Use of Carbonated Residual Brines as main component of filling grout

Abstract : This study deals with the reuse of an industrial waste rich in CaCO 3 as a mineral addition and agent 9 of stability in low-strength filling grout for soil reinforcement applications. The physical, chemical 10 and mineralogical characteristics of these Carbonated Residual Brines (CRB) were determined and 11 completed by a study of CRB behaviour in cement-based materials and of the optimization of a 12 composition of low-strength filling grouts rich in CRB filling. The results showed that it was 13 possible to use CRB in low-strength filling grout, in replacement of bentonite and fine sand, with 14 better performance-especially in terms of stability. 15 16 Highlights 17 CRB is essentially composed of calcium carbonates (91%). 18 CRB can replace both bentonite and fine sand in low-strength filling grouts. 19 CRB strongly improves the stability of grouts. 20 21
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R. Delinière, Jean-Emmanuel Aubert, B. Husson. Use of Carbonated Residual Brines as main component of filling grout. Construction and Building Materials, Elsevier, 2015, 94, pp.800 - 806. ⟨10.1016/j.conbuildmat.2015.07.096⟩. ⟨hal-01876706⟩

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