Study on Thermal Stresses in Continuously Reinforced Concrete Pavement

Nishizawa, Tsutomu; Shimeno, Shigeru; Komatsubara, Akinori; Koyanagawa, Masashi

doi:10.3141/1629-12

Cited by 14 publications

(3 citation statements)

References 2 publications

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“…It is the concrete pavement layer that is of concern about, as cracks are the crucial factors that determine its performance. The structural design of CRCP includes the amount of steel bar reinforcement to control the length and formations of transverse cracks, the location of the steel bars, and the slab thickness to resist traffic loads (Nishizawa et al 1998). Procedures had long been established regarding how to predict the width and spacing of transverse crack (Sato, Hachiya, and Kawakami 1989), which are often incorporated into the specification of national standards for concrete pavement design.…”

Section: Bondmentioning

confidence: 99%

Numerical Modelling of Structural Behaviour of Continuously Reinforced Concrete Pavement

Lai¹

2018

Preprint

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Continuously reinforced concrete pavement (CRCP) rapidly becomes a common standard in most highway pavement design due to its high performance. Early-age cracks play a crucial role in characterising CRCP's long-term performance, hence crack formations and patterns are of interest in most highway departments. The design parameters of a CRCP are studied in this work as a parametric study on efficient design configuration. Numerical experiments were performed to produce a stress profile induced by crack initiation and long-term traffic load. This work contributes a probabilistic study on crack pattern formation from typical stress profile, including environmental and shrinkage stress, as an insight into predicting the likelihood of crack patterns initiation and propagation along the depth of the concrete slab. Studies also showed transverse steel bar plays a crucial role in determining the location of the crack formation, but a minimal effect in controlling crack width and deflection. A study on the probabilistic model helps pavement design to produce a desirable crack pattern, to perform controlled-cracks that enhance the vertical load transferability of a cracked CRCP.

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Section: Bondmentioning

confidence: 99%

Numerical Modelling of Structural Behaviour of Continuously Reinforced Concrete Pavement

Lai¹

2018

Preprint

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“…In a Japan survey [17], it was developed a relational model between LTE and the joint opening for pavements with and without BT. The authors noted that in the case of BT presence, the opening has little influence on the LTE value compared to the case of concrete pavements without BT.…”

Section: Load Transfer Measures In Jointsmentioning

confidence: 99%

Efeito das variações de temperatura na transferência de cargas em juntas de pavimentos de concreto

Colim¹,

Balbo²,

Khazanovich

2011

Rev. IBRACON Estrut. Mater.

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Medidas de deflexões com o falling weight deflectometer permitiram a avaliação do comportamento de juntas em pavimentos de concreto simples do ponto de vista de sua eficiência de transferência de cargas (LTE). As investigações mostraram importantes variações nesse parâmetro, quando não há dispositivos de transferência de cargas, entre horários de dias bem como entre estações climáticas distintas (inverno e verão); enquanto que juntas com barras de transferência apresentam, pouca variação nesse parâmetro e encontrando-se em geral entre 90 e 100% de capacidade de transferência, quando há quedas de temperatura, as juntas sem barras chegam a apresentar capacidade de transferência reduzida para 50% no inverno e para 60% no verão. Valores estimados de transferência de carga com um programa de elementos finitos permitiram confirmar a necessidade de tratamento teórico do problema em fases de análise estrutural e projetos de pavimentos de concreto com juntas.

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“…Generally, continuously reinforced concrete pavements (CRCPs) exhibit good performance when the bearing capacity of the underlying layers is sufficient [2][3][4][5][6]. As shown in Figure 1, lean concrete, mainly used as a subbase for concrete pavements in Republic of Korea, has a relatively high bearing capacity, providing appropriate conditions for CRCPs [7].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Continuously Reinforced Bonded Concrete Overlay Pavements Using the Concrete Damaged Plasticity Model

2023

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In this study, cracking patterns and widths were analytically investigated in a continuously reinforced bonded concrete overlay (CRBCO), as they developed due to temperature change and drying shrinkage, as the environmental load for the sustainable management of deteriorated concrete pavements. The parameters of the concrete damaged plasticity (CDP) model used for the nonlinear finite element analysis (FEA) of the continuously reinforced concrete pavement were determined through comparison of the FEA results with the field crack survey results so as to be used in the nonlinear FEA of the CRBCO pavement. The total temperature change, which combines the actual temperature change with the temperature change converted from the drying shrinkage, considering stress relaxation, was adopted in the FEA as the environmental load applied to the CRBCO pavement. The locations and movements of the reflection and transverse cracks in CRBCO were investigated via FEA. The reflection cracks occurred in the overlay at all of the joints of the existing pavement. Only one secondary crack, with a width that was 5–6 times narrower than that of the reflection cracks, occurred between adjacent reflection cracks under various conditions. Thus, the crack width of the CRBCO was predominantly affected by joint movement in the existing pavement. In addition, the crack widths predicted by the CDP model were narrower than those predicted using the elastic model by approximately 10%. Therefore, crack movement in a CRBCO pavement can be reasonably predicted by the CDP model.

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Study on Thermal Stresses in Continuously Reinforced Concrete Pavement

Cited by 14 publications

References 2 publications

Numerical Modelling of Structural Behaviour of Continuously Reinforced Concrete Pavement

Numerical Modelling of Structural Behaviour of Continuously Reinforced Concrete Pavement

Efeito das variações de temperatura na transferência de cargas em juntas de pavimentos de concreto

Finite Element Analysis of Continuously Reinforced Bonded Concrete Overlay Pavements Using the Concrete Damaged Plasticity Model

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