01479018

Component

https://doi.org/10.3141/2342-06

http://scholar.google.com...dani&publication_year=2013

This paper documents the use of an isothermal calorimeter as a scanning tool to evaluate early-age behavior of high-volume fly ash mixtures. A series of paste and mortar mixtures containing different fly ashes (one Class C fly ash and two Class F fly ashes) with replacement levels ranging from 20% to 60% and high- and low-alkali cement was evaluated. Materials testing included ASTM C109, compressive strength of mortar cubes at different ages; ASTM C1437, flow; ASTM C403, time of setting; and ASTM C1679, isothermal calorimetry. In most cases, for the same water–binder ratio (0.40) and replacement level, Class C fly ash mixtures exhibited higher strength but delayed setting compared with Class F fly ash mixtures. Isothermal calorimetry proved to be a good scanning tool for predicting setting time and early-age compressive strength and for identifying materials incompatibility.

01494308

13-1987

English

p 42–53

2013

Transportation Research Record: Journal of the Transportation Research Board

9780309263399

Print

Figures (11) ; References (11) ; Tables (3)

Cement mortars; Cement paste; Concrete pavements; Fly ash; Materials tests; Performance tests; Properties of materials

High volume fly ash concrete; Isothermal calorimetry

Bridges and other structures; Highways; Materials; Pavements; I32: Concrete; I33: Other Materials used in Pavement Layers

PRP, TRIS, TRB, ATRI

Feb 5 2013 12:27PM

• Comparison of the Superpave Gyratory and Proctor Compaction Methods for the Design of Roller-Compacted Concrete Pavements
• Effect of High-Volume Fly Ash on Shear Strength of Concrete Beams
• Evaluation of Drilled Shafts with Self-Consolidating Concrete
• Factors That Influence Electrical Resistivity Measurements in Cementitious Systems
• Identifying Improved Standardized Tests for Measuring Cement Particle Size and Surface Area
• Importance of Insulation at the Bottom of Mass Concrete Placed on Soil with High Groundwater
• Improving Concrete Sustainability and Performance with Use of Portland–Limestone Cement Synergies
• Influential Depth by Water Absorption and Surface Drying in Concrete Slabs
• Internal Curing of Concrete Bridge Decks in Utah: Preliminary Evaluation
• Low-Cost Techniques for Improving the Surface Durability of Pervious Concrete
• Observed Variability in Tests of Fresh Concrete Properties from the FHWA Highway Materials Engineering Course
• Performance of Pore-Lining Impregnants in Concrete Protection by Unidirectional Salt-Ponding Test
• Reducing the Specimen Size of the AASHTO T 97 Concrete Flexural Strength Test for Safety and Ease of Handling
• Ruggedness Study on the AASHTO T 336 Coefficient of Thermal Expansion of Concrete Test Method