CN111962349A - Wear-resistant concrete ground construction process - Google Patents
Wear-resistant concrete ground construction process Download PDFInfo
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- CN111962349A CN111962349A CN202010694753.2A CN202010694753A CN111962349A CN 111962349 A CN111962349 A CN 111962349A CN 202010694753 A CN202010694753 A CN 202010694753A CN 111962349 A CN111962349 A CN 111962349A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
- E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
- E01C11/06—Methods of making joints
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/42—Machines for imparting a smooth finish to freshly-laid paving courses other than by rolling, tamping or vibrating
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/03—Arrangements for curing paving; Devices for applying curing means; Devices for laying prefabricated underlay, e.g. sheets, membranes; Protecting paving under construction or while curing, e.g. use of tents
Abstract
The invention relates to a wear-resistant concrete ground construction process, which belongs to the technical field of concrete ground construction and comprises the following steps: base course processing → leveling, formwork → pouring of basic concrete, leveling → paving of wear-resistant material → cutting seam → maintenance → pouring seam → grinding. The curing agent is coated on the surface of the wear-resistant material in a three-coating and three-grinding construction sequence, so that the basic concrete layer and the wear-resistant material layer are cured into a hard entity, the surface is glossier, the impression quality is high, the dustproof effect is better, the density, the strength and the hardness of the concrete layer are increased, and the wear resistance and the surface weather resistance of the concrete are greatly improved.
Description
Technical Field
The invention relates to the technical field of concrete ground construction, in particular to a wear-resistant concrete ground construction process.
Background
Compared with the traditional concrete ground, the wear-resistant concrete ground is characterized in that the wear-resistant concrete ground has the characteristics of wear resistance, high strength and impact resistance by adopting metal and nonmetal wear-resistant materials to carry out wear-resistant treatment on the concrete ground, and various colored wear-resistant grounds can be formed according to different preparation colors.
The Chinese patent application with the prior application number of 201510268734.2 discloses a construction method of an abrasion-resistant terrace in a steering area of an RTG shunting way, which comprises the following steps: s1, pouring concrete in the construction area; s2, leveling and trowelling the concrete; s3, spreading a metal wear-resistant terrace material on the surface of the concrete; s4, maintaining; and S5, cutting the expansion joint.
The above prior art solutions have the following drawbacks: spreading metal on a concrete surface can increase the wear resistance of the floor, but lacks further treatment of the wear layer, and the wear layer is prone to dusting and has poor gloss during use.
Disclosure of Invention
In order to relieve the dusting degree of the wear-resistant concrete ground in the use process and increase the compactness and glossiness of the wear-resistant concrete ground, the application provides a wear-resistant concrete ground construction process.
The above object of the present invention is achieved by the following technical solutions:
a wear-resistant concrete ground construction process comprises the following steps:
s1, performing base layer treatment, namely roughening the base layer ground, and cleaning the base layer ground;
s2, leveling, formwork erecting, and finding the horizontal line of the concrete layer of the elevation and the elastic foundation; installing a template, dividing the construction area by using the template, and simultaneously ensuring the horizontal quality of the template;
s3, pouring basic concrete, paving a steel bar mesh, pouring concrete, and ensuring that the concrete is poured along with pouring and is trowelled along with pouring;
s4, leveling the basic concrete, leveling the concrete by using a laser leveling machine, and leveling the concrete by using a manual leveling scraper after leveling by using the laser leveling machine;
s5, paving wear-resistant materials, uniformly spreading the wear-resistant materials on the surface of the basic concrete after the basic concrete is initially set, and grinding and extracting slurry by using a polishing machine;
s6, cutting a seam, and cutting the concrete to form a separation seam;
s7, maintaining, cleaning the surface ash layer and the impurities of the wear-resistant material after the cutting is finished, and spraying a maintenance agent for maintaining;
s8, pouring the seams, removing all loose particles and dust at the seams, and filling foam strips into the seams;
s9, polishing, curing the basic concrete for 10-15 days, uniformly coating a curing agent on the surface layer of the wear-resistant material after the surface layer of the wear-resistant material is dried and does not get damp, and then performing coarse grinding by using a polishing machine; brushing a second curing agent, and then carrying out middle grinding by using a grinding machine; brushing a curing agent for the third time, and then finely grinding by using a grinding machine; finally solidifying and crystallizing and further polishing.
