Dr. Andreas Koch

1
Hygienic requirements for cement-bound materials
in contact with drinking water

• Dr. Andreas Koch

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Cement bound materials in drinking water supply

• more then 100 years cement-bound materials
  in drinking water supply
• For example, Infiltration buildings, Reservoirs,
  Drinking water treatment works, Storage
  reservoirs, Pump discharge pipeworks, Cement
  mortar linings for cast iron and steel pipes

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Cement-bound materials in drinking water contact
Water-hygienic requirements
Architectural requirements
DIN EN 206-1 DIN 1045-2 DIN EN 1508 DVGW W
311 DVGW W 312 DVGW-W 300
DVGW W 347 DVGW W 270 (if organic constituents
used)
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DVGW technical standard W 347

• first edition in October 1999
• implementation of European Standards for
  cement, aggregate, admixtures etc.
• new knowledges of AHG 6 Influence of
  cementitious products on water intended for
  human consumtion of WG 3 of CEN/TC 164 water
  supply
• as of year 2002 start with the revision of
  DVGW working sheet W 347, to adapt it to the
  state of the art and to the relevant European
  Standards
• Mai 2006 actual edition

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Area of application I Cement mortar linings for cast iron and steel pipes II Concrete pipes gt 300 mm, concrete tanks, ... III Tile adhesive, pointing mortar, repair mortar IV Concrete components in drinking water protection zones I, II o III
Requirements for Constituents Requirements for Constituents Requirements for Constituents
Cement DIN EN 197-1 a. DIN 1164 or cements with appropriate building inspectorate approval a. high-alumina cements complying with DIN EN 14647 DIN EN 197-1 a. DIN 1164 or cements with appropriate building inspectorate approval a. high-alumina cements complying with DIN EN 14647 DIN EN 197-1 a. DIN 1164 or cements with appropriate building inspectorate approval a. high-alumina cements complying with DIN EN 14647 DIN EN 197-1 a. DIN 1164 or cements with appropriate building inspectorate approval a. high-alumina cements complying with DIN EN 14647
Aggregate DIN EN 13139 DIN EN 13139 DIN EN 12620 DIN EN 13139 DIN EN 12620 DIN EN 13139 DIN EN 12620
Mixing water The mixing water shall comply with DIN 1045-2 appropriate drinking water or water similar to drinking water with electr. conduct. lt 2000 µS/cm and KMnO4-Index The mixing water shall comply with DIN 1045-2 appropriate drinking water or water similar to drinking water with electr. conduct. lt 2000 µS/cm and KMnO4-Index The mixing water shall comply with DIN 1045-2 appropriate drinking water or water similar to drinking water with electr. conduct. lt 2000 µS/cm and KMnO4-Index The mixing water shall comply with DIN 1045-2 appropriate drinking water or water similar to drinking water with electr. conduct. lt 2000 µS/cm and KMnO4-Index
10 mg/l 20 mg/l not exceeds (as O2) 20 mg/l not exceeds (as O2) 20 mg/l not exceeds (as O2)
Additions Shall comply DIN 1045-2 Shall comply DIN 1045-2 Shall comply DIN 1045-2 or with appropriate building inspectorate Shall comply DIN 1045-2 or with appropriate building inspectorate
Inorganic additions, consisting of the components 1.1 to 1.4 Inorganic additions, consisting of the components 1.1 to 1.4 Inorganic additions, consisting of the components 1.1 to 1.4 Inorganic additions, consisting of the components 1.1 to 1.4
Inorg. Pozzol. Add. lt 10 M Inorg. not Pozzol. Add. lt 3 M and org. Additions consisting of the components 2.1 and org. Additions consisting of the components 2.1 and org. Additions consisting of the components 2.1
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Area of application I Cement mortar linings for cast iron and steel pipes II Concrete pipes gt 300 mm, concrete tanks, ... III Tile adhesive, pointing mortar, repair mortar IV Concrete components in drinking water protection zones I, II o III
Admixtures no provision Admixtures shall comply with DIN 1045-2 Admixtures shall comply with DIN 1045-2 Admixtures shall comply with DIN 1045-2
Concrete plasticizers, super-plasticizers Retarders consist. of components 3.4 a. 4.1-4.6 Cement mortar for Tank linings consisting of comp. 3.1-3.6 a. 4.1-4.13 Concrete plasticizers, super-plasticizers consist. of components 4.1-4.4 Tile adhesives pointing mortar... consisting of comp. 3.1-3.6 a. 4.1-4.13 Admixtures consist. of comp. 3.1-3.6 a. 4.1-4.13 CM-covering a. FZM-covering of pipes accord. to DIN 30674-2 or DVGW GW 340
Pigments no provision shall comply with DIN 1045-2 consisting of comp. 5 shall comply with DIN 1045-2 consisting of comp. 5 shall comply with DIN 1045-2 consisting of comp. 5
Fibres no provision with appropriate building inspectorate approval consisting of comp. 6.1-6.3 with appropriate building inspectorate approval consisting of comp. 6.1-6.3 with appropriate building inspectorate approval consisting of comp. 6.1-6.3
Auxiliary agents no provision consisting of comp.7.1-7.4.5 consisting of comp.7.1-7.4.5 consisting of comp.7.1-7.4.5
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DVGW technical standard W 347
Product test (cement mortar linings for cast iron
pipe)
Testing of Constituents (mortar prisms)
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DVGW technical standard W 347

