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The main drawback of this material is the high level of autogenous and especially drying shrinkage that affects it, causing the deterioration of its mechanical properties.
The type and dosage of the activator as well as the method of curing have a significant effect on the course of the hydration process and final mechanical properties [2].
The main motivation for the research is to reduce the cracking tendency and improve the tensile properties of these materials.
Since spontaneous drying of the material affects its final properties, conditions which are supposed to have minor or no impact on the mechanical properties of AAS mortar were chosen.
Day, Factors affecting early hydration characteristics of alkali-slag cements, Cem.

Fiber surface treatment plays an important role in the mechanical properties of CFRC and the optimum way is HNO3 treatment.
Previously, many ways have been tried to improve both the electrical and mechanical properties of CFRC.
Results and discussion Factors affecting resistivity, compressive strength, and flexural strength are water-to-cement ratio, silica fume content, and fiber surface treatment, respectively.
The difference value analysis of orthogonal experiment results show that water-to-cement ratio is the most important factor among the three factors in affecting the resistivity of CFRC.
Fiber surface treatment plays an important role in the mechanical properties of CFRC.

There are many factors which can affect the mechanical properties of interface .Targeted research about effect anti-slide pile design parameters act on the contact stress is carried out in this paper.
And the mechanical properties analysis of the contact surface between the anti-slide pile and soil is the premise to solve the interaction problem between anti-slide pile and soil.
(3) Research of the interface element constitutive model [3, 4]; (4) Research of contact surface mechanical properties [5, 6].
Research Status of Interface Mechanical Properties between Pile and Soil.
Experimental study of mechanical properties of interface between pile and macadam soil in accumulative landslide in three gorges reservoirarea.

However, polyurethane foam products are exposed to external influences during operation, such as mechanical loads, temperature conditions, humidity, and several other factors.
Therefore, studies of the influence of operational factors on changes in the operational properties of polyurethane foams allow us to assess the reliability, durability, and cost-effectiveness of technical solutions using this material.
In turn, isocyanates form a solid phase of this material, and their amount is a key factor affecting the mechanical characteristics and thermal stability of polyurethane foam [10].
It has been experimentally established [1] that the foam's density correlates with its viscoelastic properties, which affect the damping effect.
The temperature is one of the main factors affecting the properties of polyurethane foam, and there are differences in the mechanical properties of this material at different temperatures.

Fabrication and Measurement of Flexible Polymer Aerogel and Factors Affecting its Thermal Conductivity Jiazhen Wang1,a, Jing Du1,b and Yunbo Wang2,c* 1Nanjing Foreign Language School, 30 East Beijing Road, 210008, China 2Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, CA90095, United States ahhhwjz2@outlook.com, bdu_j@nfls.com.cn, cyunbo0527@g.ucla.edu Keywords: Polymer Aerogel, Sol-Gel Technique, Ambient Drying, SEM Abstract.
The analysis based on SEM pictures shows that PVC type and concentration would greatly influence aerogel’s structure thus affecting its thermal conductivity.
The material chosen for the aerogel is one of the most critical factors, and we choose PVC for the following reasons: l First, PVC is commonly used, cheap, safe, and has excellent mechanical properties.
Experiment Design Fifteen control groups are set up to study how the concentration of the PVC-DMF solutions and characteristics of PVC powders affect the aerogel's properties.
Thermal properties of organic and inorganic aerogels 1994 Journal of Materials Research, 9(03), 731–738

To master the regular pattern of the influence of relative factors on physical and mechanical properties of phyllite is the basis to establish an effective construction method.
As a regional metamorphic rock, the engineering properties of the phyllite are rather complex.
To master the regular pattern of the influence of relative factors on physical and mechanical properties of phyllite is the basis to establish an effective construction method.The influence of water and mineral composition on physical and mechanical properties of phyllite was analyzed through relevant tests.
It is necessary to find out a set of well-established scientific construction methods for phyllite tunnels, and one of the bases to find an effective construction method is to acquire the law on the influence of relevant factors on physical and mechanical properties of phyllite.
Test on influence of mineral composition on physical and mechanical properties of phyllite A large number of tests have been done during the construction process, according to the tests, the results of the physical and mechanical properties of phyllite that is mixed with different minerals are shown as Table 4.

