tory burch sale Building structures Shrinkage _122

Shrinkage of building structures

Wu pulp red bars on both sides of the surface cracking, local infusion repaired hole interface cracking. Usually it is the combined result of multiple contraction. To prevent early shrinkage cracking. Should be used in the design of shrinkage and crack resistance with good crispness coefficient (ie, compressive strength and flexural strength of the material ratio) less material. Early shrinkage cracking resistance of these materials are relatively strong. Also can use the expansion of shrinkage-compensating cement or additives, to prevent the contraction also has a good effect. At site should pay particular attention to performance and quality of materials used, to prevent the serious segregation of concrete to ensure adequate protection of steel thickness, and to take appropriate conservation measures to high temperatures and dry weather, to prevent early dehydration. For the early shrinkage cracking,[link widoczny dla zalogowanych], should be based on the severity, location and potential harm for processing. Slightly irregular crack or patch to cover the surface of liquid permeable surface. Deep crack filling should be startling force, so that crack density and bond firmly with the substrate, or to ensure that does not affect the use and appearance of the situation, reinforce and repair the surface only, that is, first, revolves paste plus fixed or reinforced film , and then overlay. Just to cement concrete or mortar overlay does not work, because the deep cracks under certain conditions may also be reflected up, not stop it to continue cracking. 4 Other cracks prevention addition, there are some other factors may also cause cracking, such as poor volume stability of cement, additives poor performance, after the cold saturated structures subjected to severe shock or impact load, severe overloading, Reinforced pad configuration unreasonable or inappropriate support, materials, improper handling interface or construction joints, poor quality of construction and other primary collapse. There are preventive measures, strict material selection and testing; during the cold season to prevent the structure (the brother turn 33) Zhang Fenge Suwa water supply and drainage of the reform process set 33 so that water drainage is an industry point of view to put forward . With the \Basic knowledge of curriculum reform: strengthening chemical basis,[link widoczny dla zalogowanych], to maintain the mechanical advantage. Such as the creation of inorganic chemistry, organic chemistry, physical chemistry, analytical chemistry, biochemistry and other courses, and pay attention to the chemistry and microbiology courses} end table set up and should fully reflect the industrial water supply and drainage is a new point of view. If the urban water supply and sewerage networks to re-group to Taiwan to two courses to the sewer project, the existing water supply network of curriculum design and course design combined sewer system, and increase the content of urban planning and design. In addition,[link widoczny dla zalogowanych], you can give water (Ⅱ) and water treatment (1) units and a water engineering, and avoid duplication of public principle, and the reduced hours will be used to expand the new content. Thus, water supply and drainage will be changes to the curriculum: a water source for a water treatment works project for a water pump and a drainage pump station water supply and drainage works in a construction of a water supply pipe network into a water treatment works of a water body. So, not only broaden the basis of water supply and drainage, but also enhance the water supply and drainage to the edge of the subject areas of penetration, so that out students who not only has a solid professional foundation, but also to acquire the relevant field of design, monitoring and analysis and other skills. 3 proposed the establishment of water supply and drainage in different forms of professional institutions, training objectives is not the same,[link widoczny dla zalogowanych], so the curriculum can not only emphasizes the same from the reality, according to the distribution of social needs and the direction of the students so that curriculum focused. Comprehensive universities such as the research focus on theoretical basis, the curriculum should be noted that theoretical guidance, theory-based research and engineering design ability; and engineering colleges focus on engineering practice, the curriculum should focus on curriculum design, production practice, the construction and other aspects. References l Jiu Hui Bao. On the water industry. Yong-processing industry, 1997 (17) 2 Zhang Xiaojian deepen teaching reform to adapt to the water industry. China's water supply and drainage, 1997 (6) 3 feet long Rui, Zhang Zhi. Water science and engineering disciplines there is the inevitable result of social development. Water Supply and Sewerage, l998 (4) (duty lying Series Guo Shujun) (Continued from page 13) or full cold water; to prevent the structures subjected to severe dynamic load impact (when unavoidable, should be ready reinforce or buffer); prevent early severe overloading of structure formation; structural reinforcement to prevent the construction of place and the actual occurrence of Shouli Bu Fu and the support pad errors. The different materials or different processes in different parts of the interface between the place is often error-prone, misconduct, there will be varying degrees of cracking, therefore,[link widoczny dla zalogowanych], the construction of these weaknesses have to do a good job. The treatment of these fractures should first eliminate the reasons, further reinforcement, and finally the pouring or caulking to restore appearance. (Editor Guding Ren)

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