EN 1015-6:1998

Overview

EN 1015-6:1998 (CEN) specifies a standardized method for the determination of bulk density of fresh mortar used in masonry. The scope explicitly includes mortars that contain mineral binders and covers both dense and lightweight aggregates. This standard provides a repeatable approach for laboratories and site personnel to assess the apparent bulk density of fresh mortar mixes as part of quality assurance and mix validation.

EN 1015-6:1998 has been adopted nationally (for example as SIST EN 1015-6:1999) and forms part of the wider EN 1015 series for methods of test for mortar for masonry.

Key Topics

• Bulk density of fresh mortar: Measurement objective covered by the standard.
• Material scope: Includes mortars with mineral binders and both dense and lightweight aggregates.
• Consistency and repeatability: The method ensures comparable results between laboratories and sites when performed according to the standard.
• Quality assurance: The standard is intended to support routine testing for production and construction control.

Applications

The determination of bulk density of fresh mortar under EN 1015-6:1998 supports several practical uses:

• Quality control on-site and in production facilities to verify that delivered or produced mortar matches expected properties.
• Mix design evaluation to confirm changes in aggregate grading, binder content or the inclusion of lightweight aggregates affect bulk density as intended.
• Comparative testing between batches or supplier materials to detect inconsistencies that could affect workability, yield and hardened properties.
• Documentation for compliance with project specifications and national regulations where bulk density is a specified parameter.

Benefits of applying this standardized method include improved mix reproducibility, better estimating of yield and coverage, and more reliable input data for structural and thermal calculations when lightweight mortars are used.

Related Standards

• EN 1015 series - Methods of test for mortar for masonry (other parts address consistency, strength, water retention and more).
• National adoptions such as SIST EN 1015-6:1999 reflect the standard's status in specific countries.

For practitioners, engineers and quality managers, EN 1015-6:1998 is an essential reference for consistent measurement of fresh mortar bulk density. Implementing the method helps ensure reliable mix performance, accurate material accounting and compliance with contract or regulatory requirements.