Abstract: In the construction of brick-concrete structure, the brick body

Masonry has a large amount of work and is a load-bearing structure.

Therefore, strengthen the quality control of brick masonry in the construction process.

The system is very necessary. Brick masonry consists of bricks and mortar. Except for ...

In addition to raw materials that meet the quality requirements, you must also

The main factors affecting the quality of masonry: brick watering and wetting

Humidity, mortar plumpness, if temporary interruption is

Not firm, build by laying bricks or stones joint and horizontal mortar joint thickness, etc.

Strict quality inspection, supervision and control. This paper mainly

This paper discusses the main factors affecting the construction quality of brick masonry and its quality.

Quantity control measures.

Keywords: brick-concrete structure; Strength; quality management

First, the main problems existing in brick masonry construction

1, the water wetting degree of brick is not enough when laying.

Pre-watering and wetting is an essential process. Brick watering

After that, the moisture in the mortar in the mortar joint will not be absorbed by the brick quickly.

Close, so that the mortar strength increases normally and increases.

Strengthen the bond between brick and mortar, and keep the mortar full.

A certain liquidity, which is convenient for operation and beneficial to insurance.

Masonry mortar is dense and full. However, if the bricks are dumped,

The water is too wet, or brick water is used now.

Can't penetrate into the brick and stay on the brick surface to form a water film.

Increase the fluidity of masonry mortar and produce masonry bricks.

Sliding makes the masonry deformation, and the flatness of the wall is difficult to control.

But also the drywall surface can not be kept clean. Therefore,

The moisture content of brick should be controlled within a certain range, and

It is also necessary to standardize the watering method. Principle of bricklaying after watering and wetting

The ideal water content is 2/3 of the saturated water content, which is about 1 0%.

1 5%。 In the field inspection, in order to cut off the bricks, break them.

The depth of drinking water around the water surface can reach10-20m.m. Right.

Brick watering should not be done temporarily when it is used, but 1 in advance.

It was soaked through with water. It is forbidden to hang bricks on the wall.

2, brick masonry horizontal mortar joint is not full.

The fullness of horizontal mortar joint is one of the factors that affect the strength of masonry.

A very important factor is the fullness of horizontal mortar joint.

Masonry, when the load, brick in masonry and

Mortars touch several local areas, focusing on.

Part load, make it in bending, shearing and

Complex stress state under local compression. Due to the thickness of the brick

Small and brittle under pressure, with bending and shearing characteristics.

Poor, when the brick is in bending, shearing and local compression.

It is easy to cause early cracking and make brick masonry lose its bearing capacity.

Carrying capacity. In the on-site inspection, the "100-grid" method is adopted.

Check that the fullness of horizontal mortar joint is not less than 8 0%.

3, leave if meet the requirements of leave if party.

Whether the method is reasonable or not and whether the joints are firm directly affects the tiles.

The masonry quality of the wall, that is, the integrity of the building, is very important for resistance.

Seismic fortification of buildings is a key issue.

Brick masonry has the following problems: 1) Reasons.

Bricklaying does not set the number of skin poles, and the four corners (vertical) of the external wall should be built first.

Head Angle), and then build by laying bricks or stones gables and longitudinal wall body, and then out.

Now leave if, generally leave straight if, not oblique.

Check. 2) It has become a common phenomenon that internal and external walls are not built at the same time.

And the rest are straight if, and a few still have yin if. 3) Stay

If it doesn't meet the requirements of the platform, it is inclined, while others are only under the wall.

1 m or so, leave an oblique if, and the above is still a straight if. 4) Stay in a straight line if

At the same time, the Rachel reinforcement is not set according to the specification: if it is adopted,

Using cold-drawn steel wire as Rachel reinforcement; Is the length of the Rachel rib?

Enough; The spacing of Rachel bars is not guaranteed; End of tie rod

Not processed into hooks and so on. 5) If the quality is sloppy,

If the bricks are not straight and the mortar is not full, some will be almost the same.

No mortars.

4, build by laying bricks or stones wrong brick masonry is generally more.

Compressive, so we should consider the integrity and stability of masonry.

Make love. The more the number of butyl bricks in masonry, the stronger the laterality.

Rachel FOSS. Staggered form, brick column and core masonry,

Multi-skin joints will affect the quality of masonry. Some workers

Brick laying is randomly assembled, and many brick columns are built with cores.

