Kusiyana pakati pePlasticizer uyeSuperplasticizer

Concretendicho chivakwa chekuvaka chinoshandiswa zvakanyanya pasi rose nekuda kwekugara kwacho, simba, uye kuita zvakasiyana. Nekudaro, kuita kwayo kunoenderana zvakanyanya nekusanganiswa dhizaini uye kushandiswa kwemakemikari admixtures. Pakati pezvisanganiswa izvi,plasticizersuyesuperplasticizerskutamba mabasa akakosha mukusimudzira kushanda nesimba kwekongiri. Kunyange zvazvo zvingaratidzika zvakafanana mukushanda, zvinosiyana zvakanyanya mumakemikari avo, maitiro ekuita, uye mashandisirwo. Nhungamiro inoongororamisiyano mikuru pakati peplasticizers uye superplasticizers, marudzi azvo, betsero, ganhuriro, uye kushandiswa kwakafanira.

Nhanganyaya kune Admixtures muConcrete

Concrete admixtureszvinhu zvinowedzerwa kumusanganiswa wekongiri pamberi kana panguva yekusanganiswa kugadzirisa zvimiro zvayo. Izvi zvinosanganisira kukurumidza kana kumisa nguva yekumisa, kuvandudza kushanda, kuderedza kudiwa kwemvura, kuwedzera simba, kana kuwedzera kusimba. Plasticizers uye superplasticizers mvura-inoderedza admixtures yakagadzirirwa kuderedza huwandu hwemvura hunodiwa kuti uwane humwe hutano hwekushanda.

Chii chinonzi Plasticizer?

Tsanangudzo

A plasticizer, inozivikanwawo seyakajairwa mvura inoderedza, ikemikari yakasanganiswa inobvumira kudzikiswa kwehuwandu hwemvura (neanenge 5-15%) mumusanganiswa wekongiri pasina kukanganisa kushanda kwayo.

Kuumbwa Kwemakemikari

Plasticizers anowanzo kuumbwa ne:

• Lignosulfonates
• Hydroxylated carboxylic acids
• Yakagadziriswa lignosulfonates

Nzira Yekuita

Plasticizers anoshanda nekuparadzira zvimedu zvesimende mumusanganiswa, izvo zvinoderedza kupokana pakati pavo. Izvi zvinobvumira kufamba zviri nani kwekrete nemvura shoma.

Benefits

• Inovandudza kushanda
• Inowedzera simba rekutanga uye rekupedzisira
• Inoderedza mvura-simende ratio
• Inowedzera kupera kwepamusoro

Common Use

• General kuvaka zvikumbiro
• Yakagadzirira-kusanganisa kongiri
• Kongiri yepakati-simba (20–40 MPa)

Chii chinonzi Superplasticizer?

Tsanangudzo

A superplasticizer, kana kuti yakakwirira-siyanamvura inoderedza(HRWR), ikemikari yakasanganiswa inodzikisa zviri mukati memvura ne12-30% uku ichiwedzera zvakanyanya kuyerera kwemusanganiswa.

Kuumbwa Kwemakemikari

Superplasticizers inogadzirwa kubva:

• Sulfonated naphthalene formaldehyde (SNF)
• Sulfonated melamine formaldehyde (SMF)
• Polycarboxylate ethers (PCEs)
• Acrylic polymers

Nzira Yekuita

SuperplasticizersPCE inopa kupararira kwakasimba kwesimende zvimedu, zvichibvumira kuti iwedzere kushanda uye kuyerera. Izvi zvinogonesa kugadzirwa kwekongiri inoshanda zvakanyanya pane yakaderera mvura-simende ratios.

Benefits

• Inobvumira kuzvibatanidza kongiri
• Zvinonyanya kuvandudza kushanda
• Inowana yakakwirira yekutanga uye yekupedzisira simba
• Inosimudzira kupera kwepamusoro uye kusimba

Common Use

• High-performance kongiri (HPC)
• Kongiri yakakwirira-yakasimba (> 60 MPa)
• Precast uye prestressed zvinhu
• Architectural kongiri

Misiyano Yakakosha Pakati PePlasticizers uye Superplasticizers

Kuenzanisa Kwakadzika: Plasticizer vs. Superplasticizer

1. Mvura Kuderedza Kubudirira

Plasticizers anogona chete kuderedza chikamu chidiki chemvura, nepo superplasticizers inogadzirwa kuderedza mvura zvakanyanya, ichigonesa yakaderera mvura-simende ratios yakanakira yakakwirira-simba kana inoyerera musanganiswa.

