High-performance, pourable and self-compacting concrete repair mortar for structural repairs up to 300 mm in a single pour.

Sika MonoTop®-436 N is a 1-component, pre-bagged, pourable and self-compacting repair mortar designed for high-quality concrete repair and structural strengthening.

Meeting the requirements of Class R4 according to EN 1504-3, Sika MonoTop®-436 N is suitable for demanding repair applications across buildings, bridges, infrastructure and civil engineering structures.

Its excellent flow properties allow the mortar to fill complex or congested areas effectively, while its low shrinkage, strong adhesion and durability characteristics provide a reliable long-term repair solution.

Applications

Sika MonoTop®-436 N is designed for a range of structural concrete repair and strengthening applications, including:

• Repairing spalled and damaged concrete

• Structural concrete restoration

• Structural strengthening

• Increasing the load-bearing capacity of concrete structures

• Reinstating concrete cover

• Repairing contaminated or carbonated concrete

• Restoration of concrete structures in buildings and civil engineering projects

The product is suitable for use in accordance with the relevant repair principles and methods of EN 1504-9, including concrete recasting, structural strengthening and restoration of passivity.

Suitable for Structural Concrete Repairs

Sika MonoTop®-436 N can be used for repairs to a wide range of concrete elements, including:

• Beams

• Balconies

• Columns

• Stairs

• Decks

• Walls

• Bridges and infrastructure

• Other structural and civil engineering concrete elements

Its self-compacting properties make it particularly useful where access is restricted or where reinforcement and existing structures require a highly flowable repair material.

Key Benefits

EN 1504-3 Class R4

Sika MonoTop®-436 N meets the requirements of Class R4 under EN 1504-3, making it suitable for high-performance structural concrete repair applications.

Pourable & Self-Compacting

The highly flowable formulation provides excellent flow characteristics and is designed to self-compact, helping achieve thorough filling of repair areas.

Up to 300 mm in One Pour

The mortar can be placed at depths of up to 300 mm in a single pour, providing an efficient solution for deeper concrete repairs.

Excellent Adhesion

Provides excellent adhesion to the existing concrete substrate, supporting a durable and reliable repair.

Low Shrinkage

The low-shrinkage formulation helps minimise the risk of cracking and supports long-term repair performance.

Durable & Resistant

Sika MonoTop®-436 N offers low water and chloride permeability along with carbonation resistance, helping protect repaired concrete in demanding environments.

Chloride Free

The formulation is chloride free, making it suitable for structural concrete repair applications where reinforcement protection is important.

Suitable for Finishing

Once formwork has been removed, the finished repair surface can be painted, allowing the repaired area to be finished to suit the surrounding structure.

Suitable for Drinking Water Contact

The product complies with the test requirements of AS/NZS 4020:2005 for use in contact with drinking water.

Product Description

Sika MonoTop®-436 N is supplied as a pre-bagged, single-component dry mortar. It is designed to produce a pourable, self-compacting micro-concrete when mixed according to the manufacturer's requirements.

The combination of excellent flow, self-compacting properties and strong adhesion allows the product to effectively fill repair areas, including locations around reinforcement and within complex structural sections.

With the ability to be placed up to 300 mm in one pour, Sika MonoTop®-436 N provides an efficient solution for deeper concrete restoration and structural repair work.

Concrete Restoration & Structural Strengthening

Sika MonoTop®-436 N is suitable for professional concrete repair projects where strength, durability, flow and structural performance are critical.

From repairing damaged beams and columns to restoring balconies, decks, walls and other civil engineering structures, its Class R4 performance and self-compacting formulation make it a versatile solution for structural concrete restoration.

Product Summary

Product: Sika MonoTop®-436 N
Product type: 1-component, pre-bagged repair mortar
Classification: Class R4 – EN 1504-3
Application: Structural concrete repair and strengthening
Placement: Pourable and self-compacting
Maximum pour depth: Up to 300 mm in one pour
Shrinkage: Low shrinkage
Chlorides: Chloride free
Suitable for: Buildings, bridges, infrastructure and civil engineering structures
Typical applications: Beams, columns, balconies, stairs, decks and walls
Drinking water: Complies with AS/NZS 4020:2005 test requirements for contact with drinking water