Post Date:19,Sep,2022
Retarder musanganiswa unogona kutadzisa kuyerera kwe simenti uye kurebesa nguva yekuchinja yemusanganiswa kubva kupurasitiki kuenda kune yakaoma nyika.Naizvozvo, inogona kushandiswa mune yekutengeserana kongiri kuvandudza slump kuchengetwa kwekongiri.Izvo zvakakosha kune yekutengeserana kongiri.the admixture ingredients.
Muchokwadi, basa revanodzoreredza rakanyanya kupfuura kuvandudza mapurasitiki ekongiri yekutengesa.
1Ongororo dzakaratidza kuti kudzikisa mvura kweiyo inowanzo shandiswa sodium gluconate kanoverengeka iyo inowanzoshandiswa naphthalene-based superplasticizers.kuzivikanwa.Munguva yekuvaka tembiricha yakakwira, wedzera dosage ye sodium gluconate, mutengo wekuvaka hauzo wedzera, nekuti dosage yeinopindirana yekudzikisa mvura mumiririri inogona kuderedzwa zvakanyanya.
Muchokwadi, basa revanodzoreredza rakanyanya kupfuura kuvandudza mapurasitiki ekongiri yekutengesa.
1Ongororo dzakaratidza kuti kudzikisa mvura kweiyo inowanzo shandiswa sodium gluconate kanoverengeka iyo inowanzoshandiswa naphthalene-based superplasticizers.kuzivikanwa.Munguva yekuvaka tembiricha yakakwira, wedzera dosage ye sodium gluconate, mutengo wekuvaka hauzo wedzera, nekuti dosage yeinopindirana yekudzikisa mvura mumiririri inogona kuderedzwa zvakanyanya.
Kunyanya kushandisa retarder mukutengesa kongiri kuvaka hazvikurudzirwe.Kunyanya kushandisa retarder mukongiri hakuzongokanganisa kuvandudzwa kwesimba rekutanga kwekongiri, asi zvakare kukanganisa kufambira mberi kwekuvaka.Pamusana pekugara kwenguva refu kwepurasitiki yekrete, ichasangana nemhepo uye zuva mumhepo, uye mvura iri pamusoro pekrete ichakanganiswa.Kuwanda kwemvura kunowedzera kurasikirwa kwemvura pamusoro pekrete, zvichiita kuti pave ne micro-cracks.Sezvo kurasikirwa kwemvura kunowedzera, kuputika kunokura kusvika pakadzika, chiyero chemvura chemvura mukrete pores inodonha, kudzvinyirira kwakashata kunogadzirwa zvishoma nezvishoma kunowedzera, uye kunokonzera shrinkage Simba rinoita kuti konkrete iwedzere nekuda kwekurasikirwa kwemvura.
Concrete mune yepurasitiki mamiriro kwenguva yakareba ichakonzera kubuda kweropa uye kusaenzana deformation pakati peaggregates uye cementitious zvinhu.Maererano nemiedzo, shrinkage yepurasitiki yekongiri munzvimbo yepurasitiki kwenguva yakareba inogona kusvika 1%, iyo ine simba guru pahutano hwekrete.
Nguva yekutumira: Sep-19-2022