Method, but the heart is full of broken bricks. Due to random assembly,

Broken bricks are also used intensively, so many engineering walls use broken bricks.

There are many skin seams, up to ten pieces of skin.

5. The strength of brick and mortar cannot guarantee the influence.

In addition to operational factors, the strength of brick masonry mainly takes

Depends on the strength of brick and mortar. Therefore, for brick-concrete structure houses

To ensure the wall quality of building construction, we should first pay attention to brick and sand.

The quality of pulp is controlled. In recent years, some projects are in brick.

Before masonry construction, the strength of the brick has not been tested, and the sand

Mud is not prepared in trial or proportion. After the accident,

Only then do we know that the strength of brick and mortar can not meet the design requirements.

6. The structural column interlayer broke in the 7-degree earthquake.

In the multi-storey brick-concrete structure building in the fortified area, the longitudinal

Reinforced concrete constructional columns need to be set at the junction of transverse walls in order to

Enhance the seismic capacity of buildings. Around the constructional column

Brick masonry needs to be made into horse teeth, so that brick masonry can match the structure

These pillars are firmly connected together to form a whole. But there are many charities now.

Workers don't clean the masonry before pouring the constructional column concrete.

Bricks fall into mortar or garbage of constructional column, resulting in structure.

There is interlayer or even disconnection in the column building. Some workers

The constructional column is not straight through, and the layers are staggered.

Bit; The constructional column and masonry are not provided with Rachel bars; Grouped

There is no horse tooth at the junction with the constructional column; cause

Constructional columns can not only strengthen buildings.

On the contrary, the seismic capacity has weakened. This potential

In the case of earthquakes and other external forces, the danger will be

First, it led to the destruction of buildings.

Second, the brick masonry construction quality control measures

1, organize construction personnel to learn application specifications.

In order to ensure the construction quality of brick masonry, it must be strictly

According to the requirements of the Code. For example, in "specification"

Temporary interruption method and constructional column structure

Method, horizontal mortar joint control has clear requirements, but there are

Some construction workers are not sure and understand the Code; some

In team construction, the external wall should be built first, and then the internal transverse wall should be built.

The "three-step" masonry method for laying internal longitudinal walls is not available.

Really master the essentials of "standardization". So you need to organize a lot.

Grass-roots construction workers learn "norms" in order to be familiar with them.

Understand the "specification" and apply it accurately.

2. Strictly control the quality of materials in brick products.

Variety and strength grade must meet the design requirements. Used for settlement

Bricks on the surface of water-cooled wall and water-cooled column should have neat edges and corners and the same color.

Even. The quality and grade of various raw materials for preparing mortar shall be

Must meet the design requirements.

3. Improve the operation process and adopt appropriate masonry.

The fullness of mortar in horizontal mortar joint depends to a great extent.

On the masonry method, from the current construction situation, mining

Use the "three-in-one" bricklaying method (one shovel of ash, one brick and one extrusion).

Knead), this masonry method as long as the mortar consistency is appropriate, a.

Generally, the fullness of mortar can reach more than 8 0%.

Vertical joints can also squeeze mortar. Can better control the level.

Plumpness of mortar joint.

4, adhere to and carry forward the traditional construction technology.

In recent years, some effective measures have been taken in masonry construction, such as

Set a number of leather poles to hang on the verticality and flatness of the wall at any time.

Hang lines on both sides of the brick wall, with the integrity of 3 7 c m, and mix the mortar on the same day.

Run out that day, dry bricks don't go up the wall, etc. Through years of practice

Practice has proved that these traditional processes have great influence on the thickness of horizontal mortar joint.

Degree, flatness and verticality of the wall surface and other indicators can be.

Effective control measures should continue to be taken.

5, strengthen the inspection of key processes in the construction process.

Check whether the masonry brick meets the requirements and whether the mortar

No trial matching and proportional matching; Masonry is temporarily discontinuous.

Whether the connection is firm and whether the constructional column is pinched off.

Column, whether connected with masonry firmly; Masonry form

Whether there are serious defects (such as masonry brick columns with cores). Over the ground

Brick masonry in seismic fortification areas should be more strict, and the general situation is as follows

Conditions do not allow you to stay straight for a temporary rest. Yes, stonemason

The difference in quantity cannot guarantee the integrity and stability of masonry,

Be sure to take care of it.