![]() ![]() WARNING Phenolphthalein is listed in REACH appendix 2 and its lists of substances of very high concern. These results can be tied in to FWD data and give a good indication of the pavements load bearing performance.BS EN 12390-12:2020 pdf download.Testing hardened concrete Part 12: Determination of the carbonation resistance of concrete一Accelerated carbonation method.Ī solution of 0,8 g of phenolphthalein powder dissolved in a solution of 70 ml ethanol and 30 ml of deionised water or a suitable alternative indicator giving a colour change in the range pH 8 to 11 that gives a sufficiently clear colour change in concrete to differentiate the neutralized zone, e.g. In support of our core logging and pavements reports we offer the chance to test the strength of concrete cores by measuring the compressive strength and density in accordance with BS EN 12390-3:2009, BS EN 12390-1:2012, BS EN 12390-7:2009, BS EN 12504-1:2009. Our wide scope of sampling and testing methods are based on current British and European Standards, and we are UKAS accredited to take the concrete cores in accordance with BS EN 12504-1:2009. In the UK, most of the structural concrete that is produced is required to meet high standards before it can be used. By performing such tests consistently, you can detect changes in concrete that could affect its long-term performance. Different quality tests on concrete such as compressive strength tests, slump tests and permeability tests are used to ensure the quality of the concrete that is supplied is appropriate for a given specification.įresh concrete tests measure factors such as strength, consistency, unit weight, air content, and temperature. ![]() Quality tests on concrete are performed as a part of a quality control analysis of concrete structures. ![]()
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