By adopting the technical scheme, when the abrasion-resistant concrete ground construction is carried out, concrete is poured on the foundation at first, so that the thickness and the quality of the foundation concrete are ensured; then, wear-resistant materials are scattered on the surface layer of the basic concrete and polished, so that the wear-resistant strength of the concrete ground is improved; and finally, the wear-resistant material and the basic concrete are combined into a whole by coating the curing agent for multiple times and repeatedly polishing, so that the gloss of the concrete ground is ensured, the dust on the concrete ground is avoided, and the wear-resistant strength of the ground is further enhanced.
The invention is further configured to: s5 includes:
s51, spreading materials for the first time, uniformly spreading 2/3 wear-resistant materials on the surface of the foundation concrete layer, and not mixing water; when the wear-resistant material absorbs the water in the concrete and reaches a surface wet state, carrying out grinding and slurry extracting operation by using a single-disc or riding type double-disc heavy-load polishing machine;
s52, spreading materials for the second time, and uniformly spreading the rest 1/3 wear-resistant materials when the first layer of wear-resistant materials is hardened to a certain stage; after the second layer of wear-resistant material absorbs certain moisture, the second layer of wear-resistant material is polished by a double-disc polishing machine again.
Through adopting above-mentioned technical scheme, spill the material twice and can guarantee that wear-resisting material is to the whole covers of basic concrete face, prevent to have the uneven condition of regional spread now, grind twice and carry thick liquid and guarantee that wear-resisting material and basic concrete combine better.
The invention is further configured to: the grinding and polishing operation after each spreading of the wear-resistant material is ensured to be at least more than twice.
By adopting the technical scheme, the glossiness and the flatness of the surface of the wear-resistant material can be ensured by grinding and polishing for many times.
The invention is further configured to: in S9, both sides of 50 mesh 2 pass, 150 mesh 2 pass and 300 mesh are required for coarse grinding, 500 mesh 2 pass and 800 mesh 2 pass are required for medium grinding, 1000 mesh 2 pass is required for fine grinding, 2000 mesh 2 pass is required for polishing, and resin sheets are used for polishing sheets.
By adopting the technical scheme, the curing agent can better permeate the ground, and the curing effect is better.
The invention is further configured to: before the concrete is poured in S3, a grout replenishing operation is performed on the base layer, and after the bottom surface of the base layer is wetted with water, an interface agent is applied and a grout is applied.
By adopting the technical scheme, the brushing interface agent improves the bonding strength of the basic concrete layer to the base layer, and can effectively avoid the problems of hollowing, falling, shrinkage cracking and the like of the basic concrete layer, so that the basic concrete layer and the base layer can be better combined into a whole.
The invention is further configured to: after the foam strip is inserted into the slit at S8, polyurethane sealant is driven into the slit.
Through adopting above-mentioned technical scheme, seal the joint, avoid the later stage to have debris and dust to fall into in the joint-cutting.
The invention is further configured to: in S6, the cutting seam is performed within 48 hours after the concrete pouring construction is completed, the cutting depth is 1/3-2/5 of the thickness of the base layer concrete, the width is 3-5 mm, and the spacing of the separation seams is not more than 4.2 m.
Through adopting above-mentioned technical scheme, guarantee that the separation seam can play expend with heat and contract with cold's cushioning effect, the problem that concrete expend with heat and contract with cold can not be solved to the too big cutting plate, too big concrete slab makes the unable corresponding tension and the stress of releasing completely of gap, can cause the appearance of the condition such as the irregular fracture of plate on the contrary.
The invention is further configured to: in S3, steel fibers are added to the cast-in-place concrete.
By adopting the technical scheme, the steel fiber is added, so that the concrete cracking is effectively avoided, and the shear resistance, the impermeability and the impact resistance of the concrete are improved.
The invention is further configured to: in S7, the ratio of water to curing agent is 1:10, and the curing agent is sprayed to ensure that the surface of the wear-resistant material surface layer is completely wet.
Through adopting above-mentioned technical scheme, add water and be used for adjusting the dry consistency of curing agent, make the wearing material surface course of accomplishing form one deck maintenance membrane, avoid losing in a large number because of the evaporation leads to moisture to reach the effect of keeping moisture, maintaining the concrete.
The invention is further configured to: at S5, the wear-resistant material is spread for a suitable period of time when the person walks on the concrete leaving a footprint depth of 3-5 mm.
Through adopting above-mentioned technical scheme, guarantee the time of spreading wear-resisting material and then improve and spill the material quality, avoid too early or too late spilling the material and cause and spill the material quality relatively poor.
