Introduction. The introduction to the paper discusses the need for curing of the road pavement concrete and outlines contemporary technologies for curing processes.
Problem statement. The topic of the paper concerns the criteria for implementing two-stage or single-stage curing of the concrete of a road pavement and the use of combined products based on curing compounds to create the isotropic surface texture.
Purpose. The purpose of the paper is to analyze the regimes and elements of curing of the road pavement concrete, in particular these using combined products with a curing compound, as well as the quantitative criteria approved in the world-wide practice for the curing regime selection.
Results. The influence of curing, in the plastic state of concrete and at the stage of gaining strength, on the structure and properties of concrete is analyzed and the special practical significance of curing of slipformed concrete pavements is shown.
The modes and elements of initial curing are considered and the most significant components of initial curing for large projects are highlighted. The quantitative criteria used for the purpose of initial curing of the road pavement concrete are analyzed.
The modes and elements of single-stage curing, which can be approved for final curing in the case of two-stage technology, are also analyzed. The characteristics of curing compounds, determined by standard methods, are considered.
The use of surface retarders as a combined product with a curing compound to create an isotropic macrotexture on the surface of a concrete pavement is briefly discussed.
Conclusions. Conclusions were stated regarding:
- practices for prescribing two-stage curing of the road pavement concrete;
- quantitative criteria for determining regimes for curing of the road pavement concrete;
- practices for curing of the road pavement concrete using curing compounds;
- technologies using combined products based on curing compounds to create an isotropic macrotexture of the road pavement surface.
Keywords: concrete pavement, curing, curing compound, exposed aggregate concrete surface, road pavement, stages of curing.
