Wind-hydropower model wall

In the process of decoration, we often encounter a problem, that is, building a new wall under the design requirements, and cracks often appear at the junction of this new wall and the old wall. This is a common problem, so why do cracks appear at the junction of old and new walls? The decoration is divided into three parts: the top part of the wall, the wall part and the ground part. As a wall decoration, it is the focus of our home improvement. If you want to decorate your home, you must decorate your own wall. But do you know what you should pay attention to before wall decoration? The master said that poor wall treatment will affect our family's fortune and wealth, so we must follow these steps to decorate and build walls at home!

I. Process flow

1, brick or block: lime-sand brick and light brick are used;

2. Cement: 425(R) ordinary silicon cement shall be used, and different cement varieties shall not be mixed;

3. Sand: medium sand should be used, and impurities such as grass roots should not be contained;

4. Water: tap water;

5. Admixtures: Lime plaster should be used and maintained for at least 7 days before use. Dehydrated and hardened lime plaster is strictly prohibited. The above materials should meet the design requirements, and have the factory certificate and test report. Unqualified materials shall not enter the site.

Second, the quality requirements

1. Before bricklaying, mortar mixture ratio, technical disclosure and ingredient measurement are ready;

2. When bricklaying, the moisture content of the block should be controlled. For perlite blocks and ceramsite concrete blocks, masonry can be done without watering to ensure masonry bonding;

3, block construction should play the main axis of the building and masonry control line, after inspection, before construction;

4. When the horizontal mortar joint thickness of masonry skin brick exceeds 20mm due to excessive floor elevation deviation, fine stone concrete should be used for leveling. It is forbidden to mix broken bricks or level with mortar in masonry mortar, and it is forbidden to use side bricks, and the middle is filled and leveled;

5. The bricklaying project adopts the model first system, that is, the model wall (room) bricklaying construction is carried out first, and the construction can be fully rolled out after the acceptance of Party A, design, supervision and quality and safety departments of the company;

6. Quality standard: meet the construction quality and technical requirements.

Third, bricklaying construction technology

1. Mixing mortar: Weigh the ingredients according to the mortar mixture ratio provided by the laboratory. In the process of mixing, pay attention to the water content of mortar and adjust it in time to ensure accurate feeding, and the consistency of mortar should be controlled at 7-10 cm;

2. Mortar masonry should be staggered up and down, the mortar joint of internal and external masonry should be straight and the mortar should be full. Plumpness: the horizontal joint should not be less than 90%, and the vertical joint should not be less than 80%. The horizontal mortar joint thickness and vertical mortar joint width are generally 10mm, but not less than 8mm and not more than12mm; ;

3. The corner and junction of the brick wall should be laid at the same time, and the temporary breaks that cannot be laid at the same time and must be kept should be made into oblique if. The length of the inclined channel should not be less than 2/3 of the height. If it is really difficult to leave a temporary gap, a straight gap can be left except at the corner, but it must be made into a straight gap, and the number of Rachel bars should be increased. Two 6mm steel bars should be placed every 65438+500mm wall thickness, and the spacing along the wall should not exceed.

4. When hollow blocks are used, blind hole (back cover) blocks should be staggered, with the bottom of the hole facing upward to ensure full mortar joint. The lap length of the upper and lower skins should not be less than 90mm, and the lightweight aggregate block should not be less than 120mm, otherwise Rachel reinforcement should be set in the mortar joint;

5. Masonry about 300 meters high from the bottom of beam and slab shall be built at least once every other day, and the lower masonry shall be built after the deformation is stable. Masonry must be squeezed with the bottom of beam and slab, and the upper cortex should avoid using auxiliary small solid blocks for horizontal masonry, and the gaps should be filled with mortar;

6, in order to avoid continuous masonry wall uneven deformation or cracks, should control the daily build by laying bricks or stones high. The lime-sand brick shall be controlled within 1.8m, the perlite block within 1.4m, and the daily construction height in rainy days shall not exceed1.2m. ..

Decoration is no small matter, and the design of hydropower decoration as small as the corner needs our heart to realize. This is the meaning of home improvement. We must pay attention to these precautions when decorating, so as to ensure that there will be no problems with our furniture, and then we can live in our beautiful new home after decoration!