Damaging Effect of Armoured Vehicles with Rubber Tires on Flexible Pavement (original) (raw)

Damaging Effect of Static and Moving Armoured Vehicles with Rubber Tires on Flexible Pavement

The damaging effect of military armoured vehicles with rubber tires on flexible pavements was studied. Two types of military armoured vehicles with rubber tires were considered, namely CM32 four-axle and CM32 triple-axle. A measure of the damaging effect of military armoured vehicles with rubber tires loads was achieved by correlating their equivalent loads with the AASHTO equivalency factors. The equivalent load was developed on the basis of mechanistic-empirical approach. It was found that the damaging effect of the studied loads of CM32 four-axle military armoured vehicle with rubber tires is 0.262-2.853 times the damaging effect of the standard 18 kips (80 kN) axle load depending on the thickness of asphalt layer. It was found that the damaging effect of the studied loads of CM32 triple-axle military armoured vehicle with rubber tires is 0.933-4.880 times the damaging effect of the standard 18 kips (80 kN) axle load depending on the thickness of asphalt layer. It was found that the damaging effect of the braking forces of CM32 four-axle military armoured vehicle with rubber tires is 40 times the damaging effect of the CM32 four-axle military armoured vehicle weight only. It was found that the damaging effect of the braking forces of CM32 triple-axle military armoured vehicle with rubber tires is 5 times the damaging effect of the CM32 triple-axle military armoured vehicle weight only.

Damaging Effect of Armoured Vehicles with Rubber Tires.pdf

Presented in this paper is a new study of the damaging effect of military armoured vehicles with rubber tires on flexible pavements. Two types of military armoured vehicles with rubber tires were studied, namely LAV-AT four-axle and LAV-300 triple-axle. A measure of the damaging effect of military armoured vehicles with rubber tires loads was achieved by correlating their equivalent loads with the AASHTO equivalency factors. The equivalent load was developed on the basis of mechanistic - empirical approach. It was found that the damaging effect of the studied military armoured vehicles with rubber tires loads is 0. 0.200 to 4.736 times the damaging effect of the standard 18 kips (80 kN) axle load depending on the thickness of asphalt layer. Keywords: military armoured vehicles, four-axle, triple-axle AASHTO equivalency factors, flexible pavements, and damaging effect.

New AASHTO Equivalency Factors of Armoured Vehicles with Rubber Tires on Flexible Pavement

Presented in this paper is a study to find new AASHTO equivalency factors of military armoured vehicles with rubber tires on flexible pavement. Four types of military armoured vehicles with rubber tires were studied, namely Stryker, CM31, Cougar Ridgback, and HMMWV. A measure of the damaging effect of military armoured vehicles with rubber tires was achieved by correlating their equivalent loads with the AASHTO equivalency factors. The equivalent load was developed on the basis of mechanistic-empirical approach. It was found that the damaging effect of the studied military armoured vehicles with rubber tires is 0.017 to 6.87 times the damaging effect of the standard 18 kips (80 kN) axle load depending on the thickness of asphalt layer.

Damaging Effect of Tracked Armoured Vehicles on Flexible Pavement

Presented in this paper is a new study of the AASHTO equivalency factors of military tracked armoured vehicles on flexible pavement. Two types of military tracked armoured vehicles were studied, namely Challenger 2 tank and MT-LB-T tracked armoured vehicle. A measure of the damaging effect of military tracked armoured vehicle loads was achieved by correlating their equivalent loads with the AASHTO equivalency factors. The equivalent load was developed on the basis of mechanistic-empirical approach. It was found that the damaging effect of the studied military tracked armoured vehicle loads is 0.039 to 5.750 times the damaging effect of the standard 18 kips (80 kN) axle load depending on the thickness of asphalt layer. It was found that the damaging effect of military tracked armoured vehicle loads on flexible pavements of major highways and main principal roads is much more than its damaging effect on the flexible pavement of local and secondary roads. It was found also, that tracked armoured vehicles have a severe damaging effect on the functional serviceability of surface asphalt layer in terms of deformation and strains due to the effect of rigid track chain.

Damaging effect of moving military vehicles on asphalt pavement-experimental study

The damaging effect of military vehicles (either tracked or with rubber tires) on asphalt pavements was investigated. Different types of military vehicles were considered, namely tanks, rubber-tire armoured vehicles with four, tridem, and two axles. The estimation of the damaging effect of military vehicles loads was achieved by correlating their equivalent loads to the AASHTO equivalency factors. The equivalent load was developed on the basis of mechanistic-empirical approach. An experimental field study was conducted to investigate the reliability of previous theoretical analyses. Benkelman beam and plate bearing tests were carried out at local road section to measure the strength properties of pavement structure and the deflection under simulated military vehicle loads. The results of field tests supported the mechanistic-empirical results which showed that the damaging effect of the studied military vehicle loads can reach up to 20 times the damaging effect of the standard 18 kips (80 kN) axle load depending on the thickness of asphalt layer. The results of the braking forces damaging effect of military vehicles which are as high as 40 times the damaging effect of the military vehicle due to weight only were examined too.