• Drinking water hygienic requirements

Requirements for Constituents
Requirements for products
Testing of all Constituents (f. e. Cement,
Admixtures, Additives)
Product test at the finished product (f. e.
cement mortar linings for cast iron or steel
pipes)
Requirements are fulfilled
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DVGW technical standard W 347

• Migration test
• performing of the test pieces (mortar prisms)
• storing of the test pieces according to DIN EN
  196-1 (max. 28 d.)
• preconditioning of the test pieces (last 8 days
  of storage) preconditioning water according to
  DIN EN 14944-1
• migration test 3 x 72 h (reference water accord.
  DIN EN 14944-1)
• If organic Additives, Admixtures, Pigments,
  Fibres or Auxiliary Agents
• Testing of odour with reference water
  containing 1 mg/l free Cl2
• microbiological growth test according to DVGW W
  270

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Preconditioning
discard precond. water (2x)
discard precond. water
discard precond. water
Migration test
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Migration test
Test pieces f.e. moulded pipes or
prisms (without organic constituents)
Test pieces f.e. moulded pipes or prisms (with
organic constituents)
3 test steps each 72 h Reference water pH 7,4
elect. Cond. 500 µS/cm Ca 80 mg/l 350 mg/l
HCO3- SiO2 15 mg/l
3 test steps each 72 h Reference water Cl2
1,0 mg/l
Neutralize chlorine
Sampling and Analysis (Odour), Colour, Turbidity
TOC release, Metals
Odour
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Area of application I Cement mortar linings for cast iron and steel pipes II Concrete pipes gt 300 mm, concrete tanks, ... III Tile adhesive, pointing mortar, repair mortar IV Concrete components in drinking water protection zones I, II o III
Drinking water hygienic requirements Drinking water hygienic requirements Drinking water hygienic requirements
Migration test Migration test Migration test Migration test Migration test
Outer behaviour No change of test water No change of test water No change of test water No requirements (n. r.)
TOC-release 2,5 mgxm²xd-1 10 mgxm²xd-1 15 mgxm²xd-1 n. r.
As- release 0,05 mgxm²xd-1 0,05 mgxm²xd-1 0,05 mgxm²xd-1 0,05 mgxm²xd-1
Pb-release 0,1 mgxm²xd-1 0,1 mgxm²xd-1 0,1 mgxm²xd-1 0,1 mgxm²xd-1
Cd-release 0,05 mgxm²xd-1 0,05 mgxm²xd-1 0,05 mgxm²xd-1 0,05 mgxm²xd-1
Cr-release 0,3 mgxm²xd-1 0,3 mgxm²xd-1 0,3 mgxm²xd-1 0,3 mgxm²xd-1
Ni-release 0,2 mgxm²xd-1 0,2 mgxm²xd-1 0,2 mgxm²xd-1 0,2 mgxm²xd-1
Li-release n. r. 0,3 mgxm²xd-1 0,3 mgxm²xd-1 n. r.
DVGW W 270 n. r. If organic Additives, Admixtures used, microbial growth test (W 270) If organic Additives, Admixtures used, microbial growth test (W 270) n. r.
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DVGW Working Standard W 347

• Positive list (annex A )
• toxikologic assesst substances
• A1 Inorganic Additions
• A2 Organic Additions
• A3 Admixtures-Inorganic Constituents
• A4 Admixtures -Organic Constituents
• A5 Pigments
• A6 Fibres
• A7 Auxiliary Agents
• A8 Auxiliary Agents in Additions, Admixtures