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According to the examined data, the relationship between rCB loading and electrical conductivity of conductive composite varies with particle size of the rCB.
When the particles of rCB have poor interaction with the epoxy matrix, there will be less contact point between the particles and epoxy matrix, leading to reduction of the formation of conductive network.
However, further reduction in the size of the rCB to 1500 mesh (10 µm) and 2000 mesh (8 µm), a decreasing trend is observed compared to 1000 mesh (15 µm) particle size.
This shows a reduction in the crack resistance when compared to that of composite containing 2000 mesh of rCB, which shows lower toughness.

Therefore, reduction curves [8] were adopted for the elastic modulus and the yield strength of raw steel due to the elevated temperatures as shown in Fig. 5.
Fig. 6 Assumed time history of temperature Fig. 5 Strength reduction curves of raw steel due to elevated temperatures [8] (a) Elastic modulus (b) Yield strength Fig. 4 Assumed fire patterns (21F-24F) Pattern B Pattern A Y X Fig. 3 30-story, seven-span tower model 120m Front view Upper view 28m 28m Core structure Outrigger truss system Z X Y Figures 7 and 8 show the collapse modes of the tower exposed to each fire pattern when the member joint strength ratio CM was set to 0.3 and the axial force ratio in the columns of the 1st floor was set to 0.33 with the regular-strength outrigger truss system (structural strength similar to the beams on the 1st floor) placed on the roof.
In all of the cases, total collapse was inevitable, and the results clearly show the effect of the weakness of the member joints compared to the fully rigid joints and the effect of the strength reduction due to the elevated temperatures.
[5] ASCE/FEMA, World Trade Center Building Performance Study: Data Collection, Preliminary Observation and Recommendations, (2002)

James Stockton (1998) published the report of《formulation, implementation and application of reverse logistics plan》, the report discusses the reverse logistics in products recycling, resource reduction, recycling, material substitution and reuse, waste treatment and renovation, repair and remanufacturing and other aspects of the role from the perspective of enterprise logistics.
But in China, along with the constantly accelerating of urbanization, it brings a big problem that the number of construction waste shows a strong growth trend in the coming decades and that can not been solved by the source reduction strategy[5].
So the government environmental organizations need to research how to promote the development of recycling of construction waste.(4)The amount of construction waste generated too much.The third party reverse logistics service providers can not effectively deal with construction waste, so we need to study the production of construction waste from the source reduction.(5)The location of the third party reverse logistics provider should consider mainly three problems, namely, the environment cost and scale.
However, reverse logistics management information system also has some characteristics of other information system does not have, because it complexity and uncertainty:(1)Reverse Logistics Management's high dependency on information.(2)Distribution of information scattered, and Information generated diverse main body.(3)Information tracking time span.(4)The diverse properties of the information recording, and associated with the type of product.(5)Data maintenance complexity increases.

Per capita generation multiplier method is considered to be the earliest approach, in which the amount of C&D waste is calculated by multiplying per capita waste generation obtained from local statistical data with the region's future population trends in a specific period of time.
The findings revealed 16 obstacles, among which “lack of a well-developed waste recycling market”, “insufficient regulation support”, and “waste reduction does not receive sufficient attention in construction design” top the three most important barriers.
Owing to the fact that most of the current C&D WM policies are not detailed enough, government should release operable policies to effectively guide waste sorting, reduction, reuse, recycling, and disposal.
(4) Strengthen research and development (R&D) in C&D WM It is recognized that R&D can provide guidelines and technical support for waste reduction, reuse, recycling and disposal.

Raman data were recorded using Invia Raman Microscope (Renishaw) at room temperature with argon ion laser excitation at 514 nm (5 mW power) over a range 0 – 3200 cm−1. 3.
High quality CNTs produced with reduction of the impurities tend to have high thermal stability [16].
Increase in the intensity of G’-Band at ~2700 cm-1 indicates the reduction of amorphous carbon [21].
The surface damage caused by harsh oxidation would also have resulted in some reduction in length.

The effect of wear reduction in epoxy materials could be related to the increase of the level of molecular motion due to introduction of more flexible molecules of ERSO into the polymer matrix structure that causes dissipation of input mechanical energy at various types of strain.
When modifying the composition, the reduction of cross-link density and flexibility of interstitial fragments of cross-linking leads to easing relaxation processes as well as facilitating reduction in internal stresses and enhancement of performance characteristics.
Fig. 1 – XRD-spectrum of the filler specimen with the molar ratio СаСО3 и SiO2 1,2:1 Fig. 2 – XRD-spectrum of the filler specimen with the molar ratio СаСО3 и SiO2 1:1 Fig. 3 – XRD-spectrum of the filler specimen with the molar ratio СаСО3 и SiO2 1:1,2 Measurement data suggest that at the ratios СаСО3 and SiO2 = 1.2:1 , 1:1 and 1:1.2 the probability that the structure of synthetic wollastonite is similar to naturally occurring one amounts to 90.97%, 88.54% and 83.19%, correspondingly.

The morphology of outer surface of the steel pipe was intact, without obvious deformation and corrosion reduction.
The results of macroscopic analysis showed that the outer surface of the pipe was intact, without obvious deformation and corrosion reduction.
The wall thickness corrosion reduction area mainly occurred at the inner wall of the pipe in the lower part, where the corrosion is most concentrated at the position of 6 o 'clock.
Steel pipe factory data and macroscopic observation indicate that the black marking area was oil pitch paint, which has anticorrosion effect.

Introduction The transport sector is being driven by developments, which not only require the fulfilment of severe environmental regulations, but also promote weight reduction, increased productivity and reduction of production costs.
The obtained data was evaluated with the integrated software ARAMIS.
Therefore, a reduction of microhardness was observed (from 115 HV down to 68 HV), Fig. 4(a).

The analysis of the presented data has shown that at the increase of weight of 1 m2 of paper the total pore volume and their average radius decrease, which is reflected in the value of the true density.
Name of indicator Newsprint paper, % Whatman, % Corrugated cardboard, % 1 3 5 1 3 5 1 3 5 Needle penetration depth, 0.1 mm, no less than at 25 °C at 0 °C 38 24 30 6 1 - 53 26 38 25 13 2 44 24 36 20 3 - Elongation, cm, no less than at 25 °C at 0 °C 17 0,9 7 0,1 - - 19 1,2 11 0,8 - - 17 1,2 10 0,4 - - Softening point by ball-and-ring test, оС, no less than 49 54 62 51 57 63 51 59 80 Elasticity, % 45 33 - 48 35 - 54 38 - Studying the extensibility of the "bitumen + cellulosic fiber" system has established that introducing any type of fibers results in a significant reduction of ductility.
This contributes to significant reduction in elasticity and cohesion of the two-component system under study.
The further increase of the fiber content leads to a sharp increase of the viscosity of the system, the cause of which is the reduction of the distance between the cellulosic filler.

Therefore, almost all of the reduction of wall thickness is used to increase the outside diameter.
It proves that almost all of the reduction of wall thickness is used to increase the outside diameter.
On the contrary, if the plug position adjustment can be well controlled in practice, the occurrence of the wall thickness reduction will reduce and the uniformity of the wall thickness will be improved.
Therefore, we can see from the above data, the wall thickness of steel tube can be well controlled through rotary expanding process.