How To Treat Honeycomb In Concrete?

How To Treat Honeycomb In Concrete
Honeycomb Concrete Repair – Honeycomb in concrete can be repaired by the following steps:

  1. Clean the area where honeycomb appears by brushing the loose fine aggregates with a wire brush and clearing the loose coarse aggregates by a chipping hammer.
  2. Then spray water to the affected area to wash away the dusts present on it.
  3. Apply chemi-fix glue on the area after the area gets dry. The glue attach properly when the surface is in dry state.
  4. Mix the concrete grout properly with white cement and add water to it as specified by the manufacturer.
  5. Lastly, paste the mixture to the honeycomb in the concrete. In large sized honeycomb, make a pocket by the chipping hammer and pour the mixture and then jam the poured mixture with piece of wood or any other formwork material to apply pressure.
  6. Remove the formwork material after 12 – 16 hours and proper curing of concrete should be done in the area.

How do you get rid of honeycomb in concrete?

Honeycomb Concrete Repair – Honeycomb in concrete can be repaired by the following steps:

  1. Clean the area where honeycomb appears by brushing the loose fine aggregates with a wire brush and clearing the loose coarse aggregates by a chipping hammer.
  2. Then spray water to the affected area to wash away the dusts present on it.
  3. Apply chemi-fix glue on the area after the area gets dry. The glue attach properly when the surface is in dry state.
  4. Mix the concrete grout properly with white cement and add water to it as specified by the manufacturer.
  5. Lastly, paste the mixture to the honeycomb in the concrete. In large sized honeycomb, make a pocket by the chipping hammer and pour the mixture and then jam the poured mixture with piece of wood or any other formwork material to apply pressure.
  6. Remove the formwork material after 12 – 16 hours and proper curing of concrete should be done in the area.
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What is the effect of honeycomb structure in concrete?

Honeycomb in concrete refers to the cavities and voids on the surface of the concrete or inside the concrete. It is caused due to less clear cover or improper vibration and sometimes due to bleeding of concrete. Here it is discussed about what is honeycomb in concrete, types of honeycomb in concrete, causes of honeycomb in concrete, effect of honeycomb in concrete, how to avoid honeycomb in concrete and honeycomb concrete repair. Honeycomb refers to the cavities and voids on the surface of the concrete or inside the concrete. It is named as honeycomb because the pattern of the cavities and voids looks similar to a bee nest. The surface honeycomb in concrete can be detected as soon as the formwork of the structure is removed, but the honeycombs which are inside the concrete can be detected by advanced techniques such as ultrasonic tests and others.

Honeycomb structure in concrete is a very serious issue in construction, It not only reduces the concrete strength but also makes the reinforcement of the structure vulnerable to water and moisture and as a result corrosion takes place on the bars. Corrosion is the process which takes place in the reinforcement bars and as a result the bars start loosing its bond with the concrete which makes the structure very dangerous in its life expectancy.

When honeycomb in concrete occurs the coarse aggregates are seen on the surface of the structure with less bonding of mortar due to which it leaves cavities and voids. Honeycomb commonly occurs in columns and beams, and sometimes it is rarely seen on the slab because of bleeding of concrete.

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How do you use Chemi fix on concrete?

Repairing Of Honeycombs In Concrete: – 1. First, remove the loosened aggregates and concrete particles from the affected surface by using a wire brush and a chipping hammer.2. Clean the surface thoroughly with a brush to remove finer particles and then wash the surface with water.3.

  • Let the surface dry well and apply Chemi-fix glue on the area.4.
  • Now mix the concrete grout with white cement and add the required amount of water ( as per the specification recommended by the manufacturer).5.
  • Then pour/paste the mixture in the affected area to fill it completely.
  • In case of large honeycomb, the concrete mixture should be poured after creating a pocket.6.

Remove the formwork after 12 hours and then cure it well. Also Read – How To Prevent Cracks In Concrete What Is Concrete Resurfacing? Causes Of Cracks In Concrete What Is Spalling Of Concrete? Self-compacting Concrete. If you like this article then please share it with your friends & also like our Facebook Page and join our Telegram Channel,

How do you prevent honeycombs on the side of a building?

Remedies for Honeycombs in Concrete – Strictly speaking wherever honeycombs are observed in concrete, the affected area should be broken and the portion should be re-concreted after applying grouting chemical to the old surface. Honeycombs as a defect not only reduces the load bearing capacity but water finds an easy way to reinforcement rods and rusting and corrosion starts.

  1. Corrosion is a process which continues through reinforcement rods even in good concrete, this result in losing grip between rods and concrete, which is very dangerous to safety and life of concrete structures.
  2. Reinforced concrete structures have failed within 20 or 30 years of their construction due to honeycombs, which is less than half their projected life.
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Especially no risk should be taken in case of columns, machine foundations, rafts, beams etc., where breaking and recasting is the only best way. In case of honeycombs on surface pressure grouting with cement based chemicals which are non-shrinkable can be adopted after taking opinion of the designer and acting as per his advice.

  1. It will not be out of context to point out that contractors and their supervisors are in the habit of hiding honeycombs by applying super facially cement plaster on the honeycombs, hence site engineer must be very cautious.
  2. At places of junction of columns and beams concrete with strictly 20mm and down aggregates should be used with slightly more water and cement to avoid honeycombs.

Taping with wooden hammer the sides of shuttering from outside during concreting and vibrating will help minimizing honeycombs to a great extent in case of columns and beams. Use of thinner needle say 25mm or less with vibrator at intricate places of concreting will also help in reducing honeycombs.