Search results

The result shows: the loose circle radius of this refuge chamber is about 1.7~2.0m；the surrounding rock of refuge room belongs to IV class with large loose circle, designs support parameters with anchor net spray built-up arch theory; the numerical analysis shows that the floor suffers from floor heave, so it needs to be set up with anti-arch structure and be filled with reinforcement material.
Due to serious deformation, the floor is equipped with anti-arch and reinforced with Ruichey Minova reinforcement material.
Meanwhile, both walls and the roof are filled with materials, which deform with the rock to guarantee the tightness in the chamber.
China Safety Science Journal, 2010, 20(4):155-158.
Journal of Liaoning Technical University (Natural Science), 2012, 31(2):189-192 [5] Oberhozer JW: Assessment of refuge bay designs in collieries [J].COL 115 SIMRAC Final Research Report, 1997, 1

A common example is conventional steel rebars which are a composite material consisting of a concrete matrix with embedded steel bars.
Roshan, The Indian Concrete Journal, 2004, page 19-30 [2] S.
Szerszen, ACI Structural Journal, Vol. 100, May-June, pp. 377-382, 2003
Allen, Building Research Note No. 85, Ottawa, Canada, Apr., 8 pp. (1972) [5] F Djavanroodi, A Salman, Materials Science and Engineering, Vol. 230 pp. 12002, 2017 [6] A.
Szerszen, ACI Structural Journal, Vol. 100, 377-382 (2003) [7] M Ebrahimi, Sh Attarilar, F Djavanroodi, C Gode, HS Kim, Mat. & Design., Vol. 63 pp. 531-537, 2014 [8] A Salman, F Djavanroodi, Materials Science and Engineering, Vol. 230 pp. 12015, 2018 [9] F Djavanroodi, A Pirgholi, E Derakhshani Materials and Manufacturing Processes 25 (8), 864-872 [10] W.

Materials and methods Analysis of test scheme The 20CrMnTi steel with sample diameter of 28mm forged by initial temperature of 1150℃ and final temperature of 900℃ is selected as experimental raw material.
References [1] YANG Hui, LI Zhenhong, ZHANG Zhiliang, Investigation on Zener-Hollomon parameter in the warm-hot deformation behavior of 20CrMnTi, Journal of Zhejiang University Science A. 7(2006) 1453-1460
[2] Yang Qingxiang, Ren Xuejun, Gao Yukui, et al, Effect of carburization on residual stress field of 20CrMnTi specimen and its numerical simulation, Materials Science and Engineering A. 392(2005) 240-247
Dybowski, Vacuum carburizing-process optimization, Journal of Materials Processing Technology. 164-165(2005) 876-881
[6] Shahin Ghafari, Hamidi Abdul Aziz, Mohamed Hasnain Isa, et al, Application of response surface methodology (RSM) to optimize coagulation-flocculation treatment of leachate using poly-aluminum chloride (PAC) and alum, Journal of Hazardous Materials. 163(2009) 650-656

Reflective properties Materials selected By film theoretical knowledge, in order to achieve high reflectance and higher laser damage threshold: (1) Generally, the materials with big difference in reflectance are chosen to decrease the number of the films and reduce production cost and preparation difficulty.(2)From the perspective of laser destruction to the films, membrane material should have high laser damage threshold.
High and low refractive index materials are deposited alternately in the depth of λ0/4, which constitutes the dielectric medium HR film system[4].
The film system Si/(LH)110(LH)24/Air is designed on ultra-smooth silicon substrate, with Si and SiO2 as high and low refractive index materials, by use of TFCALC3.4 film design software.
Acknowledgements This work was supported by National Natural Science Foundation Funded Project of China under grant No.60177037.
[J] Journal of Propulsion Technology. 2007 Vol.128 No15.

Experiment Materials.
ACI Materials Journal, 99 (4) (2002) 399-407
Materials and structure, 35 (2002) 579-582
Journal of Materials in Civil Engineering, ASCE, 2003, 15(2): 101-107
Materials and Structures, 1985, 18 (106): 285-290

., Manitowoc, WI, USA 2Atriax Materials LLC, 2010 Hwy 58 Bldg. 1036 Oak Ridge, TN 37831 adavid.weiss@eckindustries.com, bgmikeblack@comcast.net Keywords: Semi-solid processing, extrusion, nanocomposites Abstract The production of nano-reinforced aluminum alloys in volume and quality suitable for subsequent shape casting has been problematic.
Additional material was produced using the 555°C billet temperature for the second stage extrusion.
Unrefined alloy containing 1.0 wt.% SiC nanoparticles showed strength improvement as well, but less than conventionally refined material.
European Journal of Scientific Research, 63 No.2 (2011), 204-218 [3] D.
Journal of Materials Science Letters June 1988, Volume 7, Issue 6, pp 578-580 [5] S.

Biffar Dept. of Prosthetic Dentistry and Dental Materials, University Greifswald, Rotgerberstr. 8, D-17487 Greifswald, Germany, klinke@uni-greifswald.de Keywords: pfm-restorations, surface, roughness, low fusing ceramics, porcelains, sintering, dentistry Abstract.
Materials and Methods On the base of compositional and microstructure differences eight dental ceramic material were selected for the test: four high-melting ceramics (> 900 °C) and four low-melting ceramics (< 800 °C) (Tab. 1).
Dentine power of each ceramic material was mixed with distilled water.
The surface roughness and topography of the ceramic materials were evaluated by laser profilometry [7], using a confocal laser scanner profilemeter (Fa.
Wennerberg, On surface roughness and implant incorporation, PhD Thesis, Institute for Surgical Science, University of Göteborg, Göteborg, 1996.

Main material of model is Plexiglas plate.
The teaching team determined the dimension was 1800mm×1200mm×1500mm according to material size.
Material selection: After the design plan was finalized, the team made the sketched model The next step was the material selection.
Selecting the materials can fully demonstrate the morphology of the model itself.
The main materials were including: (1) Plate type : Plexiglas plates with thickness of 1mm, 3mm, 5mm, ABS plastic board, rigid foam plastic, etc.; (2) Accessories for PVC pipe with different specifications and the corresponding elbow, adjustable tee, valve; (3) Other materials: metal frame , pulling bar , springs, barbed wire, single-chip , LED lights and so on.

Traditional methods are not only time-consuming and expensive, but also dependent on testing materials and machines.
Acknowledgement This material is based in part upon work supported by Guangxi Key Lab of Road Structure and Materials.
Advanced Materials Research, v 724-725, p 1489-1494, 2013, Applied Energy Technology [4] Chuanhai Wu.
Journal of Engineering Mechanics, 2009. 135(4): p. 324-333
Journal of Computing in Civil Engineering, 2009. 23(6): p. 340-347.

Introduction Cement-based materials such as mortar and concrete are porous materials.
The pore space of cement-based materials depends on the water-cement ratio, the duration of hydration, the type of cement, the type and percentage of mineral admixtures and the aggregate concentration.
Test Material.
Weiss et al, The influence of accelerated curing on the properties used in the prediction of chloride ingress in concrete using a Nernst-Planck approach, Construction and Building Materials, 2014 66 752-759
[4] Wu Hai-jun and Chen Ai-rong, Study of Durability Design Method for Bridge Structures [J], China Journal of Highway and Transport, 2004 17(3) 57- 61