Kusiyana Pakati pa Plasticizer ndiSuperplasticizer

Konkirendi zinthu zomangira zomwe zimagwiritsidwa ntchito kwambiri padziko lonse lapansi chifukwa cha kulimba kwake, mphamvu zake, komanso kusinthasintha kwake. Komabe, ntchito yake imadalira kwambiri kamangidwe kakusakaniza ndi kugwiritsa ntchito mankhwala osakaniza. Zina mwa zosakaniza izi,plasticizersndisuperplasticizerskhala ndi maudindo ofunikira pakupititsa patsogolo magwiridwe antchito ndi mphamvu ya konkriti. Ngakhale kuti zingawoneke zofanana mu ntchito, zimasiyana kwambiri ndi mankhwala, machitidwe, ndi ntchito. Wotsogolera amafufuza zakusiyana kwakukulu pakati pa plasticizers ndi superplasticizers, mitundu yawo, ubwino, malire, ndi kagwiritsidwe ntchito koyenera.

Mau oyamba a Admixtures mu Konkire

Zosakaniza za konkritindi zinthu zowonjezeredwa kusakaniza konkire isanayambe kapena panthawi yosakaniza kuti isinthe katundu wake. Izi zikuphatikiza kufulumizitsa kapena kuchedwetsa nthawi yokhazikitsa, kuwongolera magwiridwe antchito, kuchepetsa kufunikira kwa madzi, kuwonjezera mphamvu, kapena kukulitsa kulimba. Plasticizers ndi superplasticizers ndi madzi osakaniza admixtures opangidwa kuti achepetse kuchuluka kwa madzi ofunikira kuti akwaniritse ntchito inayake.

Kodi Plasticizer ndi chiyani?

Tanthauzo

A plasticizer, yomwe imatchedwanso kuti madzi ochepetsera madzi, ndi mankhwala osakaniza omwe amalola kuchepetsa madzi (pafupifupi 5-15%) mu kusakaniza konkire popanda kusokoneza ntchito yake.

Chemical Composition

Plasticizers nthawi zambiri amapangidwa ndi:

• Lignosulfonates
• Hydroxylated carboxylic acid
• Kusinthidwa lignosulfonates

Njira Zochita

Plasticizers amagwira ntchito pomwaza tinthu tating'ono ta simenti mu kusakaniza, zomwe zimachepetsa kukangana pakati pawo. Izi zimathandiza kuyenda bwino kwa konkire ndi madzi ochepa.

Ubwino

• Imawongolera magwiridwe antchito
• Imawonjezera mphamvu zoyamba komanso zomaliza
• Amachepetsa chiŵerengero cha simenti ya madzi
• Imawonjezera kutha kwa pamwamba

Ntchito Wamba

• Ntchito zomangamanga zonse
• Okonzeka-kusakaniza konkire
• Konkire yapakati-mphamvu (20–40 MPa)

Kodi Superplasticizer ndi chiyani?

Tanthauzo

A superplasticizer, kapena mkuluchochepetsera madzi(HRWR), ndi mankhwala osakaniza omwe amachepetsa madzi ndi 12-30% pamene akuwonjezera kwambiri madzi osakaniza.

Chemical Composition

Superplasticizers amapangidwa kuchokera ku:

• Sulfonated naphthalene formaldehyde (SNF)
• Sulfonated melamine formaldehyde (SMF)
• Polycarboxylate ethers (PCEs)
• Ma polima a Acrylic

Njira Zochita

SuperplasticizersPCE imapereka kubalalitsidwa kwamphamvu kwa tinthu tating'ono ta simenti, zomwe zimapangitsa kuti madzi aziyenda bwino komanso aziyenda bwino. Izi zimathandiza kupanga konkire yogwira ntchito kwambiri pamadzi otsika a simenti.

Ubwino

• Imalola kudziphatika konkire
• Zimathandizira kwambiri magwiridwe antchito
• Amapeza mphamvu zapamwamba komanso zomaliza
• Imawonjezera kutha kwa pamwamba komanso kukhazikika

Ntchito Wamba

• Konkire yogwira ntchito kwambiri (HPC)
• Konkire yamphamvu kwambiri (> 60 MPa)
• Precast ndi prestressed zinthu
• Zomangamanga konkire

Kusiyana Kwakukulu Pakati pa Plasticizers ndi Superplasticizers

Kuyerekeza Kwakuya: Plasticizer vs. Superplasticizer

1. Kuchepetsa Madzi Mwachangu

Mapulasitiki amatha kuchepetsa gawo laling'ono la madzi, pamene ma superplasticizers amapangidwa kuti achepetse madzi kwambiri, zomwe zimathandiza kuti madzi otsika kwambiri a simenti azitha kusakaniza mwamphamvu kwambiri kapena kuthamanga.

