Larsen Highways MBM 60 Manhole Bedding Mortar HAPAS Approved

Larsen Highways MBM 60 Manhole Bedding Mortar from Larsen Building Products is a high-performance HAPAS-approved rapid-setting cementitious bedding mortar specifically developed for the installation of highway and street ironwork conforming to BS EN 124. Engineered for demanding infrastructure and utility applications, MBM 60 provides exceptional early strength development, allowing installations to be opened to traffic in as little as one hour.

Manufactured from a carefully controlled blend of specially selected aggregates, cements, and performance-enhancing additives, this single-component mortar requires only the addition of water to create a durable, high-strength bedding layer. It is ideal for bedding manhole cover frames, gully frames, access covers, drainage components, kerbs, paving flags, and paving setts in highways, roads, footpaths, and public infrastructure projects.

MBM 60 achieves a compressive strength of 20MPa after just one hour and exceeds 60MPa after 28 days, providing outstanding long-term durability and structural performance. Its low-shrinkage, frost-resistant formulation ensures reliable service life in demanding outdoor environments.

Fully compliant with the compressive strength requirements of the Manual of Contract Documents for Highway Works (MCHW) Volume 1, Series 500, Clause 507 Chambers, MBM 60 is the trusted solution for contractors, highways authorities, and utility providers requiring rapid reinstatement and minimal traffic disruption.

Key Features

• HAPAS and BBA approved as a standalone product
• Rapid-setting manhole bedding mortar
• Suitable for BS EN 124 highway ironwork installations
• Open to traffic after approximately 1 hour
• 20MPa compressive strength after 1 hour
• Over 60MPa compressive strength after 28 days
• Suitable for 10–75mm bed depths in one application
• Low-shrinkage formulation
• Frost-resistant performance
• Single-component mortar – simply add water
• Suitable for highways, utilities, and infrastructure projects