Chidule cha Self-Leveling Compound

Zodziyimira pawokha, zida zofunikira muukadaulo wamakono womanga pansi, zimapangidwa kuchokera ku simenti ya Portland, zophatikiza zabwino, ma polima ogwira ntchito, ndi zowonjezera zapadera. Katundu wawo wapadera wodziyimira pawokha umachokera ku slurry yamadzimadzi kwambiri yomwe imapangidwa pambuyo posakanikirana, yomwe imatha kukhazikika pansi pa mphamvu yokoka kuti ipange maziko osalala okhala ndi makulidwe kuyambira 3mm mpaka 50mm.

Zomwe zimagwiritsidwa ntchito ndi mafakitale (mwachitsanzo, pansi zolondola kwambiri m'malo opangira magalimoto), malo ochitira malonda (mwachitsanzo, malo akuluakulu osamva kuvala m'masitolo akuluakulu), ndi ntchito zogona zapamwamba (monga kusanja kwa makina otenthetsera apansi).

Zomangamanga Ubwino

Poyerekeza ndi njira zachikhalidwe zopangira matope, zodzipangira zokha zimakulitsa luso la zomangamanga ndi 40% -60%. Kuchiritsa kwawo mwachangu kumafupikitsa nthawi ya projekiti, kuwapangitsa kukhala oyenera "kumanga usiku - kubweretsa tsiku lotsatira" pama projekiti okonzanso.

Chifukwa chiyani mugwiritse ntchito HPMC mu Self-Leveling Compound? Kodi Performance ili bwanji?

a. Malamulo osunga madzi

Mamolekyu a HPMC amadsorbetsa madzi kudzera m'mabondi a haidrojeni, ndikupanga maukonde amitundu itatu omwe amawonjezera kusungidwa kwamadzi amatope mpaka 90% (poyerekeza ndi 75% popanda HPMC). M'madera otentha kwambiri (> 30 ° C), kusankha HPMC ndi kutentha kwa gelation ≥65 ° C kuchedwetsa kutuluka kwa madzi, kuteteza kutaya mphamvu chifukwa cha kuchepa kwa simenti.

b. Rheological Property Optimization

• Kuwongolera Kuyenda: Otsika mamasukidwe akayendedwe HPMC (mwachitsanzo, 400Mpas) amachepetsa zokolola nkhawa, kukwaniritsa koyamba otaya makhalidwe a 180-220mm kwa woonda-wosanjikiza kudzikonda leveling (3-5mm); mitundu yapamwamba-makamaka (mwachitsanzo, 15000Mpas) kumapangitsanso thixotropy, kupewa kuphatikizika kwamatope muzomangamanga zosanjikiza (10-50mm) kuonetsetsa kusalimba yunifolomu.

• Synergistic Mmene: Mukaphatikizidwa ndi zochepetsera madzi a polycarboxylate, HPMC imaletsa tsankho. Pa 0.3% yochepetsera madzi ndi 0.12% HPMC, kutayika kwa mphindi 30 ≤10%, kukwaniritsa zofunikira zomwe zimadalira nthawi kuti zidzichepetse.

c. Shrinkage ndi Kuletsa Kusweka

Pochedwetsa hydration ya simenti (kutalikitsa nthawi yokhazikitsa koyamba ndi mphindi 15-30), HPMC imachepetsa kupsinjika koyambirira ndi 30%.M'mayeso owumitsa a shrinkage, matope okhala ndi HPMC amawonetsa kuchepa kwa masiku 28 kwa 0.018%, kutsika kwambiri kuposa 0.035% kwa zitsanzo zomwe si za HPMC, kuchepetsa kuchepa kwapang'onopang'ono.

Momwe mungasankhire HPMC yoyenera kuti ifanane ndi Zomangamanga Zodziyimira Pamodzi?

Industrial-grade HPMC amagawidwa ndi mamasukidwe akayendedwe a 2% yankho amadzimadzi mu otsika mamasukidwe akayendedwe ( 30000Mpas) mitundu, kusamalira zofunika zosiyanasiyana zomangamanga.

Ma Metrics OfunikaZa Zomangamanga ZosiyanasiyanaZochitika

Chitsanzo Chopanga (Kudzilimbitsa pa Gypsum):Mapangidwe Oyambira: α-hemihydrate gypsum 60%, calcium carbonate 30%, mchenga wa quartz (80-120 mesh) 10%; Zowonjezera: HPMC (20000mPa·s, 0.18%), retarder (tartaric acid, 0.05%), chochepetsera madzi (melamine-based, 0.3%.(Izi ndi zanu zokha) 

Mapeto

Monga chowonjezera chogwira ntchito mumagulu odzipangira okha,Mtengo wa HPMCzimakhudza momwe zinthu zikuyendera panthawi yonse yokonzekera, kumanga, ndi moyo wautumiki. Ndi kuchuluka kwa zofuna za pansi mwatsatanetsatane pomanga mafakitale,Mtengo wa HPMCukadaulo wosankha ndi kugwiritsa ntchito udzakhala woyengedwa komanso wanzeru.