Technical - Crack Bridging test as per ASTM 1305

As per EN 1062-1, Crack-bridging shall be determined in and classified as: 

The test temperature for the classification A1 is 23 °C. As test temperature for classes A2 to A5 -10 °C is recommended. Other test temperatures can be agreed between the interested parties, e.g. 10 °C, 0 °C, -10 °C, - 20 °C, -30 °C and -40 °C. In this case the test temperature shall be included in parentheses after the class, e.g. A4: (-20 °C).

This test method is used to indicate a waterproofing membrane's ability to maintain its integrity while bridging a preexisting crack in the substrate at low ambient temperatures, when the membrane is least likely to be flexible. 

This test method covers a laboratory procedure for determining the ability of a waterproofing membrane to bridge a crack in the substrate.

At LAB, the testing will be done as follows:

At site level also this can be tested as follows:

If no any cracks were observed, then membrane is very good to use.

Many thanks to Google.com

Acrylic modified cementitious waterproofing compound - WPM 004

Two component, acrylic modified cementitious waterproofing compound. It has been uniquely formulated with special polymers to increase its flexibility and water resistance. This is based on the most advanced acrylic polymer technology and is totally resistant to re-emulsification.

FEATURES

• Flexible: accommodates minor cracks

• Protect the concrete from long term weathering.

• UV stable: Can be left exposed

• Water based: safe to use, low odor & easy cleaning

• Excellent bond with cementitious substrates

• Self primed: No additional primer required

• Non toxic: Can be safely used as internal  waterproofing of

• potable water tanks and Permeability Test as per DIN – 1048 is 22 mm.

USES / APPLICATION AREAS:

Wet areas & kitchens, Balconies, Water tanks, As exposed waterproofing for non-accessible roofs, Retaining walls, etc,.

Use of rigid waterproofing membrane:

Let us see the testing procedure of DIN 1048 in LAB:

MORT&H fixes the specification – minimum requirement for the concrete used in roads, bridges, pavements, etc as follows:

MORT&H CI.1761.5: 

Ref: CIDCO OF MAHARASHTRA LTD - C.A.No.01/CIDCO/SE(KHR)/EE(KHR-I)/2011–12