Construction method for polished concrete terrace

Abstract

The invention provides a polished concrete floor construction method, which belongs to the technical field of polished concrete floor processing, and comprises the following steps: grinding a concrete floor by using a diamond sheet, cleaning and dedusting the ground concrete floor, and then brushing a compacting agent on the concrete floor; a resin sheet is used for grinding the concrete floor obtained through treatment, the ground concrete floor is cleaned and dedusted, and then the concrete floor is coated with a densifying agent; and carrying out grinding treatment on the treated concrete floor by using a resin sheet with relatively high mesh number, cleaning and dedusting, and brushing a densifying agent on the concrete floor. According to the construction method for the polished concrete terrace, on the basis that high-quality base concrete is guaranteed, the steps of grinding and polishing are optimized, and a good humidity construction environment is kept; the overall quality and strength of the floor are improved while the attractiveness and the use function of the floor are guaranteed, and the influence of dust on the environment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of polished concrete floor processing, and in particular to a polished concrete floor construction method. Background Art

[0002] Polished concrete floor is a hardened floor with cement as the main body. It is dust-free, dense, high-strength, high-wear-resistant, impermeable, anti-freeze-thaw cycle, anti-aging, corrosion-resistant, environmentally friendly, and easy to maintain. Polished concrete floor was first developed and applied abroad. It is called concrete sealer and curing agent floor in my country and has a history of several decades. At the beginning of the 21st century, foreign polished concrete products have successively landed in the Chinese market, and have experienced continuous development and independent research and development of domestic brands. Nowadays, polished concrete has gradually been accepted by people and has become one of the mainstreams of floor renovation and design.

[0003] Densifiers are often needed in the process of polishing concrete floor. Among them, colloidal silica is a new type of concrete sealing, wind-dust wear-resistant densifier. It is a new generation of lithium-ion water-based products, colorless, odorless, non-toxic and non-flammable. It effectively penetrates into the concrete 3 to 5 mm, and undergoes a series of complex chemical reactions with the free calcium and magnesium ions in the concrete, so that the various components in the concrete are solidified into a solid entity, thus obtaining a dust-free and dense whole, permanently avoiding the precipitation of concrete dust from the surface, and effectively improving the strength, density and wear resistance of the concrete. Colloidal silica densifiers are mainly used in wear-resistant floors, polished concrete floors, terrazzo floors, self-leveling cement floors and other cement-based floors or facades.

[0004] While the existing polished concrete floor technology improves the aesthetics and functionality of the floor, it also has some disadvantages:

[0005] 1. High ground quality requirements: Only high-quality concrete floors can withstand the grinding and polishing process. If the concrete quality of the ground is poor, the water content is too high or it is too fragile, it is easy to crack during the grinding and polishing process;

[0006] 2. Difficulty in construction: Professional machines are required to grind and polish concrete floors, and uniform pressure and load are required during the operation, otherwise additional pressure and load will be placed on the floor, causing cracks;

[0007] 3. Environmental factors have a great impact: During the grinding and polishing process, changes in temperature and humidity will cause impact and deformation on the ground, leading to cracking. In addition, incomplete water washing or insufficient drying time will also cause pressure on the ground;

[0008] 4. Impact on the environment: During the construction process, noise and dust may be generated, which will have a certain impact on the surrounding environment. Summary of the invention

[0009] The purpose of the present invention is to provide a method for energy-saving evaluation and operation strategy optimization of a central air-conditioning system to solve the deficiencies of the above-mentioned prior art.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0011] A polished concrete floor construction method comprises the following steps:

[0012] S10: Grind the concrete floor with a diamond sheet, clean and remove dust from the ground concrete floor, and then apply a densifier on the concrete floor;

[0013] S20: grinding the concrete floor obtained by the treatment in S10 with a resin sheet, cleaning and removing dust from the ground concrete floor, and then applying a densifier on the concrete floor;

[0014] S30: grinding the concrete floor obtained by the treatment in S20 using resin sheets with a mesh number higher than that of the resin sheets in S20, cleaning and removing dust from the ground concrete floor, and then applying a densifier on the concrete floor;

[0015] S40: grinding the concrete floor obtained by the treatment in S30 with a resin sheet having a higher mesh number than the resin sheet in S30, and then polishing the concrete floor with a mirror polishing sheet;

[0016] S50: applying a high gloss protective agent to the concrete floor treated in S40.

