CN114278046A - Alkali-returning construction process for pre-waterproof grindstone precast slab - Google Patents
Alkali-returning construction process for pre-waterproof grindstone precast slab Download PDFInfo
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- CN114278046A CN114278046A CN202111566170.2A CN202111566170A CN114278046A CN 114278046 A CN114278046 A CN 114278046A CN 202111566170 A CN202111566170 A CN 202111566170A CN 114278046 A CN114278046 A CN 114278046A
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Abstract
The invention discloses a construction process for alkali return of a pre-waterproof grindstone precast slab, belonging to the technical field of architectural decoration and comprising the following steps: 1) preparing before paving: before paving, plain cement paste is swept on the ground; 2) paving and pasting construction: paving dry hard cement mortar, pouring and paving the cement mortar by using white cement, and brushing protective agent on the back and the side of the stone before paving; 3) joint cutting construction: uniformly slotting the stone joints by using a slotting machine, digging out dirt in the slots by using a brush or a cutter, and completely sucking the dirt in the slots by using a water-absorbing dust suction machine; according to the invention, the protective agent is coated on the back and the side of the stone before installation, the coated protective agent permeates into the surface layer of the stone to form a closed barrier, so that the precipitation of moisture and alkali in mortar is prevented, the path of a saltpetering phenomenon is cut off, and the surface protective agent is used for sealing gaps among stone structures, so that the purposes of water resistance, pollution prevention and corrosion prevention are achieved, the reworking treatment is not required, the time and labor are saved, and the prefabrication efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of architectural decoration, and particularly relates to a construction process for alkali return of a pre-waterproof grindstone precast slab.
Background
The prefabricated terrazzo slab (also called "terrazzo") is made up by mixing aggregate of broken stone, glass and quartz stone with cement binder, making concrete product, and grinding and polishing its surface. The traditional construction process comprises the following steps: 1. cleaning the ground and sweeping floating ash; 2. determining a horizontal marking line; 3. cement yellow sand mixed ash and cement slurry (white cement for cement slurry) with stirring element; 4. before paving, watering and wetting the ground to ensure that the mortar has better bonding force (because workers save trouble and directly water the ground, a large amount of water is accumulated on the ground); 5. paving mortar, and leveling the mortar according to a horizontal line; 6. leveling post-pouring cement slurry, and drawing a groove; 7. paving and sticking the stone, placing a horizontal ruler on the surface of the stone, and beating the stone by a rubber hammer until the surface of the stone is consistent with the horizontal line and the horizontal ruler is horizontal; 8. after the stone is paved, the garbage on the surface of the stone is cleaned in time for protection; 9. uncovering the protective film for ventilation before polishing; 10. slotting and ventilating, and cleaning floating ash; 11. glue supplementing; 12. rough grinding (grinding with a large amount of water), cleaning up the waste water after grinding, fine grinding (grinding without bottom crossing and detection of a neutral chemical solution); 13. crystallization-polishing.
At present, after polishing and crystallization of the prefabricated terrazzo plate ground construction, the white alkali return condition often appears on the surface of the prefabricated terrazzo plate, and the on-site alkali return is returned from the construction joint reserved by the plate. Because the stone contains salt, the content of the saline-alkali components is high, and if the stone is contacted with a large amount of water during crystallization, the stone is dissolved and separated out, so that the alkali is returned. The remedy measures adopted in the later period generally are that a layer of crystals on the surface is firstly ground off, the crystals are treated by using liquid medicine and return to alkali, and the crystals are polished again after the liquid medicine is treated.
Disclosure of Invention
The invention aims to: the alkali-returning construction process for the prefabricated waterproof terrazzo prefabricated plate aims to solve the problems that after the construction, polishing and crystallization of the prefabricated terrazzo ground are finished, the white alkali-returning condition often occurs on the surface of the prefabricated terrazzo plate, so that the alkali-returning treatment, the material consumption waste, the labor consumption and the prefabrication efficiency are low.
