阅读说明：本技术 混凝土磨石地坪 (Concrete grindstone terrace ) 是由 张浩燃 于 2019-09-24 设计创作，主要内容包括：本发明涉及混凝土磨石地坪,包括如下步骤：S1：施工准备；S2：混凝土浇筑；S3：初步整平收面；S4：混凝土初凝固；S5：硬找平、提浆、修边；S6：撒布石子并挫毛；S7：整平、碾压、修边、抛光；S8：切缝、养护；S9：第一次粗磨；S10：灌浆；S11：第二次细磨；S12：Li基固化；S13：第三次精磨；S14：涂刷Guard保护剂；S15：第四次3000目抛光；本发明抗划痕性高,强度大,不易空鼓、开裂,同时还大大的降低了地坪成本。(The invention relates to a concrete grindstone terrace, which comprises the following steps: s1: construction preparation; s2: pouring concrete; s3: primarily leveling and collecting the dough; s4: primarily solidifying the concrete; s5: hard leveling, pulp extracting and trimming; s6: spreading stones and filing hairs; s7: leveling, rolling, trimming and polishing; s8: cutting and maintaining; s9: coarse grinding for the first time; s10: grouting; s11: fine grinding for the second time; s12: li-based curing; s13: fine grinding for the third time; s14: coating Guard protective agent; s15: fourth 3000-mesh polishing; the invention has high scratch resistance and high strength, is not easy to hollowly and crack, and simultaneously greatly reduces the terrace cost.)

1. The concrete terrazzo floor is characterized by comprising the following steps:

s1: construction preparation, compacting the sandstone cushion layer under the first-layer terrace by using a road roller, wherein the compaction coefficient is more than 0.96; removing all unnecessary sundries and facilities in a construction site, keeping a construction surface clean and tidy and having no cross construction;

s2: pouring concrete, wherein the grade of the concrete is not lower than C30, adopting clean river sand, adding no machine-made sand and surface sand, adding no fly ash and mineral powder, and the field slump is between 140 and 160 millimeters;

s3: primarily leveling and collecting the surface, basically leveling the surface of the concrete after S2, finishing and leveling the uneven parts of the footprint and the vibration of the surface by adopting a wood trowel and a scraping ruler, and primarily leveling by using the wood trowel;

s4: the concrete is initially solidified for half an hour;

s5: hard leveling, slurry extracting and trimming, wherein after the concrete is initially set for half an hour, a wooden trowel is used for first-time trowelling and pressing; the smearing pressure is uniform, and small pits, bubble holes, sand holes, foot prints and the like of the surface layer are polished to ensure that the surface layer is fully dense; simultaneously carrying out slurry extraction and trimming treatment on the concrete;

s6: spreading the stones and filing the wool, wherein the spreading of the stones is carried out twice, one time of longitudinal and transverse spreading is carried out, the stones should fall down uniformly to prevent uneven spreading, the stones are spread and smoothed by a single-disc troweling machine immediately to be combined with the base concrete slurry, the spreading of the stones with the particle size of 6mm-9mm and filing the wool of 6-9mm should be carried out immediately after the last working procedure, and the longitudinal and transverse spreading is carried out twice and smoothed by a hand troweling machine; spreading stones with the particle size of 3mm-6mm and smoothing, after spreading the stones with the particle size of 3mm-6mm, using a driving type troweling machine to trowel, after finishing spreading the stones with the three specifications, using a driving type double-disc machine to mechanically polish in a large area, and manually polishing corners;

s7: leveling, rolling, trimming and polishing, wherein after S6, a second leveling and rolling operation is carried out; the force for the first time of plastering is slightly larger than that for the first time of plastering, an electric trowel is used for calendaring, the trowel grains are leveled and polished, and finally, a manual trowel is used for polishing, and the whole plastering time is controlled to be completed before the concrete is finally set;

