Zuva Rokutumira:13, Chivabvu,2024

Sezvo tembiricha iri kuramba ichikwira, chitubu chiri kuuya, uye zvinotevera kukanganisa kwekuchinja kwekusiyana kwetembiricha pakudonha kwekongiri. Panyaya iyi, tichaita zvigadziriso zvinoenderana pakushandisa mvura kuderedza vamiririri kuitira The kongiri inosvika inodiwa mamiriro.

1. Polycarboxylate-mvura-inoderedza vashandi vachiri nezvinetso nekugadzirisa kwavo kune simenti. Kune masimende ega ega, chiyero chekudzikisa mvura chichava chakaderera uye kurasikirwa kwekudonha kuchava kukuru. Nokudaro, kana kugadziriswa kwe simenti kusina kunaka, musanganiswa wekuedza uye kugadziriswa kwekrete kunofanira kuitwa. dosage kuti uwane mhedzisiro yakanaka.

Mukuwedzera, iyo yakatsetseka uye nguva yekuchengetedza simende ichakanganisawo kushanda kwepolycarboxylate superplasticizer. Kushandiswa kwesimende inopisa kunofanira kudziviswa mukugadzirwa. Kana simiti inopisa yakasanganiswa ne polycarboxylate-inoderedza mvura, iyo yekutanga kudonha kwekrete ichava nyore kubuda, asi iyo slump-kuchengetedza mhedzisiro yeadmixture ichave isina simba, uye kongiri inogona kuoneka. Kukurumidza kurasikirwa kwekudonha.

2. Polycarboxylate mvura-inoderedza vashandi vanonyanya kukoshesa kuchinja kwezvinhu zvakasvibirira. Kana mhando yezvigadzirwa zvakaita sejecha nematombo uye zvakasanganiswa zvakaita sedota renhunzi uye mineral powder zvachinja zvakanyanya, iyo polycarboxylate inoderedza mvura inosanganiswa ne polycarboxylate inoderedza mvura. Kuita kwekongiri kunozokanganisika kune imwe nhanho, uye muyedzo wemusanganiswa wekuyedzwa unofanirwa kuitwa zvakare neyakachinjika zvigadzirwa zvekugadzirisa dosage kuti iwane yakanakisa mhedzisiro.

3. Iyo polycarboxylate-inoderedza mvura inoshandiswa inonyanya kunzwisiswa nematope ehuwandu. Yakawandisa madhaka emukati anozodzikisa kuita kwepolycarboxylate yekudzikisa mvura mumiririri. Naizvozvo, kunaka kweaggregates kunofanirwa kudzorwa zvakanyanya kana uchishandisa polycarboxylate superplasticizers. Kana madhaka emukati akawedzera, chiyero chepolycarboxylate chinoderedza mvura chinofanirwa kuwedzerwa.

4. Pamusana pemvura yakakwirira-yekuderedza mvura yepolycarboxylate-inoderedza mvura, kudonha kwekrete kunonyanya kukoshesa kushandiswa kwemvura. Nokudaro, kushandiswa kwemvura kwekongiri kunofanira kunyatsodzorwa panguva yekushandiswa. Kana huwandu hwapfuura, kongiri ichaonekwa kupatsanurwa, kubuda ropa, kuoma uye kuwandisa kwemhepo yemukati uye zvimwe zvakashata zviitiko.

5. Paunenge uchishandisa polycarboxylate mvura-inoderedza admixtures, zvinokurudzirwa kuwedzera zvakakodzera nguva yekusanganiswa (kazhinji kaviri kureba seyakagadziriswa admixtures) panguva yekugadzirwa kwekongiri, kuitira kuti steric chipingamupinyi kukwanisa kwepolycarboxylate mvura-kuderedza admixture inogona kuva. zviri nyore kushandisa, izvo zviri nyore Kudzora kwekongiri kudonha mukugadzira. Kana nguva yekusanganiswa isina kukwana, zvinowanzoitika kuti kudonha kwekongiri yakaunzwa kunzvimbo yekuvaka ichave yakakura kudarika kudonha kwekongiri inodzorwa pachiteshi chekusanganisa.

6. Nekuuya kwechirimo, kusiyana kwekushisa pakati pemasikati neusiku kunoshanduka zvikuru. Mukutonga kwekugadzira, isu tinofanirwa kugara tichiteerera kune shanduko yekongiri inodonha uye gadzirisa kuyerwa kweiyo admixtures panguva yakakodzera (wana iyo musimboti wepasi kusanganisa pane yakaderera tembiricha uye yakakwirira kusanganisa pakupisa kwakanyanya).