In order to achieve the above purpose, the invention adopts the following steps:
1) preparing before paving: before paving, plain cement paste is swept on the ground;
2) paving and pasting construction: paving dry hard cement mortar, pouring and paving the cement mortar by using white cement, and brushing protective agent on the back and the side of the stone before paving;
3) joint cutting construction: uniformly slotting the stone joints by using a slotting machine, digging out dirt in the slots by using a brush or a cutter, and completely sucking the dirt in the slots by using a water-absorbing dust suction machine;
4) and (3) gap filling construction: preparing a polishing and pollution-resistant reactive resin flexible joint mixture which has the same color as the stone, scraping the joint mixture by using a small lime cutter, aligning the joint mixture with a gap, cutting the gap at an angle of 45 degrees, pressing the joint mixture into the joint, scraping redundant adhesive to enable the colloid to be about 1mm higher than the surface of the stone, and waiting for the colloid to be naturally cured;
5) coarse grinding construction: the method comprises the following steps of using a heavy retreading machine with more than 12 grinding heads, adding water into 50#, 150#, 300# cut grinding sheets in sequence for grinding step by step, grinding and leveling cut, serious scratches and the like of terrazzo formed due to processing size error, deformation, construction paving and the like, leveling wall corners and the like which cannot be ground by the machine by using a hand grinder, uniformly and integrally grinding the ground, not intensively grinding in a small area too much, avoiding unevenness of the ground caused by uneven grinding, cleaning ground stains by using a water suction machine in time after finishing grinding, inspecting a finished area after finishing grinding, repairing defects such as damage, edge breakage, corner fall, cracks and the like, and inspecting the flatness, timely cleaning away slurry, water and the like generated in grinding, and drying and protecting the ground after finishing grinding and polishing to avoid pollution and scratches;
6) fine grinding construction: according to the sequence of 500#, 800# and 1000# grinding sheets, adding water to uniformly grind step by step, wherein the grinding trace of the previous grinding step is eliminated by the next grinding step;
7) fine grinding and polishing: after fine grinding and air drying from No. 500, dry grinding without adding water until crystallization is completed, constructing in place at one time, and preventing scratching because no dust and sand are on the ground;
8) crystal face treatment construction: and polishing the surface of the inorganic artificial stone by using a crystal paste until the glossiness reaches over 75(Gs) by using a stone crystal face machine cleaning pad with the weight not less than 70kg and the rotating speed of about 175/min.
As a further description of the above technical solution:
in the step 1), the water-cement ratio of the plain cement slurry is 1: 2.
as a further description of the above technical solution:
in the step 2), the mixing proportion of the dry and hard cement mortar is 1: 3, wherein the sand is medium coarse river sand, and the medium coarse river sand is standard of wetting, loosening, holding, agglomerating and no bleeding.
As a further description of the above technical solution:
in the step 3), the slitting machine uses a cutting blade with the thickness of 0.3mm-0.5 mm.
As a further description of the above technical solution:
in the step 4), the nursing construction site is kept well ventilated without dust and sundries, and the proper construction temperature of the construction site is 5-35 ℃.
As a further description of the above technical solution:
in the step 5), a special cutting grinding piece for marble or granite is used, so that chicken claw marks are avoided in the later stage.
As a further description of the above technical solution:
in the step 7), the rotation speed of the dry grinding machine is 1000-1200 revolutions, so as to avoid over-high temperature.
As a further description of the above technical solution:
and in the step 8), the narrow corner is processed by using a hand-held machine and matching with a nylon cushion.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the protective agent is coated on the back and the side of the stone before installation, the coated protective agent permeates into the surface layer of the stone to form a closed barrier, so that the precipitation of moisture and alkali in mortar is prevented, the path of a saltpetering phenomenon is cut off, and the surface protective agent is used for sealing gaps among stone structures, so that the purposes of water resistance, pollution prevention and corrosion prevention are achieved, the reworking treatment is not required, the time and labor are saved, and the prefabrication efficiency is improved.
2. In the invention, the environment is kept dry, and the crystallization material with lower water content is adopted to replace materials such as water aqua, powder and the like, so that the contact between the stone and water in the polishing process is reduced.
