What is the treatment method of concrete honeycomb

If it is a small honeycomb, it can be washed with water first, repaired with 1:2 or 2:5 cement mortar, if it is a large honeycomb, the loose stones will be removed first, washed with water to clean and wet, and then tamped with fine stone concrete with a higher grade to strengthen maintenance.

The surface is whitewashed, can not be treated, the surface is not painted, after the hemp surface part is watered and fully moistened, the original concrete mix ratio is used to remove the stone mortar, and the hemp surface is smoothed and calendered.

Causes; The surface of the formwork is rough and sticky with dry concrete, the watering is not wet enough before pouring concrete, or the formwork joint is not blocked, when pouring, the concrete in contact with the formwork part loses too much water or slurry, and the concrete is in a dry and hard state, so that many small concaves are formed on the surface of the concrete.

The concrete mixing time is short, the amount of water added is not accurate, the workability of concrete is poor, and there are places where there are less mortars and more stones after concrete pouring, forming honeycomb. There is no layered pouring of concrete, and improper blanking causes concrete segregation, resulting in honeycomb surface. After the concrete is poured, the vibration quality is poor or leakage, resulting in a honeycomb surface.

For small honeycombs, 1:2 or 1 cement mortar is smoothed and compacted after washing;

Larger honeycomb, chisel off weak and loose particles, wash the formwork, and carefully fill and compact with fine stone concrete of a higher strength grade; Deep honeycomb can be buried in the grouting pipe and exhaust pipe, the surface is plastered with mortar or poured concrete to close the cement grout.

The main reasons for the appearance of hornet's nest after the concrete pouring is completed are as follows:

Templates. The processing accuracy of the template seam is insufficient, and there is a leakage gap after assembly;

The surface of the formwork is uneven or has scars;

The rust spots on the surface of the template are not removed or are not completely removed, the template is oiled too early, the release agent is brushed with waste engine oil, and the oil coated on the surface of the template is too viscous;

The formwork support is not firm, and the formwork is dismantled prematurely.

In terms of concrete mixture, different brands of cement, release agent and sand and gravel from different material yards are used, and the amount of cement is too large or too little, the amount of sand is too much, or the particle size of the stone is too small, the cement inventory time is too short, the amount of sand is too much, or the amount of water is too much, and the concrete mixture slumps too large. The measurement is not accurate when batching, the mixing is not thorough, the concrete has more delamination and segregation or water loss, and it is easy to form color difference; When calcium chloride is added to concrete, dark streaks will form on its surface; If the amount of superplasticizer is too large, segregation and water leakage will occur, and there will be loose mortar on the surface.

Aspects of pouring concrete.

Improper vibration method, i.e., early vibration, over-vibration, fast vibration, both early vibration and over-vibration, late vibration, under-vibration, leakage vibration, and unequal vibration procedures;

The pouring process is improper, such as the drop in the concrete pouring process is too large, which will lead to concrete segregation and color difference.

After washing, smooth and compact with 1:2 or 1:2 5 cement sand code early slurry; Larger honeycomb, chisel off the weak and loose particles at the honeycomb, after brushing, use A3 durable high-strength repair material for careful filling and tamping, deep honeycomb, if it is difficult to remove, can be buried grouting pipe, exhaust pipe, surface plastering mortar or pouring concrete after closure, cement grouting treatment.

Carefully design, strictly control the grip ratio of concrete with old mold, and check it frequently to achieve accurate measurement, uniform concrete mixing, and suitable slump; If the cutting height of concrete exceeds 2m, a string drum or chute should be set; Irrigation should be layered blanking, layered vibration, to prevent vibration leakage; The formwork seam should be tightly blocked, and the formwork support should be checked at any time to prevent slurry leakage during the watering.

After washing, smooth and compact with 1:2 or 1:2 5 cement mortar; Larger honeycomb, chisel off the weak and loose particles at the honeycomb, after brushing, use A3 durable high-strength repair material for careful filling and tamping, deep honeycomb, if it is difficult to remove, can be buried grouting pipe, exhaust pipe, surface plastering mortar or pouring concrete after closure, cement grouting treatment.

Carefully design, strictly control the concrete mix ratio, and check frequently, so that the measurement is accurate, the concrete is mixed evenly, and the slump is suitable; If the cutting height of concrete exceeds 2m, a string drum or chute should be set; Irrigation should be layered blanking, layered vibration, to prevent vibration leakage; The formwork joints should be tightly blocked, and the formwork support should be checked at any time to prevent slurry leakage during watering.

The phenomenon of concrete honeycomb is that the concrete structure is partially loose and has no strength. The reason for this is that the blanking is improper or the blanking is too high, and the string cylinder is not set to concentrate the stones, resulting in the segregation of the stone mortar;

How to deal with honeycomb when the appearance of concrete engineering appears? What is the cause of honeycomb? The following is an introduction to the content of how to deal with the honeycomb in the appearance of the supermold concrete project brought by the construction network for reference.

First, the cause of honeycomb.

1) The mixing ratio is not accurate, and the sand and gravel grading is not good; Dig aside.

2) Stirring unevenly;

3) template leakage;

4) Insufficient vibration or leakage vibration;

5) The concrete is too thick at one time, the layering is not clear, the concrete handover is not clear, and the vibration quality can not be mastered;

6) The free falling height exceeds the macro rubber determination, concrete segregation, and stone piling;

7) The vibrator is damaged, or the power is cut off during the monitoring and the vibration leaks;

8) The vibration time is not sufficient, and the bubbles are not excluded.

