TEST RESULTS

PREPARATION METHOD:

The sand and cement was dry blended until homogeneous. The gauging liquid was added until the desired consistency for laying was obtained. The wet mortar was cast in PVC rings of dimensions 75mm Dia. X 30Omm deep. The discs were de-moulded after hardening overnight and let cure at 2WC/50% R.H. for 28 days. All samples were cast in triplicate.
Sample Composition: The table shows thecomposition of the mortar samples.

SAMPLE
CEMENT (gm) SAND (gm) GAUGING LIQUID (gm)
Reference 300.0 990.0 195.0
Samples 1,2&3 300.0 990.0 191.4

TEST METHOD:1 10-
After curing, the discs were oven dried at 70.C overnight, cooled and weighed. All discs were placed on a water saturated polyurethane sponge in a water bath according to DIN52617. The mass of the discs was measured at 2, 5 and 24 hours.

RESULTS:

The capillary water absorption versus time is presented in the graph.

The results show that the inclusion of TECH-DRYAD Mortar Additive reduces the capillary water absorption of the mortar from 9.9% to 2. 1 % by mass. This represents an overall reduction of water absorption of 79%.