Damaging Effect of Static and Moving Armoured Vehicles with.pdf

The damaging effect of military armoured vehicles with rubber tires on flexible pavements was studied. Two types of military armoured vehicles with rubber tires were considered, namely CM32 four-axle and CM32 triple-axle. A measure of the damaging effect of military armoured vehicles with rubber tires loads was achieved by correlating their equivalent loads with the AASHTO equivalency factors. The equivalent load was developed on the basis of mechanistic - empirical approach. It was found that the damaging effect of the studied loads of CM32 four-axle military armoured vehicle with rubber tires is 0.262-2.853 times the damaging effect of the standard 18 kips (80 kN) axle load depending on the thickness of asphalt layer. It was found that the damaging effect of the studied loads of CM32 triple-axle military armoured vehicle with rubber tires is 0.933-4.880 times the damaging effect of the standard 18 kips (80 kN) axle load depending on the thickness of asphalt layer. It was found that the damaging effect of the braking forces of CM32 four-axle military armoured vehicle with rubber tires is 40 times the damaging effect of the CM32 four-axle military armoured vehicle weight only. It was found that the damaging effect of the braking forces of CM32 triple-axle military armoured vehicle with rubber tires is 5 times the damaging effect of the CM32 triple-axle military armoured vehicle weight only. Key Words: Military Armoured Vehicles, Fouraxle, Triple-axle AASHTO Equivalency Factors, Flexible Pavements, Braking Forces and Damaging Effect.

New AASHTO Equivalency Factors of Tracked Armoured Vehicles on Flexible Pavement.pdf

Presented in this paper is a study to find new AASHTO equivalency factors of military tracked armoured vehicles on flexible pavement. Two types of military tracked armoured vehicles were studied, namely M1A1 tank and M113A3. A measure of the damaging effect of military tracked armoured vehicle loads was achieved by correlating their equivalent loads with the AASHTO equivalency factors. The equivalent load was developed on the basis of mechanistic - empirical approach. It was found that the damaging effect of the studied military tracked armoured vehicle loads is 0.016 to 19.4 times the damaging effect of the standard 18 kips (80 kN) axle load depending on the thickness of asphalt layer. It was found that the damaging effect of military tracked armoured vehicle loads on flexible pavements of major highways and main principal roads is much more than its damaging effect on the flexible pavement of local and secondary roads. It was found also, that tracked armoured vehicles have a severe damaging effect on the functional serviceability of surface asphalt layer in terms of deformation and strains due to the effect of relatively rigid track chain. Key Words: Military Tracked Armoured Vehicles, AASHTO Equivalency Factors, Flexible Pavements, and Damaging Effect.

Damaging effect of moving military vehicles on asphalt pavement- experimental study.pdf

The damaging effect of military vehicles (either tracked or with rubber tires) on asphalt pavements was investigated. Different types of military vehicles were considered, namely tanks, rubber-tire armoured vehicles with four, tridem, and two axles. The estimation of the damaging effect of military vehicles loads was achieved by correlating their equivalent loads to the AASHTO equivalency factors. The equivalent load was developed on the basis of mechanistic - empirical approach. An experimental field study was conducted to investigate the reliability of previous theoretical analyses. Benkelman beam and plate bearing tests were carried out at local road section to measure the strength properties of pavement structure and the deflection under simulated military vehicle loads. The results of field tests supported the mechanistic-empirical results which showed that the damaging effect of the studied military vehicle loads can reach up to 20 times the damaging effect of the standard 18 kips (80 kN) axle load depending on the thickness of asphalt layer. The results of the braking forces damaging effect of military vehicles which are as high as 40 times the damaging effect of the military vehicle due to weight only were examined too. Keywords: Military vehicles, AASHTO equivalency factors, Benkelman beam test, Plate bearing test, Flexible pavement, and Damaging effect.

Damaging Effect of Tracked Armoured Vehicles on Flexible.pdf

Presented in this paper is a new study of the AASHTO equivalency factors of military tracked armoured vehicles on flexible pavement. Two types of military tracked armoured vehicles were studied, namely Challenger 2 tank and MT-LB-T tracked armoured vehicle. A measure of the damaging effect of military tracked armoured vehicle loads was achieved by correlating their equivalent loads with the AASHTO equivalency factors. The equivalent load was developed on the basis of mechanistic - empirical approach. It was found that the damaging effect of the studied military tracked armoured vehicle loads is 0.039 to 5.750 times the damaging effect of the standard 18 kips (80 kN) axle load depending on the thickness of asphalt layer. It was found that the damaging effect of military tracked armoured vehicle loads on flexible pavements of major highways and main principal roads is much more than its damaging effect on the flexible pavement of local and secondary roads. It was found also, that tracked armoured vehicles have a severe damaging effect on the functional serviceability of surface asphalt layer in terms of deformation and strains due to the effect of rigid track chain. Keywords: military tracked armoured vehicles, AASHTO equivalency factors, flexible pavements, and damaging effect.

New AASHTO Equivalency Factors of Armoured Vehicles.pdf

Presented in this paper is a study to find new AASHTO equivalency factors of military armoured vehicles with rubber tires on flexible pavement. Four types of military armoured vehicles with rubber tires were studied, namely Stryker, CM31, Cougar Ridgback, and HMMWV. A measure of the damaging effect of military armoured vehicles with rubber tires was achieved by correlating their equivalent loads with the AASHTO equivalency factors. The equivalent load was developed on the basis of mechanistic - empirical approach. It was found that the damaging effect of the studied military armoured vehicles with rubber tires is 0.017 to 6.87 times the damaging effect of the standard 18 kips (80 kN) axle load depending on the thickness of asphalt layer. Key Words: Military Armoured Vehicles, Rubber Tiers, AASHTO Equivalency Factors, Flexible Pavements, and Damaging Effect.