CN113863618A - Gypsum sound insulation system for floor sound insulation and application thereof - Google Patents
Gypsum sound insulation system for floor sound insulation and application thereof Download PDFInfo
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- CN113863618A CN113863618A CN202111169681.0A CN202111169681A CN113863618A CN 113863618 A CN113863618 A CN 113863618A CN 202111169681 A CN202111169681 A CN 202111169681A CN 113863618 A CN113863618 A CN 113863618A
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- 238000009413 insulation Methods 0.000 title claims abstract description 110
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 64
- 239000010440 gypsum Substances 0.000 title claims abstract description 64
- 239000010410 layer Substances 0.000 claims abstract description 109
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 79
- 239000011426 gypsum mortar Substances 0.000 claims abstract description 71
- 239000002344 surface layer Substances 0.000 claims abstract description 55
- 239000000919 ceramic Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000000853 adhesive Substances 0.000 claims description 17
- 230000001070 adhesive effect Effects 0.000 claims description 17
- 239000011381 foam concrete Substances 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 239000002023 wood Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- 239000011325 microbead Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 15
- 239000004567 concrete Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 239000011150 reinforced concrete Substances 0.000 description 8
- 239000011083 cement mortar Substances 0.000 description 7
- 238000007667 floating Methods 0.000 description 5
- 239000004793 Polystyrene Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000004005 microsphere Substances 0.000 description 2
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- 239000010959 steel Substances 0.000 description 2
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/90—Passive houses; Double facade technology
Abstract
The invention discloses a gypsum sound insulation system for floor sound insulation and application thereof, wherein the gypsum mortar sound insulation system consists of a gypsum self-leveling mortar surface layer with higher strength and a cushion layer with lower strength, and the absolute dry compressive strength of 28d of the cushion layer material is not more than 80% of the absolute dry compressive strength of 28d of the surface layer material. The thickness of surface course is 10 ~ 25mm, and the thickness of bed course is 10 ~ 25mm, and the total thickness of surface course and bed course is less than 40 mm. The gypsum mortar sound insulation system is arranged on the floor slab, and a decorative layer is arranged on the gypsum mortar sound insulation system. The double-layer mortar structure with different strengths is utilized, so that the leveling layer has a better sound insulation effect. When the ceramic tile is used as a decorative layer, the sound insulation quantity can reach more than 10dB, the use requirement of a common house can be met, an elastic sound insulation layer does not need to be additionally arranged, and the construction procedures and the engineering cost are reduced.
Description
Technical Field
The invention relates to the technical field of sound insulation, in particular to a gypsum sound insulation system for floor sound insulation and application thereof.
Background
In recent years, with the rapid development of high-rise buildings, the floor sound insulation problem is gradually outstanding, the poor sound insulation performance of the floor not only influences living experience, but also influences neighborhood relations, and the problem of the sound insulation of the floor is urgently needed to be solved.
At present, the floor sound insulation mainly adopts a floating sound insulation floor technology, and a floating floor structure is shown in figure 1. Specifically, from up including structural layer (reinforced concrete floor) → elastic vibration reduction layer (elastic material layer) → floating floor layer (the fine stone concrete layer of belted steel silk screen) in proper order down, the elastic vibration reduction layer commonly used at present includes sound insulation pad, sound insulation mortar and sound insulation coating etc.. And finally, paving decorative layers such as ceramic tiles and the like above the floating plate layer.
The sound insulation pad is a coiled material made of organic materials, the thickness of the sound insulation pad is usually 3-20 mm, and the sound insulation quantity is usually 15-30 dB. The strength is low, the surface layer needs to be protected by fine aggregate concrete (the strength grade is not lower than C25) with a 40-50 mm steel wire mesh, and the phenomenon of hollowing and cracking is easy to generate after long-term use. In recent years, an organic material insulation board is adopted to replace a sound insulation pad.
The sound insulation mortar is dry-mixed mortar taking rubber particles as main sound insulation materials, water is added according to a specified proportion, the mixture is uniformly mixed, and then the dry-mixed mortar is laid on a floor filling layer, the thickness of the sound insulation mortar is 10-30 mm generally, and the sound insulation amount is 5-12 dB generally. The compressive strength is low, generally below 2MPa, the surface layer needs to be protected by cement mortar or fine aggregate concrete with the thickness of 30-50 mm, and the phenomenon of hollowing and cracking is easy to generate after long-term use.
