Drizoro Maxrest 25kg Structural Repair Mortar

MAXREST

MAXREST is a one-component structural repair mortar for quick-setting and shrinkage-compensated repairs on concrete and masonry structures. Formulated with special cements, additives, and selected aggregates, it has a thixotropic consistency ideal for vertical and overhead repairs without formwork. Excellent adhesion, mechanical strength higher than concrete, non-shrink, odour-free and solvent-free.

APPLICATION FIELDS

• Restoration of concrete elements: pillars, lintels, raincaps, architectural surfaces exposed to harsh conditions.
• Repair of honeycombs, cracks, fissures and damaged prefabricated concrete structures.
• Patching of cold joints and shaping concave corners prior to waterproofing in pools, basements, reservoirs.
• Structural strengthening of concrete elements (EN 1504-3, Principle 4 SS / Method 4.4).
• Restoration of passivity for rebars on concrete (EN 1504-3, Principle 7 RP).

ADVANTAGES

• Quick setting time: 15 to 20 minutes — single-phase, agile repair process.
• High adhesion to concrete and reinforcement; no bonding agent or primer required.
• Mechanical properties comparable or higher than concrete.
• Good thixotropy — successive layers from 10 to 30 mm without slump or formwork.
• Non-shrink: avoids cracking risk on setting.
• Odour-free — ideal for badly ventilated places (water tanks, shafts, sewers).
• Chloride-free, non-toxic, cement-based and solvent-free.
• One-component: just add water and apply by trowel.

HOW TO USE

Mix MAXREST with 14–16% clean water (3.5–4.0 L per 25 kg bag) using a low-speed drill (400–600 rpm) for 2–3 minutes until smooth and lump-free. Allow to rest 1 minute, remix briefly, then apply by trowel to a clean, dampened substrate. Apply layers between 10 mm and 30 mm thick. For multi-layer applications, scratch each previous layer once set (10–15 minutes) before applying the next.

CONSUMPTION

Estimated consumption is 1.67 kg/m² per mm thickness. A 25 kg bag fills approximately 15 litres (0.6 L per 1 kg of product).

TECHNICAL DATA

• Class: R4 / Structural (EN 1504-3, Type CC)
• Compressive strength @ 28 days: 45.5 MPa
• Flexural strength @ 28 days: 7.7 MPa
• Adhesion to concrete @ 28 days: ≥ 2.0 MPa (2.3)
• Density (cured): 1.98 ± 0.1 g/cm³
• Pot life @ 20 °C, 50% RH: 15 min
• Initial / Final setting @ 20 °C: 20 / 25 min
• Maximum aggregate size: 0.8 mm
• Chloride ion content: ≤ 0.05% by weight
• Reaction to fire: A1 (Euroclass)
• Application temperature: 5 – 30 °C
• Layer thickness: 10 – 30 mm per layer

PACKAGING

Supplied in 25 kg bags and 5 kg metal cans. Standard grey colour. Storage: 9 months in unopened bags, 12 months in metal cans.