; Thermal Strain and Drying Shrinkage of Concrete Structures in the Field
Documents
Resources
Learning Center
Upload
Plans & pricing Sign in
Sign Out
Your Federal Quarterly Tax Payments are due April 15th Get Help Now >>

Thermal Strain and Drying Shrinkage of Concrete Structures in the Field

VIEWS: 132 PAGES: 11

When concrete structures are placed in the field, substantial changes in temperature and moisture can occur. To predict stress and the corresponding risks of thermal and/or drying shrinkage cracking, an estimate is required of thermal strain and drying shrinkage not related to stress. In this study, a proposed method was developed to allow the direct field measurement of thermal strain and drying shrinkage in concrete structures. A nonstress cylinder was designed, which enabled the embedded strain gauge to measure actual thermal strain and drying shrinkage in concrete structures. Sensors, such as vibrating wire strain gauges and temperature and relative humidity (RH) sensors, were incorporated into the developed method. The validity of the method was investigated through laboratory tests as well as field implementation. It is expected that the proposed method can be efficiently used in field testing and allow realistic assessments of time-dependent behavior of concrete structures, including cracking potential. [PUBLICATION ABSTRACT]

More Info
  • pg 1
									 ACI MATERIALS JOURNAL                                                                                    TECHNICAL PAPER
Title no. 107-M57


Thermal Strain and Drying Shrinkage of Concrete
Structures in the Field
by Seongcheol Choi and Moon C. Won

When concrete structures are placed in the field, substantial               however, it is difficult to measure free-drying shrinkage in
changes in temperature and moisture can occur. To predict stress            the experiment. Because an outer exposed surface will dry
and the corresponding risks of thermal and
								
To top