Maitiro ekuita bvunzo dzeAdhesion Test​ uye bvunzo dzekufamba kwemvura |EN877:2021

Mapaipi esimbi akakandwaKuongororwa kwekunamatira uye kuyedzwa kwemvura inopisa neinotonhora zvichienderana neEN877, kunyanya kuongorora kuvimbika kwenguva refu uye kugara kwenguva refu kwemasisitimu avo ekudzivirira ngura, kunyanya mumamiriro ekushanda chaiwo. Miedzo iyi inowanzo tarisa machira anoshandiswa mukati nekunze kwemapaipi eSML (akadai se epoxy resins, polyurethanes, uye simende mortar linings). Kuongororwa kwekunamatira kunoyera zvakananga simba rekubatana pakati pemachira nesimbi yepasi pepombi yesimbi yakakandwa. Miedzo yekufambisa mvura inopisa neinotonhora inotevedzera kushanduka kwekushisa kunoitika nemapaipi ari kushandiswa chaiko, ichiongorora kugadzikana kwenguva refu kwesystem yekuvhara pasi pekumanikidzwa uku kwekupisa kunochinjana.

Kuedzwa kweKunamatira​

Kunamatira kwependi kunofanira kuongororwa chete pamasampuli anobva kuzvigadzirwa zvakapedzwa nekuyedzwa kwemuchinjikwa zvichienderana neEN ISO 2409, nenzira inotevera:

• Muenzaniso wekuyedza: chikamu chisingasviki 100 mm kureba chakachekwa kubva papombi yakafukidzwa kana chinobatanidza zviri nani saizi iri pasi peDN 100;
• nhamba yekucheka: 6;
• nzvimbo yekucheka: 2 mm (3 mm yekupenda ine ukobvu hushoma hwakatarwa nemugadziri hwakaenzana kana kupfuura 120 µm);
• Mhedzisiro yacho inofanira kuenderana neTafura 1.

Tafura 1:

Kuramba kutenderera kwekushisa

Bvunzo iyi inofanira kuitwa chete pamienzaniso inobva muzvigadzirwa zvakapedzwa. Kuunganidzwa kwebvunzo iyi kunofanira kuitwa ka1500 mvura inopisa neinotonhora zvichitevedza purogiramu inotevera:

a) (30 + 1) l yemvura patembiricha ye (93 + 2) °C kwenguva yeminiti imwe chete, pakuyerera kwakafanana,
b) kuzorora uye kubvisa mvura kwemaminitsi 1;
c)(30 + 1) l yemvura patembiricha ye (15 + 5)°C kwenguva yeminiti imwe chete, padanho risingachinji rekuyerera kwemvura,
d) nguva yekuzorora nekuburitsa mvura kwemaminitsi 1

Tembiricha yemvura inofanira kuyerwa panzvimbo yekupinda.Muenzaniso wegadziriro yekuedza yakajairika unoratidzwa muMufananidzo 3.

Mushure mekumisa bvunzo, mapaipi nezvishandiso zvinofanira kugezwa nekukasika kubvisa mavara. Mapaipi acho anofanira kupatsanurwa nekureba uye machira emukati anoongororwa kuti aone kana aine matumbu uye ngura zvisingapfuure mazinga anotevera:

Dhigirii rekuputika: Dimension 3, class 3 zvichienderana neEN IS0 4628-2:
Dhigirii rekuita ngura: Ri 2 zvichienderana neEN IS0 4628-3.