s8: cutting seams, maintaining, spraying a maintenance agent for maintenance after 5-6 hours of terrace construction, cutting the seams within 24 hours to prevent cracking, and maintaining the cotton felt for 7 days after the cutting of the seams is finished; cutting dividing joints of the concrete surface layer according to a dividing plane design drawing of a construction site, arranging through expansion joints for every 10-15 m square of concrete, and arranging expansion joints for every 2-5 m square of concrete;

s9: a first coarse grinding, wherein after 28 days from the step S8, a first polishing is carried out, wherein the first polishing is carried out by using a 50-mesh polishing machine, and then the first polishing is carried out by using a 100-mesh polishing machine; washing with clear water along with grinding, and timely sweeping the ground slurry; uniformly grinding, flattening and thoroughly grinding the whole terrazzo surface to expose the stone grain surface and the top surfaces of all the division bars;

s10: grouting, namely performing grouting treatment after primary coarse grinding, after the surface is slightly dried, coating a layer of cement paste with the same color (namely grouting supplement) to fill sand holes and dents, filling up the individual montmorillonite parts, and performing grouting according to the sequence of deep grouting and shallow grouting with different colors;

s11: fine grinding for the second time, maintaining for 3-4 days after slurry supplement, and grinding for the second time by using a 200-plus-300-mesh grinding stone in the same way as the first time; grinding until stone particles are exposed, the surface is flat and smooth and no pinholes exist, and then washing the stone particles clean by using clean water;

s12: li-based curing, after the ground of the grindstone is dried, spraying Li-based curing agent on the ground, pushing the ground uniformly by dust, and drying the ground;

s13: carrying out third fine grinding, and after S12, carrying out third grinding by using a 500-2000-mesh grinding stone in the same way as the first grinding;

s14: brushing Guard protective agent, and after the third fine grinding, uniformly brushing the Guard protective agent on the ground of the grindstone;

s15: polishing for the fourth time with 3000 meshes, and grinding for the third time by using a 3000-mesh grinding stone in the same way as the first time; and meanwhile, a high-speed polishing machine is used for carrying the animal hair pad to dry polish the ground, and construction is finished.

2. The concrete millstone terrace of claim 1, characterized in that: in step S2, the content of each concrete: water: 175kg of cement: 461kg of sand: 512kg of stones: 1252 kg; the corresponding mixing ratio is as follows: 0.38:1:1.11: 2.72; the concrete pouring adopts pump truck pouring.

3. The concrete grindstone terrace according to claim 1 or 2, characterized in that: in the step S3, the laser leveling uses a laser level to divide the concrete into a plurality of grids, leveling control points are arranged at the intersection points of the plurality of grids, and a steel wire mesh is laid according to the divided grids to realize the manual surface folding of the concrete.

4. The concrete millstone terrace of claim 1, characterized in that: in step S4, the leveling layer concrete of the initial set requires 2m error 3 mm.

5. The concrete millstone terrace of claim 1, characterized in that: construction of an old terrace: in the original construction preparation, a grinding and gold steel head adding machine is needed to carry out polishing construction on the old terrace, and the original foundation surface is exposed.

6. The concrete millstone terrace of claim 1, characterized in that: the push coating dosage of the concrete Li-based curing agent is 4-8m²Per kg; the push coating dosage of the Guard protective agent is 5-10m²/kg。

Technical Field

The invention belongs to the technical field of concrete grindstone terrace construction processes, and particularly relates to a concrete grindstone terrace.

Background

At present, terrazzo, artificial marble and other spliced grounds are mostly adopted for decoration and fitment of large public buildings such as domestic parking lots, exhibition halls and the like and the terrazzo materials have gaps, are easy to accumulate dirt and have high difficulty in pattern design, the terrazzo comprises epoxy terrazzo and inorganic terrazzo, but the epoxy terrazzo in the current market has the defects of low wear resistance, low scratch resistance, easy aging and the like; inorganic grindstone and traditional terrazzo have the defects of easy hollowing, cracking, higher cost and the like.

