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Dong Sheng Zhang

Bio: Dong Sheng Zhang is an academic researcher. The author has contributed to research in topics: Slab & Asphalt. The author has an hindex of 1, co-authored 2 publications receiving 7 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, the influence of a sliding layer on the CTCP structure was studied using both finite element analysis and analytical solutions, and it was shown that the sliding layer with a smaller initial (before final post-tensioning) COF can reduce the stresses caused by wheel and thermal load while maintaining the prestress in the concrete pavement slab.
Abstract: In order to reduce the number of transverse joints and improve the cracking resistance of Portland cement concrete pavement, a series of diagonally arranged prestressed tendons are applied in the pavement slab, defined as cross-tensioned concrete pavement (CTCP). However, the reduction in the number of transverse joints causes additional stresses and deformations within the CTCP slab which cannot be addressed by only increasing the level of prestress applied to the slab. It is necessary to lay a well-designed sliding layer between the base and the CTCP slab to reduce the stresses and deformations. The influence of coefficient of friction (COF) of a sliding layer on the CTCP structure was studied using both finite element analysis and analytical solutions. Results show that the sliding layer with a smaller initial (before final post-tensioning) COF can reduce the stresses caused by wheel and thermal load while maintaining the prestress in the CTCP slab. Larger long-term (after final post-tensioning) COF of...

10 citations

Journal ArticleDOI
TL;DR: A coefficient of friction tester for the cross-tensioned prestressed concrete pavement (CTCP) sliding layer was designed and developed basing on the Amonton law.
Abstract: A coefficient of friction tester (CFT) for the cross-tensioned prestressed concrete pavement (CTCP) sliding layer was designed and developed basing on the Amonton law. The CFT can obtain precise values of the CTCP sliding layer coefficient of friction. Meanwhile, the sand and polyethylene plastic film (SPPF) sliding layer which has already been used in CTCP experimental road was tested using the CFT. The best testing speed (1mm/min) for CFT was obtained with applying regression analysis method to the results. The optimum material parameters for the SPPF are the combination of 2.6 fineness modulus of sand, 10mm thickness of sliding layer, and 3 μm thickness of polyethylene plastic film (PPF). The optimum materials combination of the SPPF provides minimum coefficient of friction to the CTCP sliding layer which can reduce the stress and deformation of the CTCP slab.

1 citations

Journal ArticleDOI
TL;DR: In this paper , a three-dimensional meso-structure discrete element model of asphalt pavement was generated with the FISH programming language and its mesomechanical response under vehicle load was analyzed.
Abstract: Numerical simulation is an effective way to study the mechanical response of asphalt pavement, which is very important for the pavement structural design. In this study, a three-dimensional meso-structure discrete element model of asphalt pavement was generated with the FISH programming language and its meso-mechanical response under vehicle load was analyzed. The contact forces within the asphalt pavement, in asphalt mastic, in coarse aggregates and between asphalt mastic and coarse aggregates were studied. The results of the study show that the contact forces within the asphalt mixture are highly uneven. The number of contact points in coarse aggregates account only for about 10% of all contact points while the sum of the contact forces in coarse aggregates contributes to over 50% of all contact forces. This demonstrates that the coarse aggregates bear most of the vehicle load. The average normal contact force in coarse aggregates is about 5 N and the average tangential contact force in coarse aggregates is about 2 N. The modeling results provide a quantitative understanding of the distribution of loading in asphalt pavement.

1 citations


Cited by
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Journal Article
TL;DR: Procedure theorique reliant charges, epaisseur du revetement et resistance du beton, elaboree suite a une enquete sur 2000 km de routes revetues en beton aux Philippines as mentioned in this paper.
Abstract: Procedure theorique reliant charges, epaisseur du revetement et resistance du beton, elaboree suite a une enquete sur 2000 km de routes revetues en beton aux Philippines

32 citations

Journal ArticleDOI
TL;DR: In this article, the authors proposed an oblique prestress concrete pavement, in which prestressed tendons were distributed with an angle to the road direction so that the prestress can be applied in both the transverse and longitudinal directions.
Abstract: Prestressed concrete pavement can reduce slab thickness, eliminate transverse joints and enhance durability compared to traditional concrete pavement. Traditional prestressing or precast prestressing in the longitudinal direction requires additional space for anchorage and adds more joints. This study proposed an oblique prestress concrete pavement, in which prestressed tendons were distributed with an angle to the road direction so that the prestress can be applied in both the transverse and longitudinal directions. The detailed design of the oblique prestress concrete pavement, including the selection of raw materials, design of cement concrete, anchorage area, size and distribution of prestressed tendons, stress analysis within the concrete slab, sliding layer, side reinforcement, and regular reinforcement at top and bottom are all included in this study. The slab thickness, diameter, distribution angle, and spacing of tendons were obtained based on the stress analysis to meet the requirement of fracture criteria and fatigue criteria. A demonstrative road pavement section, which has performed well after three years of traffic opening, was constructed according to the design. A step-by-step description of the construction was also presented in the study.

13 citations

01 Jan 2002
TL;DR: In this paper, the revised justifications, features and main contents in newly issued Specifications of Cement Concrete Pavements Design for Highway are introduced in this paper, which takes two years to complete.
Abstract: The revision of Specifications of Cement Concrete Pavement Design for Highway, which takes two years, has already completed The revised justifications, features and main contents in newly issued Specifications of Cement Concrete Pavements Design for Highway are introduced in this paper

10 citations

Journal Article
TL;DR: In this article, the dielectric properties of pavement structural layer by using radar images were studied. And it has been found that there is a close relationship between the density of the pavement structure layer material and the gross volume, and that the value of the value may be affected by changes in the relative density of hair volume.
Abstract: This paper aims to study the dielectric properties of pavement structural layer by using radar images. Asphalt cement mixture was taken as a case study to analyze the dielectric properties of the pavement structure layer material. The results show that it has been found through research that there is a close relationship between the dielectric properties of the pavement structure layer material and the gross volume, and the value of the dielectric constant may be affected by changes in the relative density of the hair volume. Therefore, the radar image has a certain applied research value in the dielectric properties of the pavement structure layer materials, and it is worthy of reference of relevant parties.

5 citations

Journal ArticleDOI
Hongduo Zhao1, Mengyuan Zeng1, Hui Chen1, Jianming Ling1, Difei Wu1 
TL;DR: Prestress force loss is crucial to the structural performance of cross-tensioned concrete pavement (CTCP) as discussed by the authors, and severe loss in prestress force will reduce the constricting-cracking capacity of the CTCP.
Abstract: Prestress force loss is crucial to the structural performance of cross-tensioned concrete pavement (CTCP) Severe loss in prestress force will reduce the constricting-cracking capacity of the CTCP,

4 citations