After the wear-resistant material is spread, ground and polished, the surface of the wear-resistant material is coated with the curing agent, and a construction sequence of three-coating and three-grinding is adopted, so that the basic concrete layer and the wear-resistant material layer are cured into a hard entity to form a three-dimensional space network structure, thereby increasing the density, strength and hardness of the concrete layer and greatly improving the wear resistance and surface weather resistance of the concrete. Compared with the concrete ground only paved with wear-resistant materials, the concrete ground has obvious surface gloss and better dustproof effect.
Drawings
Fig. 1 is a construction flow chart of the wear-resistant concrete ground construction process of the present application.
Detailed Description
The present application is described in further detail below with reference to fig. 1.
Referring to fig. 1, the invention discloses a wear-resistant concrete ground construction process, which comprises the following steps:
s1, basic layer processing
And (5) inspecting the base layer and repairing the crack.
The operating personnel utilize the milling machine to carry out the napping to basic unit ground to the thick liquid skin on the basic unit is shoveled off, and the dust is cleaned, has the greasy dirt to brush up with the buck with the aqueous alkali, utilizes clear water to wash clean the basic unit at last.
S2, leveling and supporting
And finding the elevation and the horizontal line of the elastic foundation concrete surface layer, measuring the elevation of the foundation concrete surface layer according to the existing positive and negative zero horizontal elevation lines on the wall surface, marking the elevation on the wall surface at the periphery, matching the elevation of the corridor outside the room, and ensuring that the measurement error is less than 3 mm.
And (3) installing the template, controlling the horizontal quality of the template by using an infrared level meter, and dividing the construction area by using the template.
S3 base layer sweeping slurry
Before pouring the foundation concrete, spraying water on the surface of the base layer for wetting. And (3) brushing an interfacial agent on the wetted substrate, wherein the ratio of the water to the interfacial agent is 1: 10. And then uniformly spreading a layer of plain cement paste on the base layer, wherein the plain cement paste is spread with concrete, so that the phenomenon that the base concrete surface layer is hollowed due to air drying of the cement paste for too long time is avoided.
By brushing the interfacial agent, the bonding strength of the basic concrete layer to the base layer is improved, and the problems of hollowing, falling, shrinkage cracking and the like of the basic concrete layer can be effectively avoided, so that the basic concrete layer and the base layer can be better combined into a whole.
S4, pouring foundation concrete
And laying a steel mesh, adopting a bidirectional phi 6@200 steel wire mesh, arranging the steel mesh in the middle of a basic concrete layer, pouring the concrete along with beating, trowelling along with pouring, and pouring in a warehouse-divided and lattice-jumping manner. Scraping with a 2m long scraping bar, reciprocating with a plate vibrator, tamping vertically and horizontally, and filling with concrete with the same mix proportion in a concave position until bleeding occurs in the surface layer.
The base concrete is C20 fine-stone concrete, and the thickness is 50-80 mm. The steel fiber can be added into the basic concrete, thereby effectively avoiding the cracking of the concrete and improving the shear resistance, the impermeability and the shock resistance of the concrete.
S5 leveling of foundation concrete
The concrete leveling uses a laser leveling machine, and the small laser leveling machine is used for integrally implementing self vibration and leveling. Vibrating the reinforced parts of the concrete corners and the column sides; immediately leveling the part which is subjected to corner paving and vibrating by using a laser leveling machine to ensure the flatness of the foundation concrete surface; when the laser leveling machine is used, the placing position of the laser emitter is noticed so as to avoid dead angles which can not receive laser.
After the laser leveling machine is leveled, a manual leveling scraper is adopted for secondary leveling, plankton on the surface of concrete is removed, the flatness of the surface is improved again, and the error of the flatness 2m is less than or equal to 3 mm. And carrying out the next step after the base concrete is qualified.
S6 laying wear-resistant materials
The basic concrete is initially set and has no bleeding, and the dry surface of the basic concrete is polished by a polisher. And after the dry surface is polished, spreading a wear-resistant material. The spreading time is judged by a method that the depth of a foot mark left by a person walking on the concrete is 3-5 mm. The wear-resistant material is selected from premixed color mineral dry scattering type hardener which is nonmetal aggregate, and the dosage of the wear-resistant material is 5 kg/m2. The wear-resistant material is uniformly spread twice according to the specified dosage of the wear-resistant material. The color of the wear-resistant material is based on the seal of the sample plate section.
S61, spreading the materials for the first time
The first spreader spread evenly about 2/3 abrasive wear-resistant material without water.
After the wear-resistant material absorbs certain moisture in the concrete, the surface wear-resistant material is in a wet state, and a single-disc or riding type double-disc heavy-load polishing machine is used for grinding and slurry extracting.
