Waa maxay noocyada dib-u-dhigayaasha?

Dib-u-dejiyayaashu waa kiimiko lagu daro oo hoos u dhigaya goobta ama adkaynta sibidhka. Waxaa loo adeegsadaa codsiyada la taaban karo ee goobta dib u dhaca ah ee la jecel yahay, sida cimilada kulul, ama marka la kordhiyo isku darka ama waqtiyada meelaynta loo baahan yahay. Waxaa jira dhowr nooc oo dib-u-dhigayaal ah oo la heli karo, mid walbana wuxuu leeyahay astaamo u gaar ah iyo faa'iidooyinka. Waa kuwan qaar ka mid ah noocyada dib u dhigista:

1. Asiidhyada Dabiiciga ah: Asiidhyada dabiiciga ah sida citric, tartaric, iyo gluconic acid ayaa caadi ahaan loo isticmaalaa dib-u-dhigayaasha walxaha sibidhka ku salaysan. Waxay ku shaqeeyaan iyagoo ka falcelinaya lime bilaashka ah ee sibidhka, kaas oo hoos u dhigaya habka fuuq-celinta. Dib-u-dhigeyaasha aashitada dabiiciga ah guud ahaan waa kuwo aan sun ahayn iyo kuwo noole noolayn kara, taas oo ka dhigaysa doorasho deegaan ahaan u wanaagsan.
2. Sonkorta: Sonkorta sida gulukooska, sukrose, iyo fructose waxa kale oo loo isticmaali karaa dib-u-dhigis walxaha sibidhka ku salaysan. Waxay ku shaqeeyaan iyagoo ku xiraya dusha sare ee qaybaha sibidhka, taas oo hoos u dhigta habka fuuq-celinta. Dib-u-dhigeyaasha sonkorta waxaa badanaa loo isticmaalaa iyadoo lagu darayo dib-u-dhigeyaasha kale si loo bixiyo waqti dejin dheeraad ah.
3. Cusbada aan Orgaaniga ahayn: Cusbada aan noolaha lahayn sida borax, zinc sulfate, iyo sodium silicate ayaa caadi ahaan loo isticmaalaa dib-u-dhac ku yimaada walxaha sibidhka ku salaysan. Waxay ku shaqeeyaan iyagoo samaynaya filim khafiif ah oo ku yaal dusha sare ee qaybaha sibidhka, taas oo hoos u dhigta habka fuuq-celinta. Dib-u-dejiyayaasha milixda ee aan noolaha lahayn ayaa inta badan loo isticmaalaa iyadoo lagu darayo aashitada organic ama dib-u-dejiyayaal sokorta si ay u bixiyaan waqti joogto ah oo la saadaalin karo.
4. Lignosulfonates: Lignosulfonates waa polymers dabiici ah oo laga soo qaatay saxarka alwaax. Waxaa caadi ahaan loo isticmaalaa dib-u-dejiyayaal alaabta cement-ku-saleysan, maadaama ay ku shaqeeyaan iyagoo ku xiraya dusha qaybaha sibidhka oo hoos u dhigaya habka fuuq-celinta. Dib-u-dejiyayaasha Lignosulfonate waxay guud ahaan aad uga waxtar badan yihiin sibidhka aluminium-sare marka loo eego sibidhka Portland ee caadiga ah.
5. Asiidhyada Hydroxycarboxylic: Hydroxycarboxylic acids sida gluconic iyo citric acid ayaa caadi ahaan loo isticmaalaa dib-u-dejiyayaal alaabta sibidhka ku salaysan. Waxay ku shaqeeyaan inay khiyaameeyaan ions calcium ee bilaashka ah ee sibidhka, taas oo hoos u dhigta habka fuuq-celinta. Dib-u-dejiyayaal Hydroxycarboxylic acid ayaa inta badan loo isticmaalaa marka lagu daro dib-u-dejiyayaal kale si ay u bixiyaan waqti dejin oo joogto ah oo la saadaalin karo.
6. Polycarboxylate Ether (PCE) Superplasticizers: PCE superplasticizers waxaa caadi ahaan loo isticmaalaa dib-u-dejiyayaal codsiyada la taaban karo halkaas oo waqti dejinta daahitaanka la jecel yahay. Waxay ka shaqeeyaan inay kala firdhiyaan qaybaha sibidhka waxayna yareeyaan xiisadda dusha sare ee biyaha, taas oo hoos u dhigta habka fuuq-celinta. Dib-u-dejiyayaasha PCE-ga waxaa inta badan loo adeegsadaa iyadoo lagu daray kuwa kale ee superplasticizers si loo bixiyo waqti go'an oo joogto ah oo la saadaalin karo.

Gebogebadii, dib-u-dejiyayaashu waa qayb muhiim ah oo ka mid ah alaabta cement-ku-salaysan, maadaama ay bixiyaan waqti dejin badan oo la xakameynayo waxayna gacan ka geysan karaan hagaajinta shaqada maaddada. Nooca dib-u-dejinta la isticmaalo waxay ku xirnaan doontaa codsiga gaarka ah iyo wakhtiga la doonayo, iyo sidoo kale sifooyinka sibidhka iyo waxyaabaha kale ee la isticmaalo. Iyaga oo dooranaya nooca saxda ah ee dib u dhigista, qandaraaslayaasha iyo injineeradu waxay hubin karaan in alaabadooda sibidhka ku salaysan ay yihiin kuwo xoogan, waara, oo si fiican u shaqeeya waqti ka dib.