Q&A: Engineering Insights: Q&A on LC3 and CCIL–Practical Guidance for Low-Clinker Cementitious Materials for Concrete

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Title: Q&A: Engineering Insights: Q&A on LC3 and CCIL–Practical Guidance for Low-Clinker Cementitious Materials for Concrete

Author(s):

Publication: Concrete International

Volume: 48

Issue: 5

Appears on pages(s): 68-72

Keywords: Blended cement, calcined clays, durability, low-clinker

DOI: 10.14359/51750694

Date: 5/1/2026

Abstract:
This article addresses questions regarding limestone calcined clay cement (LC3) and calcined clay + Type IL cement (CCIL), answered at the ACI Foundation’s 2025 Concrete Innovation Forum, including what they are, their setting behaviors, how their fresh properties compare to Type I/IL cement, their performance across key durability metrics, and the future of these blends in the concrete industry.

Related References:

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