Nii sai 2018. aasta augustis loodud ettevõte WPMEstonia OÜ, mis tegeleb betoonkonstruktsiooni töövuukide ja kontrollitud pragude hüdroisolatsiooni lahendustega. Olles juba 10 aastat kasutanud betooni veekindlaks tegemisel kristallilist lisandit, olid välja tulnud selle süsteemi kitsaskohad. Lahenduseks mõeldi välja tapikujuline CRACK INDUCER PROFILE.

Mis on WPM® praotekitaja profiil? 

The WPM CRACK INDUCER profile is part of a three-part waterproofing solution or “white tank” method. The profile is designed to work with other WPM construction joint profiles and crystalline admixture.

By its nature, the WPM CRACK INDUCER profile creates a pin-shaped crack in the concrete structure when it adheres tightly to the concrete. Perpendicular to it is a perforated steel sheet with a mineral coating that makes the resulting shrinkage crack waterproof and thus prevents water from penetrating the building. The purpose of the pin-shaped crack is to maintain the strength of the structure so we can use the profile in load-bearing structures.

Mis on profiili eesmärk? 

Profiili eesmärk on lihtsustada raudbetoonkonstruktsioonide hüdroisoleerimist ning kiirendada betooni valuprotsessi. Kui tavaliselt valatakse betoonkonstruktsioone etappides, et minimeerida betooni kuivamisel mahukahanemisest tekkivaid veelekkelisi pragusid, siis WPM® Praotekitaja profiilii kasutades saame tekkivaid mahukahanemispragusid juhtida ning profiilil oleva veekindla teraslehega hüdroisoleerida.

Kuidas WPM® Praotekitaja profiiliga vähema ajaga rohkem betooni valada? 

As we know, concrete is a material that shrinks as it hardens, so it is necessary to consider this when constructing the structure. We can reduce the shrinkage by adding more reinforcement rebars to the concrete. In principle, if desired, it is possible to pour the concrete with a more considerable amount of reinforcement than usual without shrinkage. This means that if the amount of iron in the structure is such that the tensile strength of the reinforcement exceeds the tensile strength of the concrete, no shrinkage cracks will occur. However, this would raise the construction cost unreasonably high, and this approach is generally not used.

This is where the efficiency of the WPM CRACK INDUCER profile comes in. It allows you to keep the amount of reinforcement in the design reasonable and enable the profile to create controlled cracks exactly where we want them.

Because the profile allows us to control shrinkage cracks and make them waterproof, we don’t have to worry about accidental cracks when pouring large amounts of concrete at once. In this way, after the concrete has hardened, we can pour all the walls simultaneously. The same applies to the basement ceilings.

However, we would like to point out that the pouring pipe has to be as low as possible at the bottom of the formwork when pouring concrete into the formwork. In that way, it does not separate the concrete mixture into larger and smaller parts of the concrete if it falls to the base against the edge of the reinforcement. In this case, larger pieces usually fall to the bottom of the floor before and do not allow to form a dense concrete form around the construction joint profile or WPM CRACK INDUCER profile. This, in turn, is likely to cause water to seep through the structure. We have seen this problem times and times again over the years and have eliminated the consequences. From experience, we can make recommendations to help you avoid these costly mistakes.

We are aware of the routines of how concrete is poured. Still, in our opinion, a well-thought-out, careful, and perhaps a little more timely casting process outweighs the leaking structure, which must be re-waterproofed with additional resources later.

Millistel objektidel oleme WPM® Praotekitaja kasutanud? 

Praotekitaja profiili oleme kasutanud järgmistel objektidel:

        Eestis:

• Kiikri 6, Tallinn
  
• TÜ Kliinikumi juurdeehitus, Tartu
  
• Taime 6, Tallinn
  
• Tammsaare 86, Tallinn
  
• Valge 16, Tallinn
  
  Lätis:
  
  
• Tērbatas iela 72, Riga
  
• Rūpniecības iela 27, Riga
  
• Marijas iela 2a, Riga
  
• Lauku iela 23, Riga
  
  Leedu:
  
  
• Manufaktūrų g. 7, Vilnius.
  

3D Automatic Crack Inducer Calculator

Kokkuvõtteks 

WPM CRACK INDUCER profiilil on 2 eesmärki:

• hüdroisoleerida mahukahanemisest tekkivad praod,
  
• juhtida mahukahanemisest tekkivaid pragusid, et oleks võimalik korraga rohkem betooni valada ja aega kokku hoida.
  

Väike kalkulatsioon näitab, et WPM® Praotekitaja profiilide kasutamine betoonkonstruktsioonide valu-ja hüdroisoleerimisprotsessides annab olulise eelise nii rahalises kui ka ajalises kokkuhoius. Profiil aitab võrreldes rullmembraani või võõbatavate hüdroisolatsioonimaterjalidega vähendada hüdroisolatsioonikulusid pea poole võrra.

  Kalkulatsioonid koos materjali ja töötundidega:

WPM CRACK INDUCER profiil on WPMEstonia OÜ poolt välja arendatud toode, mis on hetkel patenteerimisel.

Kui soovid teada, kas ja kuidas saame „valge vanni„ meetodil teha ka Sinu betoonkonstruktsioone veekindlaks ning kiirendada valuprotsessi, siis võta meiega ühendust ja vaatame koos projekti üle.