1. The prevention and control measures are:

Strictly control the mix ratio, strictly measure, and check frequently;

Concrete mixing should be sufficient and uniform;

If the blanking height exceeds 2m, a string drum or chute should be used;

Layered blanking, layered tamping, to prevent vibration leakage;

Plug the gaps of the formwork, and check and correct the leakage at any time during pouring;

2. The treatment measures are:

For small honeycombs, 1:2 cement mortar is smoothed and compacted after washing;

Larger honeycomb, chisel off weak and loose particles, wash the formwork, and carefully fill and compact with fine stone concrete of a higher strength grade;

Deep honeycomb can be buried in the grouting pipe and exhaust pipe, the surface is plastered with mortar or poured concrete to close the cement grout.

Hello dear and happy to serve you, 1Inspector Zheng Ji checks the strength of the concrete structure. 2.

Clean the concrete surface of debris and remove the horizontal honeycomb on the surface with a hammer or planer to reduce the thickness of the repair. 3.Mix the cement and bibland mixture, add an appropriate amount of water, and mix it evenly with a mixer to form a slurry.

4.The mixed slurry is evenly applied to the honeycomb position, and it is cleaned and leveled with a flat-head steel bar or a bush lead planer to make it complete on the same level as the original surface, and the repair can be completed at this time. 5.

The water on the surface is fully removed, and then the laser flaw detector is used to detect the flaw on the surface of the repair site to ensure that the repair strength meets the requirements.

The honeycomb phenomenon on the concrete wall refers to the appearance of a large number of different sizes on the concrete surface.

First, the depth is not.

1. Small pits with irregular spacing. This phenomenon will make the wall surface unsmooth and unsightly, and in severe cases, it will also affect the strength and durability of the concrete wall. Below, we will introduce the reasons for the honeycomb shape of concrete walls from two aspects: concrete materials and construction technology.

First, the problem of concrete materials.

1) The concrete mix ratio is unreasonable: the concrete mix ratio will directly affect the strength and compactness of the concrete, if the mix ratio is unreasonable, it will make the concrete surface irregular small holes.

2) Unqualified or uneven concrete materials: The quality of concrete materials is also a key factor affecting the flatness of concrete surfaces. If there are quality problems with the selected cement, aggregate and other materials, or if there are differences in the quality of materials in different batches, it will lead to honeycomb on the surface of the concrete.

Second, the construction process problems.

1) Vibration is not in place: Vibration is not in place is one of the main reasons for the honeycomb on the surface of concrete. When pouring concrete, if the vibration is not thorough, it will lead to insufficient density of the concrete surface and honeycomb.

2) Premature demoulding: concrete needs to be cured for sufficient time after pouring, otherwise it is easy to appear surface cracks and honeycombs. If the demoulding time is too early, that is, when the concrete is not fully cured, it will lead to the honeycomb shape of the concrete surface.

3) Improper construction environment: Concrete needs to maintain a suitable construction environment during the construction process, if the environment is too wet or too hot, it will lead to honeycomb on the surface of the concrete.

In general, there are various reasons for the honeycomb shape of concrete walls, which need to be comprehensively considered in the selection of concrete materials, the construction environment of concrete and the construction of Changlun technology, and make various preparations to avoid this problem.

What are the causes of honeycomb, which is a common problem in concrete quality? The following Zhongda Consulting will give you a detailed introduction for the Shenshi Feng examination.

During the construction of concrete engineering, some common quality problems often occur, which seriously affect the quality of the project, and carry out the prevention and control from the causes of common quality problems.

Phenomenon: The concrete structure is loose, less mortar, more stones, and a honeycomb-like hole is formed between the stones.

The concrete mix ratio is not accurate, and the measurement of sand, gravel, cement and other materials is inaccurate, resulting in less mortar and more stones;

The concrete mixing time is not enough, the mixing is not uniform, the workability is poor, and the vibration is not compact;

Improper blanking or too high blanking makes the stones concentrated, and Jichang causes the segregation of the stone mortar;

The concrete is not layered, the vibration is not real, or the vibration leakage, or the vibration time is not enough;

The gaps in the floor slab are not tightly blocked, and the cement slurry is lost;

The steel bar is dense, and the particle size of the stone used is too large or the slump is too small;

The foundation, columns, and the roots of the wall continue to be poured with the upper layer of concrete without intermittent.

The surface of the concrete structure is delivered, so that the compressive strength of the concrete in such a part of the avenue will wake up compared to the normal concrete under a specific load, and the entire force will be weakened.

The surface of the concrete structure is delivered, so that the compressive strength of the concrete in such a part of the avenue will wake up compared to the normal concrete under a specific load, and the entire force will be weakened.

When honeycomb appears on the surface of the concrete structure, the compressive strength of the concrete will be reduced, and the overall force of the whole concrete will be weakened when a specific load will be more brittle than the normal concrete.

Concrete poured walls, honeycombs appear on the entire wall, there are on the walls of every room, does this affect the occupants? How can I remedy it?

How to fix it?

If the small honeycomb on the concrete can be smoothed out according to the ratio of one to two, if the large wind pot needs to be smashed and rinsed, the same grade of concrete can be used for deep filling and direct irrigation.