The sound insulation coating is composed of a coating, a high-elastic damping filler, a performance regulator and the like, the thickness of the sound insulation coating is usually 3-5mm, and the sound insulation quantity is usually 10-20 dB. The compressive strength of the concrete is low, generally below 1MPa, and the surface layer needs to be protected by cement mortar or fine aggregate concrete with the thickness of 30-50 mm.
The sound insulation pad, the sound insulation mortar and the sound insulation coating are all formed by adding a layer of elastomer sound insulation material between the original floor and the leveling layer, and the method can effectively improve the sound insulation performance of the floor but has the following defects.
(1) And an independent elastic sound insulation layer is added, so that the construction process and the engineering cost are increased.
(2) Because the strength of the elastomer material is very low, a thicker leveling layer is required to be adopted, and under the condition of high fixed layer, the net height of a room is reduced, so that the living experience is influenced.
(3) Due to the organic components contained in the material, the combustion performance of the material is generally B grade, the material detection is complex, and the fire risk exists in the construction and use processes.
The concrete floor leveling layer is usually made of cement mortar or fine stone concrete, the 28d strength of the concrete floor leveling layer is more than 15MPa, manual leveling is needed, and the construction speed is slow. In recent years, gypsum self-leveling mortar technology is newly developed, the 28d absolute dry compressive strength of the gypsum self-leveling mortar is required to be more than 20MPa by the existing standard, and the gypsum self-leveling mortar has the characteristics of high construction speed, high setting and hardening speed, lower requirement on the construction level of workers and the like due to good fluidity and capability of self-leveling. The sound insulation quantity of the concrete floor slab with the thickness of 100-140 mm and cement mortar or fine aggregate concrete with the thickness of 30-50 mm is less than 5 dB; the 30mm gypsum self-leveling mortar leveling layer is adopted, the sound insulation performance is poor, the sound insulation quantity is about 5dB generally, and the sound insulation quantity for achieving a good sound insulation effect is not less than 10 dB. Therefore, the prior leveling layer technology can not achieve better sound insulation effect.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a gypsum sound insulation system for floor sound insulation and application thereof.
The purpose of the invention can be achieved by adopting the following technical scheme:
the utility model provides a gypsum mortar sound insulation system for floor sound insulation, gypsum mortar sound insulation system includes the gypsum mortar surface course of higher strength and the bed course of lower strength, and 28d oven-dry compressive strength of bed course material is no longer than 80% of 28d oven-dry compressive strength of gypsum mortar surface course material, and is not less than 2.5 MPa.
The thickness of gypsum mortar surface course is 10 ~ 25mm, and the thickness of bed course is 10 ~ 25mm, and gypsum mortar surface course and bed course gross thickness are less than 40 mm.
The gypsum mortar sound insulation system is arranged on the floor slab, and a decorative layer is arranged on the gypsum mortar sound insulation system.
Furthermore, the gypsum mortar surface layer and the cushion layer are both gypsum mortar with self-leveling property, the 28d absolute dry compressive strength of the gypsum mortar surface layer is not lower than 15MPa, and the 28d absolute dry compressive strength of the cushion layer is not lower than 5 MPa.
Furthermore, the gypsum mortar surface layer and the cushion layer are both gypsum mortar with self-leveling property, the 28d absolute dry compressive strength of the gypsum mortar surface layer is not lower than 10MPa, and the 28d absolute dry compressive strength of the cushion layer is not lower than 2.5 MPa.
Further, the gypsum mortar surface layer is gypsum mortar with self-leveling property, and the 28d absolute dry compressive strength of the surface layer mortar is not lower than 10 MPa; the cushion layer uses foam concrete or ceramsite foam concrete to replace gypsum mortar, and the preferable 28d compressive strength of the foam concrete or ceramsite foam concrete is not lower than 2.5 MPa.
Further, the gypsum mortar surface layer is gypsum mortar with self-leveling property, and the 28d absolute dry compressive strength of the surface layer mortar is not lower than 10 MPa; the cushion layer is formed by replacing gypsum mortar with vitrified microsphere thermal insulation mortar or building thermal insulation mortar with A-grade combustion grade, and the preferred 28d compressive strength of the vitrified microsphere thermal insulation mortar or the building thermal insulation mortar is not lower than 2.5 MPa.
