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This research paper presents an analysis of the compression strength properties of concrete samples in the function of their calcium nitrate inhibitor content. This low cost inorganic inhibitor was added to the concrete mix in concentrations of 1% and 3% by weight of cement in addition of two different superplasticizers (MapeiDynamon SR 31 and Oxydtron). The compressive strengths of the so prepared samples were checked according to the relevant European standard and were within the acceptable limits, so this inhibitor does not weaken this important property of the concrete samples. Moreover, the MapeiDynamon SR 31 superplasticizer even showed higher (acceptable) values compared to the other type of superplasticizer due to the difference between their ability in reducing the ratio of water of the concrete samples.

Studying compression strength of XD3 concrete samples after addition of calcium nitrate inhibitor and superplasticizers