|
中文摘要 |
6-7 |
|
ABSTRACT |
7-12 |
|
1 Introduction |
12-28 |
|
1.1 Background of the project |
12-14 |
|
1.2 Mechanical performance of RPC |
14-18 |
|
1.3 Research and application |
18-24 |
|
1.3.1 Mierostrueture, hydration and durability |
18-19 |
|
1.3.2 Mechanical property |
19-23 |
|
1.3.3 Application |
23-24 |
|
1.4 Outline of the dissertation |
24-28 |
|
2 Mechanical Properties of Steel-Fiber Concrete |
28-52 |
|
2.1 Reinforced Mechanism of steel-fiber concrete |
28-44 |
|
2.1.1 Conception of the composite material |
28-30 |
|
2.1.2 Average stress and the elastic modulus of the concrete with straightforward continuous fiber |
30-31 |
|
2.1.3 Effective coefficient, fiber stress and the elastic modulus of the random short fibers |
31-39 |
|
2.1.4 Ultimate strength and critical volume fraction of random discontinuous steel fibers concrete |
39-41 |
|
2.1.5 Fiber space theory |
41-43 |
|
2.1.6 Unification theory of steel fiber concrete strengthening mechanism |
43-44 |
|
2.1.7 Summary |
44 |
|
2.2 Bonding property of steel fiber concrete |
44-48 |
|
2.2.1 Factors affecting the bonding properties of steel fiber concrete |
45-47 |
|
2.2.2 Summary |
47-48 |
|
2.3 Influence of steel fibers on the performance of the concrete |
48-49 |
|
2.4 Relationship of stress and strain under one-way compression of steel fibers |
49-51 |
|
2.4.1 Relationship of stress and strain of steel fiber concrete under axial compress |
49-50 |
|
2.4.2 Summary |
50-51 |
|
2.5 Chapter Summary |
51-52 |
|
3 Mechanics and Properties of Reactive Powder Concrete (RPC) |
52-59 |
|
3.1 Reinforced strength and the toughness mechanism of RPC |
52-54 |
|
3.1.1 Measures to improve the homogeneity of RPC |
52-53 |
|
3.1.2 Reinforced toughness mechanism of RPC |
53-54 |
|
3.1.3 Summary |
54 |
|
3.2 Mechanical performance of RPC |
54-58 |
|
3.2.1 Compressive strength of RPC |
54-55 |
|
3.2.2 Bending strength of RPC |
55-56 |
|
3.2.3 Shear strength of RPC |
56-57 |
|
3.2.4 Mechanical performance of RPC |
57-58 |
|
3.2.5 Summary |
58 |
|
3.3 Chapter Summary |
58-59 |
|
4 Microstructure of RPC |
59-69 |
|
4.1 Interfacial transition zone (ITZ) |
59-60 |
|
4.1.1 Concept of ITZ |
59 |
|
4.1.2 Properties of ITZ in concrete |
59-60 |
|
4.1.3 ITZ of the RPC |
60 |
|
4.2 Granular characteristics |
60-62 |
|
4.2.1 General |
60-61 |
|
4.2.2 Cement particle |
61-62 |
|
4.2.3 Granular characteristics of RPC |
62 |
|
4.3 Particle packing |
62-68 |
|
4.3.1 Particle size |
63 |
|
4.3.2 Particle shape and texture |
63-64 |
|
4.3.3 Particle size distribution |
64 |
|
4.3.4 Agglomeration |
64-65 |
|
4.3.5 Stability of particle positions |
65 |
|
4.3.6 Wall effect |
65-67 |
|
4.3.7 Bridge and arching |
67 |
|
4.3.8 Vibration |
67-68 |
|
4.4 Particle packing of RPC |
68 |
|
4.5 Summary |
68-69 |
|
5 Analysis of the Interfacial Transition Zone (ITZ) |
69-82 |
|
5.1 Model for simulation of ITZ |
69-72 |
|
5.1.1 Non-placement model |
69-70 |
|
5.1.2 Basic forms of"arch structure" |
70-71 |
|
5.1.3 Stability analysis of the basic forms |
71-72 |
|
5.1.4 Principles of forming an arch structure |
72 |
|
5.2 Formation of microstructure near the wall |
72-73 |
|
5.3 Cement particle placement near the wall |
73-76 |
|
5.3.1 Determining the length of the string |
74-75 |
|
5.3.2 Determining a reasonable shape for the arch axis |
75-76 |
|
5.3.3 Conditions assessment for particle placement at the wall |
76 |
|
5.4 Cement particle placement |
76-77 |
|
5.5 Results and Analysis |
77-81 |
|
5.5.1 Results of Simulation |
77-79 |
|
5.5.2 Analysis and Conclusion |
79-81 |
|
5.6 Summary |
81-82 |
|
6 Conclusion and suggestion |
82-84 |
|
6.1 Innovation |
82 |
|
6.2 Conclusion |
82 |
|
6.3 Suggestion |
82-84 |
|
Reference |
84-88 |
|
作者简历 |
88-90 |
|
学位论文数据集 |
90 |
