HDPE Geomembrane (Dam Liner), Smooth, 0.3 mm
Imekaguliwa mara ya mwisho
Ni nini
Kitovu iliagiza dam liner hii kwa ajili ya kuzuia unyevu chini ya sakafu ya zege: karatasi hutandikwa juu ya ardhi kabla zege la sakafu halijamwagwa. Ni karatasi nyeusi ya plastiki aina ya HDPE (polyethylene yenye msongamano mkubwa), yenye uso laini na unene wa mm 0.3, sawa na micron 300. Faili letu linathibitisha malighafi, unene, uso laini na rangi nyeusi, na kumbukumbu za ghala la Kitovu zinaonyesha roli za upana wa m 4 na urefu wa m 100 (m² 400). Chapa, na kama plastiki ni mpya tupu au imechanganywa na iliyorejelezwa, bado havijulikani.
Kama jina dam liner linavyoonyesha, karatasi za aina hii hutandikwa pia kwenye malambo, mabwawa ya samaki, mifereji ya umwagiliaji na hifadhi za maji, ili maji yabaki ndani na yasizame ardhini. Jinsi tabaka la kuzuia unyevu la sakafu linavyoungana na lile la ukuta imeelezwa kwa Kiingereza: DPC and DPM (English).
Takwimu nyingine zote ni za watengenezaji wengine. Karatasi ya kiufundi ya UTD Geosynthetics kwa daraja lake la mm 0.30 inataja msongamano wa g/cm³ 0.94, takriban 97.5% polyethylene na 2.5% carbon black, nguvu ya kukatika ya N/mm 11 na ustahimilivu wa kutobolewa wa N 144; hizi ni takwimu za bidhaa inayofanana, hazijathibitishwa kwa bidhaa hii. UTD inataja kiwango cha GRI GM13, lakini kiwango hicho kinaanzia mm 0.75, kwa hiyo takwimu za karatasi ya mm 0.3 ni za mtengenezaji mwenyewe. Maelezo ya unene mbalimbali yapo kwa Kiingereza: dam liner and HDPE geomembrane (English).
| Kipimo | Thamani |
|---|---|
| Material | HDPE (high density polyethylene) |
| Surface | Smooth |
| Thickness | 0.3 mm |
| Colour | Black |
| Roll width | 4 m |
| Roll length | 100 m |
| Roll area | 400 m² |
| Intended application (owner's order) | Under-slab damp proofing |
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Vipimo vya bidhaa zinazofanana — havijathibitishwa kwa bidhaa hii
| Kipimo | Bidhaa zinazofanana |
|---|---|
| Density | 0.94 g/cm³ (ASTM D 1505) |
| Composition | approximately 97.5 % polyethylene, 2.5 % carbon black, trace antioxidants and heat stabilizers |
| Carbon black content (table) | 2.0 % (ASTM D 1603) |
| Strength at break | 11 N/mm width (ASTM D 6693, Type IV) |
| Strength at yield | 7 N/mm width (ASTM D 6693) |
| Elongation at break | 750 % |
| Elongation at yield | 17 % |
| Tear resistance | 45 N (ASTM D 1004) |
| Puncture resistance | 144 N (ASTM D 4833) |
| Oxidative induction time | > 100 minutes (ASTM D 3895) |
| Notched constant tensile load | 400 hrs (ASTM D 5397) |
| Melt index | ≤ 1.0 (ASTM D 1238, Cond. E) |
| UV resistance | «excellent resistance to UV radiation» |
| Reference standard | GRI GM13 (the standard starts at 0.75 mm; values for 0.3 mm are the manufacturer's) |
| Typical uses | Fish ponds, shrimp ponds, reservoirs, dams, canals, landfills, sewage plants, garden ponds |
Matumizi
Kabla ya kutandika, panga vipande kwa upana wa roli wa m 4 na urefu wa m 100. Jinsi vipande vinavyounganishwa kazini, kwa kuchomelea au kwa tepu, haijaandikwa kwenye faili letu, kwa hiyo ni swali la kumuuliza msambazaji.
Chini ya liner, karatasi za kiufundi za geotextile za g/m² 200 zinataja kulinda membrane za kuzuia maji kama mojawapo ya kazi zake; Non-Woven Needle-Punched Polypropylene Geotextile 200 g/m² inapatikana pia Zanzibar.
Kwa kazi za dam liner, tangazo la Lanhua la HDPE ya mm 0.3 na zaidi linataja mabwawa ya samaki na kamba, hifadhi za maji, mabwawa makubwa, mifereji, madampo ya taka, mitambo ya maji taka na mabwawa ya bustani. Orodha hiyo ni ya bidhaa inayofanana na haijathibitishwa kwa liner hii. UTD inasema HDPE yake ina “ustahimilivu mkubwa dhidi ya mionzi ya UV”; hilo pia halijathibitishwa kwa bidhaa hii.
Pia zinapatikana
Non-Woven Needle-Punched Polypropylene Geotextile 200 g/m²
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