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Influence of chemical additives and alkaline conditions on properties of lime-based injection grouts with dolomite powder

Abstract

This diploma thesis researches the influence of alkaline conditions and chemical admixtures, such as\ud superplasticizers PCE and PPh, on properties of lime-based injection grouts with dolomite filler.\ud Samples (bars) were prepared and exposed to different ageing conditions. At first, the samples were\ud exposed to room temperature for a 1-month period, after that the bars were exposed for 3 months to\ud accelerated conditions in a solution of 1M NaOH and at the temperature of 60°C.\ud The tests were undertaken on fresh and hardened grouts. On fresh grouts the test of fluidity was\ud carried out, while on hardened bars the changes in weight and volume were measured, and flexural\ud and compressive tests were conducted. Furthermore, the influence of glycerol carbonate on\ud carbonation of the lime binder was also investigated

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