Purpose: There is an overarching need to increase circularity in the construction sector, but not much is happening and only 1% of aggregate materials are being reused. Different construction actors can impact circularity, but their drivers and barriers are still unknown. Therefore, the purpose of this study is to explore how different drivers and barriers impactthe circular use of aggregate materials.

Design/methodology/approach: The purpose of this research was achieved using a qualitative approach based on three workshops and four interviews in Östergötland, Sweden.

Findings: The study found that drivers and barriers of circular aggregate materials can be thematically grouped into eight themes. Based on those findings, we propose a three-step model to increase circularity of aggregates; 1. Plan for mass handling spaces in the strategic municipalplans; 2. Develop common definitions of circular aggregate materials that corresponds tothose of virgin materials; 3. Develop and introduce (digital) information systems to increase the capacity of matching aggregates.

Research limitations/implications: This study was based on workshops and interviews with established organizations within the Östergötland region. Future research should include other regions, and the view of the local small construction firms or mass handlers etc.

Practical implications: This study helps organizations to understand how they can work towards circular aggregate materials in collaboration with other organizations in a structured way.

Original/value: This study is one of the first in-depth studies that investigates drivers and barriers of circular reuse of aggregate materials in construction.