
Causes of honeycombing in the column:
- Improper mixing ratio
- Vibrating not done properly
- Use of excessive stiff concrete.
- Use of figure size of aggregate in concrete during mixing.
- Curing not done properly
Following are the remedies of honeycombing in the column:
- the spacing of reinforcement should be maintained properly so that the vibrating needle goes middle in of the column and operating properly. If the spacing of reinforcement and stirrups is less, this illustrates the vibrating operations.
- In a column, strictly use of less than 20 mm aggregate used to reduce honeycombing defects.
- Tapping the shuttering with the help of wooden hammer during concreting this helps for minimising the honeycomb being up to great extent.
- Use of a thinner needle, it may be less than 25 mm. This allows vibrating at in very less space in the column.
Hope this helps.