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It must be done, and it will generally be strengthened, 2 ways, 3 ways. However, it is generally done after the main body of the structure is capped and the structure is relatively stable.
You can take a look. The American permanent condensate DPS waterproof material has many advantages: water-based permeable crystalline inorganic waterproof material, completely penetrates into the concrete, and does not scree the protective layer.
Do not sprinkle water for curing, do not stir, etc. After the construction is completed, it will not affect the post-sequence work. It is completely environmentally friendly, non-toxic, colorless and odorless, and will not age, and has a good life.
Anti-chloride ions, etc. The penetration depth is about 3 cm, and the impermeability level can reach more than S11. There are various national norms.
Acid, alkali and corrosion resistant.
The biggest difference with cement-based permeable crystalline waterproof materials is: do not sprinkle water, do not cure, do not stir, etc., spray directly. The construction is convenient and the effect is easy to guarantee. And it's perfectly fine without a protective layer.
There are also series products to meet the needs of different situations. Not expensive. Save the construction period and the cost is not high. It shrinks like concrete, so it is resistant to temperature changes. Does not absorb heat.
It's not wrong to know one more material. But now a lot of fakes are just that. It is said that it is an enterprise standard, a non-standard and the like. Judge for yourself.
I created: Encyclopedia: "American Perpetual Gel DPS", "Water-based Permeable Crystalline Inorganic Waterproof Materials", etc.
I wrote: "Construction Plan of DPS Waterproof Material for Perpetual Condensate in the United States" and so on.
How to judge the quality of the DPS waterproof material of the American permanent condensate liquid", etc.
Xiamen Yongjing DPS Waterproof Li Ji.
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The post-pouring belt is a post-pouring belt set up to solve the settlement difference between the main building and the podium of the high-rise building, which can only be poured after the main structure is finished and the settlement is basically stable.
The post-pouring belt temporarily divides the structure into several parts, and after the internal shrinkage of the components, the concrete of the construction joint is poured after a certain period of time, and the structure is connected into a whole zone. The pouring time of the post-pouring belt should be selected when the temperature is low.
It can be used to pour cement or cement mixed with a trace amount of aluminum powder concrete, and its strength grade should be one level higher than the strength of the component, so as to prevent cracks between the new and old concrete and the formation of weak parts. The location of the post-pouring belt should also consider the different consumption factors of the template and other measures.
Precautions. The pouring time of different types of post-pouring belt concrete is different: the telescopic post-pouring belt depends on the completion of the shrinkage of the first-poured part of the concrete, which is generally 60d after construction; After settlement, the pouring belt should be carried out after the settlement of the building is basically completed.
In some projects, the design unit has special requirements for the retention time of the post-pouring belt, and the concrete of the post-pouring belt should be poured according to the design requirements.
The concrete of the post-pouring belt must be prepared with non-shrinkage concrete, which can be prepared with expanded cement, or by adding admixtures with intumescent effect and ordinary cement, and the strength of the concrete should be increased by a grade, and its mix ratio is determined by the test.
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According to the national standard: the definition of the post-pouring belt in Article 1 of the Construction Code for Concrete Structure Engineering is: in order to adapt to the influence of factors such as environmental temperature changes, concrete shrinkage, and uneven settlement of the structure, the concrete belt with a certain width and after a certain period of time is reserved in the beam, slab (including the foundation bottom plate), wall and other structures.
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The so-called post-settlement pouring belt is set up to prevent uneven settlement between two buildings, and the concrete pouring of the post-settlement pouring belt can only be carried out after 7 days after the main body is poured and smashed.
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It should be more than 40m in the middle of the raft foundation to leave a settlement post-pouring belt, in order to prevent the uneven settlement of the main structure (generally two units). Wait until the end of the secondary structure before pouring concrete.
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<> pouring after settlement, pouring 60 days after capping. In terms of action and design, the post-pouring belt is divided into two categories, one is called the telescopic pouring belt, and the other is called the settlement post-pouring belt. The first type can only be poured two months after the completion of concrete pouring, and the second type can be poured two months after the completion of the capping of the general structure.
The time to pour the sedan car depends on what kind of post-pouring belt, and the post-pouring belt should be poured after the settlement is stable, and the specific situation depends on the situation.
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The practice of pouring the belt after non-settlement refers to the pouring belt carried out under the condition that the foundation has not undergone obvious settlement. The specific methods are as follows:1
Determine the location and size of the sprinkle tape. According to the design drawings and the actual situation of the site, determine the position and size of the pouring belt, including width, height and length. 2.
Basic processing. Carry out foundation treatment around the pouring belt position, including clearing the ground, grassing, digging pits, etc., to ensure that the foundation is flat and stable. 3.
Rebar processing and installation. According to the design requirements, the reinforcement is processed and reinforced, and then the reinforcement is installed to ensure that the position and spacing of the reinforcement meet the requirements. 4.
Template making and installation. According to the size and shape of the pouring belt, the corresponding template is made and installed. 5.
Pouring concrete. On the basis of steel bars and formwork, concrete is poured. When pouring, attention should be paid to controlling the fluidity of the concrete, ensuring that the concrete evenly fills the inside of the formwork, and carrying out compaction and smoothing.
6.Maintenance. After the concrete is poured, the maintenance is carried out, including timely watering, covering with moisturizing film, etc., to ensure the strength and stability of the concrete Huiming.