[0017] Preferably, the grinding process of the concrete floor using the diamond sheet in S10 includes:

[0018] At least three sets of diamond blades with different mesh sizes are used to grind the concrete floor. During the grinding process, a uniform straight-line advance form is adopted, firstly overlapping and covering the concrete floor horizontally, and then overlapping and covering the concrete floor vertically.

[0019] Preferably, the step of performing dust removal on the ground concrete floor in S10 includes:

[0020] Use a hose or dry vacuum to clean dust from concrete floors.

[0021] Preferably, applying a densifier to the concrete floor in S10 comprises:

[0022] When applying the densifier, keep the concrete floor moist with the densifier for more than 30 minutes according to the prescribed amount, and extend the aforementioned moistening time when the construction temperature is low;

[0023] When the concrete floor becomes slippery and thick, spray the floor with mist water to dilute the densifier; when the concrete floor becomes dry, brush it back and forth with a brush to allow the concrete floor to fully absorb the densifier;

[0024] When the concrete floor densifier becomes smooth and thick again, the concrete floor must not be wetted by water within 12 hours after the construction is completed.

[0025] Preferably, the densifier applied to the concrete floor in S20 and S30 includes:

[0026] When applying the densifier, keep the concrete floor moist with the densifier for more than 30 minutes according to the prescribed amount, and extend the aforementioned moistening time when the construction temperature is low;

[0027] When the concrete floor becomes slippery and thick, spray the floor with mist water to dilute the densifier; when the concrete floor becomes dry, brush it back and forth with a brush to allow the concrete floor to fully absorb the densifier;

[0028] When the concrete floor densifier becomes smooth and thick again, the concrete floor must not be wetted by water within 24 hours after the construction is completed.

[0029] Preferably, the grinding processes in S20, S30 and S40 all include:

[0030] During the grinding process, a uniform speed straight line is adopted, firstly overlapping and covering the concrete floor horizontally, and then overlapping and covering the concrete floor vertically.

[0031] Preferably, the step of polishing the concrete floor using a mirror polishing sheet in S40 includes:

[0032] During the polishing process, a uniform speed and straight line forward method is adopted, firstly overlapping and covering the concrete floor horizontally, and then overlapping and covering the concrete floor vertically.

[0033] Preferably, the polished concrete floor construction method further comprises:

[0034] Before S10, the poured concrete floor is ground using a terrazzo machine until stones with a size of 0.1 to 1 cm appear.

[0035] It can be seen from the above technical scheme that the polished concrete floor construction method of the present invention optimizes the grinding and polishing steps on the basis of ensuring high-quality base concrete, and maintains a good humidity construction environment; while ensuring the aesthetics and usability of the floor, it improves the overall quality and strength of the floor and reduces the impact of dust on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The present invention provides a flow chart of the construction method. DETAILED DESCRIPTION

[0037] A preferred embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0038] It should be noted that before the construction of polished concrete floor, the base concrete needs to be poured, and the base concrete has the following requirements:

[0039] (1) The concrete grade should be C20 or above;

[0040] (2) The slump of concrete should be controlled at 8 cm at best and should not exceed 15 cm at most;

[0041] (3) The maximum particle size of concrete aggregate shall not exceed 2.5 cm, and the mud content shall be less than 1%;

[0042] (4) Low-heat cement and air-entraining agents cannot be used;

[0043] (5) The pouring, batch construction, compaction and leveling of concrete should be planned in advance and the pouring of the concrete flat base surface should be completed in accordance with normal procedures.

