In the field of road construction and maintenance, precision and adherence to high standards are crucial for achieving durable, safe, and sustainable infrastructure. 

BS 594987:2024 Asphalt for roads and other paved areas – Specification for transport, laying, compaction and product type testing protocols provides essential guidelines to ensure that asphalt mixtures meet the stringent requirements of the BS EN 13108 series of standards, which are legally mandated in the UK. has been newly revised to ensure it continues to serve as a key resource in this domain.

As road networks face increasing demands from traffic and environmental pressures, BS 594987 stands as a vital tool for professionals aiming to deliver high-quality, long-lasting surfaces.

An overview of BS 594987

BS 594987 is more than just a set of guidelines; it is a critical document that outlines the best practices for handling asphalt mixtures from the moment they leave the mixing plant until they are laid and compacted on the road surface. 

This standard is indispensable for professionals involved in road construction, maintenance, and asphalt production, as it ensures that the asphalt used is of the highest quality, properly installed, and capable of withstanding the rigors of daily traffic.

It is particularly focused on:

• Transporting asphalt mixtures: It lays out specific requirements for maintaining the integrity of asphalt during transport, ensuring that the mixtures arrive on-site in optimal condition.

• Laying and compaction: The document provides detailed protocols for laying and compacting asphalt mixtures, crucial for achieving a durable and even road surface.

• Product type testing: BS 594987 includes recommendations for testing asphalt mixtures to ensure they conform to BS EN 13108-20. This includes protocols for determining the design binder content of hot rolled asphalt (HRA) surface course mixtures and the calibration procedures for indirect density gauges.

Discover how standards support the lifecycle of our road and pavement infrastructure by visiting our Roads & Pavements topic page. 

What are the benefits of using BS 594987?

The adoption of BS 594987:2024 offers numerous benefits to those involved in road construction and maintenance:

• Improved durability: By adhering to the protocols outlined in BS 594987, road surfaces are more likely to withstand heavy traffic and harsh weather conditions, reducing the need for frequent repairs and resurfacing.

• Enhanced safety: The standard’s emphasis on proper laying and compaction techniques ensures that roads are smooth and even, reducing the risk of accidents caused by poor road conditions.

• Sustainability: The inclusion of warm mix asphalt and other environmentally friendly practices helps road construction projects reduce their carbon footprint, contributing to global efforts to combat climate change.

• Legal compliance: Since the BS EN 13108 series of standards are legally mandated in the UK, following BS 594987 helps ensure that all road construction projects are fully compliant with national regulations.

• Cost-effectiveness: By promoting the use of durable materials and best practices, the standard helps reduce the long-term costs associated with road maintenance and repair.

By adhering to the guidance in BS 594987, professionals in the industry can ensure that they are building roads that are not only durable and safe, but also environmentally responsible.

Explore our collection of sustainability and net zero standards that are supporting decarbonization in the built environment and beyond. Visit our Net Zero Topic Page.

Understanding the key changes in the latest revision to BS 594987

The construction industry is continuously evolving, and BS 594987 has been updated to reflect the latest advancements in asphalt technology and sustainable practices. 

Here are some of the key changes in the latest revision:

1. Inclusion of warm mix asphalt

One of the most significant updates is the addition of warm mix asphalt. Unlike traditional hot mix asphalt, warm mix asphalt is produced and applied at lower temperatures, reducing energy consumption and greenhouse gas emissions. This makes it a more environmentally friendly option, aligning with the global push towards sustainability in construction.

2. Enhanced guidance for bridge decks

The revised standard includes updated guidelines on the materials and processes used for bridge decks. These updates ensure that bridge surfaces are not only durable but also capable of withstanding the unique stresses they face.

3. New annexes

The standard now features several new annexes, each addressing specific aspects of asphalt handling and application:

• Transport and laying of mastic asphalt: This annex provides detailed instructions on the proper transport and laying techniques for mastic asphalt, which is often used in waterproofing and other specialized applications.

• Measurement of coated chippings: A new annex describes the method for measuring the rate of spread of coated chippings, which is essential for ensuring consistent surface texture and skid resistance.

• Compaction performance of rollers: Another annex details the method for assessing the compaction performance of rollers, a critical factor in achieving the desired density and durability of the road surface.

4. Focus on sustainability

The updated BS 594987 standard places a strong emphasis on sustainability. This includes aligning with changes made in PD 6691, published in 2021, and updates to the National Highways specification, particularly regarding the use of warm mix asphalt. These changes are crucial for reducing the carbon footprint of road construction projects and supporting broader environmental goals.

5. Superseding BS 598-1:2011

With the incorporation of methods for measuring the rate of spread of coated chippings, BS 594987 has now superseded BS 598-1:2011. This consolidation ensures that all relevant guidelines are contained within a single, up-to-date standard, making it easier for professionals to adhere to best practices.

Don’t miss out on this opportunity to implement the most advanced, sustainable practices in your road construction and maintenance projects. Get BS 594987 today.