Superplasticizer yeHigh Strength Concrete: Rega Kufembera, Tanga Kupwanya PSI

93% yeInjiniya Dose Superplasticizers Zvakaipa. Heino Humbowo.

A 2023 kudzidza kubva kuYunivhesiti yeTexas kuteverwa 120 gadzirira-kusanganisa miti. Chete 7% zvesimba guru kongiri misanganiswa yakawana simba rakanangwa mukati mekutanga batch. Muparadzi? Misappliated superplasticizers kune yakakwirira simba kongiri musanganiswa. Vazhinji vashandisi vanovabata semuto munyu. Iko kukanganisa kwemamiriyoni emadhora. Unenge uri kudira mari muvhu. Nguva yekuzvigadzirisa.

Chii Chaizvo Chiri Superplasticizer yeYakakwira Simba Concrete Misanganiswa?

Iro repamusoro-soro mvura reducer. Period. Chinangwa chako chiyero chemvura-simende pazasi 0.35. Pasina izvozvo, musanganiswa wako wakaoma, chidhinha chisingashandiswi. Iyo superplasticizer inopfeka simende zvimedu. Inotsemura masumbu. Inokuita kuti udire a 60+ MPa musanganiswa unoyerera sedhaka rinozvikwidza. Hapana superplasticizer, hapana yakakwirira simba kongiri. Full stop.

Polycarboxylate Ethers (PCE) vs. Naphthalene sulfonate (NSF): The Brawl

PCE ndiye mambo. Inosunga mamorekuru sedandemutande repolymer. Inokupa 40% kuderedza mvura. Inobata slump ye 90 maminitsi. NSF ndiyo yekare-chikoro brawler. Inoshanda. Yakachipa. Asi inorasikirwa nekudonha nekukurumidza. Nokuda kwekusanganiswa kwemasimba makuru (pamusoro 60 MPa), kushandisa PCE. Kune simba rakaderera kana guru rinodira apo mutengo unotonga, NSF inoshanda. Asi usatarisire mashura kubva kuNSF kumusoro 80 MPa. Reddit vashandisi pa r/Concrete shuma PCE chete yemabhiriji decks. Vakarurama.

Yakawanda sei Superplasticizer Unoda chaizvo?

The classic range is 0.5% ku 2% nekurema kwesamende. Tanga pa 0.8% zvePCE. Push to 1.5% for maximum mvura kuderedza. Kuwedzeresa musungo. Enda mberi 2%, uye unowana:

• Kusarurana. Aggregates anonyura. Namira zvinoyangarara. Kuputsika kwesimba.
• Kunonoka zvakanyanya. Kongiri yako inogara yakapfava 24 maawa. Yakarasika nguva.
• Air content kurasikirwa. Unouraya kudzivirira kwechando.

Mumwe mushandisi weReddit pa r/AskEngineers akatsanangura basa kwavakapeta dosi kuti vagadzirise kudonha.. The core tested at 45 MPa pachinzvimbo ye 70 MPa. Kurasikirwa zvachose. Usave iye mainjiniya. Shandisa tafura yekuyerera, kwete meso ako.

Chikonzero nei Superplasticizer Yako Inotadza muKupisa Kwemamiriro ekunze

Temperature ndiyo inouraya chinyararire. Pa 35°C, PCE slump life inodonha kusvika 30 maminitsi. NSF yakatoipa. Iyo kemikari yekuita inokurumidza. Iwe unowedzera imwe mvura kuti uite remix. Unopera simba. Kugadzirisa: shandisa plasticizer panzvimbo yebasa, kwete chirimwa. Kana shandisa superplasticizer inononoka. Vazhinji vashandisi paReddit vanokurudzira kuwedzera ice kune yakasanganiswa mvura. Izvozvo zvinoshanda. Zvinoda mari. Asi zvinokunda kurambwa kwemutoro.

Kugarisana Nightmares: Cement uye Misanganiswa

Haasi ese masimende anotamba zvakanaka. C3A zvirimo ndidhiyabhorosi. High C3A (pamusoro 8%) inoita zvechisimba neNSF. Iwe unowana flash set, kana kuti hapana kuderera kwekuchengetedza zvachose. PCE inobata zviri nani, asi kwete zvakakwana. Unofanira kuedza. Shandisa iyo Marsh cone kana mini-slump bvunzo. Kana ukashandisa air-entraining agents nePCE, iwe unoisa pangozi yakakwirira yemhepo. Plasticizer inoteya mweya. Iwe unofanirwa kushandisa defoamer. Vazhinji makondirakiti vanodarika izvi. Ipapo vanoshamisika kuti sei simba rakaderera. Usaridarike.

Iyo Superplasticizer Inoderedza Shrinkage uye Creep?

Zvisina kunanga, Ehe. Mvura yakaderera inoreva zvishoma capillary pores. Zvishoma pores zvinoreva kushoma shrinkage. Musanganiswa weplasticized ne w/c 0.30 rinenge hafu yekuomeswa shrinkage ye w/c 0.50 mix. Asi usatarisira kuti plasticizer pachayo ichadzikisa-uchapupu kongiri. Kuderedzwa kunobva kumvura yakadzika. Ndiyo pfungwa yese: shandisa plasticizer kuderedza mvura, kwete kungoita kuti zviyerere. Kana uri kuwedzera plasticizer kungodira nyore, uri kutambisa.

