Excessive early early-age concrete surface moisture evaporation can be a source of key issues in the paving of concrete pavemen t, such as plastic shrinkage cracking and spalling related delamination; the use of liquid membrane membrane-forming curing compounds is one of the most prevalent methods to protect hydrating concrete surfaces...
Recent Advances and Uses of Roller Compacted Concrete Pavements in the United States
Roller Compacted Concrete (RCC) is a no slump concrete that is placed by an asphalt paver and compacted with vibratory rollers similar to asphalt pavement construction. RCC has long history of good performance as a pavement for ports, container yards, and manufacturing plants. This paper will summarize a recent survey...
Pavement Type Hysteresis and Truck Rolling Resistance
Portland Cement Concrete (PCC) pavements usually incur higher investment costs than Asphalt Concrete (AC) alternatives. In a life cycle analysis the higher cost is justified by lower maintenance costs, less and fewer traffic flow intrusions, and a longer technical life. All these factors contribute to a reduction of the carbon...
Surface Stresses of Thick Concrete Pavement Slabs Due To Traffic Loads and Non-Linear Temperature Distributions
In this study, possibility of top-down cracking in concrete pavement was investigated. The main cause of the crack is supposed to be tensile stress at the top of the concrete slab. 3DFEM simulations that took into account actual temperature distributions throughout slab depth were performed on concrete pavements for a...
Methodology for Establishing Permanent Curl/Warp Temperature Gradients in Jointed Plain Concrete Pavements
Jointed plain concrete pavements curl due to temperature gradients and warp in the presence of drying shrinkage gradients. Since this deformation is restrained by factors, such as the slab self-weight, tensile stresses are generated. Slabs do not remain flat in the absence of daily gradients. This is due to the...
Structural Modeling of Rigid Pavement with Load-rate Dependent Subgrade
It has been observed by many researchers that the subgrade behavior is load rate dependent. The apparent subgrade stiffness is much higher under the fast moving axle loading than during the slow developing temperature curling and moisture warping. However, traditionally a single k-value is used for both curling and axle...
Causes and effects of longitudinal shrinkage and temperature stresses on JPCP for Dutch conditions
In 2010 Houben has published a paper on the modelling of the process of cracking at transverse joints in jointed plain concrete pavements (JPCP). Houben uses equations from the standard Eurocode 2 for the time-dependent concrete properties and considers the thermal deformation and the shrinkage (drying and autogenous) for different...
Evaluation of the Linear Damage Assumption in JPCP Bottom-up Fatigue Cracking
Current pavement design guides for Jointed Plain Concrete Pavements define one critical location at the mid-slab edge and assume that damage accumulates linearly and can be described via S-N curves. More recently, experiments have shown that damage does not accumulate linearly and a pronounced stress range effect exists. These two...
Effect of Nonuniform Foundation Support on Concrete Slab Responses
The ability to spatially map the stiffness of the foundation layers under concrete pavements with intelligent compaction has created a need to define limits on the allowable stiffness variations in a given construction area as well as the maximum size of a non-complaint area which does not require remedial action....
Performance of Pervious Concrete Pavement in Freeze-Thaw Conditions and With Winter Maintenance [No Fines Concrete]
In 2007 the Cement Association of Canada, industry members and the Centre for Pavement and Transportation Technology at the University of Waterloo partnered to carry out a study to evaluate the behaviour of pervious concrete pavement in the Canadian climate. Field sites have been constructed and monitored and laboratory testing...
Technical and Economical Feasibility of Pavement Widenings in Cement Concrete in the Netherlands
In 2009 the Dutch Parliament amended special laws to speed up road widening projects. This situation opened possibilities for sustainable concrete pavements needing less maintenance, especially for the right-hand lane that takes the heavy traffic. This paper presents the results of a study carried out in 2009, by a working...
Temperature Changes as Decesive Loads for Concrete Slabs and Joint Sealings
Temperature changes within concrete pavements are transient. Therefore the temperature characteristics along pavement thickness are not linear and have to be split into constant, linear and equilibrium parts for further investigations. The linear temperature gradients are causing additional loading on concrete slabs, which if not considered will influence the long-term...