breakthrough in the application of personal wearing.
Combining the two, fiber antibacterial properties will be greatly improved.
Online since: December 2014
Authors: Vinod Kumar Venkiteswaran, Syaida Hazira Ramli, Vijay R. Raghavan
Depending on the operating conditions and properties of the solid phase, various flow regimes can be observed in bed.
The fully developed friction factors were computed and correlated as a function of channel aspect ratio.
Experiments were reported on bed-to-wall heat transfer, particle motion and effects of particle properties [9, 10, and 11].
Comparing the factors affecting the flow, the cross section area is more dominant than the path length.
Kingman, The relationship between particle properties and fluidizing velocity during fluidized bed heat transfer. 
Online since: January 2021
Authors: Dena Bataev, Said Alvi Murtazaev, Magomed Nakhaev, Bakhytzhan Sarsenbayev, Madina Salamanova
Mineral powders, which have a certain proportion of aluminosilicate component, exhibit better astringent properties.
Marl in natural form, volcanic tuff, dune sands can be considered the most promising additives for improving the properties of cement paste, but undoubtedly, the decisive factor for assessing the effectiveness of the systems under study will be the activity of binders of multicomponent bonds.
This will slow down the beginning of setting of astringent ligaments and improve their properties.
It is quite possible that this will have a positive effect on the properties.
Muraviov, Mechanical properties of fiber-reinforced concrete using composite binders.
Online since: June 2014
Authors: A.R. Mohamed, Mohd Bin Sulaiman Hafis, Mohd Jamir Mohd Ridzuan, R.N. Farahana
The lubricant properties of PO and PPF oil were shown in Table 1.
Table 1: Lubricant properties of test lubricant.
Properties PO PPF LV Density, ρ (g/cm3) 0.873 0.730 0.772 Kinematic viscosity, μk @ 40 °C (mPa.s) 38.9 3.491 1.305 Table 2: Material properties of aluminium A1100 and steel SKD11.
The aluminium strip was heated for 3 hours at 350 °C to adjust the chemical composition, annihilate rolling texture and establish a recrystallised structure with isotropic mechanical properties.
It was found that the stresses on the strip surfaces led to the findings that the most influencing friction coefficient factors are sliding velocity, lubrication conditions, and contact pressure [8].
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