Concrete Pavement Design Guidance Notes
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This comprehensive design guide summarizes current developments in the design of concrete pavements. Following an overview of the theory involved, the authors detail optimum design techniques and best practice, with a focus on highway and infrastructure projects.
Worked examples and calculations are provided to describe standard design methods, illustrated with numerous case studies. The author provides guidance on how to use each method on particular projects, with reference to UK, European and US standards and codes of practice.
Concrete Pavement Design Guidance Notes is an essential handbook for civil engineers, consultants and contractors involved in the design and construction of concrete pavements, and will also be of interest to students of pavement design.
for URC URC systems designed over a granular sub-base JRC systems over a granular sub-base JRC systems over a CBM sub-base 6 9 10 14 17 22 25 30 34 37 42 48 48 50 50 51 51 56 58 62 66 66 71 72 81 86 92 105 107 107 xii 7.4 7.5 7.6 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 Figures CRC systems over a granular sub-base CRC systems over a CBM sub-base FAA designs for Boeing 747-400 loading Joint efﬁciency Possible joint construction problems Joint sealant
an in situ plate-bearing test result. The plate-bearing test is slow and difﬁcult to undertake, and must be used cautiously in the design process. The standard test methods are deﬁned in: • • • BS 1377 Part 9 1990 Clause 4.1 ; ASTM D1195-93 ; ASTM D1196-93 . The test descriptions do not speciﬁcally identify a method of ﬁxing a k value from the test data. The test is conducted with a standard 30 in (or 762 mm) diameter plate. It is common practice for pavement design to report the
is achieved with joint spacing between four and six times the radius of relative stiffness (see Chapter 5) of the pavement system. Various investigations are recorded in an ACPA paper  which recommends that maximum efﬁciency is achieved by a joint spacing of 25–30 times the pavement thickness, up to a maximum spacing of 4.5 m. UK Highways Agency advice allows slightly wider spacing; if limestone aggregate is used, the spacing may be increased by 20% since limestone has a much lower coefﬁcient
gain process. Concrete materials will also shrink and warp as they cure or age. However, here it will simply be assumed that the appropriate techniques are employed during this ‘curing’ process to make sure that shrinkage cracks are avoided and that loading is not applied prematurely. The actual processes and the different curing rates induced by different types of cement and at different temperatures are not issues dealt with here. 4 Introduction 1.6 Units This book is written principally
Works . Clause 1007: Separation and waterprooﬁng membranes. The clause has recently undergone a revision, and it now insists that an impermeable plastic sheeting membrane, 125 microns thick, must be used under all URC and JRC pavements. A bituminous-sprayed tack coat system is required under CRC systems. Airﬁeld work: Defence Works Function Standard, Speciﬁcation 033, Pavement Quality Concrete for Airﬁelds . Slip membranes are detailed under Clause 3.8: Separation Membrane. The clause is