Further, when the ceramic tile is used as a decorative layer, the surface layer of the gypsum mortar is treated by adopting an interface agent, and the ceramic tile is stuck by using a ceramic tile adhesive.
Further, when a wood floor is used as a decorative layer, the surface layer of the gypsum mortar is treated by adopting an interface agent, and a foam plastic liner with the thickness of 1-5mm is laid; or the gypsum mortar surface layer is stuck with a wood floor by adopting an adhesive.
Furthermore, an isolating film is processed or paved between the cushion layer and the floor slab by adopting an interfacial agent, and the thickness of the isolating film is not less than 0.15 mm.
Further, an insulation board is laid on the lower surface of the isolation film, and the thickness of the insulation board is 10-30 mm.
Further, sound insulation coating, sound insulation mortar, sound insulation felt and the like are arranged below the cushion layer so as to further improve the sound insulation performance.
Compared with the prior art, the invention has the following advantages and effects:
(1) the invention utilizes the double-layer gypsum mortar structure with different strengths to reflect sound waves, so that the leveling layer has better sound insulation effect. When the ceramic tile is used as a decorative layer, the sound insulation quantity can reach more than 10dB, the use requirement of a common house can be met, an elastic sound insulation layer does not need to be additionally arranged, and the construction procedures and the engineering cost are reduced.
(2) The thickness of the gypsum mortar sound insulation system disclosed by the invention is consistent with that of the traditional leveling layer, and the room clearance cannot be reduced.
(3) The gypsum mortar sound insulation system disclosed by the invention is made of inorganic materials or materials with the combustion grade of A grade, and is safe to use.
Drawings
FIG. 1 is a schematic structural diagram of a floating sound insulation floor slab in the prior art;
FIG. 2 is a schematic view of a reinforced concrete floor slab in comparative example 1;
FIG. 3 is a schematic view of a reinforced concrete floor slab and an upper layer structure in comparative example 2;
FIG. 4 is a schematic view of a reinforced concrete floor slab and an upper layer structure in comparative example 3;
FIG. 5 is a schematic view of a gypsum mortar sound insulation system in examples 1 and 2;
FIG. 6 is a schematic view of a gypsum mortar sound insulation system in example 3;
FIG. 7 is a schematic view of a gypsum mortar sound insulation system in example 4;
FIG. 8 is a schematic view of a gypsum mortar sound insulation system in example 5;
FIG. 9 is a schematic view of a gypsum mortar sound insulation system in example 6;
FIG. 10 is a schematic view of a gypsum mortar sound insulation system in example 7;
FIG. 11 is a schematic view of a gypsum mortar sound insulation system in example 8;
FIG. 12 is a schematic view of a gypsum mortar sound insulation system in example 9;
FIG. 13 is a schematic view of a gypsum mortar sound insulation system in example 10;
FIG. 14 is a schematic view of a gypsum mortar sound insulation system in example 11;
in the drawings, the reference numerals are as follows: 1-reinforced concrete floor slab; 2a-M15 cement mortar leveling layer; 2 b-gypsum self-leveling mortar leveling layer; 3-gypsum self-leveling mortar surface course; 4 a-gypsum self-leveling mortar cushion layer; 4 b-gypsum light mortar cushion layer; 4 c-foam concrete cushion layer; 4 d-vitrified micro bubble heat preservation mortar cushion layer; 4 e-a polystyrene lightweight aggregate mortar cushion layer with the combustion grade of A grade; 5-ceramic tile adhesive; 6 a-a ceramic tile decorative layer; 6 b-wood floor decoration layer; 7-an interfacial agent; 8-foam plastic liner; 9-a barrier film; 10-a heat-insulating plate; 11-sound insulation coating.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
Comparative example 1
The thickness of the reinforced concrete floor slab is 100 mm. The block diagram is shown in fig. 2.