Drawings
FIG. 1 is a flow chart of a construction process for preventing alkali return of a terrazzo precast slab.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
s01: preparing before paving: spreading plain cement paste on the ground before paving, wherein the water-cement ratio of the plain cement paste is 1: 2;
s02: paving and pasting construction: paving dry and hard cement mortar, and pouring and paving the dry and hard cement mortar by using white cement, wherein the mixing ratio of the dry and hard cement mortar is 1: 3, the sand is medium coarse river sand which is held to be agglomerated by a wet loose hand without bleeding as a standard, and the back and the side of the stone are coated with a protective agent before paving;
s03: joint cutting construction: uniformly slotting the stone joints by using a slotting machine, using a cutting blade with the thickness of 0.3mm, using a brush or a cutter to dig out dirt in the joints, and completely sucking the dirt in the joints by using a water absorption dust suction machine;
s04: and (3) gap filling construction: preparing a burnable and pollution-resistant reactive resin flexible joint mixture which has the same color as the stone, scraping the joint mixture by using a small ash knife, aligning the joint mixture with a gap, placing the joint mixture at an angle of 45 degrees, pressing the joint mixture into the gap, scraping off excessive glue to ensure that the glue is about 1mm higher than the surface of the stone, waiting for the glue to be naturally cured, maintaining good ventilation and no dust and sundries on a construction site, and ensuring that the proper construction temperature of the construction site is 5-35 ℃;
s05: coarse grinding construction: the method comprises the following steps of using a heavy retreading machine with more than 12 grinding heads, using special cutting grinding sheets for marble or granite, adding water into the cutting grinding sheets with 50#, 150#, 300# and the like in sequence for gradual grinding, grinding and leveling cut edges, serious scratches and the like formed by the terrazzo due to processing size errors, deformation, construction paving and the like, leveling wall corners and the like which cannot be ground by the machine by using a hand grinder, uniformly and integrally grinding the ground, cleaning ground stains by using a water suction machine in time after finishing grinding each time, inspecting a finished area after finishing grinding, repairing defects such as damage, edge breakage, corner fall, cracks and the like, and inspecting the flatness;
s06: fine grinding construction: according to the sequence of 500#, 800# and 1000# grinding sheets, adding water to uniformly grind step by step, wherein the grinding trace of the previous grinding step is eliminated by the next grinding step;
s07: fine grinding and polishing: after fine grinding and air drying from 500#, the rotation speed of a dry grinding machine is 1000 revolutions, and dry grinding is carried out without adding water until crystallization is constructed in place at one time;
s08: crystal face treatment construction: polishing the surface of the inorganic artificial stone by using a crystal paste and using a stone crystal face machine matched with a scouring pad with the weight not less than 70kg and the rotating speed of about 175/min until the glossiness reaches over 75(Gs), wherein the narrow edge part is processed by using a hand machine matched with a nylon pad.
Example 2:
s01: preparing before paving: spreading plain cement paste on the ground before paving, wherein the water-cement ratio of the plain cement paste is 1: 2;
s02: paving and pasting construction: paving dry and hard cement mortar, and pouring and paving the dry and hard cement mortar by using white cement, wherein the mixing ratio of the dry and hard cement mortar is 1: 3, the sand is medium coarse river sand which is held to be agglomerated by a wet loose hand without bleeding as a standard, and the back and the side of the stone are coated with a protective agent before paving;
s03: joint cutting construction: uniformly slotting the stone joints by using a slotting machine, using a cutting blade with the thickness of 0.5mm, using a brush or a cutter to dig out dirt in the joints, and completely sucking the dirt in the joints by using a water absorption dust suction machine;
s04: and (3) gap filling construction: preparing a burnable and pollution-resistant reactive resin flexible joint mixture which has the same color as the stone, scraping the joint mixture by using a small ash knife, aligning the joint mixture with a gap, placing the joint mixture at an angle of 45 degrees, pressing the joint mixture into the gap, scraping off excessive glue to ensure that the glue is about 1mm higher than the surface of the stone, waiting for the glue to be naturally cured, maintaining good ventilation and no dust and sundries on a construction site, and ensuring that the proper construction temperature of the construction site is 5-35 ℃;
s05: coarse grinding construction: the method comprises the following steps of using a heavy retreading machine with more than 12 grinding heads, using special cutting grinding sheets for marble or granite, adding water into the cutting grinding sheets with 50#, 150#, 300# and the like in sequence for gradual grinding, grinding and leveling cut edges, serious scratches and the like formed by the terrazzo due to processing size errors, deformation, construction paving and the like, leveling wall corners and the like which cannot be ground by the machine by using a hand grinder, uniformly and integrally grinding the ground, cleaning ground stains by using a water suction machine in time after finishing grinding each time, inspecting a finished area after finishing grinding, repairing defects such as damage, edge breakage, corner fall, cracks and the like, and inspecting the flatness;
s06: fine grinding construction: according to the sequence of 500#, 800# and 1000# grinding sheets, adding water to uniformly grind step by step, wherein the grinding trace of the previous grinding step is eliminated by the next grinding step;
