1. Project Overview
A lot in Nanhai District, Foshan City, covers an area of 24292.60m, with a construction area of 96058.58m, an above-ground construction area of 74419.08 m and an underground area of 21639.50m. Including 2 basement, part of the building with a basement, a total of six stories, with commercial and air pressure configuration facilities, a total of 597 households, a total of 713 parking Spaces.Floor construction in the concrete leveling construction after 21 d use curing agent again, if the construction earlier, then the curing agent can't exert its maximum effect, this is due to the poor effect of words, their concrete, strength fails to reach the cherry blossoms, and in the concrete is completely dry conditions using sealed curing agent, curing agent, will flow into the concrete, not on the surface strengthening effect.
2, sealing curing agent for wear-resistant floor operation process
(1) Clean up the base, and the ground concrete pouring. (2) if the concrete ground flatness is poor, should be leveling treatment, (3) sabu wear-resisting aggregate, and polishing treatment. (4) Use clean water curing 1-2 with sealing curing agent for wear-resistant floor construction. In this step of construction, the dust on the flat surface should be cleaned first, and the construction of clean water is cleaned, and then the use of sealing curing agent to show off the gap to seal treatment to improve the ground wear-resisting strength.
3. Key points of construction of concrete sealing curing agent
3.1 Requirements for construction materials
For sealing curing agent, different kinds of curing agent on the construction temperature, dosage and operation have different requirements, in the formal construction, to read the product instructions carefully, in accordance with the requirements of the construction operation, for concrete sealing curing agent, in fact, the total temperature should be controlled in 0-40 degrees, the construction area of 4.4-5.3m. In the actual construction, in accordance with the size of concrete air raid and construction temperature and li adjustment of construction dosage, when the temperature is low, the volatilization effect of sealing curing agent is poor. You can increase the area of use at this point. If the concrete void is small, then the loss of the dose is small, in order to exaggerate the construction area of sealing curing agent, in addition, can also take a lower water-cement ratio and collapse degree and other ways to reduce the number of concrete surface void.
3. Key points of construction of concrete sealing curing agent
3.1 Requirements for construction materials
For sealing curing agent, different kinds of curing agent on the construction temperature, dosage and operation have different requirements, in the formal construction, to read the product instructions carefully, in accordance with the requirements of the construction operation, for concrete sealing curing agent, in fact, the total temperature should be controlled in 0-40 degrees, the construction area of 4.4-5.3m. In the actual construction, in accordance with the size of concrete air raid and construction temperature and li adjustment of construction dosage, when the temperature is low, the volatilization effect of sealing curing agent is poor. You can increase the area of use at this point. If the concrete void is small, then the loss of the dose is small, in order to exaggerate the construction area of sealing curing agent, in addition, can also take a lower water-cement ratio and collapse degree and other ways to reduce the number of concrete surface void.
3.2 Concrete base construction
(1) Basic level work. Due to sealed concrete curing agent for liquid, do not have leveling effect, so need to finish the work on the ground leveling floor construction, have to undertake the construction, because of uneven foundation can make the seal curing agent could not in uniform distribution and level, when brushing, seal curing agent, after the ground vomiting is more pit slot, convex cannot be absorbed completely seal curing agent. In order to ensure the smooth construction to keep the basic level of flatness at 4mm. In this project, in order to improve the flatness of the base, the construction of laser leveling instrument as an auxiliary tool to complete the leveling and receiving operations.
(2) Grass-roots clean-up work. Relevant personnel to the existence of cement slag, oil and sand on the base clean up, so as to avoid the basic pores all open, to ensure that the concrete sealing curing agent better permeate to the ground. The use of clean water on the base of the ground is thoroughly cleaned, because the sealing curing agent is colorless and transparent, can penetrate into the concrete base, so in order to improve the quality of concrete surface construction, the sealing curing agent coating operation should be carried out in the ground without clear water state, so as to enhance the overall visual effect of the ground.
(3) Basic maintenance work. If the basic maintenance work is not done well after construction, the ground will crack, easy to be polluted. 5h after the end of the local surface base construction, sprinkler maintenance should be carried out, and the maintenance time should exceed 7d to ensure that the concrete surface has been in a wet state. After the completion of the basic operation, except for the maintenance and cutting joints required for operation, other personnel are prohibited to walk around [2]. It is worth noting that in the water curing stage, it is necessary to ensure that there are no impurities in the water, and it is forbidden to use dirty water, so as not to reduce the use effect of sealing curing agent.
(4) when the ground strength reaches C25, the old ground should be polished first, and the paint on the ground should be polished and scratched out, so as to provide a good construction environment for wear-resistant floor operations.
3.3 Construction requirements of concrete sealing curing agent
(1) the sealing curing agent should be coated on the surface of the floor, so that it penetrates into the base; On the base of the convex and penetration speed of the area should increase the dose of brushing, so as to ensure that the surface of the base can stay in the sealing curing agent in a humid state for 30min. To be 30 ~ 40min, most of the sealing curing agent can be absorbed by the surface of the base, in order to make the curing agent is completely absorbed, to constantly sweep away the remaining material in the low-lying or puddling, transplant it to the convex place. When the base becomes slippery, clean the whole with water, dry or remove the residue of sealing hardener on the surface of the floor. Under normal circumstances, the construction time is 1 ~ 3h, when the construction is completed and the ground is completely dry after the passage. It is important to ensure that the floor is clean and free from water or grease within 48 hours of completion of construction.
(2) to do a good job in floor maintenance. Sealing curing agent and concrete ground chemical reaction, in order to accelerate the chemical reaction, improve floor gloss, to use the ground cleaning machine every week, and this way can also enhance the effect of ground impermeability. In addition, because the acidic solution will have a corrosive effect on the concrete floor and reduce the glossiness of the floor, it is necessary to use slightly alkaline water for floor cleaning operations. No waxing or other cementing agent is allowed on the floor surface. 4 wear-resistant floor performance test
First, hardness testing. After 1 and 4 weeks of concrete sealing curing agent operation, the ground should be rubbed with copper or iron sheets and compared with the untreated ground. It can be seen from the comparison that the hardness of the treated ground increases greatly and there is no obvious scratch. The untreated ground not only has scratches, but also contains dust. Secondly, strength test. After four weeks, the rebound instrument was used to test the ground. By comparison, the ground strength increased by 13.3%, and by 30% after two months. Finally, surface quality. Through the naked eye and touch test, the surface of the floor is smooth and smooth. After the use of sealing curing agent, the water retention capacity is improved, and the permanent curing effect can be realized. There is no cracking problem, and the floor quality is high.
5 conclusion
When concrete sealing curing agent is applied in floor construction, the dust and oil pollution on the surface of the base should be cleaned up first, and the leveling operation should be done well. The dosage can be adjusted in accordance with the construction environment, and the construction maintenance effect should be paid attention to, so as to improve the quality of floor construction.