Comparative example 2
The thickness of the reinforced concrete floor is 100mm, a M15 cement mortar leveling layer with the thickness of 50mm is adopted, and the 28d compressive strength of the cement mortar is 20.2 MPa. The decorative layer is a ceramic tile decorative layer with the thickness of 8mm, and is stuck by a C1 type ceramic tile adhesive with the thickness of 5 mm. The block diagram is shown in fig. 3.
Comparative example 3
The thickness of the reinforced concrete floor is 100mm, a 30mm thick gypsum self-leveling mortar leveling layer is adopted, and the 28d absolute dry compressive strength of the mortar is 24.1 MPa. The decorative layer is a ceramic tile decorative layer with the thickness of 8mm, and is stuck by a C1 type ceramic tile adhesive with the thickness of 5 mm. The block diagram is shown in fig. 4.
Example 1
The gypsum mortar sound insulation system disclosed by the embodiment is composed of a gypsum self-leveling mortar surface layer and a gypsum self-leveling mortar cushion layer, wherein 28d absolute dry compressive strength of gypsum self-leveling surface layer mortar is 35.1MPa, and the thickness is 10 mm; 28d absolute dry compressive strength of the gypsum self-leveling cushion mortar is 18.3MPa, and the thickness is 10 mm. The decorative layer is a ceramic tile decorative layer with the thickness of 8mm, and is stuck by a C1 type ceramic tile adhesive with the thickness of 5 mm. The block diagram is shown in fig. 5.
Example 2
The gypsum mortar sound insulation system disclosed by the embodiment is composed of a gypsum self-leveling mortar surface layer and a gypsum self-leveling mortar cushion layer, wherein 28d absolute dry compressive strength of gypsum self-leveling surface layer mortar is 18.3MPa, and the thickness is 15 mm; 28d absolute dry compressive strength of the gypsum self-leveling cushion mortar is 8.2MPa, and the thickness is 15 mm. The decorative layer is a ceramic tile decorative layer with the thickness of 8mm, and is stuck by a C1 type ceramic tile adhesive with the thickness of 5 mm. The block diagram is shown in fig. 5.
Example 3
The gypsum mortar sound insulation system disclosed by the embodiment is composed of a gypsum self-leveling mortar surface layer and a gypsum light mortar cushion layer, wherein 28d absolute dry compressive strength of gypsum self-leveling mortar surface layer is 13.5MPa, and the thickness is 16 mm; the 28d absolute dry compressive strength of the gypsum light cushion mortar is 4.5MPa, and the thickness is 22 mm. The decorative layer is a ceramic tile decorative layer with the thickness of 8mm, and is stuck by a C1 type ceramic tile adhesive with the thickness of 5 mm. The block diagram is shown in fig. 6.
Example 4
The gypsum mortar sound insulation system disclosed by the embodiment is composed of a gypsum self-leveling mortar surface layer and a foam concrete cushion layer, wherein 28d absolute dry compressive strength of the gypsum self-leveling surface layer mortar is 18.6MPa, and the thickness is 19 mm; the foam concrete cushion layer 28d has the compressive strength of 2.6MPa and the thickness of 19 mm. The decorative layer is a ceramic tile decorative layer with the thickness of 8mm, and is stuck by a C1 type ceramic tile adhesive with the thickness of 5 mm. The block diagram is shown in FIG. 7.
Example 5
The gypsum mortar sound insulation system disclosed by the embodiment is composed of a gypsum self-leveling mortar surface layer and a vitrified micro-bead heat-insulating mortar cushion layer, wherein 28d absolute dry compressive strength of gypsum self-leveling mortar surface layer is 18.3MPa, and the thickness is 24 mm; the 28d compressive strength of the vitrified micro bubble heat preservation cushion mortar is 2.5MPa, and the thickness is 15 mm. The decorative layer is a ceramic tile decorative layer with the thickness of 8mm, and is stuck by a C1 type ceramic tile adhesive with the thickness of 5 mm. The block diagram is shown in fig. 8.
Example 6
The gypsum mortar sound insulation system disclosed by the embodiment is composed of a gypsum self-leveling mortar surface layer and a polystyrene lightweight aggregate mortar cushion layer with the combustion grade of A, wherein 28d absolute dry compressive strength of gypsum self-leveling surface layer mortar is 18.3MPa, and the thickness of the gypsum self-leveling surface layer mortar cushion layer is 18 mm; the polystyrene light aggregate cushion mortar with the combustion grade of A has the 28d compressive strength of 2.6MPa and the thickness of 20 mm. The decorative layer is a ceramic tile decorative layer with the thickness of 8mm, and is stuck by a C1 type ceramic tile adhesive with the thickness of 5 mm. The block diagram is shown in fig. 9.
