shrinkage cracking

shrinkage cracking

Cracking of a concrete structure or member owing to failure in tension caused by external or internal restraints as reduction in moisture content develops, or as carbonation in the concrete occurs, or both.
References in periodicals archive ?
MasterFiber microfibers are F 70, a fibrillated product for shrinkage and temperature reinforcement; F 100, an enhanced fibrillated polypropylene product geared for shrinkage and temperature reinforcement; M 100, a high-tensile strength, high modulus of elasticity, ultra-thin monofilament homopolymer polypropylene product; plus, M 35 and M 70, monofilament polypropylene fibers engineered to reduce plastic shrinkage cracking.
The researchers recommend internal curing as a convenient strategy to reduce shrinkage deformations and, consequently, shrinkage cracking.
Shrinkage cracking in fibre reinforced concrete, ACI Materials Journal 87(2): 138-148.
Shrinkage and restrained shrinkage cracking of self-compacting concrete compared to conventionally vibrated concrete, Materials and Structures 42: 71-82.
It's dry - the use of plasterboard dry-lining inside the house instead of wet plaster can minimise drying-out shrinkage cracking and it's quick to decorate.
Daly (1999) reported that restrained shrinkage-induced cracks cause 12% and 10-14% of deteriorations in the bridges in France and in Germany, respectively; in UK and Norway the shrinkage cracking is one of the major causes of such defects.
The objectives of this study were 1) to analyze the direct relationship between shrinkage cracking and transverse tensile characteristics in moisture saturated wood, and 2) to compare measured tensile strength with published data on the maximum shrinkage, compression yield, and relaxed compression yield stresses from the same wood species.
The role of creep to reduce induced tensile stress in restrained shrinkage has been recognised and included in methods to predict shrinkage cracking.
Remember that shrinkage cracking is cosmetic, and that the additional cost for reducing shrinkage cracking is really only justified where appearances are critical.
Fiber reinforcement improves the performance of the concrete by protecting it from plastic shrinkage cracking, or early cracking of the concrete in the green phase.
Concrete is subject to two types of shrinkage cracking.
Its strength develops in a progressive manner as the concrete ages, resulting in a highly durable material that also exhibits a good resistance to shrinkage cracking.