CN217000666U - Crack-resistant structure based on gypsum-based self-leveling mortar - Google Patents
Crack-resistant structure based on gypsum-based self-leveling mortar Download PDFInfo
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- CN217000666U CN217000666U CN202220615776.4U CN202220615776U CN217000666U CN 217000666 U CN217000666 U CN 217000666U CN 202220615776 U CN202220615776 U CN 202220615776U CN 217000666 U CN217000666 U CN 217000666U
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Abstract
The utility model discloses an anti-cracking structure based on gypsum-based self-leveling mortar, which comprises a floor base body, wherein a heat-insulating sound-insulating layer, a gypsum-based self-leveling mortar layer, a glass fiber grid cloth layer and a decorative layer are sequentially arranged on the floor base body from bottom to top, and vertical sound-insulating sheets are arranged between the heat-insulating sound-insulating layer, the gypsum-based self-leveling mortar layer, the glass fiber grid cloth layer and the wall body between the decorative layer and the wall body. The crack-resistant structure based on the gypsum-based self-leveling mortar provided by the utility model adoptsThe gypsum-based self-leveling mortar layer replaces the traditional cement-based cementing material and aims at reducing CO2The discharge of the waste water is of great strategic significance in providing the comprehensive utilization rate of industrial solid waste in China; and through from supreme heat preservation sound insulation layer, gypsum base self-leveling mortar layer, glass fiber net cloth layer and the decorative layer of establishing in proper order down at the floor base member, through paving glass fiber net cloth layer comprehensively, increase the overall stability of base member, can effectively resist the fracture that the shrink leads to.
Description
Technical Field
The utility model belongs to the technical field of building decoration engineering, and particularly relates to an anti-crack structure based on gypsum-based self-leveling mortar.
Background
The residential building is one of the most common building types in civil buildings in China and is the most contacted building space in daily life. The quality of indoor environment of residential buildings is directly related to normal life of people. At present, the leveling layer and the heat-insulation and sound-insulation protective layer of the floor slab in China mainly adopt fine aggregate concrete materials, and the cement-based cementing materials are large in shrinkage rate and low in bonding strength, so that the fine aggregate concrete cracks seriously, which has become a common quality problem which troubles the leveling layer and the heat-insulation and sound-insulation protective layer of the floor slab.
In order to solve the problem of low mechanical strength of gypsum-based self-leveling mortar, the hydraulic cementing material is the most important enhancement measure at present due to low cost and obvious enhancement effect. The common reinforcing materials such as portland cement, aluminate cement, sulphoaluminate cement and the like, wherein the portland cement is most widely applied, and the mixing amount of the portland cement can reach up to 20 percent. However, the cement-based cementing material has a serious shrinkage rate in the hydration hardening process, including drying shrinkage, temperature shrinkage, plastic shrinkage, chemical shrinkage, self-shrinkage and the like, the shrinkage rate of the cement-based cementing material is higher than 0.1% and is 3-4 times of that of gypsum mortar, and the risk of cracking of the gypsum-based self-leveling mortar is increased by the complex doping of silicate cement.
At present, the anti-cracking measures mainly focus on the optimization of the performance of the material, and mainly have the following aspects:
1) the composite fiber is doped to improve the continuity of the matrix, and the mechanical biting force, the interface bonding force and the holding force among the matrix are enhanced to resist the tensile stress generated inside, thereby inhibiting the crack propagation and the matrix cracking. The method can effectively reduce the cracking risk, but has higher requirements on the construction process. The material is sensitive to water consumption, and when the water consumption is slightly higher, the fibers float and cover the surface of the base layer, so that the anti-cracking effect of the fibers is reduced, and the apparent quality is poor.
2) The proportion of sand is increased. The proportion of the sand in the dry powder material is increased to 20 percent, and the effect of reducing the cracking risk of the matrix is obvious. However, when the cement mixing amount is too high, the effect is not obvious, and in addition, the density difference in slurry is large due to the increase of the sand proportion, and the problems of low strength of a hardened body, surface powder removal and the like are caused because the slurry is easy to delaminate and bleed in the pouring process.
3) Posterior retention of the separation slit. At present, in a few construction processes, after gypsum-based self-leveling mortar is hardened, a separation seam is arranged in a construction area of 6m multiplied by 6m so as to reduce cracking of a base body. The method is to adopt a mechanical cutting method for separation after the slurry is hardened. The gypsum matrix is subjected to external force cutting, so that the internal structure of the matrix is damaged, and the development of the mechanical strength of the matrix is not favorable. In addition, the method has complex process, high construction cost and long construction period, and relates to mechanical cutting operation and secondary treatment of later-stage construction joints.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the utility model mainly aims to provide an anti-cracking structure based on gypsum-based self-leveling mortar, and aims to solve the problem of engineering quality that the existing anti-cracking structure is easy to crack.