Maitiro ekuwedzera Superplasticizer: Kutevedzana Kunokosha

Zvakaipa: Irasire pane yakaoma simende. Rudyi: Wedzera iyo nemvura inosanganiswa, kana mushure mekunge simende yanyorova. Kana ukawedzera kunonoka, haiparadzi. Unowana zvikwambo. Unorasikirwa 15% zvekubudirira. Nzira yakanakisisa: wedzera 80% yemvura, wedzera superplasticizer, wobva wawedzera mvura yasara wounganidza. Izvi zvinopa yunifomu kupararira. Vazhinji batch plant vanoshanda vanongozvikanda pamusoro pezviunganidzwa. Izvozvo hazvina musoro. Gadzirisa yako batching sequence.

Reddit vs. The Lab: Zvinonyatsotaurwa neVashandisi

PaReddit's r/Concrete, mumwe mushandisi akashuma: 'Yakashandiswa PCE kune a 90 MPa column. Hit slump. Simba rakarova 95 MPa uye 28 mazuva. Asi takatadza kudzora zviri mukati memhepo. Yakapera pa 7% mhepo. Taifanira kugadzirisa zvakare musanganiswa.’ Chidzidzo: PCE ine simba, asi hakusi kukanganwira. Chengetedza kupinda kwemhepo nguva dzose. Mumwe mushandisi pa r/StructuralEngineering akadaro: 'NSF inoshanda zvakanaka 50 MPA slabs. Sei uchibhadhara 3x yePCE?’ Izvozvo zvinoshanda kune simba rakaderera. Asi nokuda kwesimba guru, NSF ine ngozi. Bata kuPCE.

Nhema Dzehupfumi: Superplasticizers Chengetedza Simende? Kwete Nguva dzose.

Ehe, unogona kuderedza simende 10-15% uchichengeta simba. Izvo zvinoderedza CO2. Asi iyo superplasticizer pachayo inodhura 2-3x yakawanda pa cubic mita pane simende yaunochengeta. Saka kana iwe uchinetseka nemutengo wekutanga, unogona kusachengeta mari. Mari chaiyo inobva pakusimba. A 60 MPa musanganiswa nekuderera kupera kunogara 100 makore. A 30 MPa musanganiswa unogara 40 makore. Ndiko kuchengetwa chaiko. Varidzi vemberi vanowana izvi. Vafungi venguva pfupi vanonyunyuta nezve mutengo we superplasticizer.

Kupomba: Ko Yako Superplasticized Mix Pump?

High simba mixes inonamira. Vane high paste content. Vanopomba zvakanaka kana plasticizer ichikupa kuyerera pasina kupatsanura. PCE inoshanda zvirinani pakupomba. NSF inogona kukonzera 'kunamira’ iyo inovhara mutsetse. Kana uri kupomba 60+ mamita akatwasuka, shandisa chete PCE yakavakirwa superplasticizers. Wedzera viscosity modifying agent (VMA) kana musanganiswa uri pamuganhu. Mumwe kontrakta paReddit akadaro: ‘Taifanira kupomba 80 nyaya. Pasina VMA, musanganiswa wakabuda ropa. Yakawedzera VMA. Dambudziko ragadziriswa.’

Mutongo wedu: Iyo Superplasticizer Inokunda?

Nokuda kwesimba rakakwirira kongiri inosanganiswa pamusoro 60 MPa: Shandisa Polycarboxylate Ether (PCE). Gamuchira mutengo wepamusoro. Ndiyo chete nzira yekuvimbisa simba uye kushanda. Zvemisanganiswa under 50 MPa, NSF yakanaka. Chengetedza mari.

Rega kufungidzira. Tenga PCE superplasticizer yakagadzirirwa simba repamusoro. Zviedze pabatch duku. Edza kuderera, mhepo, uye simba. Kana zvichikuitira, odha muhuwandu.

Tinokurudzira UltraFlow PCE-8000. Inopa 40% kuderedza mvura ne 2-hour slump retention. Yakagadzirirwa kusanganiswa kwemasimba makuru. Zviuru zvevashandi vanoishandisa. Usave mukomana akarasikirwa nekudirwa nekuda kweChevron-Philipped NSF. Chinja manje.

Supplier
ConcreteAndMore mutengesi akavimbika wepasirese wepamusoro-inoshanda kongiri admixtures uye makemikari ekuvaka.. Nemakore ehunyanzvi hweindasitiri, isu tine hunyanzvi mukupa zvigadziriso zvehunyanzvi zvinosanganisira polycarboxylate superplasticizers, kongiri fibers, defoamers, zvinopupa furo, uye advanced airgel thermal insulation products. Kana iwe uchifarira kongiri admixture, ndapota inzwa wakasununguka kutibata nesu!