01519103

Component

https://doi.org/10.3141/2441-15

http://scholar.google.com...eiss&publication_year=2014

Portland limestone cements (PLCs) have recently been approved as a part of the ASTM C595/AASHTO M240 specifications. These cements are designed to enable more sustainable concrete production by replacing up to 15% of the clinker with interground limestone particles. The PLCs represent a potential method to reduce the carbon dioxide embodied in built infrastructure and extend the life of limestone quarries. This paper presents a comparison of the performance of three commercially available PLCs meeting the ASTM C595/AASHTO M240 specifications and three ordinary portland cements (OPCs) made from the same cement clinkers. An additional OPC was blended with limestone that had two mean particle sizes. One OPC and PLC were used with a Class C fly ash. Each of these cementitious systems was used to produce typical concrete paving mixtures with the performance of these materials being quantified through a series of standardized tests. The results of the study show that the mechanical properties of PLCs have negligible changes as they relate to design practices and implementation. The early-age volume changes of a PLC ground to levels consistent with achieving similar 28-day strengths were shown to be similar to that of the corresponding OPC, whereas PLCs that were ground significantly finer might lead to increased early-age shrinkage. The transport properties show behavior that is ±30% of the conventional OPC, whereas the results for PLC systems containing fly ash show a synergistic effect with improved performance. The overall results of this study show that PLCs conforming to ASTM C595/AASHTO M240 could achieve similar performance as the OPC they would replace.

01547891

14-3319

English

pp 112–120

2014

Transportation Research Record: Journal of the Transportation Research Board

9780309295307

Print

Figures (4) ; Photos; References (27) ; Tables (4)

Clinkers; Fly ash; Limestone; Mechanical properties; Paving materials; Portland cement; Shrinkage

Bridges and other structures; Highways; Materials; Pavements; I30: Materials

PRP, TRIS, TRB, ATRI

Jan 27 2014 3:09PM

• Acoustic Emission and Low-Temperature Calorimetry Study of Freeze and Thaw Behavior in Cementitious Materials Exposed to Sodium Chloride Salt
• Capillary Pressure Monitoring in Plastic Concrete for Controlling Early-Age Shrinkage Cracking
• Determination of Required Insulation for Preventing Early-Age Cracking in Mass Concrete Footings
• Development of Aggregate Avoidance Index for Evaluating Recycled Aggregate Concrete
• Development, Field Testing, and Implementation of Improved Bridge Parapet Designs
• Effect of Fiber-Reinforced Polymer Wrapping on Concrete Chloride Penetration and Concrete Cover
• Fracture Properties of Roller-Compacted Concrete with Virgin and Recycled Aggregates
• Influence of Slag Aggregate Production on Its Potential for Use in Internal Curing
• Kinetic Study of Photocatalytic Degradation of Nitrogen Monoxide with Titanium Dioxide Nanoparticles in Concrete Pavements
• Laboratory and Field Investigations on High-Volume Fly Ash Concrete for Rigid Pavement
• Methodology for Identifying Zero-Stress Time for Jointed Plain Concrete Pavements
• Mixture Design for Minimizing Cement Content in Pavement Concrete
• Nanoconcrete for Rigid Pavements: Abrasion Response and Impact on Friction
• Observed Variability in Cylinder and Core Strength from FHWA Highway Materials Engineering Course
• Surface Texture Measurements of Crack Surface to Establish Joint Shear Stiffness
• Volume Stability and Cracking Potential of Prebagged, Cement-Based Nonshrink Grouts for Field-Cast Connections