Example 7
The gypsum mortar sound insulation system disclosed by the embodiment is composed of a gypsum self-leveling mortar surface layer and a gypsum self-leveling mortar cushion layer, wherein 28d absolute dry compressive strength of gypsum self-leveling surface layer mortar is 18.3MPa, and the thickness is 15 mm; 28d absolute dry compressive strength of the gypsum self-leveling cushion mortar is 8.2MPa, and the thickness is 15 mm. The decorative layer is a ceramic tile decorative layer with the thickness of 8mm, and is stuck by a C1 type ceramic tile adhesive with the thickness of 5 mm. The surface of the concrete floor is treated with an interfacial agent in advance. The block diagram is shown in fig. 10.
Example 8
The gypsum mortar sound insulation system disclosed by the embodiment is composed of a gypsum self-leveling mortar surface layer and a gypsum self-leveling mortar cushion layer, wherein 28d absolute dry compressive strength of gypsum self-leveling surface layer mortar is 18.3MPa, and the thickness is 15 mm; 28d absolute dry compressive strength of the gypsum self-leveling cushion mortar is 8.2MPa, and the thickness is 15 mm. The decorative layer is a 15 mm-thick wood floor decorative layer, and a 2 mm-thick foam plastic liner is laid on the surface layer mortar. The surface of the concrete floor is treated with an interfacial agent in advance. The block diagram is shown in fig. 11.
Example 9
The gypsum mortar sound insulation system disclosed by the embodiment is composed of a gypsum self-leveling mortar surface layer and a gypsum self-leveling mortar cushion layer, wherein 28d absolute dry compressive strength of gypsum self-leveling surface layer mortar is 18.3MPa, and the thickness is 15 mm; 28d absolute dry compressive strength of the gypsum self-leveling cushion mortar is 8.2MPa, and the thickness is 15 mm. The decorative layer is a ceramic tile decorative layer with the thickness of 8mm, and is stuck by a C1 type ceramic tile adhesive with the thickness of 5 mm. An isolation film with the thickness of 0.2mm is paved under the cushion mortar. The block diagram is shown in fig. 12.
Example 10
The gypsum mortar sound insulation system disclosed by the embodiment is composed of a gypsum self-leveling mortar surface layer and a gypsum self-leveling mortar cushion layer, wherein 28d absolute dry compressive strength of gypsum self-leveling surface layer mortar is 18.3MPa, and the thickness is 15 mm; 28d absolute dry compressive strength of the gypsum self-leveling cushion mortar is 8.2MPa, and the thickness is 15 mm. The decorative layer is a ceramic tile decorative layer with the thickness of 8mm, and is adhered by a C1 type ceramic tile adhesive with the thickness of 3 mm. An isolation film with the thickness of 0.2mm is paved under the cushion mortar, and a heat insulation board with the thickness of 20mm is paved. The block diagram is shown in FIG. 13.
Example 11
The gypsum mortar sound insulation system disclosed by the embodiment is composed of a gypsum self-leveling mortar surface layer and a gypsum self-leveling mortar cushion layer, wherein 28d absolute dry compressive strength of gypsum self-leveling surface layer mortar is 18.3MPa, and the thickness is 15 mm; 28d absolute dry compressive strength of the gypsum self-leveling cushion mortar is 8.2MPa, and the thickness is 15 mm. The decorative layer is a ceramic tile decorative layer with the thickness of 8mm, and is stuck by a C1 type ceramic tile adhesive with the thickness of 5 mm. And 3 mm-thick sound-insulating coating is sprayed under the cushion layer mortar. The block diagram is shown in fig. 14.
The weighted normalized impact sound pressure level and the amount of improvement in the impact sound pressure level for the comparative examples and examples are shown in table 1.
