Building rubber particle modified sound insulation mortar and preparation method thereof

Abstract

The invention relates to the technical field of building materials, and discloses rubber particle modified sound insulation mortar for buildings and a preparation method thereof.The rubber particle modified sound insulation mortar for the buildings is prepared from, by mass, 8-15 parts of modified rubber, 29.4-44.8 parts of cement mortar, 40-50 parts of aggregate and 8.5-15.9 parts of admixtures, waste rubber is smashed to form rubber particles, then the rubber particles are sieved, and the sieved rubber particles are dried to obtain the sound insulation mortar for the buildings. Rubber particles are soaked in a modifier to form an intermediate with a rough surface, then the intermediate is fished out, cleaned and dried, then the intermediate is soaked in emulsified asphalt for modification to prepare modified rubber, the modified rubber is fished out of the emulsified asphalt, and the modified rubber is stirred and mixed with cement mortar, aggregate and an additive to form the rubber particle modified sound insulation mortar. According to the sound insulation mortar and the preparation method thereof, the waste rubber is reused to prepare the sound insulation mortar, layering between the rubber and the mortar is avoided, the strength of the sound insulation mortar is guaranteed, and the safety of the sound insulation mortar is improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a sound-insulating mortar modified with rubber particles for building and a preparation method thereof. Background technique [0002] In recent years, people's sound insulation requirements for soundproof floors have gradually increased, so the research on soundproof materials for floors has become more and more important. Therefore, soundproof mortars have appeared, and soundproof mortars add soundproof materials into cement mortar, but The cost of sound insulation materials is high, so there is a sound insulation mortar prepared by modifying waste rubber. When the sound wave is incident on the surface of the sound insulation mortar, part of the sound energy is absorbed by the rubber and converted into heat energy, which increases the conversion of sound energy into heat energy. The conversion rate is consumed through intermolecular friction, which weakens high-freque...

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Problems solved by technology

[0004]The thermal insulation and sound insulation dry powder mortar improves the vibration and noise reduction and sound insulation performance of the mortar by adding rubber, but due to the hydrophobic characteristics of the surface of the rubber particles, the rubber particles and the mortar The compatibility of waste rubber particles is poor, and the waste rubber particles are directly mixed into the mortar, which is easy to float and form layers. The rubber particles cannot be evenly dispersed in the mortar, which not only has no sound insulation effect, but also leads to insufficient mechanical properties of the mortar and later cracking, etc. condition, reducing the safety performance of mortar

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