Consorcio Linea 1 Metro Quito (Acciona-Odebrecht) DESCRIPTION
The Line 1 of the Quito metro will consist of a 22.6km tunnel and 13 new stations, in addition to the two already constructed.
The Tunnel Boring Machine EPB 'La Guaragua', excavating 1,131m in 30 consecutive days, set a new world record for the mechanized tunnelling excavation.
The potential of this project considering: admixtures for pre-cast concrete segments, two-component system, foam and polymers for soil conditioning and greases was near to 10 M€, for a total of 19 km excavation.
Mapei UTT is giving technical assistance during the excavation and is supplying foams, polymers together and greases:
POLYFOAMER FP/CC: foaming agent based on anionic surfactants with a natural lubricating polymer able to generate a stable foam compatible with every type of soil;
MAPEDRILL M1: synthetic liquid polymer soluble in water, used to homogenise the soil and make it cohesive and
MAPEBLOX/T: tail seal grease that, owing to its consistency, is easily pumpable; The particular formulation of the product, confers to MAPEBLOX/T excellent adhesive properties to all substrate types, rendering it therefore resistant to leaching, even in salt water;
MAPEBENT CBS 4
Bentonite sodica ad alte prestazioni per l'ingegneria civile
Synthetic polymer in liquid form for water based fluids to be employed in mechan
MAPEQUICK CBS SYSTEM 1
Liquid retarding admixture with plasticizing effect for cementitious-based injec
High performance liquid foaming agent, based on
biodegradable anionic surfact