01011213

Component

https://doi.org/10.3141/1914-03

http://scholar.google.com...roon&publication_year=2005

The current empirical model for the Florida Department of Transportation (FDOT) concrete modulus of elasticity (E) is a function of concrete compressive strength and unit weight. Recent testing shows that this model consistently underestimates E for FDOT concrete. This underestimation may lead to construction problems caused by the overprediction of camber and the deflection of concrete structural members. E values for the typical concrete mix used in FDOT projects were experimentally determined at various concrete ages. Regression analyses were used to find the E models that best fit the generated data, and such models were compared with existing E models from the literature. It was found that the aggregate type and specific gravity play significant roles in influencing the E value of concrete. The best-fit E models for FDOT concrete, together with suggested modification factors for various aggregate types, are recommended.

01011203

English

pp 15-23

2005

Transportation Research Record: Journal of the Transportation Research Board

0309093872

Print

Figures (4) ; Photos (1) ; References (16) ; Tables (8)

Aggregates; Compressive strength; Concrete; Curvature; Deflection; Mathematical models; Modulus of elasticity; Regression analysis; Specific gravity; Structural members; Weight

Florida

Data and Information Technology; Geotechnology; Highways; Materials; I32: Concrete

TRIS, TRB

Dec 15 2005 9:22AM

• Comparative Study of Cumulative Damage to Pavement Concrete Under Splitting Tensile, Variable Amplitude Fatigue Loadings
• Effect of Curing Temperature on Hardened Concrete Properties: Mixtures of Ground Granulated Blast Furnace Slag, Fly Ash, or a Combination of Both
• Effects of Density and Mixture Proportions on Freeze-Thaw Durability of Roller-Compacted Concrete Pavement
• Evaluation of Use of Lithium Nitrate in Controlling Alkali-Silica Reactivity in Existing Concrete Pavement
• Formwork Pressure of Self-Consolidating Concrete in Tall Wall Field Applications
• Influence of Cement Composition on Expansions Observed in Standard and Modified ASTM C1260 Test Procedures
• Instrumentation and Analysis of High-Performance Concrete Bridge Decks
• Performance and Uniformity of Self-Compacting Concrete
• Performance of Low-Slump Underwater Concrete Incorporating Antiwashout Admixtures
• Properties of Crumb Rubber Concrete
• Virginia Department of Transportation Early Experience with Self-Consolidating Concrete