Explore with CarbonCure: Case Studies, Featured Projects & Regulatory Framework

Specifying Low-Carbon Concrete: A QC Perspective Panel 2

Hear quality control (QC) experts from Central Concrete, Lauren Concrete, Irving Materials and Bay Ready Mix discuss trends influencing concrete quality, performance, and sustainability, the role that QC professionals can play in promoting the use of more sustainable materials, and what specifiers should know about specifying low-carbon concrete.

Specifying Low-Carbon Concrete: A QC Perspective Panel 1

Hear quality control (QC) experts from Vulcan Materials, Thomas Concrete, Ozinga Ready Mix and Chaney Enterprises discuss trends influencing concrete quality, performance, and sustainability, the role that QC professionals can play in promoting the use of more sustainable materials, and what specifiers should know about specifying low-carbon concrete.

CarbonCure Ready Mix Technology Trial Results

Industrial pilot testing results of the carbonated ready mix concrete are presented in this technical note. The process created nanocrystalline carbonate reaction products that positively effected the early hydration and the compressive strength. The carbonated concrete was as much as 20% stronger than the control concrete without any compromise in pore solution pH or risk for chloride penetrability.

Calculating Sustainability Impacts of CarbonCure Ready Mix

This paper shows how the injected CO₂ improved the concrete’s compressive strength with minimal impact on fresh air content or workability. It includes three-way comparisons between a reference batch, reduced binder batch and reduced binder batch with CO₂ addition, confirmed that the CO₂ could allow for a 5-8% reduction in binder loading without compromising strength. A model case shows that integrating a CO₂ utilization step into conventional concrete production can, net of process emissions, reduce the carbon footprint of the concrete by 4.6%.

CarbonCure Ready Mix Technology Case Studies

This paper examines data provided by a ready mix producer partner who installed the CarbonCure Technology and used the system to produce concrete with an optimized dosage of CO₂. 45,000 cubic yards of concrete were produced over an 8 month period using a 5% binder reduction in conjunction with an optimized dose of CO₂. The estimated cement savings exceeded 450 tonnes and more than 400 tonnes of CO₂ emissions were avoided. The use of the technology did not impact the producer’s cycle time; all operations continued as normal throughout this assessment.

Impact of CO₂ Utilization in Fresh Concrete on Corrosion

This document explains the difference between early carbonation and atmospheric carbonation, and how early carbonation has a benign impact on steel corrosion. A detailed description of why early carbonation does not increase the risk of steel corrosion is included.

Types of Concrete Carbonation

Concrete can be subjected to two distinct types of carbonation, weathering carbonation and early age carbonation. The CarbonCure Technology uses early age carbonation to sequester CO₂ into concrete. The document explores both types of carbonation in more detail.

CarbonCure Durability Assessment Report

This technical note reviews the conclusion that concrete treated with CO₂ had fresh state properties consistent with the desired performance. The required workability and air content was achieved. The surface resistivity, bulk resistivity and RCPT indicated that the two batches had comparable permeability. Corrosion measurements indicated corrosion had not started in either sample and pore solution pH was unaltered by the CO₂ treatment. Flexural strength increased 6%.