Controlled Low-Strength Materials (CLSMs), are cementitious mortars used in several civil engineering applications. In Italy, they are mainly used for utility bedding and trench filling under road pavements. They are self-compacting cement mixtures capable of reaching a bearing capacity and strength comparable to that of soils and granular materials currently used for the same applications. In the paper, the authors show the results obtained from an experimental investigation aimed at the generation of new CLSM formulations to replace those currently used. These mixtures displayed the following properties: (a) self-compaction, (b) ability to quickly develop the required mechanical performance, (c) easy removability and possibility of re-use, (d) physical-chemical compatibility with materials derived from the recycling of industrial waste granular materials. The mixtures were tested at different intervals of the curing process in order to investigate their mechanical properties in the short, medium and long term. In particular, static triaxial tests were used to verify mechanical strength, while dynamic triaxial tests were e used to assess the stress strain response under moving traffic loads. The results obtained show that the new CLSMs exhibit appropriate mechanical properties compatible with the required structural function.
MATERIALI CEMENTIZI A BASSA RESISTENZA PER RIEMPIMENTI FLUIDI DI TRINCEE STRADALI PER SOTTOSERVIZI / Canonico, F.; Bianchi, M.; Bertola, F.; Bassani, Marco. - STAMPA. - (2012), pp. 207-215. (Intervento presentato al convegno 19° Congresso C.T.E. tenutosi a Bologna, Italia nel 8-10 novembre 2012).
MATERIALI CEMENTIZI A BASSA RESISTENZA PER RIEMPIMENTI FLUIDI DI TRINCEE STRADALI PER SOTTOSERVIZI
BASSANI, Marco
2012
Abstract
Controlled Low-Strength Materials (CLSMs), are cementitious mortars used in several civil engineering applications. In Italy, they are mainly used for utility bedding and trench filling under road pavements. They are self-compacting cement mixtures capable of reaching a bearing capacity and strength comparable to that of soils and granular materials currently used for the same applications. In the paper, the authors show the results obtained from an experimental investigation aimed at the generation of new CLSM formulations to replace those currently used. These mixtures displayed the following properties: (a) self-compaction, (b) ability to quickly develop the required mechanical performance, (c) easy removability and possibility of re-use, (d) physical-chemical compatibility with materials derived from the recycling of industrial waste granular materials. The mixtures were tested at different intervals of the curing process in order to investigate their mechanical properties in the short, medium and long term. In particular, static triaxial tests were used to verify mechanical strength, while dynamic triaxial tests were e used to assess the stress strain response under moving traffic loads. The results obtained show that the new CLSMs exhibit appropriate mechanical properties compatible with the required structural function.Pubblicazioni consigliate
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https://hdl.handle.net/11583/2502995
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