TABLE 1 weighted normalized impact pressure level and impact pressure level improvement for comparative and example
| Weighted standardized impact sound pressure level/dB | Impact sound pressure level improvement/dB | |
| Comparative example 1 | 80.2 | 0 |
| Comparative example 2 | 78.3 | 1.9 |
| Comparative example 3 | 75.5 | 4.7 |
| Example 1 | 69.8 | 10.4 |
| Example 2 | 68.4 | 11.8 |
| Example 3 | 67.5 | 12.7 |
| Example 4 | 67.9 | 12.3 |
| Example 5 | 66.4 | 13.8 |
| Example 6 | 64.5 | 15.7 |
| Example 7 | 68.3 | 11.9 |
| Example 8 | 61.4 | 18.8 |
| Example 9 | 67.5 | 12.7 |
| Example 10 | 64.4 | 15.8 |
| Example 11 | 63.2 | 17.0 |
As mentioned above, the present invention can be better realized, and the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all equivalent changes and modifications made according to the present disclosure are intended to be covered by the scope of the claims of the present invention.
Claims (10)
1. A gypsum sound insulation system for floor sound insulation is characterized by comprising a gypsum mortar surface layer with higher strength and a cushion layer with lower strength, wherein the 28d absolute dry compressive strength of a cushion layer material is not more than 80% of the 28d absolute dry compressive strength of the gypsum mortar surface layer material and is not less than 2.5 MPa;
the thickness of the gypsum mortar surface layer is 10-25 mm, the thickness of the cushion layer is 10-25 mm, and the total thickness of the gypsum mortar surface layer and the cushion layer is less than 40 mm;
the gypsum mortar sound insulation system is arranged on the floor slab, and a decorative layer is arranged on the gypsum mortar sound insulation system.
2. The gypsum sound insulation system of claim 1, wherein the gypsum mortar surface layer and the cushion layer are both gypsum mortar with self-leveling property, the 28d absolute dry compressive strength of the gypsum mortar surface layer is not lower than 15MPa, and the 28d absolute dry compressive strength of the cushion layer is not lower than 5 MPa.
3. The gypsum sound insulation system of claim 1, wherein the gypsum mortar surface layer and the cushion layer are both gypsum mortar with self-leveling property, the 28d absolute dry compressive strength of the gypsum mortar surface layer is not lower than 10MPa, and the 28d absolute dry compressive strength of the cushion layer is not lower than 2.5 MPa.
4. The gypsum sound insulation system of claim 1, wherein the gypsum mortar surface layer is gypsum mortar with self-leveling property, and the 28d absolute dry compressive strength of the gypsum mortar surface layer is not lower than 10 MPa; the cushion layer is made of foam concrete or ceramsite foam concrete, and the 28d compressive strength of the foam concrete or the ceramsite foam concrete is not lower than 2.5 MPa.
5. The gypsum sound insulation system of claim 1, wherein the gypsum mortar surface layer is gypsum mortar with self-leveling property, and the 28d absolute dry compressive strength of the gypsum mortar surface layer is not lower than 10 MPa; the cushion layer is vitrified micro-bead thermal insulation mortar or building thermal insulation mortar with the combustion grade of A grade, and the 28d compressive strength of the vitrified micro-bead thermal insulation mortar or the building thermal insulation mortar is not lower than 2.5 MPa.
6. The gypsum sound insulation system of claim 1, wherein a sound insulating coating, a sound insulating mortar, or a sound insulating felt is disposed under the cushion layer.
7. The gypsum sound insulation system according to any one of claims 1 to 6, wherein when ceramic tiles are used as the decorative layer, the surface layer of the gypsum mortar is treated with an interfacial agent, and ceramic tiles are adhered with a ceramic tile adhesive.
8. The gypsum sound insulation system according to any one of claims 1 to 6, wherein when wood floor is used as the decorative layer, the surface layer of the gypsum mortar is treated with an interfacial agent, and a foam plastic pad with the thickness of 1-5mm is laid; or the gypsum mortar surface layer is stuck with a wood floor by adopting an adhesive.
9. The gypsum sound insulation system according to claim 1, wherein an isolating film is treated or laid between the cushion layer and the floor slab by using an interfacial agent, and the thickness of the isolating film is not less than 0.15 mm.
10. The gypsum sound insulation system of claim 9, wherein an insulation board is laid below the isolation film, and the thickness of the insulation board is 10-30 mm.
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