1. ÍNDICE “Maintenance Practices and Standards on Pavements at Mexican Airports” MScE Rodolfo Téllez Gutiérrez 6th Symposium on Pavement Surface Characteristics Portoroz, Slovenia, Europe October 20th to 22nd, 2008

2. INTRODUCTION SOP, SAHOP, S.C.T. SCT – ASA SCT – DGAC Concessioned Airports Groups Dirección General de Aeropuertos. Desing and construction of airports, major and specialized maintenance, until 1988. 26.- Aeropuertos y Servicios Auxiliares. Operation and Administration, minor maintenance, remodeling, enlarging. 85.- Dirección General de Aeronáutica Civil. Laws, Rules of Aircraft Operations, Licenses for Pilots, Official permits and regulations, etc. 35.- AICM, GAP, OMA, ASUR.

3. Mexican Airports Infraestructure 2008

4. Special problems Mu-meter Bonded rubber

5. Special problems Hydroplanning effect on Airports Pavements during heavy rain. Coefficient of friction very critical. Hveem California

6. Special problems Grooving System

7. New Mexican proposal for Coefficient of Friction AIRPORT PAVEMENT SURFACES Measurementson all the Runway length a) Once a year evaluation b) (1) in Center Line c) (4) at 3 and 6 m on each side d) Method ASTM E 670 e) Equipment Mu-Meter or similar Minimum C.F. values New Mexican Proposal 2007 Speed Test (Km/h) Tire Pressure (k Pa) Wet Surface (mm) C. F. minimun New or Overlayed Pavement Program of correct. maint. Warning level notice 65701,00,720,520,42 95701,00,660,380,26 BREAKING EFFICIENCY Coeff. of FrictionEfficiencySafety 0,50 or moreGood √ 0,40 to 0,49Fair √ 0,30 to 0,39Poorunsafe Less than o,30Badunsafe Key Notes: 1)Until now, the official value for C. F. is 0,5 min (wet and dry) 2)The new proposal (2007) is in discussion and when approved (2008) will require for all Airports minimum values of 0,66 and 0,72 for wet pavement critical condition.

8. PROFILE INDEX ACCORDING TO THE NEW MEXICAN STANDARDS FOR HIGHWAYS NEW HIGHWAYS Profile index (cm/km) Bonus/Penalty Factors 4,0 ó menos Bonus + 0,05 4,1 A 5,5+ 0,04 5,6 A 7,0+ 0,03 7,1 A 8,5+ 0,02 8,6 A 10,0+ 0,01 10,1 A 14,0 0 14,1 A 16,0 Penalty ­0,02 16,1 A 18,0­0,04 18,1 A 20,0­0,06 20,1 A 22,0­0,08 22,1 A 24,0­0,10 More than 24,0Corrective maintenance Norma N.CSV. CAR.3.02.005.04 EXISTING HIGHWAYS Profile index (cm/km) Bonus/Penalty Factor 10,0 o menos Bonus + 0,05 10,1 A 14,0+ 0,04 14,1 A 18,0+ 0,03 18,1 A 22,0+ 0,02 22,1 A 26,0+ 0,01 26,1 A 31,00 31,1 A 34,0 Penalty ­0,02 34,1 A 37,0­0,04 37,1 A 40,0­0,06 40,1 A 43,0­0,08 43,1 A 46,0­0,10 More than 46,0Corrective maintenance

9. New Mexican proposal for Profile Index AIRPORT PAVEMENT Measurements on all the Runway length: a.- (1) in Center Line b.- (10) at 2, 4, 6, 8 and 10 meters on each side covering 20 m width c.- Once a year evaluation Standard or Specification Proposed Value Average P. I. (cm/km) Year New Pavements (Runways)max 10,02007 Existing Pavementsmax 15,02007 More than 15,0Pavement must be treated with corrective maintenance. Key Notes: 1) Until 1990, the official standard in Mexico had a maximum Value of P. I. = 30 inch/mile (47 cm/Km) 2) From 1992, the standard value was improved requiring a maximum P. I. = 15 inch/mile (24 cm/Km) 3) The new mexican proposal (2007) now in study and discussion, we expect to have it approved along 2008 and will require for all medium and large airports a maximum “Profile Index of 10,0 and 15,0 cm/Km”

10. AICM Land operation (near of saturation)

11. AICM Actual Layout

12. AICM Longitudinal non-uniform settlements history

13. AICM Compensated Pavement Section

14. AICM Compensated Pavement Section works for the first runway

15. AICM Proposed layout

16. THANKS FOR YOUR ATTENTION ! MScE Rodolfo Téllez Gutiérrez rtellez@imt.mx www.imt.mx