Victoria University TEST REPORTS
July 6, 1995
Subject: Salt erosion resistance of concrete blocks
Salt water erosion test data for: Standard concrete block
Concrete block containing Tasco/Tech-Dry Block Emulsion
1. Description of substrates
2. Test method
1.DESCRIPTION OF SUBSTRATES
Four grey blocks of dimensions (WxDxL) 39x9x19 cm were supplied.
Two of the blocks were marked "Standard 1 and Standard 2" and the other two were marked "Treated 1 and Treated 2".
2. TEST METHOD
The blocks were oven dried 70C overnight, cooled and weighed. All blocks were placed in a bath of 10% Sodium Sulphate under ahead of 15mm for 5 hours and cooled. This process constitutes 1 crystallisation cycle. The blocks were re-weighed and then put through the next cycle. The test was conducted for a total of 15 cycles.
The weight loss of the blocks after 15 cycles are presented in Table 1.
Table 1 . Weight loss of the tested substrates after 15 cycles
|The results show that the inclusions of Block Emulsion reduces the weight loss after 15 cycles from 12% to approximately 0.4%. Additionally, the Treated blocks were intact at the end of the test, whereas the standard blocks were destroyed by salt erosion.
Signed : Dr.D A Kagi Date 6/7/1995