Chemical resistance testing
12/01/05 ACCI REF.NO. 58344 – LENGTH CHANGE IN SULPHATE SOLUTION (AS 2350.14)
The University of New South Wales: The Australian Centre for Construction Innovation
Properties of Type GP Cement Concrete Modified with Penetron Admix
Results: Expansion of the samples of the two concretes are shown in Table 4.8-1. Proposed assessment criteria of the AS 2350.14 test for acceptable sulphate resistance is that the expansion should be no more than 900 microstrains after 16 weeks immersion in the sulphate solution. Expansions of samples of the concrete Mix-P and Mix-C in this test were less than 600 microstrains or less than two thirds of the expansion limit of the proposed criteria. The expansion of the samples of Mix-P was slightly higher than that of the control mix Mix-C. The difference is not very significant and test results may have been influenced by the much higher slump (130 mm) of Mix-P compared with that of Mix-C (80 mm).


Table 4.8-1 EXPANSION IN MICROSTRAIN
Immersion Time (week) 0 2 4 6 8 10 12 14 16
Mix-P 0 106 165 224 271 334 419 489 591
Mix-C 0 69 139 176 218 295 345 386 463


8/31/2006 REPORT NO.: 2004A102007
Shanghai Research Institute of Building Sciences
Chemical Resistance of Penetron Admix Modified Mortar after soaked in various chemical solutions for 60 days.
Results: Penetron Admix mortars were observed to have better resistance to chemicals than control mortars.