7.Mould removal and handling. After the concrete reaches the strength requirements, the mold lead blue travel board is dismantled and treated, the site is cleaned up, and the environment is kept clean and tidy.
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Dear and hello, in order to ensure the quality of concrete and the stability of the structure, the practice of non-settlement post-pouring strip should follow the following principles:1It is essential to have a good concrete pouring and curing plan, including pre-pour inspections and preparations, as well as planning during pouring, curing and inspection.
2.It is necessary to design the pouring process reasonably, such as selecting a low-concentration cement slurry for pre-priming to provide sufficient cohesion for the pouring layer. 3.
In order to ensure the compactness and uniformity of the pouring layer, new tools and materials should be used, including self-loading concrete mixer trucks, concrete transfer pumps and vibrating screens. 4.Strengthen the management and monitoring of concrete site works, including quality management and monitoring of raw materials and construction personnel, as well as on-site inspection and documentation.
5.In the process of pouring after non-settlement, it is necessary to find and deal with any quality problems or construction technical problems in a timely manner, and strengthen communication and coordination to ensure the stability and consistency of project quality. 6.
According to the specific engineering conditions and requirements, it is necessary to reasonably include the design concrete mix ratio and residence time to ensure the fluidity, slump, strength and durability of the concrete.
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Summary. Hello dear, it is possible to set the pouring belt on the laminated plate after settlement.
Ok thanks.
Hello dear, it is possible to set the pouring belt on the laminated plate after settlement.
The post-pouring belt is a post-pouring belt that is set from the foundation in order to resist the uneven settlement of the building during the construction period; The width difference is 800-1000, the vertical vertical is retained, and the lower part of the floor rent should be waterproofed; Generally, more than 40 days or according to the design requirements, the bird is poured with a higher grade of concrete, and the maintenance is strengthened. Plates, walls, and beams should be located in places with less stress in the post-pouring belt, and there is no difference in the setting, but it is best to connect up and down, and do not misplace.
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1.The main project was completed, 28 days.
2.Pouring belt after settlement: pouring is carried out after the main structure is completed and the settlement is stable.
3.Pouring belt after shrinkage: The concrete on both sides can be poured 60 days after molding.
The basement of high-rise buildings should not be equipped with deformation joints. When the length of the basement exceeds the maximum spacing of the expansion joint, the later strength of concrete can be considered to reduce the amount of cement; It is also possible to set up the post-construction pouring belt that penetrates the roof, bottom and wall board every 30m 40m.
In order to prevent the harmful cracks that may occur in the cast-in-place reinforced concrete structure due to temperature and uneven shrinkage in the building construction, in accordance with the requirements of the design or construction specifications, temporary construction joints are left at the corresponding positions of the foundation bottom plate, wall and beam, and the structure is temporarily divided into several parts, and after the internal shrinkage of the components, the concrete of the construction joint is poured after a certain period of time, and the structure is connected into a whole.
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According to relevant data, it generally takes more than 42 days for concrete to be basically stable; In addition, high-rise buildings should also consider the difference in foundation deformation, and the settlement tends to be basically stable (the settlement rate is less than, so when conditions permit, the longer the closed construction interval of the post-pouring belt, the better).
The post-pouring belt should be reserved according to the design requirements, and the concrete should be poured according to the closed time specified in it. Before pouring concrete, the surface of the post-pouring belt should be cleaned, and the steel bars should be sorted or welded. The concrete of the post-poured belt should meet the requirements of strength and impermeability; It is advisable to choose early strength, compensating shrinkage concrete pouring, and should be covered with surface curing.
Pouring belt after settlement.
It is retained during the construction period, in order to resist the uneven settlement of the building and set up the post-pouring belt from the foundation, the width is 800-1000, the vertical vertical retention, the basement part should take waterproof measures, usually more than 40 days or according to the design requirements time, the use of a higher grade of concrete pouring, and strengthen the maintenance. >>>More
The post-pouring belt is a temporary construction joint.
In order to prevent the harmful cracks that may occur in the cast-in-place reinforced concrete structure due to temperature and uneven shrinkage in the building construction, in accordance with the requirements of the design or construction specifications, temporary construction joints are left at the corresponding positions of the foundation bottom plate, wall and beam, and the structure is temporarily divided into several parts, and after the internal shrinkage of the components, the concrete of the construction joint is poured after a certain period of time, and the structure is connected into a whole. The pouring time of the post-pouring belt should be selected when the temperature is low, and the cement can be poured or the concrete mixed with a trace amount of aluminum powder in the cement, and its strength grade should be one level higher than the strength of the component, so as to prevent cracks between the new and old concrete, resulting in weak parts. The location of the post-pouring belt should also consider the different consumption factors of the template and other measures. >>>More
Post-pouring tape. It is a cast-in-place reinforced concrete structure in building construction to prevent it. >>>More
concretePost-pouring tapeThe concrete on both sides can be poured after 28 days, and the curing time is 14 days, and the concrete on both sides of the waterproof concrete can be poured after 42 days, and the curing time is 28 days。The pouring time of the post-pouring belt should be selected when the temperature is low, and the cement or cement can be mixed with a trace amount of aluminum powder concrete, and its strength grade should be one level higher than the strength of the component. >>>More
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