Construction method for lightweight sound-insulating damping mortar and building

A technology of damping sand and lightweight sand, applied in building structures, building components, buildings, etc., can solve the problems of impact sound pressure level not meeting the requirements of standard design, affecting actual effects, and damage to sound insulation pads.

Inactive Publication Date: 2015-12-16
杜飞月
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, floor slabs have certain requirements for airborne sound insulation and impact sound insulation. The thickness of residential slabs under construction in my country is basically 90-120mm thick reinforced concrete slabs, and the floor-weighted standardized impact sound pressure level cannot meet the specification design requirements.
To improve the impact sound insulation performance of the floor, the method of floating floor slab construction is usually adopted, that is, laying a layer of elastic cushion (sound insulation cushion) on the concrete floor, laying an insulation layer on the sound insulation cushion, and then pouring fine stone concrete cushion, this technology The solution can solve the requirement of floor impact sound insulation, but there are many cross processes in the project, and the staggered arrangement of electric wires and tubes on the floor makes it difficult to lay the sound insulation mat, which can easily cause the sound insulation mat to be damaged and form a sound bridge, which affects the actual effect

Method used

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  • Construction method for lightweight sound-insulating damping mortar and building
  • Construction method for lightweight sound-insulating damping mortar and building
  • Construction method for lightweight sound-insulating damping mortar and building

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Choose from the following proportions:

[0026]

[0027] Mix evenly according to the above percentage example, add an appropriate amount of water and stir evenly in a mixer, and perform a performance index test. The test data is as follows:

[0028] Apparent density: 920kg / m 3 , Tensile bond strength: 0.29Mpa, compressive strength: 3.8Mpa, linear shrinkage: 0.12%, thermal conductivity is 0.148W / m.k.

[0029] Take the 30mm thick lightweight sound insulation and damping mortar of this proportion and spread it on the reinforced concrete floor to test the impact sound improvement. The impact sound improvement is 21dB.

[0030] Select the above-mentioned lightweight sound insulation and damping mortar to apply on the 120mm thick reinforced concrete floor:

[0031] Design structure 1 is: (from bottom to top) 120mm thick reinforced concrete floor + 35mm thick lightweight sound insulation damping mortar + 15mm thick 1:2 cement mortar protective surface

[0032] The above-...

Embodiment 2

[0036] Choose from the following proportions:

[0037]

[0038] Mix evenly according to the above percentage example, add an appropriate amount of water and stir evenly in a mixer, and perform a performance index test. The test data is as follows:

[0039] Apparent density: 980kg / m 3 , Tensile bond strength: 0.31Mpa, compressive strength: 6.1Mpa, linear shrinkage: 0.18%, thermal conductivity: 0.166W / m.k.

[0040] The 30mm thick lightweight sound insulation and damping mortar with this ratio is fully spread on the reinforced concrete floor, and the improvement of impact sound is tested, and the improvement of impact sound is 13dB.

[0041] Select the above-mentioned lightweight sound insulation and damping mortar to apply on the 120mm thick reinforced concrete floor:

[0042] The design structure is: (from bottom to top) 120mm thick reinforced concrete floor + 45mm thick + 2mm thick cement slurry protective layer

[0043] The above-mentioned floor structure can also achie...

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Abstract

The invention provides a lightweight sound-insulating damping mortar for a building. The mortar is prepared from the following components by mass: 10 to 50% of an inorganic cementing material, 5 to 50% of rubber, 10 to 80% of lightweight sand and 0.01 to 20% of an additive. The invention also provides a lightweight sound-insulating floor. The lightweight sound-insulating floor is composed of the lightweight sound-insulating damping mortar (2) which is painted on the top of a concrete floor (1), a protection surface layer (3) which is painted on the lightweight sound-insulating damping mortar (2), and the lightweight sound-insulating damping mortar (2) which is painted on corners, climbs up to walls and exceeds the protection surface layer (3).

Description

Technical field: [0001] The invention belongs to the field of building materials and is suitable for thermal insulation and sound insulation treatment of building floors. Background technique: [0002] With the development of economy and society, the requirements for the comfort of buildings are getting higher and higher. Building floors, partition walls, and partition walls are required to have a certain thermal insulation effect and have a certain sound insulation effect. In particular, floor slabs have certain requirements for airborne sound insulation and impact sound insulation. The thickness of residential slabs under construction in my country is basically 90-120mm thick reinforced concrete slabs, and the floor-weighted standardized impact sound pressure level cannot meet the specification design requirements. . To improve the impact sound insulation performance of the floor, the method of floating floor slab construction is usually adopted, that is, laying a layer o...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B28/14E04B5/00E04B1/82C04B111/52
Inventor 杜飞月
Owner 杜飞月
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