Chengetedzo yeKushandiswa kweSuperplasticizer muCoagulation

Superplasticizer, sechizvarwa chitsva chekongiri admixtures, ine zvakawanda zvakatanhamara zvakanakira senge low admixture, chiyero chekudzikisa mvura yakakwirira, uye kudzivirirwa kwakanaka kwekudonha, iyo inopa kongiri neakanakisa conductivity uye kusimba. Kushandiswa kwe polycarboxylate superplasticizer.

1 Kugadziriswa kwe superplasticizer kune cementitious zvinhu

Cement mineral composition inonyanya kuoma, pamwe chete nekushandiswa kwemusanganiswa kunonyanya kusagadzikana kwekuita kwenhunzi ash, superplasticizer ine simenti uye admixture adaptability matambudziko achiripo, rudzi urwu rwedambudziko rinonyanya kuratidzwa mune superplasticizer vane mutsauko pane saturation poindi yesimende yakasiyana, kuderedza chiyero chekudzikisa mvura, kurasikirwa kwekongiri inodonha, kongiri “tofu” chiitiko mukushaya pulp, exudation, subsidence segregation, kupomba, sensitive to dosage haigoni kuvhura kana kusunungurwa zvakanyanya kweconcrete problems.The reason is complicated. Kutsva uye kunaka kwe simenti, mhando, uye zvirimo zvemusanganiswa mu simenti, chikamu chezvicherwa zvakati wandei, kunyanya tricalcium aluminate, rudzi uye zvirimo zvegypsum, iyo kabhoni yemukati yemadota enhunzi uye kudiwa kwemvura zvese zvinokanganisa kuchinjika kweiyo inoderedza mvura mumiriri kune simende zvinhu..

2.Sensitivity ye superplasticizer kune madhaka emukati

Concrete jecha silt yemukati mune mbishi zvinhu pakuita kwekongiri inogona kukonzera isingadzoreki pesvedzero, inoderedza kuita kwe superplasticizer, midzi inokonzeresa yakawanda superplasticizers yaive ivhu adsorption mushure mechikamu chakashandiswa kuparadzira simende zvimedu zvinodzikira., kupararira, kana jecha rine silt rakakwirira, pachave nekudzikisa mvura mwero we superplasticizer yaive pachena yakaderedzwa, iyo kongiri yekudonha kurasikirwa inowedzera, kushomeka kwemari, nyore kutsemuka, kongiri simba madonhwe anova murombo durability dambudziko, mukuona kwezvinetso zvesilt content, kune akati wandei marudzi echinyakare mhinduro:(1) wedzera zviri mukati memusanganiswa kana chikamu cheanononoka-kuburitsa slump kudzivirira mumiririri, asi chengetedza huwandu hwekudzivirira kongiri kubva kune yero, kubuda ropa, rusarura, kubata pasi uye kongiri kunonoka nguva yakarebesa;(2) gadzirisa jecha rejecha kana kuwedzera mhepo yekutora dose, kuderedza chiyero chejecha kana kuwedzera kupinza kwemhepo kuti uwedzere mvura yemahara uye slurry vhoriyamu yekongiri system pachinzvimbo chekushanda kuri nani uye simba., kuitira kugadzirisa kushanda kwekrete;(3) kuwedzera kwakakodzera kana shanduko yezvikamu zvayo kugadzirisa dambudziko. Kuedza kwakaratidza kuti kuwedzera huwandu hwakakodzera hwe sodium metabisulfite, sodium thiosulfate, sodium dexamethasone, uye sodium sulfate mumvura-inoderedza agent inogona kuderedza kushandiswa kwedhaka remukati pakrete kune imwe nhanho.Chokwadi, nzira dzataurwa pamusoro apa hadzigoni kugadzirisa matambudziko ose ezvinyorwa zvematope, uye pesvedzero yezvinyorwa zvematope pakusimba kwekongiri inoda kuramba ichidzidzwa. Saka, nzira yakakosha ndeyekudzikisa madhaka ezvinyorwa.

