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Almost all rigid pavement is made with Portland Cement Concrete (PCC). Rigid pavements are differentiated into three major categories by their means of crack control: Jointed plain concrete pavement (JPCP)
SURFACE TO BE ROUGHENED WITH WIRE BRUSH TO GIVE TRANSVERSE LINES. Bond breaking compound. 66% light 200 pen bitumen + 14% light creosote oil + 20% solvent naphtha. The concrete shall be of C28/35. The concrete cover shall be 40mm. BASE COURSE LONGITUDINAL JOINTS (REF DWG NO: SDRE14/1/PAV3) SCALE 1:1000. 1 LANE.
The semi-rigid pavement consists two main components which are porous asphalt concrete (PAC) and the high performance polymer modified cement mortar grouting material. In Singapore, the semi-rigid pavement has been categorized under special
8 wrz 2020 · Why Joint Concrete Pavement? Other reasons we joint concrete pavements: Control Cracking Divide pavement into construction lanes or increments. Accommodate slab movements. Provide load transfer via placed dowels. Provide uniform sealant reservoir.
Construction Joints. Expansion, isolation and construction joints are created by formwork before the PCC is placed. Since these joints are designed to completely separate adjacent masses of PCC, they are usually made by inserting a small non-PCC piece of material such as a strip of wood.
PCC mix design is a laboratory process used to determine appropriate proportions and types of aggregate, portland cement, water and admixtures that will produce desired PCC properties. Typical desired properties in PCC for pavement are adequate strength, controlled shrinkage, durability, skid resistance and workability.
Table 3.15 is a summary of relevant best practices and related specification require- ments for unbonded concrete overlays. Three major practices are featured: (1) existing pavement and preoverlay repairs, (2) overlay thickness and joint details, and (3) inter- layer requirements.
