Search results

Its engineering properties, established its suitability as a construction material since prehistoric times.
Methods and Materials Samples.
Finally, material failure was recorded for sample S5 which showed the highest degree of bio-deterioration.
J.S Cruz, Structural analysis of two King-post timber trusses: Non- destructive evaluation and load- carrying test, Construction and Building Materials 24 (2010) 371- 383
Greenspan, Humidity fixed points of binary saturated aqueous solutions, Journal of research of the National Bureau of Standards, Physics and Chemistry Vol. 81 A, No. 1, (1977)

Study of PT/P(VDF-TrFE) pyroelectric sensor based on porous SiO2 substrate[J](in Chinese),J. of functional materials and devices,1998, 4(1):19-23 [5] Kim W S, Yoon K H, Kim E S.
Japanese Journal of Applied Physics, 2000, 39: 5650-5653 [6] Zeng Ling-Ke, Cao Jian-Xin, Wang Hui, et al.
Nano-porous silica films prepared by sol-gel granular silica Sol [J](in Chinese), Electronic components & materials, 2005, 24(2):32-37 [9] WU Zhao-feng, WU Guang-ming, YAO Lan-fang, et al.
Preparation and Study of Low Dielectric Constant Mesoporous Silica Films [J](in Chinese), J. of materials science and engineering, 2005,23(3): 408-411
Preparation and investigation of GOI material by using smart- cut technology[J](in Chinese), J. of functional materials and devices, 2007,13(3): 207-212.

Mining activities led to the deposition of mine waste, which was not contaminated with trace elements, was rich in carbonates and clay fraction, and was an even better parent rock than local sandy materials [17].
This situation, according to rough estimates by the National Academy of Agrarian Sciences of Ukraine (NAAS), leads to losses of about UAH 40 billion per year (as of 2019) [23].
Morel, Pedogenetic trends in soils formed in technogenic parent materials, Soil Sci. 180 (4–5) (2015) 182-192. https://doi.org/10.1097/SS.0000000000000135
Kučera, Rough wave-like heaped overburden promotes establishment of woody vegetation while leveling promotes grasses during unassisted post mining site development, Journal of Environmental Management. 205 (2018) 50-58. https://doi.org/10.1016/j.jenvman.2017.09.065
Beregniak, Peculiarities of the primary process of the soil formation on the mine rock dumps under the influence of biotic factors, Journal of Ecological Engineering. 23 (11) (2022) 101-108. https://doi.org/10.12911/22998993/153399

Initially a great deal of raw materials and workforce was used.
This type of cooperation delivers new production materials and innovative solutions to almost every sector of the economy.
With regard to materials use, minimalism is applied, i. e. as small as possible consumption of materials with the simultaneous reaching high effectiveness of using and functionality.
A characteristic feature is also a high degree of processing of materials used during production process.
[11] Report – Science in Poland, Ministry of Science and Higher Education, Warsaw 2013

A substance flow model for the year 2006 indicating the net flows of iron ore, crude and finished steel products across Europe demonstrates that these flows of materials is not environmentally sustainable, and the iron and steel sector do pose a threat to sustainable development [7].
Risk Factors Analysis Material Flow Risks.
Material is very important to every physical producer, especially to steel makers in China since enormous iron ore and auxiliary material are consumed to produce steel.
Acknowledgements The financial support of Scientific Research Foundation for Doctors of Jiangxi University of Science and Technology are gratefully acknowledged.
International Journal of Industrial Ergonomics, Vol.37 (2007), P.553-561

Finallly, the steel materials were dipped after cooled to a certain temperature under the atmosphere isolated from the air.
In this method, the steel materials was degreased through electrochemical method and designed on the annealed hot-dip galvanizing line.
Summary With the progress of science and technology and the development of economy, hot-dig galvanizing technology will be widely used in the protection of various steel materials.
Materials Science and Technology,2008,16(1):99-102
Journal of Central South University, 2010, 41(3): 930-935

In recent years, the functions of synthetic fiber as a reinforcing material of concrete has gradually been recognized, i.e. the main contribution of low dosage synthetic fiber to the improvement of comprehensive performance of concrete is anti-cracking and toughening rather than reinforcing[3].
This promotes the development of production technology of fly ash concrete and its popularization and application in other projects. 1 Overview of the Test 1.1 Raw Materials of the Test The cement used in this test is P.O 42.5 grade ordinary Portland cement manufactured by Zhengzhou Shangjie Cement Plant.
[3] Rongxi Shen. science and technology of cement-based composite materials—mechanism of low volume synthetic fiber concrete[M].
Beijing：China Building Materials Industry Press,1999
Journal of The Chinese Ceramic Society,1981,9(1)1:57-63.

It is the most important to produce the processing code of this part and implement the processing of the simulation motion, for improving the accuracy of the parts processing, meanwhile, it plays a guiding role for engineering practice. 1 Material Properties & Physical and Mechanical Properties 1．1 Material Properties The transmission box’s cast standard is ZL101-T5-GB9438-88.
The material brand is ZAlSi7Mg.
The material is possessed with the high intensity, at the same time, with good mechanical property and excellent cast, welding, corrosion resistance and cutting processing properties.
The simulation of the material removal process is to analog the real cutting process and to generate the model of product manufacture.
Asme Journal of Engineering for Industry, 113 (1991) 169-175. 8．

Friction stir welding is a solid-state process, which used frictional heat to blend the two joining materials together and create a metallurgical bond.
Hammer peening involved plastically straining a material using a hand held peening tool with an oscillating tip, which produces small, round indentations on the surface.
The interface between the weld nugget and the TMAZ corresponds to low hardness regions because the original structure in this region is over aged and there is not enough solute left in the material.
Sandtrom, Fatigue properties of friction stir overlap welds, International Journal of Fatigue 68 (2005) 456-468
Williams, Residual stresses in friction stir welded Al sheets, Applied Physics A Materials Science & Processing 74 (2002) 1161-1165

Thus, there is an urgent need to establish a recycling technology that reutilizes aggregate from concrete waste as a new material for fabrication of concrete in regard to environmental protection and optimized exploitation of resources.
It only can be applied as road bed materials due to low quality of recycled aggregate.
For analysis consideration, normal fresh coarse aggregate concrete were also produced taken from the same query as material for recycling.
References [1] Anwar SNR, Pemanfaatan Limbah Struktur sebagai Alternatif Pengganti Agregat Kasar Beton, e-Journal FT Unram, Vol 3( 2007) 84-93 (in Indonesian)
[7 ] Kencanawati NN, Iizasa S, Shigeishi M, Fracture Process And Reliability Of Concrete Made From High Grade Recycled Aggregate Using Acoustic Emission Technique Under Compression, Materials and Structures, Volume 46, Issue 9 (2013), 1441-1448