3 Kubatanidza superplasticizer nezvimwe zvinhu

Parizvino, sainzi uye zvine musoro kusanganiswa kwe superplasticizer nezvinhu zvakakodzera ndiyo chiyero chikuru chekuvandudza zvimiro zve superplasticizer muChina.Zvisinei., superplasticizer ine sarudzo yakasimba kana yakasanganiswa nezvimwe zvikamu, saka hazvina kukodzera kusanganiswa ne-a-series-reducing agent, sulfamic acid inoderedza mvura, kana kuti mi-ammonia inoderedza mvura. Yakasanganiswa neselulosi yeviscosity yakasiyana ichava nemvura inotakura flocculent uye kunaya kwemvura., izvo zvichakanganisa mvura-inobata mhedzisiro yemvura inodzikisa agent uye chaiyo kugadzirwa;Musanganiswa ne retarder dzimwe nguva zvakare vane kunhuhwirira kwakasiyana uye kuyerera;Nemamwe inorganic munyu admixture kugarisana ariwo zvakazara, senge yekutanga simba mumiriri, antifreeze, murombo solubility, zvakaoma kusanganisa, mukuita kusanganisa kuchaita mafuta anoyangarara pamusoro.Nekuda kweizvi, Zvinokurudzirwa kuti kana superplasticizer inoshandiswa kusanganisa nezvimwe zvinhu, zvakakosha kuti usimbise mhedzisiro yekubatanidza uye kukonzeresa kwekongiri kuburikidza nemiedzo usati waona kana superplasticizer inogona kusanganiswa nezvimwe zvikamu.Uyezve inofanirwa kutarisisa basa rakasarudzika rekuita kweanoderedza mvura., doro raamai rinofanira kutamba synergy yezvinowedzera zvakasiyana-siyana, zvakawanda kuwedzera kuwanda kwedoro raamai, yakagadzirwa nekushandisa zvakasiyana siyana zvekushandisa, kugadzirwa nezvikamu zvakasiyana, mutsauko wekuita, gadzira nhevedzano yeakawanda-function zvigadzirwa, kuburikidza nebasa rakasiyana rekugovera doro raamai kuti riwane zvibereko zvakanaka.

4 senitivity yedosi uye kushandiswa kwemvura kwe superplasticizer

Nekuda kwe superplasticizer inonyanya kunzwisiswa neshanduko yezvigadzirwa, pamwe chete nemvura inoderedza mumiririri ine mvura yakakwira yekudzikisa mwero, yakaderera gelling zvinhu uye yakaderera kushandiswa kwemvura zvinhu zvakaita sekushandiswa kwemusanganiswa kuenzanirana kwekongiri saturation poindi yemvura yekudzikisa mumiririri uye USES yakakosha. “kutsoropodza”, kamwe zvakanyanyisa, inogona kuoneka kongiri kupatsanurwa uye kubuda ropa, run pulp, kuoma uye kuwandisa kwemhepo yemukati pane yakashata chiitiko, pane rimwe divi, kongiri ichaoma, sekutadza kushanda zvakanaka, kudonha kurasikirwa dambudziko rakakura, saka Mazano edambudziko iri: (1) inofanirwa kudzoka kuzochinja mushure mekuyedzwa nemidziyo yekugadzirisa dosage kuti iwane yakanakisa mhedzisiro;(2) zviri mukati mepolycarboxylic acid superplasticizer uye kushandiswa kwemvura kwekongiri kunofanirwa kunyatsodzorwa mukuita kwekushandisa.;(3) nokuda kwezvinhu zvakasvibirira muyedzo yekrete yemvura inoderedza mumiririri, edza kugadzirisa mvura inoderedza mumiririri kuti “slow” type, kuitira kuti uwane chinangwa chekusave nehanya kune zvigadzirwa uye kushandiswa kwemvura.

Mhedziso

Superplasticizer chizvarwa chitsva chekongiri yekudzikisa mvura mumiriri ine zvakatanhamara zvakanakira, asi mukushandiswa kwemaitiro akaburitsawo matambudziko mazhinji, kutariswa kwakawanda kwakabhadharwa kune dambudziko iri kusvika parizvino kwave kushandirwa vashandi uye nyaya yekutsvagisa, munyori anotarisira zviwanikwa zvekongiri muhuwandu hwekushanduka-shanduka kuitira kuti uwane chinangwa chekugadzikana., mazano pamatambudziko akafanana panguva imwe chete, inofanira kunyatsoongorora, system test, dhipatimendi repolycarboxylate superplasticizer kushandisa dambudziko rinogona kugadziriswa.

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