01373635

Component

https://doi.org/10.3141/2290-13

http://scholar.google.com...anis&publication_year=2012

Significant efforts have been made to reduce carbon dioxide (CO2) emissions associated with the manufacture of portland cement, primarily by making the process more energy efficient and increasing the use of alternative fuels. Further reductions in CO2 can be achieved by lowering the clinker component of the cement because the pyroprocessing used to manufacture clinker produces approximately 1 tonne of CO2 for every tonne of clinker. Traditionally reductions in the clinker content of cement have been achieved by producing blended cement consisting of portland cement combined with a supplementary cementing material (SCM). In Canada, it is now permitted to intergrind up to 15% limestone with cement clinker to produce portland limestone cement or blended portland limestone cement. Recent trials were conducted at the Brookfield cement plant in Nova Scotia to evaluate the performance of a blended cement containing 15% ground, granulated blast furnace slag (an SCM) with that of a blended portland limestone cement containing the same amount of slag plus 12% interground limestone. Performance was evaluated by the construction of a section of concrete pavement using concrete mixtures produced with the two cements and various amounts of fly ash (another SCM). A wide range of laboratory tests were performed on the concrete specimens cast on site during the placement of the concrete pavement. The results indicated that the cements were of equivalent performance.

01455586

12-0740

English

pp 99–104

2012

Transportation Research Record: Journal of the Transportation Research Board

9780309223300

Print

Figures; Photos; References; Tables

Carbon dioxide; Clinkers; Concrete; Concrete pavements; Crushed limestone; Fly ash; Granulated slag; Greenhouse gases; Portland cement

Blended cement

Supplementary cementing materials

Canada

Environment; Highways; Materials; Pavements; I15: Environment; I32: Concrete

TRIS, TRB, ATRI

Feb 8 2012 4:57PM

• Can Soy Methyl Esters Improve Concrete Pavement Joint Durability?
• Development of Laboratory Testing Protocol for Rapid-Setting Cementitious Material for Airfield Pavement Repairs
• Development of Photocatalytic Pervious Concrete Pavement for Air and Storm Water Improvements
• Development of Precision Statement for Concrete Surface Resistivity
• Drying Shrinkage Behavior of Mortars Made with Ternary Blends
• Durability of Pavement Concretes Made with Recycled Concrete Aggregates
• Effect of Recycled Concrete Aggregate Properties on Mixture Proportions of Structural Concrete
• Effects of Deicing Salt Solutions on Physical Properties of Pavement Concretes
• Effects of Sample Preparation and Interpretation of Thermogravimetric Curves on Calcium Hydroxide in Hydrated Pastes and Mortars
• Field Evaluation of Ability of Photocatalytic Concrete Pavements to Remove Nitrogen Oxides
• Fingerprinting of Chemical Admixtures in Fresh Portland Cement Concrete by Portable Infrared Spectrometer
• Freeze–Thaw Durability and Salt Scaling Resistance Assessment of Portland Cement Concrete Composite Pavement
• Performance of Concrete Incorporating Stone Industry Waste as Aggregates
• Performance of Slag Cement in Hydraulic Cement Concrete
• Predicting Cement–Admixture Incompatibilities with Cement Paste Rheology
• Quantification of Reduction of Nitrogen Oxides by Nitrate Accumulation on Titanium Dioxide Photocatalytic Concrete Pavement
• Reducing Curing Requirements for Pervious Concrete with a Superabsorbent Polymer for Internal Curing
• Reducing Set Retardation in High-Volume Fly Ash Mixtures with the Use of Limestone: Improving Constructability for Sustainability
• Strength and Transport Properties of Concretes Modified with Coarse Limestone Powder to Compensate for Dilution Effects
• Surface Resistivity Measurements Evaluated as Alternative to Rapid Chloride Permeability Test for Quality Assurance and Acceptance