Noise reducing mortar composition

Patent metadata

Field	Value
Publication number	US-2022220034-A1
Application number	US-202017603486-A
Country	US
Kind code	A1
Filing date	May 6, 2020
Priority date	May 6, 2019
Publication date	Jul 14, 2022
Grant date	—

Abstract

A mortar composition, in particular a leveling mortar composition, including: a) 10-50 wt. % of a hydraulic binder, b) 10-25 wt. % of lightweight aggregates, c) 30-50 wt. % of further aggregates which have a particle density that is higher than the particle density of the lightweight aggregates, d) 0.5-5 wt. % of a polymer.

First claim

1 . A mortar composition, comprising:
a) 10-50 wt. % of a hydraulic binder, b) 10-25 wt. % of lightweight aggregates, c) 30-50 wt. % of further aggregates which have a particle density that is higher than the particle density of the lightweight aggregates, d) 0.5-5 wt. % of a polymer.

2 . The mortar composition according to claim 1 , wherein the hydraulic binder comprises Portland cement as well as aluminate cement and/or sulphoaluminate cement with a weight ratio of Portland cement to aluminate cement and/or sulphoaluminate cement from 0.05-3.

3 . The mortar composition according to claim 1 , wherein a particle density of the lightweight aggregates is from 100-2,000 kg/m 3 .

4 . The mortar composition according to claim 1 , wherein the lightweight aggregates comprise porous inorganic particles.

5 . The mortar composition according to claim 1 , wherein the lightweight aggregates include two different types of particles, wherein a first type of particles have a particle size of 0.01-1,000 μm, and a second type of particles have a particle size of 0.01-4,000 μm.

6 . The mortar composition according to claim 5 , wherein a first type of particles are hollow silicate spheres and the second type of particles are expanded clay aggregates.

7 . The mortar composition according to claim 6 , wherein a weight ratio of the first type of particles to the second type of particles is from 1:2-10:1.

8 . The mortar composition according to claim 1 , wherein the polymer is a water soluble or water redispersible polymer, and/or wherein the polymer has a glass transition temperature of 45-10° C.

9 . The mortar composition according to claim 1 , comprising:
15-40 wt. %, of calcium aluminate cement and/or sulphoaluminate cement; optionally 3-18 wt. %, Portland cement; optionally 0.1-10 wt. % latent hydraulic and/or pozzolanic binder materials, especially slag and/or fly ash; 10-25 wt % of lightweight aggregates comprising porous inorganic particles and/or hollow inorganic particles; 30-50 wt. %, of further aggregates comprising quartz, sand and/or calcium carbonate; 0.5-5 wt. %, of a water soluble or water redispersible polymer; 0-10, wt. %, of one or more additives; whereby all amounts are with respect to the total weight of the mortar composition in dry state.

10 . A kit-of-parts comprising:
(i) a mortar composition according to claim 1 ; (ii) optionally mineral wool, slag wool and/or glass wool; (iii) optionally, an adhesive composition, whereby the adhesive composition comprises:
a) 10-50 wt. % of a hydraulic binder,
b) 20-60 wt. % of lightweight aggregates,
c) 10-25 wt. % of a polymer;
and whereby the adhesive composition is chemically different from the mortar composition; whereby, in addition to the mortar composition, the kit-of-parts comprises either mineral wool, or the adhesive composition, or both.

11 . The kit-of-parts according to claim 10 , whereby the mineral wool is present in the form of a flat plate or mat.

12 . A structure, a wall or a ceiling, comprising:
a substrate; a first layer, comprising mineral wool; a second layer, comprising the mortar composition according to claim 1 in hardened state; optionally, a third layer, comprising an adhesive in hardened state, the adhesive composition comprising:
a) 10-50 wt. % of a hydraulic binder,
b) 20-60 wt. % of lightweight aggregates,
c) 10-25 wt. % of a polymer;
optionally, a cover element.

13 . The structure according to claim 12 , whereby a thickness of the first layer is smaller than a thickness of the second layer and/or whereby a thickness of the third layer is smaller than a thickness of the first layer.

14 . A method comprising fixing tiles on a substrate using the mortar composition according to claim 1 .

15 . A method comprising providing acoustic damping, noise reduction and/or vibration reduction on floors, walls or ceilings of buildings and/or facilities using the mortar composition according to claim 1 .

Assignees

• Sika Tech Ag

Inventors

• Perrino Luigi
• Rattighieri Tiziano
• Borghi Alberto
• Granizo Luz

Classifications

• C04B14/12

  Expanded clay · CPC title

• C04B28/04 Primary

  Portland cements · CPC title

• Y02W30/91

  Use of waste materials as fillers for mortars or concrete · CPC title

• C04B40/065

  Two or more component mortars · CPC title

• C04B2111/52

  Sound-insulating materials · CPC title