Effecting Factors Study for Powder Flow Characteristics Ziming Kou1, a , Rui Li2, b 1 College of Mechanical Engineering, Taiyuan University of Technology, No. 79 West Yingze Street, Taiyuan, Shanxi, China 2 College of Mechanical Engineering, Taiyuan University of Technology, No. 79 West Yingze Street, Taiyuan, Shanxi, China a zmkou@163.com, bm.m.e.rli@126.com Keywords: Powder; Flow Rate; Effecting Factors; Hopper Abstract.
To understand the influence of external factors on powder flow process from the hopper, and to get the prerequisite to control the flow rate, by doing a lot of experiments.
In this paper, the size distribution regulation was acquired by SCIROCCO 2000 (dry method) laser granulometry, and then the affection on flow rate from many external factors were separate considerations.
Not only many factors can affect the flow from the hopper, but also dynamic and automatic measurement was very difficult.
Silo Discharge Simulations With Different Particulate Properties Using the Distinct Element Method: TRANSACTIONS OF THE CHINESE SOCIETY OF AGRICULTURAL ENGINEERING, 1999, 15(3): 65~69

The brazing process of magnesium alloy AZ31 was studied, and the mechanical properties of the weld were examined, and the main factors were analyzed through brazing furnace tests in this work.
And its mechanical properties (the maximum shear strength is 6 MPa) were much lower than that of welded joints with the flux protection.
In addition, improving welding heat source to reduce heat affected zone can improve the mechanical properties of welded structures effectively.
As the coarse dendrite structure could reduce the mechanical properties of joints, that producing more uniform and smaller weld organizations such as the isometric crystal by heat treatment or accelerating cooling rate is a effective way to improve the mechanical properties of magnesium alloy brazed joints.
The flux, fixtures, temperature and holding time were important factors affecting the performance of lap joint in the furnace brazing of AZ31 magnesium alloy. 2.

Its properties have been better than 60Si2CrVA steel.The difference between of them is using controlled rolling process for D701 steel.The affect of hot treatment process was studied by orthogonal test on D701 steel property in the article.
The mechanical property was tested by hydraulic universal test machine.
Table 2.Four factor and three level test Factor\level 1 2 3 quench temperature ( °C ) 840 870 900 quench time ( min ) 20 30 40 temper temperature ( °C ) 390 420 450 temper time ( min ) 60 75 90 Results Mechanical property.
Fig.5 Fracture shape on D701 steel by tensile test (a)held 30 min at 900°C oil quench and held 75 min at 390°C water cooled; (b)held 40 min at 870°C oil quench and held 75 min at 420°C water cooled; (c)held 20 min at 840°C oil quench and held 75 min at 450°C water cooled; a b c a b c 5μ 5μ 5μ 5μ 5μ Discussions According to the orthogonal test of heat treatment process, the most important influencing factor to the mechanical properties of high performance alloy spring steel D701 is the tempering temperature, whose datak element is highest among the four factors.
(2) The tempering temperature is the most important influencing factor to the mechanical properties of high performance alloy spring steel D701.

Metallographic Examination of Forming Improved Mechanical Properties via Surfacing of Steel HARDOX 450 with Flux Cored Wire S.
Phase composition, defect substructure, and mechanical and tribological properties of the steel Hardox 450 surfaced with С-V-Cr-Nb-W wire are analyzed relying on procedures of transmission diffraction microscopy, mechanical and tribological methods.
Mechanical properties of the deposited metal and steel are characterized according to the microhardness value (HVS-1000A) (indentation load 5 N).
Conclusion The metallographic tests of phase composition, defect substructure, mechanical and tribological properties of material deposited singly and iteratively on steel by С-V-Cr-Nb-W surfacing wire are carried out.
It has been found out that improvement of mechanical and tribological properties of the deposited layer is possible due to the developing multiphase submicro- and nanostructure.