SAKRETE Sand Mix

30 KG (66 lb) yields approximately 0.014 m³ (1/2 ft³). A slab 1.1 m2 (12 ft²) at 1.3 cm (1/2 in) thickness requires 30 KG (66 lb).

Concrete must be fully cured (approximately 28 days) and dry before painting. Refer to paint manufacturer directions for application instructions.

Curing means maintaining proper moisture and temperature. Allow newly placed material to set until the surface is hard to the touch. SAKRETE Sand Mix will set in approximately 6 hours. Then keep material damp or cover with plastic to prevent evaporation of mix water for at least three (3) days. Protect from freezing for at least 24 hours. Can be open to foot traffic in 24 hours.

After mixing, work the SAKRETE Sand Mix into the crack with a rod or stick then level the surface with a straight edge. Finish as desired.

Stress control joints are placed to control where slabs crack, along a predetermined path. Use either a hand jointer while the mix is soft or saw cut 6 to 18 hours after hardening. The joint should be 1/5 of the full thickness of the slab and every 8 ft (2.4 m) in both directions. Adjust down for appearances (centring). Should the repair overlay be placed over an existing concrete joint or break, it is important to tool a joint into the soft mix over the existing joint or break. Use a jointer tool to form a joint half the depth of the repair.

Use an edger tool to finish edges.

For a textured surface use a broom or brush.

It is recommended to use a wood, magnesium, or aluminum float trowel for a smooth surface. 

After bleed water evaporates, finish as desired. Finishing cementitious materials too early, or overworking the materials can cause dusting, cracking, scaling, and a weak surface.
 

After mixing, place and consolidate inside the area. Level, moving a straight-edged board in a sawing motion across SAKRETE Sand Mix, removing any excess and filling low areas. Allow freshly placed material to set or until the surface bleed water evaporates before finishing. Time will vary with weather conditions.

Add approximately 4 L (4.25 qt) of clean water per 30 KG (66 lb) bag or enough to achieve a workable mix. Avoid a soupy mix. Excess water reduces strength and durability and can cause cracking. In cold weather, use warm water to accelerate the set. In hot weather, use cold water to slow the set.

Yes, empty contents of the bag into mortar box, wheelbarrow, or mechanical mixer. When mixing by hand, form a crater for adding water.

Surfaces to be repaired must be sound and clean. Remove all delaminated or unsound concrete by chipping with a hammer and chisel or using a stiff wire brush. Clean the area to be repaired with potable water, leaving the concrete saturated but free of standing water. Some very porous concretes may require several applications of water to ensure complete saturation. If required, construct forms around the old sidewalk or slab. Use a level to ensure the forms are set at the correct height and there is adequate slope for water drainage. For best results, apply SAKRETE Concrete Adhesive to the existing dampened substrate before pouring.

Mix and substrate temperatures should be maintained between +5 °C and +30 °C (40 °F and 86 °F) for at least 24 hours prior to and 48 hours after.

Ideal for thin applications from 1.3 cm (1/2 in) to 5 cm (2 in) in thickness.