labtests

FREEZING AND THAWING TESTS

OF THE

HIGH ENERGY MIXED CONCRETE (HEMC) COATINGS

Step 1

Steel samples after sandblasting

Step 2

The same samples coated with HEMC

(cement:sand:water = 1:2:0.45)

Step 3

The samples immersed in an ordinary water and sea water.

The metal ends are noticeably rusted.

Step 4

The recovered surfaces of the steel samples did not corrode.

Step 5

The tests of freezing (in the air, -20⁰C) and thawing (in sea and ordinary water, +20⁰C) were completed.

The recovered surfaces of the steel samples after 30 cycles of testing. The freshly uncovered steel surface, protected by the HEMC coating, did not corrode.

The recovered surfaces of the steel samples after 80 cycles of testing. The freshly uncovered steel surface, protected by the HEMC coating, did not corrode

Above is the sample after 185 cycles (thawing in see water). Though it began to show damages, the recovered segment did not corrode.

FREEZING AND THAWING TESTS

OF THE

ORDINARY CEMENT MORTAR COATINGS

Sandblasted steel samples coated with ordinary cement mortar of the same formula as BETALIT.

The samples' appearance after 3 days under water. The recovered segment did not corrode.

The same sample was destroyed after 20 cycles.

The HEMC coating was not damaged even after 325 cycles of freezing- thawing (ordinary water) and 180 cycles (sea water), whereas the cement mortar coating of the same formula was damaged after 20 cycles.

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