[0044] In addition, the starting point of the floor construction interface must also meet the following conditions:

[0045] (1) Clean up the residues on the wear-resistant floor, such as cement slag, paint blocks, garbage, dust, etc.;

[0046] (2) The dosage of concrete densifier is 0.3 kg / ㎡ for each coat (two coats for construction);

[0047] (3) Roll or spray the concrete densifier to soak the floor surface to be treated and make it fully wet. At the same time, use a brush or floor scrubber to continuously brush the floor to open the pores on the concrete surface and allow it to penetrate into the concrete.

[0048] (4) After 30 to 60 minutes, the ground becomes slippery and thick. This is the result of the reaction between the concrete densifier and the floor.

[0049] (5) Then use water mist to moisten the sticky surface so that the concrete densifier product can penetrate into the concrete. Continue to brush the floor with a brush or floor scrubber until the floor becomes smooth and sticky again;

[0050] (6) After another 30 to 60 minutes (depending on the situation, it is best when the surface moisture has not dried yet), rinse the surface with water and use a floor scrubber and a vacuum cleaner to clean the surface to remove all surface stains and residual concrete densifier. This procedure may need to be done twice to allow the floor to dry naturally. After 6 hours, it can be released for use;

[0051] (7) After 24 hours of completion, use a resin abrasive disc to polish the surface 8-12 times from 1000-3000 mesh, and then apply floor protection liquid to the surface to protect the newly treated floor from friction and damage. The protective layer will disappear automatically during the use of the floor. When the protective layer disappears, the treated floor will immediately show a charming luster. The longer the use time, the better the sensory effect.

[0052] Reference Figure 1 The present embodiment provides a method for constructing a polished concrete floor, comprising the following steps:

[0053] S00: Base grinding: Use a terrazzo machine to grind the poured concrete until 0.1-1 cm stones appear. It should be noted that this process needs to be determined based on the actual situation of the concrete floor.

[0054] S10: Coarse grinding of diamond sheet: Use 30#, 60#, and 120# diamond sheets respectively, and move forward in a straight line at a uniform speed. First, grind along the horizontal overlap of the concrete floor, and then grind along the vertical overlap of the concrete floor to repair the scratches on the floor caused by the terrazzo machine. When grinding, grind in an orderly staggered manner in a tic-tac-toe pattern to fully open the concrete pores, so as to facilitate the next step. It should be noted that the mesh size of the diamond sheet can be selected according to the ground conditions.

[0055] Cleaning and dust removal: Before using the densifier, the concrete floor must be treated first. The concrete floor must be cleaned before the densifier can be applied. The specific cleaning method can be to use a water pipe to connect to an external water source for cleaning, or to use a dry grinding vacuum cleaner to deal with dust. It should be noted that when using an external water pipe for cleaning, the construction site must provide sufficient water; when using a dry grinding vacuum cleaner, it is necessary to consider the adverse effects of dry grinding throughout the process on the aesthetics.

[0056] Applying densifier: a. When applying the densifier, keep the concrete floor moistened with the densifier for more than 30 minutes according to the prescribed amount, and extend the aforementioned moistening time when the construction temperature is low;

[0057] b. When the concrete floor becomes slippery and thick, spray the floor with mist water to dilute the densifier; when the concrete floor becomes dry, brush it back and forth with a brush to allow the concrete floor to fully absorb the densifier;

[0058] c. When the concrete floor densifier becomes smooth and thick again, the concrete floor must not be wetted by water within 12 hours until the construction is completed.

