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In this article, we focused on changes of mechanical properties in lining of tunnel caused by loess cavity.
For loess tunnel, its lining plays a crucial role.Therefore, analysis changes of mechanical properties of lining of the tunnels in Huangtu Regions taking account of loess cavity is very importent.
We focused on changes of mechanical properties in tunnel's lining caused by loess cavity.
Cavity changed the mechanical properties of the lining.
Through the analysis, we found that different locations, size of the cavity and depth of the tunnel are the main factors affecting the mechanical properties of the lining, and the larger the cavity, the greater the depth of the tunnel, and the lower location of the cavity, the greater the mechanical effects of the cavities on the lining of the tunnel.

Non-Autoclaved Aerated Concrete Porosity and Factors Affecting it L.A.
Interpore partitions contain gel and capillary pores, which have a significant impact on the total porosity, thus affecting the operating properties of aerated concrete.
The structure of pores is the single most important factor of strength and operating properties.
Quéneudec, Effect of microstructure on the mechanical and thermal properties of lightweight concrete prepared from clay, cement, and wood aggregates, Cement and Concrete Research. 28 (8) (1998) 1179-1190
Brusser, Structure and properties of cement concrete, Moscow, 1979

The objective of this work is in order to investigate how the mechanical properties of bioplastics synthesized from chitosan and porang starch with sorbitol plasticizer are affected by varying drying temperatures.
According to the study's findings, changes in drying temperatures significantly affect the mechanical properties of these bioplastics.
Drying temperature and time are crucial factors in determining the quality of the plastic, resulting in elastic and durable packaging [14].
For all the factors under analysis, the ideal circumstances are produced by a blend of drying time and temperature [15].
Thanckachan, Investigations of chitin and coconut fiber reinforcements on mechanical and moisture adsorption properties of corn starch bioplastics, Proceedings (2022) 2214-7853

Firstly the microstructure and mechanical properties of forged Ti-6Al-4V welded joints was focused on.
Mechanical properties of welded joints were investigated using macro-mechanical tests and microscopic observation.
The shape and distribution of β phase, α phase and α’phase are considered important factors for affecting mechanical properties of joints[5].
Therefore different microstructure of the base metal, the HAZ and the weld zone decides differences of mechanical properties of all regions.
Microstructure and Mechanical Properties in Weld Heat Affected Zone Of Titanium Alloy [J].

Class F fly ash-based geopolymers formed by pressure were prepared, and the preparation factors effecting on properties especially mechanical strength were investigated and optimized.
Curing conditions The preparation crafts of the fly ash-based geopolymer pastes formed by pressure(FAGP) mean all factors affecting the performances of the geopolymer specimens.
All factors are divided into 3 kinds: raw materials factors, forming factors and curing factors.
Properties as acid-resisting bricks 2.2.1.
Mechanical strength As discussed before, the CS of the FAGP alters with the preparation factors.

The constitutive relation of closed-cell foam rubber is established by the overlay analysis of the two impact factors.
Based on the above three factors, the closed cell foam rubber material in the linear elastic stage’s compression stage-strain relationship is as follows:
Conclusion Based on Gibson-Ashby microstructure model and hyperelastic mechanical properties of solid rubber, we have studied the effect that the closed-cell foam rubber pore structure and matrix material to the mechanical behavior.
References [1] L.J.Gibson,M.F.Ashby,Cellular Solids: Structure and Properties (Beijing,Tsinghua University Press,2003)
[2] HU Wen-jun,CHEN Hong,et al,Effect of Porosity on Properties of Open Cell Silicone Rubber Foam Materials, China rubber industry.1998,45:647~650

The physical and mechanical properties of rice-straw boards were shown in table 2.
Effect of technological factors on fire-retardant properties.
Taking the impact of MDI, UF and FRW on mechanical property and fire retardant properties of boards into consideration, factors optimizing were obtained according to the result of variance analysis.
Table2 showed that the physical and mechanical properties of rice-straw boards with FRW satisfied the national standard GB/T4897.3-2003, so the improvement of fire retardant property became the keypoint of factors optimizing.
And the physical and mechanical properties of rice-straw boards compressed with MDI and UF improved obviously.

Physical and Mechanical Properties of the Amorphous and Nanocrystalline Alloys Vladimir Tsepelev1,a, Yuri Starodubtsev1,2,b, Wu Kai-Ming3,c, Nadezhda Tsepeleva1,d and Boris Semenov1,e 1Boris Yeltzin Ural Federal University, 19 Mira str., Yekaterinburg, 620002, Russia 2Gammamet Research and Production Enterprise, 28 Kirov str., Yekaterinburg, 620028, Russia 3Wuhan University of Science and Technology, 947 Heping Avenue, Wuhan, Hubei, P.R.China av.s.tsepelev@urfu.ru, byunstar@mail.ru, cwukaiming@wust.edu.cn, dn.p.konovalova@urfu.ru, eb.v.semenov@urfu.ru Keywords: Melt, Structure, Amorphous Alloy, Nanocrystalline Alloy, Mechanical Properties.
The structure has been shown to influence mechanical properties of the material in preparing the melt before casting.
The paper presents the results of investigation in the melt preparation temperature affecting the structure, magnetic and mechanical properties of Fe82B12Si4C2, Fe77Ni1Si9B13 amorphous alloys and the Fe72.5Cu1Nb2Mo1,5Si14B9 nanocrystalline alloy.
The mechanical properties were determined by the mandrel diameter, on which the amorphous ribbon’s brittle fracture occurred, the ribbon was 10 mm wide and its edge was being formed as a result diamond wheel cutting.
The amorphous ribbon produced by the technology of melt overheating above the critical temperature possesses improved mechanical properties, is characterized by much lower structural relaxation, lower sensitivity to the destabilizing effect of internal stresses on the magnetic properties.

Microstructure and Mechanical Properties of Mg-1Mn-0.6Ce Alloy Containing Yttrium G.H.
And the influences of yttrium on microstructure and mechanical properties of the Mg-1Mn-0.6Ce magnesium alloy were investigated.
Fig. 2 SEM image and EDS spectra of the as-cast (D) alloy Mechanical Properties.
The tensile results demonstrate that adding Y to the Mg-1Mn-0.6Ce alloy can improve the mechanical properties.
On the other hand, gain size is also an important factor affecting the mechanical properties.

After multi-pass of ECAP there was no obvious difference of microstructures (TEM) and mechanical properties between them.
This technology is a complicated procedure, which is affected by multiple factors.
Experimental Results and Discussion Microstructure and Mechanical Properties during Single Pass of ECAP.
Microstructure and mechanical properties after multi-pass of ECAP Multi-pass of ECAP were conducted at room temperature using route Bc.
Little differences were found in microstructures and mechanical properties of pure copper by single pass of ECAP with different sample sizes.