TY - GEN
T1 - Test method to evaluate shrinkage cracking of concrete
AU - Karaguler, M. E.
AU - Shah, S. P.
PY - 1990/1/1
Y1 - 1990/1/1
N2 - The possibility of shrinkage for a given drying environment depends on the following factors: free shrinkage, creep, and age-dependent properties of concrete. A common way to account for shrinkage cracking is to provide so-called secondary reinforcement. Recently, shrinkage reducing admixtures have been introduced. These admixtures can also reduce the possibility of shrinkage cracking. However, there is no standard test to assess cracking due to restrained shrinkage. It is also difficult to produce controlled cracking in linear specimens. Therefore, a ring type of specimen is used in this study. With the dimensions of specimen, it can be shown that the concrete ring is subjected to approximately uniaxial tensile stresses. Crack development is measured with an internally illuminated microscope. Effects of type and volume of fibers, conventional mesh reinforcement and of a shrinkage reducing admixture are being studied.
AB - The possibility of shrinkage for a given drying environment depends on the following factors: free shrinkage, creep, and age-dependent properties of concrete. A common way to account for shrinkage cracking is to provide so-called secondary reinforcement. Recently, shrinkage reducing admixtures have been introduced. These admixtures can also reduce the possibility of shrinkage cracking. However, there is no standard test to assess cracking due to restrained shrinkage. It is also difficult to produce controlled cracking in linear specimens. Therefore, a ring type of specimen is used in this study. With the dimensions of specimen, it can be shown that the concrete ring is subjected to approximately uniaxial tensile stresses. Crack development is measured with an internally illuminated microscope. Effects of type and volume of fibers, conventional mesh reinforcement and of a shrinkage reducing admixture are being studied.
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M3 - Conference contribution
AN - SCOPUS:0024983961
SN - 0872627772
T3 - Serv Durability Constr Mater Proc First Mater Eng Congr
SP - 626
EP - 639
BT - Serv Durability Constr Mater Proc First Mater Eng Congr
PB - Publ by ASCE
T2 - Serviceability and Durability of Construction Materials - Proceedings of the First Materials Engineering Congress Part 1 (of 2)
Y2 - 13 August 1990 through 15 August 1990
ER -