Zuva Rokutumira:30,Nov,2022

A. Mvura inoderedza mumiririri

Imwe yemashandisirwo akakosha emvura yekudzikisa mumiririri ndeyekudzikisa kushandiswa kwemvura kwekongiri uye kuvandudza kuyerera kwekongiri pasi pemamiriro ekuchengetedza reshiyo yebhainda remvura isina kuchinjika, kuitira kuti isangane nezvinodiwa zvekutakura kongiri uye kuvaka. Yakawanda yekudzikisa mvura yakasanganiswa ine saturated dosage. Kana iyo saturated dosage yakapfuudzwa, chiyero chekudzikisa mvura hachizowedzera, uye kubuda ropa nekuparadzaniswa kuchaitika. Iyo saturated dosage inoenderana nezvose zviri zviviri kongiri mbishi zvinhu uye kongiri musanganiswa chikamu.

 

1. Naphthalene superplasticizer

Naphthalene superplasticizerinogona kugoverwa muzvigadzirwa zvepamusoro (Na2SO4 content <3%), zvigadzirwa zvepakati (Na2SO4 zvinyorwa 3% ~ 10%) uye zvigadzirwa zvakaderera (Na2SO4 content> 10%) maererano neNa2SO4. Nhamba yepimo ye naphthalene series water reducer: poda ndeye 0.5 ~ 1.0% ye simenti yakawanda; Izvo zvakasimba zvemugadziriso zvinowanzoita 38% ~ 40%, mari yekusanganiswa i1.5% ~ 2.5% yehutano hwesimende, uye chiyero chekudzikisa mvura i18% ~ 25%. Naphthalene yakatevedzana mvura inodzikisira haina kubuda ropa, uye ine zvishoma zvinokanganisa panguva yekumisikidza. Inogona kusanganiswa ne sodium gluconate, shuga, hydroxycarboxylic acid uye munyu, citric acid uye inorganic retarder, uye nehuwandu hwakakodzera hwemhepo inopinza mumiriri, kurasikirwa kwekudonha kunogona kudzorwa zvinobudirira. Izvo zvakashata zveyakaderera concentration naphthalene yakatevedzana mvura inoderedza inyaya yekuti zvirimo sodium sulfate yakakura. Kana tembiricha yakadzikira kupfuura 15 ℃, sodium sulfate crystallization inoitika.

 

2. Polycarboxylic acid superplasticizer

Polycarboxylic acidmvura inodzikisira inoonekwa sechizvarwa chitsva chepamusoro-inoshanda yekudzikisa mvura, uye vanhu vanogara vachitarisira kuti ive yakachengeteka, inoshanda zvakanyanya uye inochinjika kupfuura yechinyakare naphthalene yakatevedzana mvura inoderedza mukushandisa. Mabhenefiti ekuita epolycarboxylic acid mhando yekudzikisa mvura agent anonyanya kuratidzwa mu: yakaderera dosage (0.15% ~ 0.25% (yakashandurwa solids), yakakwira yekudzikisa mvura (kazhinji 25% ~ 35%), yakanaka slump kuchengetedza, yakaderera shrinkage, imwe mweya. kudzidzisa, uye zvakaderera zvakanyanyisa zvealkali zvemukati.

Nekudaro, mukuita,polycarboxylic acidmvura inodzikisira ichasanganawo nemamwe matambudziko, akadai se: 1. Mvura inoderedza mhedzisiro inoenderana neyakagadzirwa uye musanganiswa chikamu chekongiri, uye inokanganiswa zvakanyanya nesaiti yejecha nematombo uye kunaka kwemamineral admixtures; 2. Kuderedza mvura uye kuderera kwekuchengetedza migumisiro kunobva zvakanyanya pamuyero wemvura inoderedza mumiririri, uye zvakaoma kuchengetedza slump neine dosage yakaderera; 3. Kushandiswa kwepamusoro-soro kana simba guru rekrete rine huwandu hwakawanda hwekusanganiswa, iyo inonzwisisa kushandiswa kwemvura, uye kushanduka kuduku kwekushandiswa kwemvura kunogona kukonzera kuchinja kukuru mukuderera; 4. Pane dambudziko rekugarisana nemamwe marudzi emvura yekudzikisa maajenti uye mamwe ma admixtures, kana kunyange pasina superposition effect; 5. Dzimwe nguva kongiri ine mvura yakakura yekubuda ropa, yakakomba kupinza mhepo, uye yakakura uye yakawanda mabhuru; 6. Dzimwe nguva tembiricha kuchinja kuchakanganisa mhedzisiro yepolycarboxylic acidmvura reducer.

Zvinhu zvinokanganisa kuenderana kwe simenti uyepolycarboxylic acidmvura inoderedza: 1. Chiyero cheC3A / C4AF uye C3S / C2S chinowedzera, kuwirirana kunoderera, C3A inowedzera, uye kushandiswa kwemvura kwekrete kunowedzera. Kana zviri mukati mayo zvakakura kupfuura 8%, kurasikirwa kwekongiri kunowedzera; 2. Yakakurisa kana kuti diki zvakanyanya alkali zvinyorwa zvinokanganisa kugarisana kwavo; 3. Hunhu husina kunaka hwesamende admixture huchakanganisawo kuenderana kwezviviri; 4. Mhando dzakasiyana dzegypsum; 5. High tembiricha simende inogona kukonzera kukurumidza kugadzirisa kana tembiricha kupfuura 80 ℃; 6. Fresh simende ine simba remagetsi pfuma uye simba rakasimba rekutora mvura inoderedza; 7. Nzvimbo chaiyo yesamende.