In the prior art, the technical scheme of the terrazzo is as follows:

the Chinese patent application 201510488455.7 discloses an inorganic crystal grindstone integral terrace and a construction method thereof, wherein the inorganic crystal grindstone integral terrace is made of high-strength cement; a polymer emulsion; anti-cracking polypropylene fibers. And a liquid water reducing agent; the construction method of the terrace system comprises the following steps: processing a base layer, namely milling and removing the concrete surface layer and various coatings containing the surface layer, wherein the milling depth is 4-6 mm; treating detailed joints such as expansion joints and washing and cleaning ground base layers; coating an interface agent, namely a component B, on the base layer; paving wear-resistant mortar of an inorganic crystal grindstone terrace system, namely the component A, the component B and the component C; spraying a high-quality concrete sealing curing agent; after hardening for 7-10 days, grinding and leveling, additionally spraying a concrete sealing and curing agent for the first time, and polishing; maintaining for 1-2 days. The invention has the advantages of environmental protection, low energy consumption, seamless performance, impact resistance and lower manufacturing cost, and overcomes the defects of low wear resistance, easy aging, cracking during shelling, short service life and the like of the epoxy terrace; has natural anti-leakage and anti-seepage capability, the ground is not easy to be polluted, and a large number of cleaning personnel are saved.

Chinese patent application 201610193750.4 discloses a pandola stone terrace, which is prepared by flatly laying an ultra-flat base layer on the ground, coating a layer of adhesive on the ultra-flat base layer, laying a layer of grindstone on the ultra-flat base layer, then pouring a layer of inorganic adhesive material on the grindstone layer, maintaining, coarsely grinding, roll-coating a crystal brightener and finely grinding; the super-flat base layer and the grindstone layer used for preparing the terrace can be directly laid and installed on site after being prepared in advance in a factory, so that the construction time can be obviously shortened, and the prepared grindstone terrace is flat, seamless, wear-resistant and compression-resistant, has excellent mechanical strength and mechanical property, has the characteristics of diversified textures, environmental protection, greenness, energy conservation, convenience in cleaning and the like, and has a better market prospect.

However, in the prior art, the inorganic crystal grindstone integral terrace and the construction method thereof have the problems of easiness in hollowing, cracking and high cost.

Disclosure of Invention

The invention aims to solve the problems in the background art and provides a construction method of a concrete magic stone terrace, which uses the construction process of a wear-resistant terrace, a curing terrace and a terrazzo terrace for reference, and is a novel terrazzo terrace formed by spreading and matching colorful stones according to requirements after the initial setting of leveling layer concrete and carrying out crystal face treatment after 28 days. The epoxy grinding stone and the inorganic grinding stone have approximate surface effects, and meanwhile, the floor cost is greatly reduced.

The invention provides the following technical scheme:

the concrete grindstone terrace comprises the following steps:

s1: construction preparation, compacting the sandstone cushion layer under the first-layer terrace by using a road roller, wherein the compaction coefficient is more than 0.96; removing all unnecessary sundries and facilities in a construction site, keeping a construction surface clean and tidy and having no cross construction;

s2: pouring concrete, wherein the grade of the concrete is not lower than C30, adopting clean river sand, adding no machine-made sand and surface sand, adding no fly ash and mineral powder, and the field slump is between 140 and 160 millimeters;

s3: primarily leveling and collecting the surface, basically leveling the surface of the concrete after S2, finishing and leveling the uneven parts of the footprint and the vibration of the surface by adopting a wood trowel and a scraping ruler, and primarily leveling by using the wood trowel;

s4: the concrete is initially solidified for half an hour;

s5: hard leveling, slurry extracting and trimming, wherein after the concrete is initially set for half an hour, a wooden trowel is used for first-time trowelling and pressing; the smearing pressure is uniform, and small pits, bubble holes, sand holes, foot prints and the like of the surface layer are polished to ensure that the surface layer is fully dense; simultaneously carrying out slurry extraction and trimming treatment on the concrete;

