What is MaxRest used for?

MaxRest is a one-component structural repair mortar for concrete and masonry - patching spalls, repairing damaged columns and beams, rebuilding eroded surfaces, and filling formwork tie holes. Thixotropic for vertical and overhead work.

What strength does it achieve?

MaxRest reaches 29 MPa compressive at 7 days and 45.5 MPa at 28 days. Flexural 7.7 MPa at 28 days. Bond strength to substrate exceeds 2.0 MPa - typically pulling out parent concrete in failure tests.

Application thickness and method?

Apply 10-30mm per layer. Mix 25kg bag with 3.5-4.0L water. Brush on a 5:1 bonding slurry first, then trowel the mortar firmly into the prepared substrate to expel air. Scratch between lifts.

What primer for exposed rebar?

Apply MaxRest Passive (sold separately) to clean, abraded reinforcing steel before applying MaxRest. The two products are designed as a system for full corrosion protection.

EN 1504-3 Class R4 Structural (Type CC). Principles 3, 4, and 7 (concrete restoration, structural strengthening, and rebar protection). Fire reaction Class A1.

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Drizoro MaxRest One-Component Structural Repair Mortar

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Drizoro MaxRest - A Superior One-Component Structural Repair Mortar | Quick-Setting, Non-Shrinking, and Highly Adhesive!

Discover MAXREST, the ultimate one-component structural repair mortar engineered with a blend of special cement, premium additives, and meticulously selected aggregates. This innovative formulation results in a thixotropic product that boasts swift-setting properties, ensuring efficient repairs with minimal downtime. Say goodbye to worries about shrinkage as Drizoro MaxRest is designed to deliver a flawless finish that lasts.

Revolutionize your structural repairs with Drizoro MaxRest , the top-choice mortar for construction professionals. Experience the power of advanced technology and superior materials combined in one extraordinary product."

EN 1504-3 Type CC Class R4 structural repair mortar

45,5 MPa compressive strength at 28 days, non-shrink and quick-setting

Builds 10 to 30mm per layer on vertical and overhead surfaces without formwork

Size: 5 KG

5 KG$46.2525 kg$136.55

Quantity: 1

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Drizoro MaxRest One-Component Structural Repair Mortar

5 KG

The Waterproofing Shop

Pickup available, usually ready in 24 hours

22/872 Canterbury Road
Roselands NSW 2196
Australia

+61280213517

How to Use

Brush on a bonding slurry of 5 parts MAXREST to 1 part water, then trowel on layers between 10mm and 30mm thickConfirm the concrete to be repaired is structurally sound, firm, uniform and free of cement laitance
Remove all damaged and loose concrete until sound concrete is reached
Sawcut the edges of the repair perpendicular to the surface to a minimum depth of 10mm
Expose all corroded reinforcement and remove concrete around the bars until the edges are not affected by rust
Remove rust by wire brush, needle gun, sand or shot blasting
Where additional protection is required, apply MAXREST PASSIVE oxide converter and protector to the bars
Clean the substrate by sand blasting or high pressure water, leaving it free of paints, coatings, efflorescence, loose particles, grease, oils, curing agents, dust, gypsum plasters and organic growth
Dampen the entire repair area with clean water, drain excess and start once the surface acquires a matte appearance
Mix a 25 kg bag with 3,5 to 4,0 litres of clean water using a slow speed drill at 400-600 rpm with a disc mixer for 2 to 3 minutes
Allow the mix to rest for 1 minute and remix briefly before applying
Brush on a bonding slurry of 5 parts MAXREST to 1 part water, working it into the substrate and over the reinforcement bars
Start the repair mortar while the slurry is losing brightness but is still fresh, and re-slurry if it dries out
Apply in layers between 10mm and 30mm thick, pressing the mortar with the trowel to prevent trapped air
Scratch the surface of each layer with a trowel before the next lift and apply the next layer once the previous one is completely set, 10 to 15 minutes later
Finish the last layer with a sponge, wood or plastic float or trowel before final set, without overworking
Keep the repair moist for at least 24 hours by misting with water or covering with polyethylene sheeting or damp burlaps
Clean all mixing and application tools with water immediately after use
Overcoat when required with MAXSEAL or MAXSEAL FLEX cement-based coatings, or MAXSHEEN or MAXSHEEN ELASTIC acrylic coatings