[0059] S20: Preliminary fine grinding of resin sheet: a. Use No. 1 resin sheet, move forward in a straight line at a uniform speed, first overlap and cover along the horizontal surface of the concrete floor, then overlap and cover along the vertical surface of the concrete floor, and grind in an orderly staggered manner with the tic-tac-toe pattern in S10 above, so as to effectively remove the scratches on the 120# diamond sheet, so as to facilitate the next step. It should be noted that this step can be adjusted according to the actual situation, that is, if there are scratches in the grinding in the above S10, select this treatment, and if there are no scratches, do not select this treatment;

[0060] b. Use No. 2 resin sheet, also at a uniform speed and in a straight line, first overlap and cover along the concrete floor horizontally, then overlap and cover along the concrete floor vertically, that is, orderly and staggered grinding in the same way as the S10 tic-tac-toe pattern mentioned above, to effectively remove the scratches produced by the 30# resin sheet, so as to facilitate the next step. Similarly, this step can also be adjusted according to actual needs.

[0061] Cleaning and dust removal: The ground must be prepared before using the densifier. The concrete floor must be cleaned before the densifier can be applied. Similarly, the specific cleaning method can be to use a water pipe to connect to an external water source for cleaning, or to use a dry grinding vacuum cleaner for dust removal.

[0062] Applying densifier: a. When applying the densifier, keep the concrete floor moistened with the densifier for more than 30 minutes according to the prescribed amount, and extend the aforementioned moistening time when the construction temperature is low;

[0063] b. When the concrete floor becomes slippery and thick, spray the floor with mist water to dilute the densifier; when the concrete floor becomes dry, brush it back and forth with a brush to allow the concrete floor to fully absorb the densifier;

[0064] c. When the concrete floor densifier becomes smooth and thick again, the concrete floor must not be wetted by water within 24 hours after the construction is completed.

[0065] S30: Resin sheet fine grinding: Use No. 3, No. 4, and No. 500 resin sheets respectively, and move forward in a straight line at a uniform speed. First, overlap and cover along the horizontal direction of the concrete floor, and then overlap and cover along the vertical direction of the concrete floor, that is, the orderly and staggered grinding in the same way as the aforementioned S20 tic-tac-toe pattern.

[0066] It should be noted that the mesh number of the resin sheet in step S30 is higher than the mesh number of the resin sheet in step S20.

[0067] Cleaning and dust removal: The ground must be prepared before using the densifier. The concrete floor must be cleaned before the densifier can be applied. Similarly, the specific cleaning method can be to use a water pipe to connect to an external water source for cleaning, or to use a dry grinding vacuum cleaner for dust removal.

[0068] Applying densifier: a. When applying the densifier, keep the concrete floor moistened with the densifier for more than 30 minutes according to the prescribed amount, and extend the aforementioned moistening time when the construction temperature is low;

[0069] b. When the concrete floor becomes slippery and thick, spray the floor with mist water to dilute the densifier; when the concrete floor becomes dry, brush it back and forth with a brush to allow the concrete floor to fully absorb the densifier;

[0070] c. When the concrete floor densifier becomes smooth and thick again, the concrete floor must not be wetted by water within 24 hours after the construction is completed.

[0071] S40: Resin sheet fine grinding: Use 1000#, 2000#, and 3000# resin sheets respectively, and move forward in a straight line at a uniform speed. First, overlap and cover along the concrete floor horizontally, and then overlap and cover along the concrete floor vertically, that is, the orderly and staggered grinding in the tic-tac-toe pattern of S30 mentioned above;

[0072] It should be noted that the mesh number of the resin sheet in step S40 is higher than the mesh number of the resin sheet in step S30.

[0073] Then use 4# and 5# mirror polishing pads to polish the treated concrete floor, also using a uniform speed and straight line forward, first overlapping and covering along the horizontal direction of the concrete floor, and then overlapping and covering along the vertical direction of the concrete floor, that is, covering and grinding in an orderly and staggered manner in a tic-tac-toe pattern.

[0074] S50: applying a high gloss protective agent to the concrete floor treated in S40.

[0075] In addition, after the above-mentioned construction is completed, it is necessary to ensure that the Mohs hardness of the concrete surface reaches 7 or above, and it must meet the requirements of being dust-free and sand-free, and the appearance must show reflections from a distance.

