Study on Hair Crack Rubblization of the Old Cement Concrete Pavement

2013 ◽  
Vol 857 ◽  
pp. 97-104
Author(s):  
Chao Fan Wu ◽  
Xin Wang Zhang ◽  
Zhi Xin Ma
Keyword(s):  
Engineering Application ◽  
High Strength ◽  
Empirical Method ◽  
Concrete Pavement ◽  
Highway Maintenance ◽  
Cement Concrete ◽  
Mechanical Method ◽  
Specific Parameter ◽  
Cement Concrete Pavement ◽  
Construction Condition

The optimum overlay structure and the better regeneration of the old cement concrete pavement were analyzed by empirical method, which compared the merits and faults of crack-seat and rubblization with the better regeneration to the old cement concrete pavement, then the concept of hair-crack-rubblization (HCR) was put forward, specific parameter standard of HCR was calculated by mechanical method. According to the desired requirement of HCR the hair-crack-rubblization machine was produced by Xi’an Changda Highway Maintenance Technology Co., Ltd. After that concrete realizable control standards of HCR and the optimum overlay scheme were gotten by the construction condition, then the merits of high strength, stable plate, good water-resistant and so on after HCR of the old cement concrete pavement, which combines the merits of crack-seat and rubblization, were showed by the engineering application.

Research on the Contraction Joint Width of Rubberized Concrete Pavement

2011 ◽  
Vol 287-290 ◽  
pp. 436-444 ◽  
Author(s):  
Feng Qin ◽  
Zhuang Bin He ◽  
Qiong Nian Huang
Keyword(s):  
Portland Cement ◽  
Engineering Application ◽  
Concrete Pavement ◽  
Rubberized Concrete ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Joint Spacing ◽  
Cement Concrete Pavement ◽  
Contraction Joint ◽  
Portland Cement Concrete Pavement

This paper describes the calculation analysis of joint open, and the research has been carried up on Portland cement concrete pavement and rubberized concrete pavement with the consideration of hogging distortion caused by temperature, expansion deformation and drying shrinkage. Finally ,it were observed that joint open of 6m contraction joint spacing for rubberized concrete pavement is the same as 4.5m contraction joint spacing for Portland cement concrete pavement. The above analysis provides the possibility of 6-meter contraction joint spacing for rubberized concrete pavement which give theoretical basis for engineering application.

scholarly journals USE OF EXPERIENCE IN CONSTRUCTION OF MONOLITHIC CEMENT-CONCRETE PAVEMENT OF THE AIRPORT «ODESSA» IN THE DEVELOPMENT OF A NEW NATIONAL STANDARD FOR THE AIRFIELD DESIGN

2021 ◽  
pp. 100-109
Author(s):  
V.O. Kryzhanovskyi ◽  
◽  
S.O. Kroviakov ◽  
M.V. Zavoloka ◽  
V.V. Shevchenko ◽  
...  
Keyword(s):  
Service Life ◽  
High Performance ◽  
High Strength ◽  
Concrete Pavement ◽  
National Standard ◽  
Cement Concrete ◽  
Destructive Testing ◽  
Concrete Mixtures ◽  
Cement Concrete Pavement ◽  
Airport Runway

Abstract. Inspection of the monolithic cement-concrete pavement of the «Odessa» airport runway was carried out. Visual inspection of the runway surface, taxiways and apron for defects has been performed. The condition of the runway pavement was assessed as "excellent", destruction category I. In addition, strength tests of the rigid concrete pavement upper layer were carried out using non-destructive testing methods and core testing. The obtained strength characteristics correspond to the design requirements; the concrete has a grade of at least C32/40. Based on the processed data and own scientific developments, proposals were drawn up for a new standard (instead of SNyP 2.05.08-85 "Aérodromy") regarding the requirements for materials, concrete mixtures and concretes based on them for the runways construction in Ukraine. Modern requirements for monolithic cement-concrete airfield pavements require an extension of their service life up to 40 years. To ensure such indicators of serviceability, in addition to high strength indicators, it is imperative to ensure the rigid pavements durability using high-performance modified concretes. The proposals indicate the cement type, aggregates and chemical admixtures that can be used in the manufacture of concrete for airfield pavements. The requirements for the concrete and concrete mixture properties, the process of concrete curing are also presented. Taking into account the modern superplasticizers and the requirements for the workability of concrete mixtures for the construction of monolithic cement-concrete airfield pavements, the maximum W/C should be in the range of 0.3-0.35. To increase the flexural strength and crack resistance, it is desirable to use dispersed concrete reinforcement. To ensure the service life and satisfactory operational condition of the runway pavements, it is necessary to conduct an annual inspection for the timely identification and correction of arising defects.

Stress Analysis of Cement Concrete Pavement under Overweight Loads

2012 ◽  
Vol 446-449 ◽  
pp. 949-953
Author(s):  
Ya Ni Lu ◽  
Tao Li Xiao
Keyword(s):  
Finite Element ◽  
Regression Analysis ◽  
Finite Element Model ◽  
Element Model ◽  
Concrete Pavement ◽  
The Other ◽  
Tension Stress ◽  
Statistical Regression ◽  
Cement Concrete ◽  
Cement Concrete Pavement

Special load has produced serious damage to the concrete pavement because of the great gross weight and heavy axle load, but the present specification has not mentioned this kind of load. On this occasion, Several conditions of critical load are identified through ANSYS finite element model analysis and the formula through statistical regression analysis to the bottom maximum tension stress is drawn up. Which can not only guide the concrete pavement design under the special load but also the result may be referred by the other kinds of engineering.

Study on Cement Concrete Pavement Treatment Methods of Common Damage Diseases

2014 ◽  
Vol 716-717 ◽  
pp. 307-309 ◽  
Author(s):  
Zhong Gen Liu ◽  
Fu Ming Xu ◽  
Guo Bin Cao
Keyword(s):  
Disease Prevention ◽  
Concrete Pavement ◽  
Jilin Province ◽  
Fracture Dislocation ◽  
Cement Concrete ◽  
Corner Crack ◽  
Treatment Methods ◽  
Pavement Maintenance ◽  
Freeze Thaw ◽  
Cement Concrete Pavement

This paper analyzed for common diseases treatment methods for cement pavement in Jilin province seasonal freeze-thaw area, based on the analyses, disease prevention and repair methods have been put forward for water deposit, fracture, dislocation, potholes, arch, plate corner crack and uneven settlement, the research results have certain reference meanings for cement pavement maintenance.

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