Cementitious Materials for Concrete (Part 2)-Cementitious Materials for Concrete (Part 2) (PDF)

Cementitious Materials for Concrete (Part 2) (PDF)

Pdf Summary

The ACI Committee E701 has developed a comprehensive bulletin titled "Cementitious Materials for Concrete" under designation ACI E3-25, scheduled for publication in March 2025. This bulletin is tailored for those in the concrete industry who are not specialists in concrete mixture proportions or in measuring concrete properties—making it conducive for students, craftsmen, inspectors, and contractors as an introductory resource. This document is not a state-of-the-art report or user manual but provides insights into various cementitious materials commonly used in concrete.<br /><br />The bulletin is organized into multiple chapters including but not limited to the history of Portland cement, its manufacturing process, sustainability initiatives, and different types and properties of cements such as Portland, slag, silica fume, and ground glass pozzolan. It also details the effects of supplementary cementitious materials like coal fly ash and natural pozzolans on concrete. <br /><br />There is a significant focus on sustainability in the concrete industry. The document explores the industry’s commitment to reducing greenhouse gas emissions and becoming carbon-neutral by 2050. It discusses alternative strategies like increasing the use of supplementary cementitious materials such as fly ash, slag cement, and natural pozzolans to replace a significant portion of Portland cement, thereby reducing the energy consumption and emissions during cement production. It also describes the emerging use of alternative cementitious materials (ACMs) which could replace Portland cement entirely.<br /><br />Furthermore, the bulletin explains the measures for uniformity, storage and handling of cement, indicating challenges such as color variations and temperature management of the cement. In addition, it highlights multiple standard testing methodologies to evaluate chemical and physical attributes of cementitious materials to ensure quality and performance. Finally, it encourages feedback for the improvement of ACI documents to keep them accurate and relevant.

Keywords

ACI Committee E701

Cementitious Materials

Concrete

Portland Cement

Sustainability

Supplementary Cementitious Materials

Greenhouse Gas Emissions

Alternative Cementitious Materials

Testing Methodologies

Carbon-Neutral