Índice “maintenance practices and standards on pavements at mexican airports” msce rodolfo...

ÍNDICEÍNDICE

““Maintenance Practices and Standards Maintenance Practices and Standards on Pavements at Mexican Airports”on Pavements at Mexican Airports”

MScE Rodolfo Téllez Gutiérrez

6th Symposium on Pavement Surface Characteristics6th Symposium on Pavement Surface Characteristics

Portoroz, Slovenia, EuropePortoroz, Slovenia, Europe

October 20th to 22nd, 2008

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.

Mexican Airports Infraestructure 2008

Special problems

Mu-meter Bonded rubber

Special problems

Hydroplanning effect on Airports Pavements during heavy rain.

Coefficient of friction very critical.

Hveem California

Special problems

Grooving System

New Mexican proposal for Coefficient of FrictionAIRPORT PAVEMENT SURFACES

Measurements on 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 OverlayedPavement

Program of

correct. maint.

Warning levelnotice

65 70 1,0 0,72 0,52 0,42

95 70 1,0 0,66 0,38 0,26

BREAKING EFFICIENCYCoeff. of Friction Efficiency Safety

0,50 or more Good √

0,40 to 0,49 Fair √

0,30 to 0,39 Poor unsafe

Less than o,30 Bad unsafe

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.

PROFILE INDEX ACCORDING TO THE NEW MEXICAN STANDARDS FOR HIGHWAYS

NEW HIGHWAYSProfile 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 18,0 0,04

18,1 A 20,0 0,06

20,1 A 22,0 0,08

22,1 A 24,0 0,10

More than 24,0 Corrective 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 31,0 0

31,1 A 34,0

Penalty

0,02

34,1 A 37,0 0,04

37,1 A 40,0 0,06

40,1 A 43,0 0,08

43,1 A 46,0 0,10

More than 46,0 Corrective maintenance

New Mexican proposal for Profile IndexAIRPORT PAVEMENT

Measurements on all the Runway length:

a.- (1) in Center Lineb.- (10) at 2, 4, 6, 8 and 10 meters on each side covering 20 m widthc.- Once a year evaluation

Standard or Specification

Proposed Value

AverageP. I.

(cm/km)

Year

New Pavements (Runways)

max 10,0 2007

Existing Pavements max 15,0 2007

 More than 15,0 Pavement 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”

AICMLand operation (near of saturation)

AICMActual Layout

AICMLongitudinal non-uniform settlements history

AICMCompensated Pavement Section

AICMCompensated Pavement Section works for the first runway

AICMProposed layout

THANKS FOR YOUR ATTENTION !

MScE Rodolfo Téllez Gutiérrezrtellez@imt.mx

www.imt.mx