2. Effect on Workability

Superplasticizers inogadzira kongiri inoyerera yakanakira self-compacting kongiri (SCC), ukuwo mapurasitiki ane mwero anovandudza kudonha.

3. Kuvandudza Simba

Nekuti ivo vanobvumira kudzika kwemvura-simende ratios, superplasticizers inobatsira zvakanyanya kune yakakwira simba kuwana kana ichienzaniswa nemapurasitiki.

4. Kuenderana nemamwe maAdmixtures

Zvese zviri zviviri maplasticizers uye superplasticizers anogona kushandiswa nezvimwe zvinosanganiswa (semuenzaniso, retarders, accelerators), asi kuyedzwa kwakaringana kunodiwa kudzivirira kuita kwakashata.

5. Kubudirira Kwemari

Kunyangwe superplasticizers ichidhura zvakanyanya, inogona kudzikisa iyo yakazara simende yemukati inodiwa, ichipa mabhenefiti emutengo wenguva refu yemapurojekiti makuru kana epamusoro.

Mhando dze Superplasticizersuye Plasticizers

Common Plasticizers

• Calcium lignosulfonate
• Hydroxycarboxylic acids
• Mashuga akachinjwa

Common Superplasticizers

• SNF (Sulfonated Naphthalene Formaldehyde): Inoshandiswa mu precast uye yakakwirira-kuyerera application.
• SMF (Sulfonated Melamine Formaldehyde): Kurumidza kuseta, yakanakira precast zvikamu.
• Polycarboxylate Ethers (PCEs): Yakakwirira-inoshanda admixtures yeUltra-high performance uye SCC.

Zvakanakira uye Zvakaipa

Plasticizers

Zvakanakira:

• Mutengo-unobudirira wekushandiswa kwese
• Inovandudza kushanda
• Inowedzera kupera

Zvakaipa:

• Kuderedza mvura shoma
• Inogona kudzoreredza kuseta zvishoma

Superplasticizers

Zvakanakira:

• Kushanda kwepamusoro uye kuchengetedza kwekudonha
• Inogonesa kongiri yekushanda kwepamusoro
• Kuvandudzwa kwesimba uye kusimba

Zvakaipa:

• Zvimwe zvinodhura
• Sensitive to dosage kusiyana
• Dzimwe mhando dzinogona kuderedza kuseta nguva zvakanyanya

Mafungiro Anoshanda muKusarudza Yakakodzera Admixture

Zvinhu Zvokufunga nezvazvo:

• Mhando yeprojekiti: General kuvaka vs. yakakwirira-kuita
• Kudonha kunodiwa: Yakaderera kusvika pakati nepakati vs. yakakwirira kwazvo
• Zvinangwa zvesimba: Standard vs. high-simba kongiri
• Kurapa mamiriro: Kupisa kana kutonhora
• Formwork yakaoma: Zviumbwa zviri nyore kana zvakaoma kunzwisisa

Muenzaniso Mamiriro:

• Plasticizer kushandiswa: Kudurura masirabhu eimba yekugara.
• Superplasticizer kushandiswa: Kupomba kongiri kumusoro kwechivako chine nhurikidzwa makumi mashanu.

Zvakatipoteredza uye Sustainable Aspects

Superplasticizers, kunyanya maPCE, anogonesa kushandiswa kwemvura yakaderera uye simende zvemukati, izvo zvinoderedza kabhoni tsoka yekongiri. Izvi zvinovaita chikamu chakakosha mumaitiro ekuvaka akasimba.

Kushandisa plasticizers kunopawo kusimudzira nekubvumira kushandiswa kwakanyanya kwezvinhu.

Plasticizers uye superplasticizers akakosha maturusi mune yemazuva ano kongiri tekinoroji. Nepo ivo vachigovana chinangwa chakajairwa chekudzikisa mvura mumusanganiswa wekongiri, ivo vanosiyana zvakanyanya mukuita, chiyero chekushandisa, mutengo, uye kukanganisa pakuita.

Plasticizersakanyatsokodzera kuvakwa kwechinangwa-zhinji uko kudzikiswa kwemvura kuri pakati nepakati kwakakwana.Superplasticizers, kune rumwe rutivi, yakanakira zvikumbiro zvepamusoro zvinoda simba repamusoro, kuyerera, uye kusimba.

Kusarudza zvakanakamusanganiswazvinoenderana nezvinodiwa zveprojekiti, mamiriro ezvakatipoteredza, uye zvipingamupinyi zvebhajeti. Nekusarudzwa kwakakodzera uye kushandiswa, marudzi ese ari maviri anogona kuwedzera zvakanyanya kunaka uye kuita kwekongiri.