Dissertation > Excellent graduate degree dissertation topics show

Research on Mechanical Performance of Prestressed Concrete Bending Members after Corrosion of Sulphate

Author: ZhuLanFang
Tutor: CaoDaFu
School: Yangzhou University
Course: Structural Engineering
Keywords: Sulfate Corrosion Prestressed concrete members Mechanical properties
CLC: TU378
Type: Master's thesis
Year: 2009
Downloads: 113
Quote: 1
Read: Download Dissertation

Abstract


Durability of concrete structures is a common concern in today's world. Currently, the salt corrosion caused deterioration of reinforced concrete structures has become a civil engineering durability facing a major disaster, causing widespread concern, to become a major research focus. Affect the durability of concrete sulfate attack is an important factor, and its corrosive effect will lead to reduction in the strength of concrete and viscous loss, causing the destruction of reinforced concrete structures, buildings that did not meet its expected design life on the incidence of premature damage, resulting in a great waste of human and financial resources. In this paper, the National Natural Science Fund Project \were studied. Adopt the method of soaking the laboratory room for immersion corrosion member, respectively, at 3%, 5%, 10% concentration of sodium sulfate solution after immersion corrosion member corresponding time taken for bending capacity test. The compressive strength of concrete, as well as dynamic elastic modulus cracking load, ultimate strength and other mechanical properties were compared and analyzed to draw some conclusions for the sulfate corrosion of prestressed concrete structure durability of work to do a pre- research work. This paper focuses on the following aspects are discussed analysis: 1. Before and after the compressive strength of concrete on the corrosion and dynamic elastic modulus were compared and analyzed sulfate corrosion of concrete subjected to the variation of intensity. (2) on the corrosion of prestressed concrete members for flexural capacity of the test, and with non-member corroded by sulfate comparative analysis of results before and after corrosion variation of mechanical properties of components. 3 concentration of corrosion and corrosion of time on the mechanical properties of prestressed concrete members were investigated. The results show that the etching time on the mechanical properties of prestressed concrete members more obvious effects, undergo two months of sulfate corrosion or corrosion after a long time, before corrosion test beams representing the mechanical properties were not different variation law. Overall, the etching earlier, the index increased compared with before corrosion, but a longer immersion time, the tendency to decrease. Etching the component concentration changes also affect the mechanical properties, the concentration of the etching solution is essentially larger, more obvious changes.

Related Dissertations

  1. Reactive Hot-Pressing and Mechanical Properties of （ZrB2-ZrO2）/BN Composites,TB332
  2. The Study of Yeast Frost-resistance and Application in Frozen Dough,TS213.2
  3. Modification and Application of the Waste Fluorgypsum and the Treating of High Concentrations Fluoride Wastewater,X703
  4. Anti-corrosion Property of Flake Zinc Epoxy Coating Doped with Rare Earth in SRB,TQ630.1
  5. Dewatering and Aerobic Composting of Cyanobacteria from the Taihu Lake,S141.4
  6. Roles of MMP-7 and Lysozyme in the Pathogenesis of Ulcerative Colitis Induced by DSS in Balb/c Mice,S858.91
  7. Research on Electrochemical Synthesis and Application of Conductive Polyaniline,O633.21
  8. Rhubarb , magnesium sulfate treatment of severe acute pancreatitis comparative study of the clinical efficacy,R576
  9. Infrared spectroscopy surfactant aqueous two- phase system of,O647.2
  10. Modification of Talc Powder and Its Reinforcing and Toughening on Recycled Polypropylene,TQ325.14
  11. Study of the Effect of High Voltage Transmission Lines on Buried Metal Pipeline Corrosion,TE988
  12. Study of Microbial Corrosion in Central Air-conditioning Cooling Water System,TU831.4
  13. Functional polyacrylamide hydrogel Preparation and Properties,TB383.1
  14. Distributed optical fiber sensing technology in the steel corrosion Monitoring,TU375
  15. Water pump corrosion properties of metallic materials,TG174.3
  16. POSS silicon insulating material formulations and application of exploration and research,V259
  17. Study on Mechanical Performance of Curved Box-girder with Corrugated Steel Webs,U448.213
  18. Roles of NF-κB and STAT3 Pathways in Ulcerative Colitis-associated Carcinogenesis: Based on a AOM-DSS Mouse Model,R735.35
  19. The Pilot Study of the Effect of White-Mud Desulfurization Sea-Water to Marine Environment in Jiaozhou Bay,X55
  20. Preparation of Micro-Arc Oxidation Ceramic Coating on Mg Alloy and the Research of Galvanic Corrosion,TG174.453
  21. Electrical stimulation between tredecimguttatus proteomic analysis of venom,Q51

CLC: > Industrial Technology > Building Science > Building structure > Concrete structure,reinforced concrete structure > Prestressed Concrete Structure
© 2012 www.DissertationTopic.Net  Mobile