S62, spreading the materials for the second time
After the first layer of wear-resistant material has hardened to a certain level, typically 2 hours, a second dispensing operation is performed, and the remaining 1/3 wear-resistant material is uniformly dispensed by a spreader. And after the second layer of wear-resistant material absorbs certain moisture, the second layer of wear-resistant material is polished by a double-disc polisher again. The two-time material scattering can ensure that the wear-resistant material can completely cover the surface of the foundation concrete.
And (5) after the concrete is hardened to a certain degree, polishing the surface by using a heavy-duty double-disc polishing machine, and adjusting the running speed and the angle of the polishing machine according to the hardening condition of the concrete.
Each grinding and polishing operation is ensured at least twice, and the grinding and polishing operations are determined according to the weather and the environmental conditions of the day and the requirements on the surface glossiness. The polishing of the perimeter and corner regions of the pillars is carefully performed by hand and the quality of the polishing look and feel should be consistent with that of mechanical polishing.
The thickness of the wear-resistant material layer after the two-time material spreading and grinding is 2-3 mm.
S7, cutting
And cutting the concrete within 48 hours after the concrete pouring construction is finished to form a separation seam, wherein the cutting depth is 1/3 of the thickness of the base layer concrete, the width is 3-5 mm, and the cutting mode is cutting by adding water. The spacing of the separation seams is not more than 4.2 m; the sides of the column adopt rectangular cutting seams.
S8, curing
And after cutting, cleaning a dust layer and impurities on the surface of the wear-resistant material, spraying a curing agent for curing, wherein the ratio of water to the curing agent is 1:10, adjusting the dry consistency of the curing agent, and manually spraying the curing agent by using a sprayer to form a curing film on the finished surface of the wear-resistant material so as to achieve the effects of keeping moisture and curing concrete.
The spraying of the curing agent ensures that the surface of the wear-resistant material surface layer is completely wet, and the phenomenon of liquid accumulation is preferably avoided.
S9, crack pouring
After the maintenance of the wear-resistant material surface layer reaches the standard, all loose particles and dust at the joint cutting position are removed, and the cleanness and tidiness of the joint cutting are ensured; firstly, filling a foam strip into a joint seam, wherein the diameter of the foam strip is determined according to the development condition of the joint seam at that time; attaching figure paper on two sides of the seam, and driving black polyurethane sealant with lasting elasticity and rapid curing into the seam by using a glue gun; air is prevented from being introduced during construction of the sealant; lifting the masking paper and cleaning the polluted ground.
S10, grinding
And curing for 10-15 days, drying the surface layer of the wear-resistant material, and uniformly coating the curing agent on the surface layer of the wear-resistant material by using a brush after the surface layer of the wear-resistant material is not moistened, so that the curing agent can permeate into the concrete. And after the curing agent is dried, polishing the ground.
The ground grinding sequence is rough grinding → cleaning, slurry supplementing → middle grinding → cleaning, slurry supplementing → fine grinding → cleaning.
The coarse grinding is required to be carried out for two times of 50 meshes 2, 150 meshes 2 and 300 meshes, the medium grinding is required to be carried out for two times of 500 meshes 2 and 800 meshes 2, the fine grinding is required to be carried out for two times of 1000 meshes 2, and the polishing is required to be carried out for two times of 2000 meshes 2. The polishing sheet is a resin sheet. And 2 times of polishing by 500 meshes, then applying a second curing agent, curing, and alternately brushing, and 2 times of polishing by 800 meshes, and applying a third curing agent. After 2 times of 1000 meshes, the crystal is solidified and crystallized for 1 time, and the brightness presents stronger luster after finishing polishing.
The column corners and the edge corners are manually folded, a manual handheld polishing machine is used for polishing during polishing, and the grinding sheets are the same as the mechanical polishing sheets.
After 28 days of ground maintenance of the wear-resistant concrete, the practical resiliometer tests the compressive strength, and the guiding rule is used for measuring the flatness.
