Dissertation > Excellent graduate degree dissertation topics show

Experimental Investigation of Cement Paste Coupon Strength of Microwave Heating

Author: WangYuLiang
Tutor: LiuTingQuan
School: Hebei University of Technology
Course: Structural Engineering
Keywords: cement strength hydrous reactive microwave heating influence
CLC: TU528
Type: Master's thesis
Year: 2009
Downloads: 25
Quote: 0
Read: Download Dissertation

Abstract


In the medical sterilization, food drying, asphalt pavement repair and other fields, the applications of microwave technology is more common and relatively mature, but the research in the concrete and cement hydration application is still rare. Characteristics of microwave heating will be applied to decide the concrete feasibility of heat conservation. Water is the best medium to absorb microwave energy. After cement and water mixed cement slurry containing a lot of polar molecule formed and in the process of cement hardening, it is essential to maintain certain water. Therefore, the cement slurry is also a good medium to absorb microwave energy. The test shows that in the process of microwave heating and conservation the test block at the early strength rapidly improve as long as reasonable measures are taken and the intensity of its 28d and stand test block has no much difference. Compared with the heating methods buoyantly used, the heating speed is quick and in the test as long as the microwave heating is stopped the temperature doesn’t cease immediately, and the thermal inertia is small easy to control the temperature.This paper focuses on two parts: First is used to study the impact of cement paste on the microwave absorption rate in scope of water-cement ratio (0.4 ~ 0.7), the results showed that: The cement paste in scope of water-cement ratio at 0.4 ~ 0.7, microwave absorption rate increases with increasing water-cement ratio. Second is putting the 0.28 water-cement ratio of cement paste test block separately in microwave maintenance and standard maintenance, comparing the intensity, the results showed that: Microwave heating can promote the maintenance test block of cement hydration, making the test block in a relatively short time to receive higher levels of intensity. The intensity of test block in microwave heating maintenance achieves 38.99MPa after 10h, it is higher than the intensity of test block in standard maintenance (32.97MPa) after 1d about 20%; putting the test block in standard maintenance after microwave maintenance, and its intensity of 1d achieves 48.93MPa, higher than the intensity of standard maintenance of 1d about 50%; and as long as taking right measures, its intensity after 28d is close to the intensity in standard maintenance.

Related Dissertations

  1. Investigation on Microstructure and Properties of Cadmium-Free Silver-Based Intermediate Temperature Filler Metals,TG425.2
  2. Study on Springback of High-Strength Steel Stamping,TG386
  3. Development of Turbine Rotor Dynamic Balance System,TH877
  4. Partical Combination of Fine Powder Effect on Performance of Cement and Concrete,TU528.041
  5. Research on the Correlation between Formative Assessment in College EFL Class and Students’ Learning Attitude,H319.3
  6. Experimental Study of Porous Composite Materials on the Base of Recycled Concrete Powder-Cement,TU528
  7. The Experimental Research on Regeneration Aggregate and Proportioning of Recycled Concrete Brick,TU528
  8. The Study in the Influence of the Cell Phone on the Moral Values of the College Students and the Countermeasure,G641
  9. Effect of Micro Component on the Performance of Cement Clinker be Produced by Phosphogypsum,TQ177.3
  10. Spatial Analysis and Pollution Evaluation about Water Environment Actuality of Rural Surface Water in Typical Regions of Jiangsu Province,S271
  11. Finite Element Analysis and Optimization Design of a Tractor Cab,S219.02
  12. The Research on the Physiological Mechanism of the Subtending Leaf Nitrogen Concentration Impacting the Strength Formation in Cotton (Gossypium Hirsutum L.) Fiber,S562
  13. Zhongcai Hanjiang Cement Co.,LTD Marketing Strategy Research,F274
  14. Physical Modification of the Soybean Protein Concentrate by Alcohol Extraction,TS201.21
  15. High-rise building under the jointed rock slope stability studies,TU457
  16. The Chongqing regional economic development differences evolved with the economic development of Chongqing,F127
  17. Based on ANSYS fiberglass speedboat structure parameterized finite element analysis module,U674.934
  18. Influence on the use of bribes,D924.392
  19. Relationship marketing strategy research based on mass customization perspective,F274
  20. Measurement of Geotechnical Properties for Sewage Sludge at a Disposal Site and Evaluation of Its Influence on Slope Stability of MSW Landfill,X705
  21. The Influence of Glucose Variability on Prognosis in Critically Ill Patients,R587.1

CLC: > Industrial Technology > Building Science > Building Materials > Non-metallic materials > Concrete and concrete products
© 2012 www.DissertationTopic.Net  Mobile