[0076] At the same time, self-ground maintenance meets the following requirements:

[0077] a. Do not wax or apply other sealants on the surface;

[0078] b. To achieve better results, clean the floor regularly (2 to 4 times / week) using a heavy (about 20kg) cleaning machine equipped with a black fiber grinding pad;

[0079] c. Always have high-quality oil decomposers on hand to clean oil and grease stains;

[0080] d. Tire marks left by car rolling can be removed by using a cleaning agent containing high citric acid esters;

[0081] e. If the glossiness of the product decreases due to wear and tear after long-term use, Party A can repair and maintain it at a fee.

[0082] The above-described embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A method for constructing a polished concrete floor, characterized in that: The following steps are involved: S10: Grind the concrete floor with a diamond sheet, clean and remove dust from the ground concrete floor, and then apply a densifier on the concrete floor; S20: grinding the concrete floor obtained by the treatment in S10 with a resin sheet, cleaning and removing dust from the ground concrete floor, and then applying a densifier on the concrete floor; S30: grinding the concrete floor obtained by the treatment in S20 using resin sheets with a mesh number higher than that of the resin sheets in S20, cleaning and removing dust from the ground concrete floor, and then applying a densifier on the concrete floor; S40: grinding the concrete floor obtained by the treatment in S30 with a resin sheet having a higher mesh number than the resin sheet in S30, and then polishing the concrete floor with a mirror polishing sheet; S50: applying a high gloss protective agent to the concrete floor treated in S40.

2. The polished concrete floor construction method according to claim 1, characterized in that: The use of diamond plates in S10 to grind concrete floors includes: At least three sets of diamond blades with different mesh sizes are used to grind the concrete floor. During the grinding process, a uniform straight-line advance form is adopted, firstly overlapping and covering the concrete floor horizontally, and then overlapping and covering the concrete floor vertically.

3. The polished concrete floor construction method according to claim 2, characterized in that: The dust removal process for the ground concrete floor in S10 includes: Use a hose or dry vacuum to clean dust from concrete floors.

4. The polished concrete floor construction method according to claim 3 is characterized in that: S10 is used for concrete floor densifiers including: When applying the densifier, keep the concrete floor moist with the densifier for more than 30 minutes according to the prescribed amount, and extend the aforementioned moistening time when the construction temperature is low; When the concrete floor becomes slippery and thick, spray the floor with mist water to dilute the densifier; when the concrete floor becomes dry, brush it back and forth with a brush to allow the concrete floor to fully absorb the densifier; When the concrete floor densifier becomes smooth and thick again, the concrete floor must not be wetted by water within 12 hours after the construction is completed.

5. The polished concrete floor construction method according to claim 1, characterized in that: The densifiers for concrete floor application in S20 and S30 include: When applying the densifier, keep the concrete floor moist with the densifier for more than 30 minutes according to the prescribed amount, and extend the aforementioned moistening time when the construction temperature is low; When the concrete floor becomes slippery and thick, spray the floor with mist water to dilute the densifier; when the concrete floor becomes dry, brush it back and forth with a brush to allow the concrete floor to fully absorb the densifier; When the concrete floor densifier becomes smooth and thick again, the concrete floor must not be wetted by water within 24 hours after the construction is completed.

6. The polished concrete floor construction method according to claim 1, characterized in that: The grinding processes in S20, S30 and S40 all include: During the grinding process, a uniform speed straight line is adopted, firstly overlapping and covering the concrete floor horizontally, and then overlapping and covering the concrete floor vertically.

7. The polished concrete floor construction method according to claim 1, characterized in that: The step of polishing the concrete floor using the mirror polishing sheet in S40 includes: During the polishing process, a uniform speed and straight line forward method is adopted, firstly overlapping and covering the concrete floor horizontally, and then overlapping and covering the concrete floor vertically.

8. The polished concrete floor construction method according to claim 1, characterized in that: The polished concrete floor construction method also includes: Before S10, the poured concrete floor is ground using a terrazzo machine until stones with a size of 0.1 to 1 cm appear.

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