2. Zotsatira pa Kugwira Ntchito

Ma superplasticizers amapanga konkriti yothamanga kwambiri yoyenera kudzipangira konkriti (SCC), pomwe mapulasitiki amathandizira kutsika pang'ono.

3. Kukulitsa Mphamvu

Chifukwa amalola kutsika kwa simenti yamadzi, ma superplasticizers amathandizira kwambiri pakupeza mphamvu zapamwamba poyerekeza ndi mapulasitiki.

4. Kugwirizana ndi Zosakaniza Zina

Ma plasticizers ndi superplasticizers atha kugwiritsidwa ntchito ndi zosakaniza zina (mwachitsanzo, retarders, accelerators), koma kuyezetsa koyenera kumafunika kupewa zoyipa.

5. Mtengo Mwachangu

Ngakhale ma superplasticizers ndi okwera mtengo kwambiri, amatha kuchepetsa kuchuluka kwa simenti yofunikira, kupereka phindu lanthawi yayitali pamapulojekiti akuluakulu kapena apamwamba.

Mitundu ya Superplasticizersndi Plasticizers

Common Plasticizers

• Calcium lignosulfonate
• Hydroxycarboxylic acid
• Mashuga osinthidwa

Common Superplasticizers

• SNF (Sulfonated Naphthalene Formaldehyde): Amagwiritsidwa ntchito mu precast ndi high-flow applications.
• SMF (Sulfonated Melamine Formaldehyde): Kukonzekera mwachangu, koyenera kwa mayunitsi a precast.
• Polycarboxylate Ethers (PCEs): Zosakaniza zogwira mtima kwambiri pakuchita bwino kwambiri ndi SCC.

Ubwino ndi Kuipa kwake

Plasticizers

Ubwino:

• Zotsika mtengo zogwiritsidwa ntchito wamba
• Imawongolera magwiridwe antchito
• Imawonjezera kumaliza

Zoyipa:

• Kuchepetsa madzi ochepa
• Ikhoza kuchedwetsa kuyika pang'ono

Superplasticizers

Ubwino:

• Kugwira ntchito kwakukulu komanso kusungika kwamphamvu
• Imayatsa konkriti yogwira ntchito kwambiri
• Kupititsa patsogolo mphamvu ndi kukhalitsa

Zoyipa:

• Zokwera mtengo
• Zomverera ku kusintha kwa mlingo
• Mitundu ina ingachepetse nthawi yokhazikitsa kwambiri

Mfundo Zothandiza Posankha Kusakaniza Koyenera

Zofunika Kuziganizira:

• Mtundu wa polojekiti: General zomangamanga vs. mkulu-ntchito
• Kutentha kofunikira: Otsika mpaka apakati vs. apamwamba kwambiri
• Zolinga zamphamvu: Standard vs. high-mphamvu konkire
• Kuchiritsa zinthu: Kutentha kapena kuzizira
• Kuvuta kwa formwork: Zoumba zosavuta kapena zovuta

Zitsanzo:

• Kugwiritsa ntchito pulasitiki: Kuthira ma slabs a nyumba yokhalamo.
• Kugwiritsa ntchito superplasticizer: Kupopa konkire pamwamba pa nyumba ya nsanjika 50.

Zachilengedwe ndi Kukhazikika

Superplasticizers, makamaka ma PCE, amathandizira kugwiritsa ntchito madzi otsika ndi simenti, zomwe zimachepetsa mpweya wa konkriti. Izi zimawapangitsa kukhala gawo lofunikira pakumanga kokhazikika.

Kugwiritsa ntchito mapulasitiki kumathandizanso kuti zinthu zizikhazikika mwa kulola kugwiritsa ntchito bwino zinthu.

Plasticizers ndi superplasticizers ndi zida zofunikira muukadaulo wamakono wa konkriti. Ngakhale amagawana cholinga chimodzi chochepetsera madzi mu konkire yosakaniza, amasiyana kwambiri pakuchita bwino, kuchuluka kwa ntchito, mtengo, ndi zotsatira za ntchito.

Plasticizersndizoyeneranso kumanga m'njira zina pomwe kuchepetsa madzi pang'ono ndikokwanira.Superplasticizers, kumbali ina, ndi yabwino kwa mapulogalamu apamwamba omwe amafunikira mphamvu zapamwamba, kuyenda, ndi kulimba.

Kusankha choyenerakuphatikizazimadalira zofuna za polojekiti, momwe chilengedwe chimakhalira, ndi zovuta za bajeti. Ndi kusankha koyenera ndi kugwiritsa ntchito, mitundu yonse iwiri imatha kupititsa patsogolo bwino komanso magwiridwe antchito a konkriti.