Application of Miner’s Law to the remaining service life prediction of airport cement concrete pavement

2010 ◽  
pp. 71-74
Keyword(s):  
Service Life ◽  
Life Prediction ◽  
Concrete Pavement ◽  
Service Life Prediction ◽  
Cement Concrete ◽  
Remaining Service Life ◽  
Cement Concrete Pavement

Analysis on Void Beneath Curling Slab in Rigid Base Cement Concrete Pavement and Fatigue Life Prediction

2012 ◽  
Vol 204-208 ◽  
pp. 1782-1788 ◽  
Author(s):  
Qing Zhang ◽  
Yun Chen Sun ◽  
Jing Jing Li
Keyword(s):  
Fatigue Life ◽  
Temperature Gradient ◽  
Service Life ◽  
Life Prediction ◽  
Concrete Pavement ◽  
Fatigue Life Prediction ◽  
Rigid Base ◽  
Cement Concrete ◽  
Cement Concrete Pavement ◽  
Fatigue Life Analysis

The damages in two rigid base cement concrete pavement were investigated. The data analysis suggests that the void beneath curling slab resulting from the temperature gradient changing leads to pavement damages. With the benefit of the pavement curling structure numerical model established in this article, the void changing law beneath curling slab and loading stress were analyzed. The loading stress level increases dramatically due to void occurring beneath curling slab. The calculation method of loading stress in the curling slab was given. The fatigue life analysis further reveals that the void beneath curling slab caused by temperature gradient changes is the fundamental reason for the decreasing of the service life of cement concrete pavement. The service life of investigating section were predicted and analyzed according to the fatigue life prediction model established in this article and the survey data.

Safety Assessment and Remaining Service Life Prediction of Sandwich Marine Air Bottles

2013 ◽  
Vol 456 ◽  
pp. 324-329
Author(s):  
Guan Jun He ◽  
Ai Min Diao
Keyword(s):  
Growth Rate ◽  
Fatigue Crack ◽  
Crack Growth Rate ◽  
Service Life ◽  
Life Prediction ◽  
Safety Assessment ◽  
Service Life Prediction ◽  
Theoretical Formula ◽  
Remaining Service Life ◽  
Marine Air

Based on the fatigue failure analysis of marine air bottles, the research on the safety assessment and remaining service life prediction is conducted in this paper. Particularly, the method of sandwich evaluation is obtained via sandwich characterization and the formula to calculate the fatigue crack growth rate is obtained via fatigue crack testing: three typical types of sandwich on marine air bottles are investigated, and the corresponding safety assessment results as well as the critical sandwich size are obtained. It is seen that the theoretical formula is valid, and that the air bottle can be safely used till next cycle as long as the initial sandwich angle depth less than 10°.

A Key Technique for Cement Concrete Pavement Joint Filler Construction in Chilly Regions

2012 ◽  
Vol 170-173 ◽  
pp. 3255-3259
Author(s):  
Ying Liu ◽  
Peng Peng
Keyword(s):  
Service Life ◽  
Concrete Pavement ◽  
Construction Process ◽  
Cement Concrete ◽  
Weak Spot ◽  
Performance Specification ◽  
Cement Concrete Pavement ◽  
Pavement Service Life

Cement concrete pavement joint filler construction is a weak spot. Joint filler debonding is often caused due to unnormal construction, so as to result in decreased pavement quality and reduced pavement service life. This paper describes the successful application of silicone modified polyurethane joint filler to cement concrete pavement in chilly regions, sets performance specification requirements on the filler, and improves and perfects the joint sealing construction process and later inspection technique to provide a basis for joint filler construction henceforth in chilly regions.

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