ARDEX K 520™ Self-Leveling Concrete Toping

ARDEX K 520™ is a self-leveling, topping for fast-track resurfacing, smoothing or leveling of indoor concrete and certain non-porous surfaces. ARDEX K 520 can be installed up to 1″ (25 mm) thick neat and up to 3″ (7.5 cm) thick with the addition of appropriate aggregate (see Technical Data section for minimum installation thicknesses by application).

Key Features

A blend of Portland cement and other hydraulic cements
Resurface indoor concrete and certain non-porous surfaces
Walk on in 2 – 3 hours, seal in as little as 24 hours
Polish in as little as 24 hours
Use for interior floors only

Standards

Tested in accordance with ASTM C1708

Specification

Installation
Mixing Ratio: 5 quarts (4.73 L) of water per 50 lb. (22.7 kg) bag
Coverage: 25 sq. ft. per bag at 1/4” (2.4 sq. m at 6 mm)
16.7 sq. ft. per bag at 3/8″ (1.6 sq. m at 9.5 mm)
12.5 sq. ft. per bag at 1/2” (1.2 sq. m at 12 mm)
Performance
Flow time: 10 minutes
Compressive strength (ASTM C109/mod – air cure only): 6,000 psi (420 kg/sq. cm.) at 28 days
Flexural strength (ASTM C348): 1,200 psi (84 kg/sq. cm.) at 28 days
Walkable: 2 – 3 hours
Min. Cure Time prior to coating: Waterborne: 24 hours
Solvent-borne and 100% solids (less than 20 mils/0.5 mm): 48 hours
High build polymer coating (greater than 20 mils/0.5 mm): 7 days
VOC: 0
Packaging: 50 lb. (22.7 kg) net weight bag
Storage: Store in a cool, dry area. Do not leave bags exposed to sun.
Shelf life: Nine months, if unopened
Warranty: ARDEX L.P. Standard Limited Warranty applies.
For complete product technical information, click on the Downloads tab and open the Technical Data download.

Technical specification

Unique ref.ARDEX-K-520
Product familyARDEX Surfaces
Product groupOverlays and Toppings
TypeObject (single object)
Date of publishing2024-02-21
Edition number1

Links

Product urlhttps://www.ardexamericas.com/product/ardex-k-520/
Instruction videohttps://youtu.be/3GhxmUzeoqM
Technical descriptionhttps://ardexamericas2.wpenginepowered.com/wp-content/uploads/2018/05/ARDEX-K-520-Technical-Data-1.pdf

Classification

BIMobject CategoryFlooring - Underlay
IFC classificationFloor
UNSPSC nameCarpet or rug underlays
UNSPSC code30161719
Uniclass 2015 CodePr_35_31_06_80
Uniclass 2015 DescriptionSmoothing and levelling underlay compounds
CSI MasterFormat 2014 Code06 16 26
CSI MasterFormat 2014 TitleUnderlayment
OmniClass Number23-15 17 11 13 11 13
OmniClass TitlePortland Cement Floor Underlayments
CSI UniFormat II CodeB1010
CSI UniFormat II TitleFloor Construction

Region availability

North America
Anguilla
Antigua and Barbuda
Aruba
Barbados
Belize
Bermuda
British Virgin Islands
Canada
Caribbean Netherlands
Cayman Islands
Collectivity of Saint Martin
Costa Rica
Cuba
Curaçao
Dominica
Dominican Republic
El Salvador
Greenland
Grenada
Guadeloupe
Guatemala
Haiti
Honduras
Jamaica
Martinique
Mexico
Montserrat
Nicaragua
Panama
Puerto Rico
Saint Kitts and Nevis
Saint Lucia
Saint Pierre and Miquelon
Saint Vincent and the Grenadines
Saint-Barthélemy
Sint Maarten
The Bahamas
Trinidad and Tobago
Turks and Caicos Islands
U.S. Virgin Islands
United States