Technical Specifications

Product Classification: Structural repair mortar for concrete structures, CE marked to EN 1504-3, Type CC and Class R4
Secondary Classification: EN 1504-7 mortar for protection against corrosion of reinforcement
Chemical Base: One-component, special cements, additives and selected aggregates, thixotropic and shrinkage-compensated
Appearance and Colour: Grey powder
Maximum Aggregate Size: 0,8mm
Density of Powder: 1,45 +/- 0,1 g/cm3
Mixing Water: 15 +/- 1% by weight, 3,5 to 4,0 litres per 25 kg bag
Bonding Slurry Ratio: 5 parts MAXREST to 1 part water
Minimum Application Temperature: Above 5C substrate and ambient
Optimum Application Temperature: 10C to 30C
Pot Life: 15 minutes at 20C, 50% RH
Initial / Final Setting Time: 20 min / 25 min at 20C, 50% RH
Working Time After Mixing: Place within 8 to 10 minutes
Thickness Per Layer: 10mm to 30mm
Density of Cured and Dry Mortar (EN 1015-10): 1,98 +/- 0,1 g/cm3
Compressive Strength (EN 12190): 29,0 MPa at 7 days, 45,5 MPa at 28 days
Flexural Strength (EN 1015-11): 5,0 MPa at 7 days, 7,7 MPa at 28 days
Adhesion on Concrete at 28 days (EN 1542): 2,3 MPa, requirement 2,0 MPa minimum
Elastic Modulus (EN 13412): 23,8 GPa, requirement above 20 GPa
Chloride Ion Content (EN 1015-17): 0,05% maximum by weight
Carbonation Resistance (EN 13295): 4,0mm maximum, control concrete 4mm
Capillary Absorption (EN 13057): 0,01 kg/m2 h0,5, requirement 0,5 maximum
Thermal Compatibility, Bond Strength After 50 Cycles: Freeze-thaw (EN 13687-1) 2,1 MPa; Thunder shower (EN 13687-2) 2,0 MPa; Dry cycling (EN 13687-4) 2,2 MPa
Reaction to Fire (EN 13501-1): Euroclass A1
Consumption: 1,67 kg per m2 per mm of thickness*
Yield: A 25 kg bag fills approximately 15,0 litres, 0,6 litres per 1,0 kg of product*
Pack Sizes: 25 kg bags, 5 kg metal cans and 25 kg metal drums, standard grey colour
Shelf Life: Nine months in unopened original sealed bags, twelve months in metal drums or cans, stored cool, dry and above 5C
Hazard Classification (SDS): Signal word Danger. H314 causes severe skin burns and eye damage; H317 may cause an allergic skin reaction; H335 may cause respiratory irritation
* Consumption figures are for guidance only. Drizoro requires a preliminary test on site to establish exact consumption.

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Drizoro MaxRest One-Component Structural Repair Mortar5 KG

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Drizoro MaxRest One-Component Structural Repair Mortar $46.25

Technical overview

Maxrest is a one-component, non-shrink, quick-setting structural repair mortar for concrete and masonry, made from special cements, additives and selected aggregates to give a thixotropic mortar that builds 10mm to 30mm per layer on vertical and overhead surfaces without formwork. It is CE marked under EN 1504-3 as a Type CC, Class R4 structural repair mortar and under EN 1504-7 for protection of reinforcement against corrosion, with declared values including 45,5 MPa compressive strength at 28 days and Euroclass A1 reaction to fire. Those are CE declared performance values, not an Australian accredited test certificate, and no NATA or CodeMark certificate is published for this product.

View full technical data sheet

Key applications

Restoration of structural concrete elements, recovering original shape and function
Repair of general structural concrete on vertical or overhead surfaces without formwork
Repair of honeycombs, cracks and fissures
Repair of pillars, lintels, raincaps and architectural concrete exposed permanently to weather
Repair of pre-fabricated concrete elements damaged by mechanical impacts, corrosion of reinforcements and freeze/thaw cycles
Structural strengthening of concrete elements by adding mortar
Restoration of passivity for rebars and increasing cover to reinforcement
Repair of concrete structures subject to carbonation
Patching of cold joints and making of concave corners prior to waterproofing in reservoirs, swimming pools and basements

Surface suitability

Concrete (structurally sound, firm, free of cement laitance, damaged and loose concrete removed, edges sawcut perpendicular to a minimum depth of 10mm)
Concrete with corroded reinforcement (bars exposed and de-rusted, minimum 1cm of MAXREST cover around the bar)
Masonry (clean and free of paints, coatings, efflorescence, loose particles, grease, oils, curing agents, dust, gypsum plasters and organic growth, dampened to a matte damp finish)

Do not apply on substrates that are vitrified or enamelled, or treated with water repellent agents. Do not apply on bituminous materials, metals, wood, plasters or paints, and do not apply over weak substrates. Do not apply where substrate or ambient temperature is at or below 5C, or where temperatures are expected to fall below 5C within 24 hours, and do not apply to frozen or frost-covered surfaces. Optimum application temperature is 10C to 30C. Do not add cements, additives, aggregates or other compounds, do not use leftovers from previous mixes, and never add more water to restore workability. Do not mix more material than can be used in 10 minutes. Observe the maximum 30mm thickness per layer. Do not use in contact with very soft water, acid water or carbonic water, and where sulphates are present in groundwater, seawater or wastewater use the MAXREST ANTISULFAT sulphate-resisting version instead. Keep the repair moist for at least 24 hours after application and protect it from extreme heat and direct sunlight. The Safety Data Sheet classifies MAXREST as Danger, H314 causes severe skin burns and eye damage, H317 may cause an allergic skin reaction and H335 may cause respiratory irritation, so wear rubber gloves and safety goggles and do not breathe the dust.

