Mortar composition

Patent metadata

Field	Value
Publication number	US-2017283332-A1
Application number	US-201715625305-A
Country	US
Kind code	A1
Filing date	Jun 16, 2017
Priority date	Jul 26, 2012
Publication date	Oct 5, 2017
Grant date	—

Abstract

A mortar composition, in particular for preparing a viscoelastic body or structure, or for for acoustic damping of at least one of a ship, an offshore installation and a building, includes:
1-20 wt % of a hydraulic binder, 30-80 wt % of aggregates, 5-75 wt % of a polymer, and 0.5-40 wt % of a porous filler.

First claim

1 . A mortar composition comprising:
1-20 wt % of a hydraulic binder, 30-80 wt % of aggregates, 5-75 wt % of a polymer, and 0.5-40 wt % of a porous filler.

2 . The mortar composition according to claim 1 , wherein the polymer is a water soluble or a water redispersible polymer.

3 . The mortar composition according to claim 1 , wherein the polymer is a homopolymer or copolymer based on one or more monomers selected from the group consisting of vinyl acetate, vinyl alcohol, acrylic acid, acrylate, methacrylic acid, methacrylate and ethylene.

4 . The mortar composition according to claim 1 , wherein e porous filler comprises volcanic rock.

5 . The mortar composition according to claim 1 , wherein the hydraulic binder comprises alumina cement.

6 . The mortar composition according to claim 1 , wherein the aggregates is at least one selected from the group consisting of sand, quartz, and rubber.

7 . The mortar composition according to claim 1 , comprising:
3-20 wt %, of the hydraulic binder, whereby the hydraulic hinder comprises alumina cement, 40-70 wt %, of the aggregates, wherein the aggregates are at least one selected from the group consisting of sand and quartz, 15-40 wt %, of the polymer, whereby the polymer is at least one selected from the group consisting of polyacrylate, polyvinyl acetate), poly(vinyl alcohol), ethylene-vinyl acetate copolymer and ethylene-vinyl alcohol copolymer and mixtures thereof, 25 wt %, of the porous filler, wherein the porous filler is at least one selected from the group consisting of volcanic rock.

8 . A shaped body comprising the mortar composition according to claim 1 after hardening with water.

9 . The shaped body according to claim 8 , whereby the shaped body is a flat layer.

10 . The shaped body according to claim 8 , wherein a loss factor tan δ according to standard ISO 6721 at 0° C. and 300 Hz is at least 0.05.

11 . A structure comprising the shaped body according to claim 8 and a support element and/or cover element being attached to the shaped body.

12 . The structure according to claim 11 , whereby the shaped body is arranged between the support element and the cover element, whereby the support element is a metal layer, and the cover element is formed as flat layer.

13 . A method for the production of the structure according to claim 11 , whereby the mortar composition according to claim 1 is mixed with water, applied on a support structure and covered with a covering layer.

14 . The mortar composition according to claim 1 , wherein the mortar composition is configured for acoustic damping of at least one of a ship, an offshore installation and a building.

15 . The mortar composition according to claim 14 , whereby the acoustic properties or damping of the mortar composition are controlled by the polymer.

16 . The shaped body according to claim 8 , wherein the mortar composition is configured for acoustic damping of at least one of a ship, an offshore installation and a building.

17 . The shaped body according to claim 16 , whereby the acoustic properties or damping of the mortar composition and/or the shaped body are controlled by the polymer.

18 . The mortar composition according to claim 1 , wherein the porous material is at least one selected from the group consisting of pumice and perlite.

19 . The mortar composition according to claim 1 , wherein the amount of polymer is 15-40 wt %.

20 . The mortar composition according to claim 1 , wherein the amount of polymer is 25-35 wt %.

21 . The mortar composition according claim 1 , wherein the porous filler has a porosity of at least 25 vol % with respect to the total volume of the porous filler.

22 . The mortar composition according claim 1 , wherein the porous filler has a porosity of at least 50 vol % with respect to the total volume of the porous filler.

23 . The mortar composition according claim 1 , wherein the porous filler has a porosity of at least 75 vol % with respect to the total volume of the porous filler.

24 . The mortar composition according claim 1 , wherein the grain size of the porous filler is 4 mm or less.

25 . The mortar composition according claim 1 , wherein the grain size of the porous filler is 2 mm or less.

26 . The mortar composition according claim 1 , wherein the grain size of the porous filler is 1 mm or less.

Assignees

• Sika Tech Ag

Inventors

• Grisoni Luca

Classifications

• C04B2111/00612

  as one or more layers of a layered structure · CPC title

• C04B2103/0065

  Polymers characterised by their glass transition temperature (Tg) · CPC title

• C04B2111/00603

  Ceiling materials · CPC title

• C04B2111/62

  Self-levelling compositions · CPC title

• C04B2103/0057

  added as redispersable powders · CPC title