Pervious concrete composition

Patent metadata

Field	Value
Publication number	US-9670094-B2
Application number	US-200913132798-A
Country	US
Kind code	B2
Filing date	Dec 3, 2009
Priority date	Dec 5, 2008
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

The invention relates to pervious concrete compositions containing hydraulic binder, filler and polymer, characterized in that the polymer present is a vinyl acetate-ethylene-copolymer having a glass transition temperature Tg of ≦20° C.

First claim

The invention claimed is:

1. A pervious concrete composition with a cavity volume between 10 and 35 vol. %, containing hydraulic binder, filler and polymer, wherein a vinyl acetate-ethylene copolymer with a glass transition temperature T g of ≦20° C. is contained as the polymer.

2. The pervious concrete composition as claimed in claim 1 , wherein a protective colloid-stabilized vinyl acetate-ethylene copolymer is contained.

3. The pervious concrete composition as claimed in claim 1 , wherein the glass transition temperature T g is −10° C. to +15° C.

4. The pervious concrete composition as claimed in claim 1 , wherein the glass transition temperature T g is −10° C. to +8° C.

5. The pervious concrete composition as claimed in claim 1 , wherein the glass transition temperature T g is −10° C. to 0° C.

6. The pervious concrete composition as claimed in claim 2 , wherein as the protective colloid partly saponified polyvinyl alcohols with a hydrolysis level from 80 to 95 mol. % and a Höppler viscosity, in 4% aqueous solution, of 1 to 30 mPas are contained.

7. The pervious concrete composition as claimed in claim 1 , wherein copolymers with 75 to 90 wt. % of vinyl acetate and 10 to 25 wt. % of ethylene are contained.

8. The pervious concrete composition as claimed in claim 1 , wherein copolymers of 30 to 90 wt. % of vinyl acetate with 1 to 25 wt. % of ethylene and 1 to 50 wt. % of one or more further comonomers selected from the group consisting of the vinyl esters with 3 to 12 C atoms in the carboxylic acid residue are contained.

9. The pervious concrete composition as claimed in claim 1 , wherein copolymers of 30 to 90 wt. % of vinyl acetate, 1 to 25 wt. % of ethylene and 1 to 60 wt. % of (meth)acrylic acid esters of unbranched or branched alcohols with 1 to 15 C atoms are contained.

10. The pervious concrete composition as claimed in claim 1 , wherein copolymers of 30 to 90 wt. % of vinyl acetate, 1 to 30 wt. % of vinyl laurate or vinyl esters of an alpha-branched carboxylic acid with 9 to 11 C atoms, and 1 to 30 wt. % of (meth)acrylic acid esters of unbranched or branched alcohols with 1 to 15 C atoms, which also contain 1 to 25 wt. % of ethylene, are contained.

11. A road construction or hydraulic engineering composition comprising the pervious concrete composition as claimed in claim 1 .

12. A concrete filter molding or noise protection wall comprising the pervious concrete composition as claimed in claim 1 .

Assignees

• Sorger Klas
• Bezler Jürgen
• Wacker Chemie Ag

Inventors

• Sorger Klas
• Bezler Jürgen

Classifications

• C04B28/02 Primary

  containing hydraulic cements other than calcium sulfates · CPC title

• C04B2103/50

  Defoamers, air detrainers · CPC title

• C04B2111/74

  Underwater applications · CPC title

• C04B2111/0075

  for road construction · CPC title

• C04B2111/00793

  as filters or diaphragms · CPC title