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Technical Specifications

Product Classification	Structural repair mortar for concrete structures, CE marked to EN 1504-3, Type CC and Class R4
Secondary Classification	EN 1504-7 mortar for protection against corrosion of reinforcement
Chemical Base	One-component, special cements, additives and selected aggregates, thixotropic and shrinkage-compensated
Appearance and Colour	Grey powder
Maximum Aggregate Size	0,8mm
Density of Powder	1,45 +/- 0,1 g/cm3
Mixing Water	15 +/- 1% by weight, 3,5 to 4,0 litres per 25 kg bag
Bonding Slurry Ratio	5 parts MAXREST to 1 part water
Minimum Application Temperature	Above 5C substrate and ambient
Optimum Application Temperature	10C to 30C
Pot Life	15 minutes at 20C, 50% RH
Initial / Final Setting Time	20 min / 25 min at 20C, 50% RH
Working Time After Mixing	Place within 8 to 10 minutes
Thickness Per Layer	10mm to 30mm
Density of Cured and Dry Mortar (EN 1015-10)	1,98 +/- 0,1 g/cm3
Compressive Strength (EN 12190)	29,0 MPa at 7 days, 45,5 MPa at 28 days
Flexural Strength (EN 1015-11)	5,0 MPa at 7 days, 7,7 MPa at 28 days
Adhesion on Concrete at 28 days (EN 1542)	2,3 MPa, requirement 2,0 MPa minimum
Elastic Modulus (EN 13412)	23,8 GPa, requirement above 20 GPa
Chloride Ion Content (EN 1015-17)	0,05% maximum by weight
Carbonation Resistance (EN 13295)	4,0mm maximum, control concrete 4mm
Capillary Absorption (EN 13057)	0,01 kg/m2 h0,5, requirement 0,5 maximum
Thermal Compatibility, Bond Strength After 50 Cycles	Freeze-thaw (EN 13687-1) 2,1 MPa; Thunder shower (EN 13687-2) 2,0 MPa; Dry cycling (EN 13687-4) 2,2 MPa
Reaction to Fire (EN 13501-1)	Euroclass A1
Consumption	1,67 kg per m2 per mm of thickness*
Yield	A 25 kg bag fills approximately 15,0 litres, 0,6 litres per 1,0 kg of product*
Pack Sizes	25 kg bags, 5 kg metal cans and 25 kg metal drums, standard grey colour
Shelf Life	Nine months in unopened original sealed bags, twelve months in metal drums or cans, stored cool, dry and above 5C
Hazard Classification (SDS)	Signal word Danger. H314 causes severe skin burns and eye damage; H317 may cause an allergic skin reaction; H335 may cause respiratory irritation
* Consumption figures are for guidance only. Drizoro requires a preliminary test on site to establish exact consumption.

Frequently asked questions

View all FAQs

What is MaxRest used for?

Compatibility
MaxRest is a one-component structural repair mortar for concrete and masonry - patching spalls, repairing damaged columns and beams, rebuilding eroded surfaces, and filling formwork tie holes. Thixotropic for vertical and overhead work.
What strength does it achieve?

Performance
MaxRest reaches 29 MPa compressive at 7 days and 45.5 MPa at 28 days. Flexural 7.7 MPa at 28 days. Bond strength to substrate exceeds 2.0 MPa - typically pulling out parent concrete in failure tests.
Application thickness and method?

Installation
Apply 10-30mm per layer. Mix 25kg bag with 3.5-4.0L water. Brush on a 5:1 bonding slurry first, then trowel the mortar firmly into the prepared substrate to expel air. Scratch between lifts.
What primer for exposed rebar?

Compatibility
Apply MaxRest Passive (sold separately) to clean, abraded reinforcing steel before applying MaxRest. The two products are designed as a system for full corrosion protection.
Standards rating?

Compliance
EN 1504-3 Class R4 Structural (Type CC). Principles 3, 4, and 7 (concrete restoration, structural strengthening, and rebar protection). Fire reaction Class A1.

Why trade professionals choose Drizoro

Drizoro is a Spanish manufacturer of cement based waterproofing and concrete repair products, supplied to the Australian trade through The Waterproofing Shop. The range on this site covers Maxseal Foundation and Maxseal Flex, along with repair mortars, grouts, joint products and mesh, used on concrete and masonry where water has to be held back rather than simply shed. Choosing between the rigid and the flexible grade is the key decision, and it comes down to the substrate, the direction of the water and how much movement the structure is likely to see.

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