After the wear-resistant material is spread, ground and polished, the surface of the wear-resistant material is coated with the curing agent, and a construction sequence of three-coating and three-grinding is adopted, so that the basic concrete layer and the wear-resistant material layer are cured into a hard entity to form a three-dimensional space network structure, thereby increasing the density, strength and hardness of the concrete layer, and greatly improving the wear resistance and surface weather resistance of the concrete. Compared with a concrete ground only paved with wear-resistant materials, the concrete ground has the advantages of more glossy surface and better dustproof effect.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. The construction process of the wear-resistant concrete ground is characterized by comprising the following steps:
s1, performing base layer treatment, namely roughening the base layer ground, and cleaning the base layer ground;
s2, leveling, formwork erecting, and finding the horizontal line of the concrete layer of the elevation and the elastic foundation; installing a template, dividing the construction area by using the template, and simultaneously ensuring the horizontal quality of the template;
s3, pouring basic concrete, paving a steel bar mesh, pouring concrete, and ensuring that the concrete is poured along with pouring and is trowelled along with pouring;
s4, leveling the basic concrete, leveling the concrete by using a laser leveling machine, and leveling the concrete by using a manual leveling scraper after leveling by using the laser leveling machine;
s5, paving wear-resistant materials, uniformly spreading the wear-resistant materials on the surface of the basic concrete after the basic concrete is initially set, and grinding and extracting slurry by using a polishing machine;
s6, cutting a seam, and cutting the concrete to form a separation seam;
s7, maintaining, cleaning the surface ash layer and the impurities of the wear-resistant material after the cutting is finished, and spraying a maintenance agent for maintaining;
s8, pouring the seams, removing all loose particles and dust at the seams, and filling foam strips into the seams;
s9, polishing, curing the basic concrete for 10-15 days, uniformly coating a curing agent on the surface layer of the wear-resistant material after the surface layer of the wear-resistant material is dried and does not get damp, and then performing coarse grinding by using a polishing machine; brushing a second curing agent, and then carrying out middle grinding by using a grinding machine; brushing a curing agent for the third time, and then finely grinding by using a grinding machine; finally solidifying and crystallizing and further polishing.
2. The wear-resistant concrete ground construction process of claim 1, characterized in that: s5 includes:
s51, spreading materials for the first time, uniformly spreading 2/3 wear-resistant materials on the surface of the foundation concrete layer, and not mixing water; when the wear-resistant material absorbs the water in the concrete and reaches a surface wet state, carrying out grinding and slurry extracting operation by using a single-disc or riding type double-disc heavy-load polishing machine;
s52, spreading materials for the second time, and uniformly spreading the rest 1/3 wear-resistant materials when the first layer of wear-resistant materials is hardened to a certain stage; after the second layer of wear-resistant material absorbs certain moisture, the second layer of wear-resistant material is polished by a double-disc polishing machine again.
3. The wear-resistant concrete ground construction process of claim 2, characterized in that: the grinding and polishing operation after each spreading of the wear-resistant material is ensured to be at least more than twice.
4. The wear-resistant concrete ground construction process of claim 1, characterized in that: in S9, both sides of 50 mesh 2 pass, 150 mesh 2 pass and 300 mesh are required for coarse grinding, 500 mesh 2 pass and 800 mesh 2 pass are required for medium grinding, 1000 mesh 2 pass is required for fine grinding, 2000 mesh 2 pass is required for polishing, and resin sheets are used for polishing sheets.
5. The wear-resistant concrete ground construction process of claim 1, characterized in that: before the concrete is poured in S3, a grout replenishing operation is performed on the base layer, and after the bottom surface of the base layer is wetted with water, an interface agent is applied and a grout is applied.
6. The wear-resistant concrete ground construction process of claim 1, characterized in that: after the foam strip is inserted into the slit at S8, polyurethane sealant is driven into the slit.
7. The wear-resistant concrete ground construction process of claim 1, characterized in that: in S6, the cutting seam is performed within 48 hours after the concrete pouring construction is completed, the cutting depth is 1/3-2/5 of the thickness of the base layer concrete, the width is 3-5 mm, and the spacing of the separation seams is not more than 4.2 m.
8. The wear-resistant concrete ground construction process of claim 1, characterized in that: in S3, steel fibers are added to the cast-in-place concrete.
9. The wear-resistant concrete ground construction process of claim 1, characterized in that: in S7, the ratio of water to curing agent is 1:10, and the curing agent is sprayed to ensure that the surface of the wear-resistant material surface layer is completely wet.
10. The wear-resistant concrete ground construction process of claim 1, characterized in that: at S5, the wear-resistant material is spread for a suitable period of time when the person walks on the concrete leaving a footprint depth of 3-5 mm.
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| CN112663898A (en) * | 2020-12-25 | 2021-04-16 | 北京金隅混凝土有限公司 | Wear-resistant concrete ground construction process |
| CN114150841A (en) * | 2021-12-23 | 2022-03-08 | 浙江省一建建设集团有限公司 | Construction method of wear-resistant concrete terrace |
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Application publication date: 20201120 |