http://www.acksol.com Trials of the primer for concrete surfaces Controll#Innerseal to its chemical resistance for biogas plants, as a complemment to the design principles for silage and liquid manure containers made of reinforced concret accordind the requirements described in DIN 11622-2º( Date: October 1999)”

1. TÜV Rheinland LGA Bautechnik GmbH Emblem TÜV Rheinland®
(Technical Controll Rheinland, LGA Building technics Ltd) LGA
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Certified to DIN EN ISO 9001, DIN EN ISO 14001 y OHSAS 18001
REPORT Nº BBV 1212003 Date: 07.09.2012
Applicant: BetonSeal GmbH & Co.KG
Marienburger Strasse 7
50968 Colonia
Requested the: 04.05.2012 by Mr. Heidrich
Type of test: Trials of the primer for concrete surfaces
Controll#Innerseal to its chemical resistance for
biogas plants, as a complemment to the design
principles for silage and liquid manure containers
made of reinforced concret accordind the
requirements described in DIN 11622-2º( Date:
October 1999)”
Sample extraction: by the applicant
Sample delivery: 07.05.2012
Test period: 07.05. to 21.08.2012
Test responsible: Holger Wöhler
Phone Nº: +49 911 655-5291
Fax Nº: +49 911 655-5334
E-Mail: holger.woehler#de.tuv.com
This report is made up of 3 pages and attachment(s). TÜV Rheinland
LGA Bautechnik
The result of the tests outlined in this report refer exclusively to the aformentioned Tillystrasse 2
sample or material. 90431 Nürnberg
The result of this report may be reproduced only in its entirety. . Following
A partial reproduction is valid only wit the consent of the TÜV Rheinland Phone numbers
LGA Bautechnik GmbH. Manager
Reg.of commerce
To acces your request we filed the most relevant data. . Datos bancarios
Data protection is guaranted.
WEB: www.tuv.com

2. Page 2 of 3 Emblem TÜV Rheinland®
LGA
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REPORT Nº BBV 1212003 Date: 07.09.2012
1. Task
With date 10.04.2012 the TÜV Rheinland LGA Bautechnik GmbH was commisioned
by the company BetonSeal GmbH & Co KG to retested the primer for concrete
surfaces Controll#Innerseal to its chemical resistance for biogas plants, with regards
to an aqueoous solution of fermentacion acids with a 3 % of lactic acid, a 1,5 % acetic
acid and a 0,5 % butyric acid on the one hand and on the other a solution with 7 % of
(NH4)2HPO4 and a pH value between 8,5 and 9,0 as a complemment to the design
principles for silage and liquid manure containers made of reinforced concret accordind
the requirements described in DIN 11622-2º( Date: October 1999)”
2. Method of examination
The verification test to the chemical resistence were conducted on two cylindrical
samples of concrete sawing(diameter 150 mm). The serrated cores were send by the
applicant to the TÜV Rheinland LGA Bautechnik GmbH – Road construction. The
primer was conduct in seven spray applications (consumption: 800 g/ m2). According to
the applicant instructions the concrete used corresponds to a concret resistence class C
35/45 and exhibition class XA3. According the applicant the cement used is type
CEM-I. For the testing of presure were applied and were fixed on each of the cores
sawn a cilinder with an inside diametrer of 10 cm. and they were filled with the liquids
test. Liquids were subjected to a pressure of 1 bar with compressed air after. Test liquids
acted under this pressure the impregnated surface for 3 months. Test were carried out at
a room temperature( 20º to 23º C). Then conducted an analysis of the treated surfaces.
The characteristics investigated at the end of the storage period are detailled in the
following table:
State of the serrated cores before treatment
Brilliance Shining
Colour Grey
Stickiness Good
Hardness Shore D 69
The following chemical solutions were used for the pressure test:
Group type/ Testing liquid Observations
After 1 hour
Mix of fermentacion acids on the basis of
3% lactic acid, 1,5% acetic acid and 0,5 %
butyric acid
Surface clear up ( whitish )
But no change
Shore D 67
Solution with 7% of (NH4)2HPO4 with a
pH value between 8,5 and 9,0
Surface becomes dark ( dark grey )
But no change
Shore D 67

3. Page 2 of 3 Emblem TÜV Rheinland®
LGA
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REPORT Nº BBV 1212003 Date: 07.09.2012
3. Results and evaluation
Impregation system to proven to be effective against the liquid of the test for a period of
3 months.
TÜV Rheinland LGA Bautechnik GmbH
Road construction
Signature ( illegible )
Holger Wöhler Round seal
Qualified engineer Outside: TÜV Rheinland LGA Bautechnik GmbH
Director of testing Institut of materials testing
Inside: Emblem - TÜV Rheinland LGA
Title:
Report the Innerseal resistance to acids, according TÜV Rheinland testings