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REKS® Strukto R4 — rapid-setting fibre-reinforced repair mortar of class R4
REKS

REKS® Strukto R4 — rapid-setting fibre-reinforced repair mortar of class R4

Thixotropic repair mortars

REKS® Strukto R4 is designed for repairing structures that need rapid compressive strength gain: at least 30 MPa after one day and from 60 MPa after 28 days. The rapid-setting fibre-reinforced mortar restores concrete damaged by rebar corrosion, mechanical and impact loads or the reaction of cement alkalis with the aggregate in industrial buildings, tanks, treatment plants, tunnels and dams. The class R4 mortar per GOST R 56378 has been tested per GOST R 59935 for resistance in liquid acidic aggressive media; the aggregate size is 0.63 mm.

Specifications

ManufacturerREKS — OOO “SPS”
Typethixotropic repair mortars
Useindustrial buildings, tanks and treatment plants, tunnels and metro, hydraulic structures and dams
Baserapid-setting fibre-reinforced mortar for repair work
Colourgrey
Packagingbag 25 kg
Application methodrepair of structures requiring rapid compressive strength gain of the repair mortar; repair of damage caused by rebar corrosion, mechanical and impact loads, and the reaction between the alkaline constituents of cement and the aggregate; repair of structures exposed to liquid acidic aggressive media
Application temperature+5…+30 °C
Curingprotection from precipitation for at least 24 h; in hot and windy weather — water spraying and covering with film
Key propertiesmodulus of elasticity: ≥25,000 MPa; density of hardened mortar: 2.6 ± 5 % t/m³; freeze-thaw resistance: F2 400; bond to substrate at 28 days: ≥2.3 MPa; water impermeability: W16; compressive strength at 28 days: ≥60 MPa; flexural strength at 1 day: ≥5 MPa; flexural strength at 28 days: ≥7 MPa; bond to substrate at 28 days after 50 freeze-thaw cycles in salts: ≥2.0 MPa; aggregate size: 0.63 mm; flowability (truncated cone spread on a flow table): 120–130 mm; flowability retention: ≥5 minutes; compressive strength at 1 day: ≥30 MPa; capillary water absorption: no more than 0.4 kg/(m²·min⁰·⁵); sulphate resistance coefficient (365 days): 0.982 %
Shelf life12 months from the date of manufacture
Standardsclass R4 per GOST R 56378; tested per GOST R 59935 (resistance in liquid acidic aggressive media)

Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.

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