s6: spreading the stones and filing the wool, wherein the spreading of the stones is carried out twice, one time of longitudinal and transverse spreading is carried out, the stones should fall down uniformly to prevent uneven spreading, the stones are spread and smoothed by a single-disc troweling machine immediately to be combined with the base concrete slurry, the spreading of the stones with the particle size of 6mm-9mm and filing the wool of 6-9mm should be carried out immediately after the last working procedure, and the longitudinal and transverse spreading is carried out twice and smoothed by a hand troweling machine; spreading stones with the particle size of 3mm-6mm and smoothing, after spreading the stones with the particle size of 3mm-6mm, using a driving type troweling machine to trowel, after finishing spreading the stones with the three specifications, using a driving type double-disc machine to mechanically polish in a large area, and manually polishing corners;

s7: leveling, rolling, trimming and polishing, wherein after S6, a second leveling and rolling operation is carried out; the force for the first time of plastering is slightly larger than that for the first time of plastering, an electric trowel is used for calendaring, the trowel grains are leveled and polished, and finally, a manual trowel is used for polishing, and the whole plastering time is controlled to be completed before the concrete is finally set;

s8: cutting seams, maintaining, spraying a maintenance agent for maintenance after 5-6 hours of terrace construction, cutting the seams within 24 hours to prevent cracking, and maintaining the cotton felt for 7 days after the cutting of the seams is finished; cutting dividing joints of the concrete surface layer according to a dividing plane design drawing of a construction site, arranging through expansion joints for every 10-15 m square of concrete, and arranging expansion joints for every 2-5 m square of concrete;

s9: a first coarse grinding, wherein after 28 days from the step S8, a first polishing is carried out, wherein the first polishing is carried out by using a 50-mesh polishing machine, and then the first polishing is carried out by using a 100-mesh polishing machine; washing with clear water along with grinding, and timely sweeping the ground slurry; uniformly grinding, flattening and thoroughly grinding the whole terrazzo surface to expose the stone grain surface and the top surfaces of all the division bars;

s10: grouting, namely performing grouting treatment after primary coarse grinding, after the surface is slightly dried, coating a layer of cement paste with the same color (namely grouting supplement) to fill sand holes and dents, filling up the individual montmorillonite parts, and performing grouting according to the sequence of deep grouting and shallow grouting with different colors;

s11: fine grinding for the second time, maintaining for 3-4 days after slurry supplement, and grinding for the second time by using a 200-plus-300-mesh grinding stone in the same way as the first time; grinding until stone particles are exposed, the surface is flat and smooth and no pinholes exist, and then washing the stone particles clean by using clear water;

s12: li-based curing, after the ground of the grindstone is dried, spraying Li-based curing agent on the ground, pushing the ground uniformly by dust, and drying the ground;

s13: carrying out third fine grinding, and after S12, carrying out third grinding by using a 500-2000-mesh grinding stone in the same way as the first grinding;

s14: brushing Guard protective agent, and after the third fine grinding, uniformly brushing the Guard protective agent on the ground of the grindstone;

s15: polishing for the fourth time with 3000 meshes, and grinding for the third time by using a 3000-mesh grinding stone in the same way as the first time; and meanwhile, a high-speed polishing machine is used for carrying the animal hair pad to dry polish the ground, and construction is finished.

Preferably, the laser leveling method in step S3 includes: a rotating light beam emitted by the laser emitter forms a light plane at the positioning height of the operation land, the light plane is the reference plane of the leveling terrace when the stone grinding slurry paver operates, and the light plane can be horizontal and can also form an inclination angle with the horizontal (used for slope leveling operation); the laser receiver receives the optical signal and feeds back the height difference between the middle optical point and the reference optical plane to an operator of the spreading machine in an acoustic signal mode, and the operator lifts and lowers the spreading cutter by controlling the hydraulic station, so that the purpose of leveling the terrace is achieved.

