Rapid drying pre-blended screeding and screed repair mortar, containing one part ARDEX A 35 quick drying cement and four parts, by weight, of screeding sand, requiring only the addition of water.

Features and benefits:

It's pre-blended so just add water.
Can be used to produce bonded, unbonded or floating screeds and will be dry after 24 hours at 20°C to receive floor finishes, regardless of thickness.
Pre-blended with graded sand for convenience - just add water.
Walkable in three hours.
Receives ceramic and natural stone tiles directly after 24 hours.
Install carpet, wood and vinyl floorcoverings after 24 hours, or just four hours for carpet and vinyl when smoothed with ARDEX A55.
Passes BRE Screed (ISCR) Testing after six hours.
After just one day, achieves the acceptable minimum compressive and tensile bending strengths attained by an ordinary cement, screed after 28 days.
Can be used with underfloor heating systems.
Weight of fresh mortar: Approximately 2 kg/L.
Walkability 20°C: Approximately three hours.
Compressive Strength (DIN 1164): After one day: 25.0 N/mm², After 3 days: 32.0 N/mm², After 28 days: 40.0 N/mm².
Tensile Bending Strength (DIN 1164): After one day: 5.0 N/mm², After three days: 6.0 N/mm², After 28 days: 7.0 N/mm².

Thickness:

When used as a repair mortar ARDEX A 35 MIX can be applied to the full thickness of the existing screed. When applied as a new screed, application at the following thicknesses is recommended:

Bonded screeds: Minimum 15 mm, (design thickness up to 40 mm).
Unbonded screeds: Minimum 40 mm.
Floating screeds: Minimum 75 mm (Minimum 65 mm in lightly loaded (domestic) locations).
Screed repairs: Can be applied to the full thickness of the existing cement/sand screed.

ARDEX A 35 MIX Environmental Product Declaration (EPD)