s07: fine grinding and polishing: after fine grinding and air drying from 500#, the rotation speed of a dry grinding machine is 1200 revolutions, and dry grinding is carried out without adding water until crystallization is constructed in place at one time;
s08: crystal face treatment construction: polishing the surface of the inorganic artificial stone by using a crystal paste and using a stone crystal face machine matched with a scouring pad with the weight not less than 70kg and the rotating speed of about 175/min until the glossiness reaches over 75(Gs), wherein the narrow edge part is processed by using a hand machine matched with a nylon pad.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A pre-waterproof grindstone precast slab alkali-returning construction process is characterized in that: the method comprises the following steps:
1) preparing before paving: before paving, plain cement paste is swept on the ground;
2) paving and pasting construction: paving dry hard cement mortar, pouring and paving the cement mortar by using white cement, and brushing protective agent on the back and the side of the stone before paving;
3) joint cutting construction: uniformly slotting the stone joints by using a slotting machine, digging out dirt in the slots by using a brush or a cutter, and completely sucking the dirt in the slots by using a water-absorbing dust suction machine;
4) and (3) gap filling construction: preparing a polishing and pollution-resistant reactive resin flexible joint mixture which has the same color as the stone, scraping the joint mixture by using a small lime cutter, aligning the joint mixture with a gap, cutting the gap at an angle of 45 degrees, pressing the joint mixture into the joint, scraping redundant adhesive to enable the colloid to be about 1mm higher than the surface of the stone, and waiting for the colloid to be naturally cured;
5) coarse grinding construction: the method comprises the following steps of using a heavy retreading machine with more than 12 grinding heads, sequentially adding water into 50#, 150#, 300# cut grinding sheets for grinding step by step, grinding and leveling cut, serious scratch and the like formed by a terrazzo due to machining size error, deformation, construction paving and the like, leveling wall corners and the like which cannot be ground by the machine by using a hand grinder, uniformly and integrally grinding the ground, cleaning soil on the ground by using a water suction machine in time after finishing grinding each time, inspecting a finished area after finishing grinding, repairing defects such as breakage, edge breakage, corner fall, cracks and the like, and inspecting the flatness;
6) fine grinding construction: according to the sequence of 500#, 800# and 1000# grinding sheets, adding water to uniformly grind step by step, wherein the grinding trace of the previous grinding step is eliminated by the next grinding step;
7) fine grinding and polishing: after fine grinding and air drying from No. 500, dry grinding without adding water until crystallization is completed, and constructing in place at one time;
8) crystal face treatment construction: and polishing the surface of the inorganic artificial stone by using a crystal paste until the glossiness reaches over 75(Gs) by using a stone crystal face machine cleaning pad with the weight not less than 70kg and the rotating speed of about 175/min.
2. The alkali-returning construction process of the pre-waterproof grindstone precast slab according to claim 1, characterized in that in the step 1), the water-cement ratio of the plain cement slurry is 1: 2.
3. The alkali-return construction process of the pre-waterproof grindstone precast slab according to claim 1, characterized in that in the step 2), the mixing ratio of the dry and hard cement mortar is 1: 3, wherein the sand is medium coarse river sand which is standard to be wetted, loosened and held by hand to form lumps without bleeding.
4. The alkali-returning construction process of the pre-waterproof grindstone precast slab according to claim 1, characterized in that in the step 3), a slitting machine uses a cutting blade with a thickness of 0.3mm to 0.5 mm.
5. The alkali-returning construction process of the pre-waterproof grindstone precast slab according to claim 1, wherein in the step 4), the construction site is maintained to be well ventilated without dust and sundries, and the construction temperature of the construction site is suitably 5 ℃ to 35 ℃.
6. The alkali-return construction process of the pre-waterproof grindstone precast slab according to claim 1, characterized in that in the step 5), a special cutting grinding piece for marble or granite is used.
7. The alkali-return construction process for the pre-waterproof grindstone precast slab as recited in claim 1, wherein in the step 7), the dry-grinding machine rotates at 1000-.
8. The alkali-return construction process for the pre-waterproof grindstone precast slab as recited in claim 1, wherein in the step 8), the narrow corners are treated with a nylon pad by a hand machine.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPQ402599A0 (en) * | 1999-11-12 | 1999-12-09 | Pro Grind Pty Ltd | Flooring system |
| CN103174274A (en) * | 2013-04-03 | 2013-06-26 | 标力建设集团有限公司 | Stone material seamless polishing construction method |
| CN107130766A (en) * | 2017-05-16 | 2017-09-05 | 深圳市亚泰国际建设股份有限公司 | One kind crystallization envelope seamless stone floor construction method of glaze |
-
2021
- 2021-12-20 CN CN202111566170.2A patent/CN114278046A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPQ402599A0 (en) * | 1999-11-12 | 1999-12-09 | Pro Grind Pty Ltd | Flooring system |
| CN103174274A (en) * | 2013-04-03 | 2013-06-26 | 标力建设集团有限公司 | Stone material seamless polishing construction method |
| CN107130766A (en) * | 2017-05-16 | 2017-09-05 | 深圳市亚泰国际建设股份有限公司 | One kind crystallization envelope seamless stone floor construction method of glaze |
Non-Patent Citations (4)
| Title |
|---|
| 冯黎?;: "室内涉水区域石材铺贴系统质量控制探讨", 中国建筑防水, no. 05 * |
| 吴智勇;: "大面积整体效果石材地面施工技术", 河南建材, no. 04 * |
| 朱仁贵 等: "大理石无缝磨抛施工质量控制", 浙江建筑, vol. 26, no. 10, pages 50 - 56 * |
| 王剑锋 等: "《装饰工程》", 中国建材工业出版社, pages: 111 * |
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