Evaluation of the backfill grout performance

The backfilling of the annular gap created between the soil and the lining during tunneling is a very important operation, entrusted with various functions. The cement mixtures used in these applications must therefore meet certain requirements (fluidity, setting time, strength) according to their specific task.

GEEG carries out a research activity on this topic, with the aim to highlight the chemical and physical factors that influence the performance of these mixtures.

The services offered by GEEG, direct products of these studies, are addressed to engineering and chemical companies interested in optimizing a certain mix design or in developing additives that can bring the grout to achieve specific characteristics.