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Modifoam L is a foaming agent designed for soil conditioning in tunneling processes using Earth Pressure Balance Machines (EPBM). The product is specifically dedicated to higher-permeability soils, primarily composed of sands with minimal amounts of clays, silts, and muds. It is a carefully formulated mixture of anionic surfactants, inhibitors, and polymers, creating a stable foam.
The generated foam is injected into the working chamber during the tunneling process. The dosage of Modifoam L depends on geological conditions and the water content in the soil. The recommended dosage is 1.5–3% by weight relative to water.FER (Foam Expansion Ratio): 1:5 to 1:20.FIR (Foam Injection Ratio): 10% to 100%, recommended range: 40–60%.In variable geological conditions with localized layers of clays, silts, and muds, the properties of Modifoam L can be adjusted with the following additives:– Modistab TBM: Improves foam stability, inhibits clay swelling, and reduces adhesion of soil to machine components.– Modisperg TBM: Enhances soil consistency, reduces soil viscosity, disperses clays and silts, and minimizes soil adhesion to machine parts.
Appearance: Colorless liquid,Density: ± 1050 kg/m³,pH: 7.5–9.5.
Modifoam L is supplied in 200 kg drums or 1000 kg IBC containers.The product should be stored in its original containers at temperatures between +5°C and +35°C. The shelf life is 12 months from the production date.
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