The purpose of the utility model is realized by the following technical scheme:
the utility model provides an anti structure of splitting based on gypsum base self-leveling mortar, includes the floor base member, from supreme heat preservation sound insulation layer, gypsum base self-leveling mortar layer, glass fiber net cloth layer and the decorative layer of being equipped with in proper order down on the floor base member, set up vertical sound insulation piece between heat preservation sound insulation layer, gypsum base self-leveling mortar layer, glass fiber net cloth layer and decorative layer and the wall body.
Preferably, the gypsum-based self-leveling mortar layer is further provided with a separation strip, the separation strip is arranged at a door opening of each room, the depth of the separation strip is the same as the thickness of the gypsum-based self-leveling mortar layer, and the upper surface of the separation strip is flush with the upper surface of the gypsum-based self-leveling mortar layer.
Preferably, the width of the upper surface of the separation strip is 0.5-1.5cm longer than the width of the door opening.
Preferably, the thermal insulation and sound insulation layer is selected from one of polyester fiber composite coiled materials and graphite polystyrene sound insulation and shock absorption plates.
Preferably, the thickness of the glass fiber mesh fabric layer is 3-5mm, and the weight of the glass fiber mesh fabric layer per square meter is 110-130 g.
Preferably, the glass fiber mesh fabric layer and the gypsum-based self-leveling mortar layer form an integral structure, and the glass fiber mesh fabric layer is laid at a position 5-10mm away from the upper surface of the gypsum-based self-leveling mortar layer.
Preferably, the upper end face of the vertical sound insulation sheet is 30-60mm away from the upper surface of the decoration layer.
Preferably, the initial setting time of the gypsum-based self-leveling mortar layer is more than 90min, the 24h flexural strength is more than 2.5MPa, the 24h compressive strength is 10MPa, the 28d absolute dry flexural strength is 5.6-6.4MPa, the 28d absolute dry compressive strength is 29.8MPa, the 28d drying tensile bonding strength is 1.3-1.6MPa, and the shrinkage rate is 0.01-0.03%.
Preferably wherein the gypsum-based self-levelling mortar layer has a thickness of 40-60 mm.
Preferably, the upper surface of the floor base body is further provided with an interface agent layer, and the interface agent layer is arranged between the floor base body and the heat-preservation sound-insulation layer.
Compared with the prior art, the utility model has at least the following advantages:
1) the application provides an anti-crack structure based on gypsum base self-leveling mortar replaces traditional cement base cementitious material through adopting gypsum base self-leveling mortar layer, for reducing CO2The discharge of the waste water has important strategic significance for providing the comprehensive utilization rate of industrial solid waste in China.
2) The application provides an anti-crack structure based on gypsum base self-leveling mortar through supreme heat preservation sound insulation layer, gypsum base self-leveling mortar layer, glass fiber net check cloth layer and the decorative layer of establishing in proper order down at the floor base member, pastes glass fiber net check cloth layer through spreading comprehensively, increases the overall stability of base member, can effectively resist the fracture that the shrink leads to.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a crack resistant construction provided by the present invention;
fig. 2 is a schematic top view of the crack-resistant structure provided by the present invention.
Wherein, 1, a floor base body; 2. a heat preservation and sound insulation layer; 3. a gypsum-based self-leveling mortar layer; 4. a fiberglass mesh fabric layer; 5. a decorative layer; 6. a vertical sound-insulating sheet; 7. an interfacial agent layer; 8. a dividing strip; 9. a wall body.
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.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "connected", "fixed", and the like are to be understood broadly, for example, "fixed" may be fixedly connected, may be detachably connected, or may be integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Example 1
As shown in fig. 1, an anti-crack structure based on gypsum-based self-leveling mortar comprises a floor substrate 1, wherein a heat preservation and sound insulation layer 2, a gypsum-based self-leveling mortar layer 3, a glass fiber grid cloth layer 4 and a decorative layer 5 are sequentially arranged on the floor substrate 1 from bottom to top, and vertical sound insulation sheets 6 are arranged between the heat preservation and sound insulation layer 2, the gypsum-based self-leveling mortar layer 3, the glass fiber grid cloth layer 4, the decorative layer 5 and a wall 9. During specific construction, 1) treating a floor base body; 2) paving and pasting a heat-insulating sound-insulating material on the floor substrate; 3) mixing gypsum-based self-leveling mortar; 4) pouring gypsum-based self-leveling mortar on the heat insulation and sound insulation layer, defoaming and leveling; 5) treat that gypsum base self-leveling mortar pours the completion back, and spread before the initial set and paste glass fiber net check cloth layer, and then make this glass fiber net check cloth layer and gypsum base self-leveling mortar form a whole, the crack resistance structure based on gypsum base self-leveling mortar that this application provided has that construction process is simple, and the base member overall stability of formation is good, is difficult to the fracture.
