00740635

Component

https://doi.org/10.3141/1574-04

http://scholar.google.com...ldea&publication_year=1997

Shrinkage cracking can be a critical problem in concrete construction, especially for flat structures such as highway pavements, slabs for parking garages, and bridge decks. One way to reduce the shrinkage cracking is to provide reinforcement in the form of wire mesh to resist tensile forces. In recent years, short, randomly distributed fibers have been used to control shrinkage cracking. The efficiency of shrinkage-reducing admixtures (SRAs) in controlling restrained shrinkage cracking of concrete is reviewed. A ring-type specimen was used for restrained shrinkage cracking tests. The SRA selected for this investigation was a propylene glycol derivative, which was used at 1% and 2% by weight of cement. Free (unrestrained) shrinkage, weight loss, compressive strength, and fracture toughness were also investigated. The results of SRA concretes were compared with that of plain concrete with the same water-to-cement ratio. A theoretical model based on nonlinear fracture mechanics was developed for predicting transverse cracking of the concrete ring specimen caused by drying shrinkage. The model prediction of time to cracking compared well with the experimental data. The model can be extended to different geometries and dimensions than those considered in this research.

This paper appears in Transportation Research Record No. 1574, Advances in Concrete and Concrete Pavement Construction.

English

p. 25-36

1997

Transportation Research Record

0309059739

Figures (8) ; References (15) ; Tables (7)

Admixtures; Alternatives analysis; Compressive strength; Concrete; Cracking; Forecasting; Fracture properties; Mathematical models; Shrinkage; Theory; Transverse cracking; Water cement ratio

Experimental data; Shrinkage reducing admixtures

Highways; Materials; I32: Concrete

TRIS, TRB, ATRI

Sep 8 1997 12:00AM

• APPLICABILITY AND SIGNIFICANCE OF RHEOMETRIC TESTS FOR RHEOLOGY OF FLUID AND SELF-LEVELING HIGH-STRENGTH CONCRETE
• APPLYING STATISTICAL METHODS FOR FURTHER IMPROVEMENT OF HIGH-PERFORMANCE CONCRETE FOR NEW YORK STATE BRIDGE DECKS
• CRITERIA FOR OPENING EXPEDITED BONDED CONCRETE OVERLAYS TO TRAFFIC
• EFFECT OF SILICA FUME AND SUPERPLASTICIZER ADDITION ON SETTING BEHAVIOR OF HIGH-STRENGTH MIXTURES
• EFFECT OF SUPERPLASTICIZER ON SELF-COMPACTABILITY OF FRESH CONCRETE
• ELECTROMAGNETIC PROPERTIES OF CONCRETE AND THEIR SIGNIFICANCE IN NONDESTRUCTIVE TESTING
• FIBER OPTIC SENSING OF PRESTRESSED-PRISM-REINFORCED CONTINUOUS-COMPOSITE CONCRETE BEAMS FOR BRIDGE DECK APPLICATION
• FREEZE-THAW DURABILITY OF CONCRETE WITH GROUND WASTE TIRE RUBBER
• FUTURE RESEARCH TRENDS IN HIGH-PERFORMANCE CONCRETE: COST-EFFECTIVE CONSIDERATIONS
• INVESTIGATION OF FIBER-REINFORCED CONCRETE FOR USE IN TRANSPORTATION STRUCTURES
• NEW FIELD SYSTEM FOR MEASURING DEGREE OF CONSOLIDATION OF CONCRETE DURING VIBRATION
• NONDESTRUCTIVE DETERMINATION OF RESPONSE OF SHEAR KEYS TO ENVIRONMENTAL AND STRUCTURAL CYCLIC LOADING
• PERFORMANCE OF RIGID PAVEMENTS CONTAINING RECYCLED CONCRETE AGGREGATES
• RELATIVE COSTS OF VARIOUS CONCRETE PAVEMENT FEATURES
• VIBRATION STUDY FOR CONSOLIDATION OF PORTLAND CEMENT CONCRETE