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E-grāmata: Computer Modelling of Concrete Mixtures

  • Formāts: 272 pages
  • Izdošanas datums: 05-Aug-1999
  • Izdevniecība: CRC Press
  • Valoda: eng
  • ISBN-13: 9780203031148
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  • Formāts: 272 pages
  • Izdošanas datums: 05-Aug-1999
  • Izdevniecība: CRC Press
  • Valoda: eng
  • ISBN-13: 9780203031148

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The complexity of specifications and the number of materials options available today for concrete production mean that the traditional procedure of making trial mixes is now unnecessary, expensive and time consuming. Using J.D Dewar's research, this book shows how a small amount of materials data can be used confidently to predict the composition of the ideal product.
Preface ix
Acknowledgements xi
Notation xiii
Introduction
1(6)
Modelling principles and techniques
2(3)
The investigation
5(2)
The principal properties and test methods
7(14)
Mean size
8(5)
Relative density
13(1)
Voids ratio
14(6)
Overview concerning properties of materials and test methods
20(1)
Theory of Particle Mixtures
21(23)
General theory of particle mixtures developed for mixtures of two single sized components
21(15)
Illustrations of the main mechanisms and interactions within particle mixtures
36(6)
General theory of particle mixtures developed for mixtures of two graded components
42(1)
General theory of particle mixtures developed for mixtures of three or more components
42(1)
Situations requiring special care or treatment
43(1)
Extension of the theory of particle mixtures to pastes, mortars and concretes
44(15)
Reference slump for mortars and concretes
44(1)
Pastes: extension of theory of particle mixtures to cement--water pastes and other powder--water pastes
44(2)
Mortars: extension of theory of particle mixtures to cement--sand mortars
46(1)
Concretes: extension of theory of particle mixtures to concrete
47(12)
Allowance for admixtures, air and other factors on water demand and strength of concrete
59(32)
Influence of admixtures on the water demand of concrete
59(2)
Air content
61(5)
Time and temperature effects
66(1)
Strength
67(24)
Comparisons between theoretical and experimental data for aggregates, mortar and concrete
91(56)
Aggregate mixture trials
91(8)
Mortar trials
99(2)
Concrete trials
101(46)
Proportions and properties of concrete predicted by the use of the theory of particle mixtures
147(12)
Fine/total aggregate percentage (per cent fines)
147(2)
Water demand
149(9)
Overview
158(1)
Case studies
159(28)
A mineral addition for concrete
159(2)
Investigation of fine aggregate performance
161(1)
Design of concrete incorporating beavyweight aggregates
162(1)
An assessment of the concept of an ideal grading curve for aggregates or for concrete
163(10)
Further examples of optimisation of materials and concretes
173(14)
A user-friendly computerised system for general application
187(13)
Materials database
187(1)
Preliminary calculations -- general
188(1)
Materials screen
188(2)
Mix conditions
190(1)
Concrete specification
191(2)
Concrete trials data
193(1)
View
193(4)
Graphs
197(1)
Mixes database
197(1)
Utilities
198(2)
Appendix A Effects of compaction methods on voids ratios 200(11)
A1 General considerations
200(1)
A2 Effect of compaction energy level on voids ratios
200(4)
A3 Relationships between z, the void band-width factor, and r, the size ratio
204(6)
A4 Overview of effects of energy level of compaction
210(1)
Appendix B Adjustment of input data 211(4)
Appendix C Relations between cement and concrete properties 215(15)
C1 Research of Rendchen on cement and concrete properties
215(8)
C2 Research of Bennett, Sumner, Sprung, Krell and others
223(2)
C3 Additional supporting information
225(3)
C4 Data analysis of cement and concrete data from C&CA from the 1960s
228(1)
C5 Overview in respect of selected cement properties and their relationship to concrete properties
229(1)
Appendix D Comparisons between different models for simulating aggregate combinations 230(5)
D1 Overview of alternative models
234(1)
Notes 235(5)
Bibliography 240(8)
Further reading 248(5)
Index 253