Preferably, in a preferred technical solution of this embodiment, the heat and sound insulation layer 2 is selected from one of a polyester fiber composite coiled material and a graphite polystyrene sound and sound insulation damping plate, and both of the two materials have excellent heat and sound insulation functions and are disposed on a floor structure layer of a building, and specifically, those skilled in the art can select the materials according to actual needs.
Wherein the thickness of the glass fiber mesh fabric layer 4 is 3-5mm, and the weight of the glass fiber mesh fabric layer per square meter is 110-130 g; the glass fiber mesh cloth layer is composed of medium-alkali glass fiber mesh cloth, the medium-alkali glass fiber mesh cloth is mainly alkali-resistant glass fiber mesh cloth, medium-alkali-free glass fiber yarns (the main component is silicate and has good chemical stability) are twisted and woven through a special tissue structure, namely a gauze structure, and then are subjected to high-temperature heat setting treatment such as alkali resistance and reinforcing agent, so that the glass fiber mesh cloth layer has the characteristics of stable structure, high strength, good alkali resistance, corrosion resistance, crack resistance and the like, has the best reinforcing effect, and is simple and easy to construct. The building material is mainly suitable for strengthening and preventing cracking of the inner and outer surfaces of cement, gypsum, walls, buildings and other structures, and is a novel building material for external wall heat insulation engineering; this application increases the overall stability of base member through adopting glass fiber net check cloth, can effectively resist the fracture that the shrink leads to.
Preferably, in a preferred technical scheme of this embodiment, glass fiber net check cloth layer 4 and gypsum base self-leveling mortar layer 3 form an organic whole structure, and glass fiber net check cloth layer 4 is laid and is located specific 5-10mm apart from the upper surface of gypsum base self-leveling mortar layer 3, waits to reach gypsum base self-leveling mortar and pours the back, and before the initial set paving glass fiber net check cloth layer, lightly strickles the level and presses to about 5 ~ 10mm below the mortar surface with the scratch chi, should set up to provide technical support for further improving the overall stability of base member.
Preferably, in a preferred technical solution of the present embodiment, wherein the upper end surface of the vertical sound-proof sheet 6 is 30-60mm away from the upper surface of the decorative layer 5, and further, the upper end surface of the vertical sound-proof sheet 6 is 50mm away from the upper surface of the decorative layer 5, the arrangement provides technical support for further improving the sound-proof performance of the wall body.
Example 2
On the basis of the embodiment 1, as shown in fig. 2, the gypsum-based self-leveling mortar layer 3 is further provided with the separation strips 8, the separation strips 8 are arranged at the door openings of all rooms, the depth of the separation strips 8 is the same as the thickness of the gypsum-based self-leveling mortar layer 3, and the upper surfaces of the separation strips 8 are flush with the upper surface of the gypsum-based self-leveling mortar layer 3. During specific construction, 1) floor base body floor treatment is carried out; 2) vertical sound insulation sheets are adhered to the periphery of the wall body; 3) paving and sticking a heat-insulating and sound-insulating layer on the floor substrate; 4) mixing gypsum-based self-leveling mortar; 5) pouring gypsum-based self-leveling mortar; pouring gypsum-based self-leveling mortar on the heat insulation and sound insulation layer; 6) laying the division bars; pouring is carried out by taking the door opening as a pouring separation line and taking the room as a unit; after the pouring, defoaming and leveling of the room are finished, inserting partition strips in close contact with the wall body at the door opening; the width of the upper surface of the separation strip 8 is 0.5-1.5cm longer than that of the door opening, the separation strip is inserted to the bottom of the gypsum-based self-leveling mortar body to achieve complete separation, and the surface of the separation strip is flush with the pouring surface; and then pouring the next room.
Example 3
On the basis of example 1 and/or example 2, wherein the gypsum-based self-levelling mortar layer 3 has a thickness of 40 to 60 mm; further, the thickness of the gypsum-based self-leveling mortar layer 3 is 50 mm; the gypsum-based self-leveling mortar layer used in the application has the initial setting time of more than 90min, the 24h flexural strength of more than 2.5Mpa, the 24h compressive strength of 10Mpa, the 28d absolute flexural strength of 5.6-6.4Mpa, the 28d absolute compressive strength of 29.8Mpa, the 28d drying tensile bonding strength of 1.3-1.6Mpa and the shrinkage rate of 0.01-0.03%, and is formed by curing gypsum-based self-leveling mortar; the gypsum-based self-leveling mortar used in the present application belongs to the prior art, and a person skilled in the art can select a gypsum self-leveling mortar and a preparation method thereof disclosed in patent No. 201810659376.1, and therefore, the detailed description thereof is omitted in the present application.
