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Problem Put Forward Though a large number of Polycarboxylate superplasticizer engineering practice in production and engineering problems and solutions at home and abroad have proved that promote the use of polycarboxylate superplasticizer is the necessary requirement for high-performance concrete quality.
Fineness modulus is 2.8, clay content is 0.4%; using gravel as coarse aggregate and it is 5 ~ 25mm continuous grain-size distribution, of which more than 70% of 16mm of gravel, with clay content of 0.3%..
After a large number of experiments to confirm this use of silicone defoamer and testing to determine if silicone defoamer dosage is 0.05%, PC3018 air content is 1.8%.

It was found in this research, the achievable accuracy of the above mentioned approach was strongly influenced by the number of sampling points for each pixel and the total assessment length.
The corresponding dimension represented by a pixel, step size of the fine movement made by the precision stage, number of sampling points, total assessment length are the key factors in deciding the achievable accuracy.
The summary of the grain size (µm) measured after laser irradiation of a-Si films using various irradiation parameters.

The user IDs may be working card number or e-mail name, etc., the users will need to record different user name and password for different systems.A lot of people always forget passwords or use simple passwords for easily remembering, which brings security issues to the system.Resetting the passwords will bring additional working burdens to the administrators.
By referring to the features of RBAC, use the method combining LDAP with XML file store to control permissions, some data frequently changed is stored in the XML file, LDAP is responsible for a large number of query processing, the control system is responsible for updating and maintaining LDAP data and XML configuration file.As you can see in Figure 1,the server return list of application and resource according the user's permission,when the user submits a username and password.
After the authentication, the user information will establish the session on the server, store the encrypted authentication information on the client, various systems judge whether the verified users are logged in by taking authentication information and the effective judgment.The fine-grained control rules of application system are managed on its own, and this model reduces the burden of LDAP, so that LDAP query becomes more efficient.

Table 1 Parameters of heavy compaction test apparatus Hammer weight [kg] Diameter of hammer [cm] Drop height [cm] Dimension of compaction mould Number of hammerblow layer Number of hammerblow in every layer Admissible maximal grain size [mm] Inner diameter [cm] Height [cm] Cubage [cm3] 4.5 5.0 45 15.2 12.0 2177 3 94 40 In the molding of tamped concrete specimens, the maximal dense condition is the control standard.

Here, the number – ‘5’ is a turning point.
However, we can examine how our fine-grained, template-based approach to geometry generation is an improvement over existing techniques.
While these can be combined in a potentially infinite number of combinations, the space of levels we can create is much bigger and more varied.

Gregor et al. [5]used reinforced ordinary concrete (R/C) and reinforced ECC (R/ECC) for the shear beam elements cycle experiments show that, R / ECC shear failure occurs when a large number of minor cracks which is similar to ductility damage, shear toughness is much better than R / C.
With this method, damage is mitigated by increasing the shear strength and bond splitting strength through the strain hardening characteristics and by minimizing the width of cracks so as to require no repair through multiple cracking, whereby the number of fine cracks increases.
Acknowledgements This work is supported by 863 Projects, the Reinforced Concrete Used in High-Speed Railway (2008AA030704) and Fine Grain High Strength Steel and Square Steel Applications in Building Key Technologies (2008AA030704), Jiangsu and Nantong Civil Air Defense Office.

Contraction joint occurrence in two ways: one is nearly vertical distribution, seam side than the flat, mostly plates, sutural nearly parallel cores, vertical extension distance is longer, but often terminate in rock, slit to tensional joints; Second, nearly horizontally extending its poor continuity slit width is small, multi-cores such joints are filled, multi-stitch formation compared with the first small scale, a small number of such joints at diagenesis period.
Combination Type Filling conditions Primary porosity Blow pores Magmatic gas spill Top of the distribution of rock, round, oval Associated with contraction joints Common chlorite half filled Almond pores After filling pores between mineral Top distributed in rock, irregular Associated with the dissolution pores Filling - half filled Between gravel pores Accumulation and crystallization Distributed in the breccia Ccontraction with the joints connected Filling weak Intergranular pores Mineral crystallization Smaller pores, Polygonal Connected with the construction joints Filling - half filled Primary fracture Contraction joints Condensation contraction Distributed in the rock edge, high-low angle Connected with the solution openings Filling weak, filled with a small amount of mud Contraction joints Rock condensing contraction, fracturing Distributed in the rock Connected to the primary pores Filling - half filled Grain
Epidiagenetic and atmospheric water leaching, erosion is to produce a large number of secondary fractures.

In addition, to produce TiO2 nanowires or nanotubes, a number of parameters should be considered such as reaction temperature and reaction time.
The increase in diameter of the nanowires as the temperature increased from 200 to 220 ˚C was due to the fact that grain growth with temperature.
Acknowledgments This research is financially supported by grant number ENG60021S Engineering, Prince of Songkla University.

The weld metal consists of mainly columnar dendritic grains and solidification fronts have met almost perpendicular as observed commonly with an austenitic stainless steel.
Average results for each series are presented in Fig. 4 with the curves numbered and ordered by the maximum extension. 316L sheet metal specimens elongate nearly double before breaking and laser welding does not have an influence on them: all the specimens broke from the base material, not the weld.
Fig. 4 Average stress-strain curves for each series numbered according to maximum extension.

In the as-received state 0.5C alloy is formed by lamellar a2 and g colonies with occasional presence of equiaxed grains of g phase at colony boundaries.
Specimens were cycled with low constant strain amplitude for a selected number of cycles.
Then, cycling with higher ea followed for number of cycles sufficient to stabilize the cyclic response of the material.