Detail of MH 5010-1999

Introduction of MH 5010-1999

1.0.1 The Specifications is formulated with a view to making asphalt concrete pavement design of civil airports up to safety and usability, advanced technology, uniform criteria and economic rationality. 1.0.2 The Specifications is applicable to asphalt concrete pavement design of constructed, extended and renovated civil airports. Asphalt concrete pavement design of the civil part of joint-used airport by military and civil units shall also comply with the Specification. Asphalt concrete pavement design of general aviation airports is conducted by reference to the Specification. Design includes newly-built asphalt concrete pavement structure course combination design, asphalt concrete pavement thickness design, asphalt concrete overlay course design of original pavement and asphalt concrete mixture design. 1.0.3 Design principle 1 The airport asphalt concrete pavement shall be designed according to the property, purpose, airfield area index, aircraft characteristics and transportation load of the airport and in combination with the local landform, climate, hydrological and geological conditions, engineering geology, materials, and construction technology, etc. 2 Asphalt concrete pavement structure of airport in specific area, e.g. permafrost, desert, salty soil, expansive soil, collapsible loess and soft soil, shall be designed according to the requirements of the Specifications and in combination with scientific achievements and practical experiences from similar areas at home and abroad. 3 As for asphalt concrete pavement design of airports with airfield area index II as A and B, the technical indexes of the Specifications may be determined according to specific conditions. 1.0.4 Design theory and method As for the newly-built asphalt concrete pavement structure, its typical structure thickness of asphalt concrete pavement is calculated by Method CBR, i.e. utilizing limiting equilibrium relationship of overall shear strength of pavement structure. As for the original pavement reinforcement design, the internationally general empirical formula is used to calculate thickness of overlay course. 1.0.5 Asphalt concrete pavement structure design of civil airports shall not only meet the requirements of the Specifications but also comply with those stipulated in the current relevant national and professional mandatory standards.

Contents of MH 5010-1999

1 General Provisions 2 Terms and Symbols 2.1 Terms 2.2 Symbols 3 Pavement Structure Course Combination and Material Composition 3.1 General Requirements 3.2 Climate Zone 3.3 Subgrade 3.4 Bed Course 3.5 Base Course and Subbase Course 3.6 Asphalt Concrete Surface Course 3.7 Pavement Zone and Pavement Structure Thickness 4 Design Parameters 4.1 Design Loads 4.2 Design Life 4.3 Calculation of Annual Number of Designed Aircrafts Put into Operation 4.4 Accumulative Equivalent Numbers of Design Load Repetition 4.5 Fatigue Correction Coefficient of Pavement Structure Thickness 4.6 CBR Values for Design 4.7 Ratio of Takeoff Sorties to Landing Sorties 5 Calculation of Asphalt Concrete Pavement Structure Thickness 5.1 General Requirements 5.2 Calculation of Asphalt Concrete Standard Pavement Structure Thickness 5.3 Determination of Equivalent Single-wheel Load 5.4 Determination of Typical Structure Thickness of Asphalt Concrete Pavement 5.5 Fatigue Correction on the Typical Structure Thickness of Asphalt Concrete Pavement 5.6 Layered Designed of Pavement Structure 6 Design of Asphalt Concrete Overlay Course 6.1 General Requirements 6.2 Investigation and Assessment on the Original Asphalt Concrete Pavement 6.3 Investigation and Assessment on the Original Cement Concrete Pavement 6.4 Overlay Design 6.5 Reinforcement Design for Cement Concrete Pavement 6.6 Reinforcement Design for Asphalt Concrete Pavement 7 Design of Asphalt Concrete Mixture 7.1 General Requirements 7.2 Asphalt Materials 7.3 Coarse Aggregates 7.4 Fine Aggregate 7.5 Filler 7.6 Mix Proportion Design of Asphalt Mixture 7.7 Mix Proportion Design of Modified Asphalt Mixture 7.8 Design of Crashed Stone Mastic Asphalt Concrete Mixture (SMA) Appendix A Design Parameters of Common Aircrafts Appendix B Determination of CBR Values for Design of Subgrade under Pavement Appendix C Procedures for Indoor and Field Tests of California Bearing Ratio (CBR) Appendix D Reference Values for Critical Heights of Subgrade Appendix E Curve Diagram of Flexure Coefficient Appendix F Percentage (PRD) Curve of Equivalent Single-wheel Load (ESWL) of Common Aircraft Appendix G Flow Chart for Thickness Calculation of Asphalt Concrete Pavement Structure Appendix H (I) Example for Computer-aided Thickness Calculation of Asphalt Concrete Pavement Structure Appendix H (II) Example for Manual Thickness Calculation of Asphalt Concrete Pavement Structure Appendix J Methods of Maximum Flexure Position Calculation and ESWL PRD Curve Drawing Appendix K Procedure Chart for Design Selection of Asphalt Concrete Pavement Structure Overlay Course Appendix L Technical Requirements for Petroleum Asphalt of Heavy Traffic Road Appendix M Technical Requirements for Modified Asphalt Appendix N Segregation Test of Modified Asphalt Explanation of Wording in the Specifications