Precast Concrete Raft Units

1 A review of precast concrete pavements and rafts.- 1.1 Introduction.- 1.2 New precast pavement construction.- 1.2.1 Airfield construction.- 1.2.2 Road construction.- 1.2.3 Precast concrete slabs.- 1.2.4 Slab reinforcement.- 1.2.5 Slab prestressing.- 1.2.6 Fibre reinforcement.- 1.2.7 Precast operations.- 1.3 Pavement repairs with slabs.- 1.4 Concrete pavement design.- 1.4.1 Semi-infinite slabs.- 1.4.2 Finite-sized slabs.- 1.4.3 Concrete fatigue relationships.- 1.4.4 Subgrade loading.- 1.4.5 Slab handling stresses.- 1.5 Joints.- 1.6 Construction.- 1.7 Summary.- 2 Analytical procedures for concrete pavements.- 2.1 Introduction.- 2.2 Concrete pavement subgrade support characterization.- 2.2.1 The dense liquid foundation.- 2.2.2 The elastic solid foundation.- 2.2.3 Can the dense liquid and the elastic solid be compared?.- 2.3 Closed-form solutions for concrete pavement responses.- 2.3.1 Slab resting on a dense liquid foundation.- 2.3.2 Slab resting on an elastic solid foundation.- 2.3.3 Limitations of the closed-form solutions.- 2.4 Computerized numerical analysis methods for concrete slabs-on-grade.- 2.4.1 Computer programs for concrete pavements.- 2.5 Principles of dimensional analysis applied to concrete pavement data interpretation.- 2.5.1 Dimensional analysis and data interpretation.- 2.5.2 Dimensional analysis applied to pavement systems.- 2.5.3 Implications of dimensional analysis: some examples.- 2.6 Conclusions.- 3 The design of precast concrete raft-type pavements.- 3.1 Introduction.- 3.1.1 Raft production and use.- 3.1.2 Raft design and laying.- 3.2 Previous methods of analysis.- 3.2.1 Pre-computer methods of analysis.- 3.3 Repair criteria.- 3.4 Loading.- 3.4.1 Standard axle loadings.- 3.4.2 Non-standard axle loadings.- 3.5 Computer modelling.- 3.6 Raft pavement design method.- 3.7 Design example.- 3.8 Conclusions.- 4 The behaviour of precast concrete raft pavements under fatigue loading with special reference to their use in port areas.- List of symbols.-