Preferably, in a preferred technical solution of the present embodiment, the upper surface of the floor base 1 is further provided with an interface agent layer 7, and the interface agent layer 7 is disposed between the floor base 1 and the thermal insulation and sound insulation layer 2. The interface agent layer is composed of an interface agent, and the interface agent is a product aiming at changing the physical and chemical properties of the interface of an object and can also be called as an interface modifier. The surface treatment of an object to improve the surface properties of the material is called surface treatment. The interfacial agent is applied in different fields, the technical means and purposes of the surface treatment of the object are different, and the treatment and modification of the object interface by the common interfacial agent can be divided into four technical types: wetting and impregnation, coating treatment, coupling agent treatment and surface modification. By adopting the interface agent, the heat-insulating sound-insulating layer and the floor base body form a stable whole, and technical support is provided for further improving the stability of the base body.
The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. An anti-cracking structure based on gypsum-based self-leveling mortar comprises a floor base body and is characterized in that a heat-insulating and sound-insulating layer, a gypsum-based self-leveling mortar layer, a glass fiber grid cloth layer and a decorative layer are sequentially arranged on the floor base body from bottom to top, and vertical sound-insulating pieces are arranged between the heat-insulating and sound-insulating layer, the gypsum-based self-leveling mortar layer, the glass fiber grid cloth layer and the decorative layer and a wall body; the gypsum-based self-leveling mortar layer is characterized in that partition strips are further arranged at door openings of all rooms, the depth of each partition strip is equal to the thickness of the gypsum-based self-leveling mortar layer, and the upper surfaces of the partition strips are flush with the upper surface of the gypsum-based self-leveling mortar layer.
2. The gypsum-based self-leveling mortar anti-crack construction of claim 1, wherein the width of the upper surface of the partition strip is 0.5-1.5cm longer than the width of the door opening.
3. The gypsum-based self-leveling mortar based crack resistant construction according to claim 1, wherein the thermal insulation and sound insulation layer is selected from one of a polyester fiber composite coiled material and a graphite polystyrene sound insulation and shock absorption plate.
4. The crack resistance structure based on gypsum-based self-leveling mortar of claim 1, wherein the thickness of the glass fiber mesh layer is 3-5mm, and the weight of the glass fiber mesh layer per square meter is 110-130 g.
5. The gypsum-based self-leveling mortar based crack resistant construction according to claim 4, wherein the glass fiber mesh fabric layer and the gypsum-based self-leveling mortar layer form an integral structure, and the glass fiber mesh fabric layer is laid at a distance of 5-10mm from the upper surface of the gypsum-based self-leveling mortar layer.
6. The gypsum-based self-leveling mortar based crack-resistant construction according to claim 1, wherein an upper end surface of the vertical sound-insulating sheet is 30-60mm from an upper surface of the decorative layer.
7. The crack-resistant structure based on the gypsum-based self-leveling mortar of claim 1, wherein the gypsum-based self-leveling mortar layer has an initial setting time of more than 90min, a 24h flexural strength of more than 2.5Mpa, a 24h compressive strength of 10Mpa, a 28d oven dry flexural strength of 5.6-6.4Mpa, a 28d oven dry compressive strength of 29.8Mpa, a 28d oven dry tensile bond strength of 1.3-1.6Mpa, and a shrinkage of 0.01-0.03%.
8. The gypsum-based self-leveling mortar based crack resistant construction according to claim 7, wherein the thickness of the gypsum-based self-leveling mortar layer is 40-60 mm.
9. The gypsum-based self-leveling mortar based crack-resistant structure according to claim 1, wherein an interfacial agent layer is further disposed on the upper surface of the floor substrate, and the interfacial agent layer is disposed between the floor substrate and the thermal insulation and sound insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220615776.4U CN217000666U (en) | 2022-03-16 | 2022-03-16 | Crack-resistant structure based on gypsum-based self-leveling mortar |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220615776.4U CN217000666U (en) | 2022-03-16 | 2022-03-16 | Crack-resistant structure based on gypsum-based self-leveling mortar |
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| CN217000666U true CN217000666U (en) | 2022-07-19 |
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| CN202220615776.4U Active CN217000666U (en) | 2022-03-16 | 2022-03-16 | Crack-resistant structure based on gypsum-based self-leveling mortar |
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