Concrete volume change in the form of shrinkage is typically caused by:
Water loss can result in ____ cracking
This type of cracking occurs due to restraint by the reinforcing steel to the movement of solid concrete materials while the concrete is plastic.
Shrinkage-reducing admixtures (SRAs) reduce the drying shrinkage of concrete by ____.
A crack-reducing admixture (CRA).
One the primary benefits of synthetic macrofibers over traditional secondary steel reinforcement is that these fibers provide a __reinforcement system.
Reducing the amount of water used in a concrete mixture will __.
Understanding the potential causes of cracking in combination with proper design and construction can minimize the incidence of cracks in concrete and significantly improve durability, as well as aesthetics, of a structure. Read the full article here.
Master Builders Solutions: Focus on preventing cracking in concrete
A A loss of water
B Low levels of coarse aggregate
C Low air content
D Cold weather environments
B Plastic shrinkage
D Drying shrinkage
E All of the above
A Surface Cracking
B Plastic Shrinkage Cracking
C Settlement Cracking
D Drying Shrinkage Cracking
E Thermal Cracking
A Reducing the amount of internal aggregate friction
B Increasing concrete’s tensile strength capacity
C Enhancing cement particle hydration
D Decreasing the surface tension of water in the capillary pores
A Significantly delays the time to cracking
B Reduces the initial crack width size if cracking occurs
C Provides a gradual reduction in stress build-up caused by drying shrinkage
D All of the above
A 2- dimensional
A Increase the potential for cracking
B Reduce the potential for cracking
C Have no effect on the potential for cracking