Preferably, the method has requirements on the site construction environment: the construction temperature is above 5 ℃, and the ground has no open water; the lighting condition of the construction site needs to be sufficient (meeting the construction requirement at night);

preferably: in step S2, the content of each concrete: water: 175kg of cement: 461kg of sand: 512kg of stones: 1252 kg; the corresponding mixing ratio is as follows: 0.38:1:1.11: 2.72; pouring concrete by adopting a pump truck; each tray refers to a construction site, and the once-mixing (one-car) with the concrete mixer is called a tray in the specification.

Preferably: in the step S3, the laser leveling uses a laser level to divide the concrete into a plurality of grids, leveling control points are arranged at the intersection points of the plurality of grids, and a steel wire mesh is laid according to the divided grids to realize the manual surface folding of the concrete.

Preferably: in step S4, the leveling layer concrete of the initial set requires 2m error 3 mm.

Preferably: construction of an old terrace: in the original construction preparation, a grinding and gold steel head adding machine is needed to carry out polishing construction on the old terrace, and the original foundation surface is exposed.

Preferably: the push coating dosage of the concrete Li-based curing agent is 4-8m²Per kg; the push coating dosage of the Guard protective agent is 5-10m²/kg。

In addition, the Li-based curing is adopted for the concrete grindstone terrace, magnesium aluminosilicate, phosphorus fluorosilicate, magnesium aluminum phosphate, zinc fluorosilicate, hydrofluoric acid, sodium silicate and the like are added into the original components, after the improved Li-based curing agent is used, free calcium in concrete rapidly undergoes hydrolysis and polymerization with effective components of a concrete permeation sealing curing agent under the alkaline condition of the sodium silicate, and finally a three-dimensional mesh inorganic polymer taking silica tetrahedrons and aluminum tetrahedrons as structural units is generated, the structural gaps are filled with crystalline colloids, a layer of hard sealing entity consisting of crystalline colloids is generated on the surface of the concrete, the strength and the wear resistance of the surface layer of the concrete structure are greatly improved, and the service life of the terrace is greatly prolonged.

The curing agent comprises the following components:

compared with the prior art, the invention has the beneficial effects that:

(1) the concrete grindstone terrace has simple construction steps and does not need complex operation, after the improved curing agent is used, free calcium in concrete rapidly undergoes hydrolysis and polymerization with effective components of a concrete permeation sealing curing agent under the alkaline condition of sodium silicate, and finally a three-dimensional mesh inorganic polymer taking silica tetrahedron and aluminum tetrahedron as structural units is generated, the structural gaps are filled with crystalline colloid, a layer of hard sealing entity consisting of crystalline colloid is generated on the surface of the concrete, the strength and the wear resistance of the surface layer of a concrete structure are greatly improved, and the service life of the terrace is greatly prolonged.

(2) The invention relates to a concrete grindstone terrace, which is a novel grindstone terrace formed by spreading and matching colored stones according to requirements after the initial setting of leveling layer concrete and carrying out crystal face treatment after 28 days. The epoxy grinding stone and the inorganic grinding stone have approximate surface effects, and meanwhile, the floor cost is greatly reduced.

(3) According to the concrete grindstone terrace, the curing agent and the protective agent are coated on the surface of the terrace twice and perform chemical reaction with concrete, so that the surface layer of the concrete terrace is reinforced, sealed and hardened to form a high-strength compound which is not expanded, not contracted and stable in performance, the whole structure is bright, clean, compact and high in strength, seamless, anti-skidding, pollution-resistant, friction-resistant and corrosion-resistant, waxing is not needed in the later period, the maintenance is convenient, and the use cost is reduced.

Drawings

FIG. 1 is a flow chart of the concrete grindstone terrace process of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.