vdw 400 plus

vdw 400 plus ZementfugenMörtel Color is a cementitious, polymer-modified, fast-hardening joint mortar for jointing natural and concrete stone paving, for interior and exterior use. Easy application without pre- or post-treatment agents. vdw 400 plus Color can be used, for example, to pave the patio and the garage driveway as well as a joint mortar for roads.

• high freeze/de-icing-salt resistance
• highly flowable
• self-compacting
• compressive strength approx. 50 MPa
• MPA-tested

Application

Requirements Stable, load-bearing substrate, joint depth full paver height (min. 20 mm), joint width min. 3 mm, better 5 mm, max. 25 mm, object temperature ≥ 5 °C, max. 25 °C.

Tools Free-fall mixer, ideally a forced-action mixer, a stirrer suitable for small areas, water hose, adjustable spray nozzle or fan nozzle, rubber squeegee, scrubber, sponge board, roller washing set or washing machine.

Test area Cement-based joint mortars are subject to the natural ageing process. The reaction speed must therefore be checked before jointing. With natural and concrete stone paving, contact between vdw 400 plus Color and the stone surface may cause visual changes. In general we recommend laying out a test area.

Pre-wetting Pre-wet the areas. With natural stones with a rough surface, cast concrete stones or absorbent pavers, the surface must be pre-wetted very intensively before applying vdw 400 plus Color. Standing water in the joints must be avoided.

Mixing the joint mortar Place 4.5 to 5.0 l of water per 25 kg bag in a clean mixing vessel. Add vdw 400 plus Color and mix for approx. 2 minutes into a homogeneous, slurryable mortar.

Filling the joints Apply the mortar to the surface and pull it across the paving over the full area with a rubber squeegee, working it intensively into the joints. Introduce the mortar so that the joint cross-section is completely filled.

Cleaning Caution: avoid excessive hardening of the jointing material on the stone surface. After sufficient hardening time (after approx. 25 min at 20 °C), wash the paving cleanly diagonally to the joint cross-section, without washing out the joints. Walkable after 4 to 6 hours. After approx. 48 hours drivable with cars, fully loadable after 7 days.