6.2 INSTALLATION OF AREA No. 2

32 mm Pavers over Type S Mortar Bed with Parged Backs

6.2 A INSTALLATION PROCEDURE

The concrete slab was cleaned of foreign materials and thoroughly wetted prior to installation of pavement system. The pavement setting bed consisted of Type "S" masonry mortar (1 part portland cement to part hydrated lime to 4 parts washed sand). Thickness of the setting bed was approximately 35 mm. The granite pavers were a combination of 756 x 375 x 32 mm sawn edge units and 172 x 172 x 32 mm split edge units. All paving units had a thickness tolerance of mm. The bottom surfaces of the granite pavers were parged with neat cement (portland cement and water) mixture prior to placement on the mortar bed. The pavers were aligned and leveled maintaining 10 mm joints between sawn edges and 20 mm joints between split edges.

Joints in the west of the area were grouted with Type "N" mortar per ASTM C270 without any additives. Joints in the east of the area were grouted with Type "N" mortar that was hydrated with 50% potable water and 50% Latacrete 3701 Grout & Mortar Admixture.

6.2 B DATES

Installation of Granite Pavers: 24 August, 1994

Grouting of Joints: 01 September, 1994

Traffic allowed on Pavement: 12 September, 1994

6.2 C OBSERVATIONS:

May, 1997: Paving units appear to be in good condition with no bonding or cracking problems. There is slight deterioration of the mortar on the east of the module. The mortar on the west appears to be in good condition, but there is some erosion visible. As this area is adjacent to the gravel portion of the parking lot, a significant amount of gravel is carried onto to pavement surface. The apparent erosion of the grout is apparently due to abrasion of the gravel as the traffic drives over it.

[ previous ] [ index ] [ next ]