Sound insulation mortar and sound insulation floor structure system

A sound insulation and mortar technology, which is applied in the direction of floors, sound insulation, floors, etc., can solve the problems of poor compatibility between the elastic sound insulation layer and cement mortar, high flatness requirements of the base layer, and sound bridges affecting the sound insulation effect, etc., to achieve saving Construction cost, high effective height, and the effect of avoiding easy cracking

Active Publication Date: 2021-03-23
SHENZHEN YIDONGYANG BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the related technologies mentioned above, the inventor believes that there are the following defects: the elastic sound insulation layer in the related technologies has poor compatibility with the cement mortar, and special bonding materials are needed to bond with the base layer, which is easy to produce hollowing and affects the smoothness of the base layer. The high precision requires cutting and splicing gap treatment. If it is not handled properly, it will easily form a sound bridge and affect the sound insulation effect, and it is necessary to thicken the elastic sound insulation layer to at least 30mm to meet the minimum standard of ≤75dB

Method used

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  • Sound insulation mortar and sound insulation floor structure system
  • Sound insulation mortar and sound insulation floor structure system
  • Sound insulation mortar and sound insulation floor structure system

Examples

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Effect test

Embodiment 1

[0028] This embodiment provides a kind of sound insulation mortar, and this sound insulation mortar is made by mixing the raw materials comprising the following parts by weight:

[0029] 500 parts of cement, 450 parts of elastic damping aggregate, 45 parts of viscosifying additive, 270 parts of river sand, 1 part of water-retaining thickening additive, and the water-binder ratio of the sound-proof mortar is 1:0.3; the cement uses 42.5R silicic acid salt cement.

[0030] Wherein, the elastic damping aggregate includes rubber powder and rubber granules, the mass ratio of rubber powder and rubber granules is 2.5:1; the mesh number of rubber powder is 40-120, and the mesh number of rubber granules is 1-3;

[0031] The main components of rubber powder and rubber granules are natural rubber, butadiene rubber and styrene-butadiene rubber;

[0032] The mesh number of river sand is 40-70;

[0033] The tackifier is dispersible latex powder;

[0034] The water-retaining thickener is a...

Embodiment 2

[0036] This embodiment provides a kind of sound insulation mortar, and this sound insulation mortar is made by mixing the raw materials comprising the following parts by weight:

[0037] 500 parts of cement, 450 parts of elastic shock-absorbing aggregate, 45 parts of thickening additive, 270 parts of river sand, 1 part of water-retaining thickening aid, 1 part of nano-alumina, 3 parts of polyether ether ketone powder, and sound-proof mortar The water-cement ratio is 1:0.3; the particle size of polyetheretherketone powder is 120-150μm, and the cement is 42.5R Portland cement.

[0038] Wherein, the elastic damping aggregate includes rubber powder and rubber granules, the mass ratio of rubber powder and rubber granules is 2.5:1; the mesh number of rubber powder is 40-120, and the mesh number of rubber granules is 1-3;

[0039] The mass ratio of polyetheretherketone powder and nano-alumina is 3:1;

[0040] The mesh number of river sand is 40-70;

[0041] The tackifier is dispers...

Embodiment 3

[0044] The difference between Example 3 and Example 2 is that the content of each component and the physical parameters of the sound insulation mortar are different, see Table 1 for details; wherein the water-retaining thickener is hydroxyethyl methyl cellulose ether.

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Abstract

The invention discloses sound insulation mortar and a sound insulation floor structure system. The sound insulation mortar is prepared from the following raw materials in parts by weight: 400-500 parts of cement, 300-500 parts of elastic damping aggregate, 30-50 parts of a tackifying aid, 250-290 parts of river sand and 0.5-2 parts of a water-retention thickening aid, wherein the water-binder ratio of the sound insulation mortar is 1: (0.3-0.5); and the elastic damping aggregate comprises rubber powder and rubber particles, and a mass ratio of the rubber powder to the rubber particles is (1.5-3): 1. Through grading between the rubber particles and the rubber powder, a good impact sound improvement effect is achieved, a sound insulation cushion layer does not need to be used, and building cost is greatly saved; and meanwhile, the defects that a protective layer is prone to cracking in a traditional floating construction method, and cross operation is prone to damage in the constructionprocess are effectively overcome.

Description

technical field [0001] The present application relates to the field of building sound insulation, in particular to a sound-insulation mortar and a sound-insulation floor structure system. Background technique [0002] Building sound insulation is divided into air sound insulation and impact sound insulation. The energy of solid sound has little attenuation in traditional building materials, and the propagation speed is faster than air, and the propagation distance is longer. For the commonly used 120mm cast-in-place concrete floor slab Generally speaking, the sound pressure level of impact sound is about 82dB, which cannot reach the minimum standard of ≤75dB, let alone the high standard of ≤65dB; therefore, the air sound insulation effect of continuous thick and hard concrete floors is good. Airborne sound insulation performance can meet the relevant national standards, but the effect on impact sound is poor, so the residents living in the lower floor generally cannot hear t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E04B5/00E04B1/82C04B111/52
CPCC04B28/04E04B5/00E04B1/82C04B2111/52C04B2111/00008C04B2201/20C04B2201/50C04B16/04C04B2103/0057C04B14/068C04B2103/44C04B14/303C04B24/32Y02W30/91
Inventor 李会全
Owner SHENZHEN YIDONGYANG BUILDING MATERIAL
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