Idethi yokuthunyelwe:10,Apr,2023

(1) Ithonya kungxube kakhonkolo

I-ejenti yamandla yangaphambi kwesikhathi inganciphisa isikhathi sokusetha sikakhonkolo, kodwa uma okuqukethwe kwe-tricalcium aluminate kusimende kuphansi noma kungaphansi kunegypsum, i-sulfate izobambezela isikhathi sokusetha sikasimende. Ngokuvamile, okuqukethwe komoya kukhonkolo ngeke kukhushulwe nge-admixture yamandla angaphambi kwesikhathi, futhi okuqukethwe komoya kwe-admixture yokunciphisa amanzi ekuqaleni kwamandla kunqunywa okuqukethwe komoya kwe-admixture yokunciphisa amanzi. Isibonelo, okuqukethwe kwegesi ngeke kwande uma kuhlanganiswe nesinciphisi samanzi soshukela we-calcium, kodwa kuzokwanda kakhulu uma kuhlanganiswe nesinciphisi samanzi sokhuni lwe-calcium.

(2) Umthelela kukhonkolo

I-ejenti yamandla yangaphambi kwesikhathi ingathuthukisa amandla ayo okuqala; Izinga lokuthuthuka le-ejenti efanayo yamandla asekuqaleni lincike enanini le-ejenti yamandla okuqala, izinga lokushisa elizungezile, izimo zokuphulukisa, isilinganiso sikasimende wamanzi kanye nohlobo lukasimende. Umthelela emandleni esikhathi eside kakhonkolo awuhambisani, nokuphezulu nokuphansi. I-ejenti yamandla yangaphambi kwesikhathi inomphumela omuhle ebangeni elifanele lomthamo, kodwa uma umthamo mkhulu, uzoba nomthelela omubi emandleni akamuva kanye nokuqina kukakhonkolo. I-ejenti yokunciphisa amanzi yangaphambi kwesikhathi nayo inomphumela omuhle wamandla wangaphambi kwesikhathi, futhi ukusebenza kwayo kungcono kunokwe-ejenti yamandla yangaphambi kwesikhathi, engalawula ukuguqulwa kwamandla sekwephuzile. I-Triethanolamine ingashukumisa amandla okuqala kasimende. Ingasheshisa ukugeleza kwe-tricalcium aluminate, kodwa ibambezele ukugeleza kwe-tricalcium silicate ne-dicalcium silicate. Uma okuqukethwe kuphezulu kakhulu, amandla okhonkolo azoncishiswa.

I-ejenti yamandla ehlala isikhathi eside ye-sulfate ayinawo umthelela ekugqwaleni kokuqinisa, kuyilapho i-chloride i-ejenti yamandla yakuqala iqukethe inani elikhulu lama-ion e-chloride, azokhuthaza ukugqwala kokuqinisa. Lapho umthamo mkhulu, ukumelana nokugqwala kwamakhemikhali, ukumelana nokugqoka kanye nokumelana nesithwathwa nakho kuzoncipha. Ukuze ukhonkolo, ukunciphisa amandla okuguquguquka kukakhonkolo nokwandisa ukushwabana kokuqala kukakhonkolo kunomthelela omncane esigabeni sakamuva sikakhonkolo. Njengamanje, ukusetshenziswa kwezithasiselo ezine-chloride kunqatshelwe ezingeni elisha likazwelonke. Ukuze uvimbele umphumela we-chloride usawoti ekuqiniseni ukugqwala, i-rust inhibitor nosawoti we-chloride kuvame ukusetshenziswa ndawonye.

Uma usebenzisa i-sulfate i-ejenti yamandla yakuqala, izokwandisa i-alkalinity yesigaba se-liquid ekhonkolo, ngakho-ke kufanele kuqashelwe ukuthi uma i-aggregate iqukethe i-silica esebenzayo, izothuthukisa ukusabela phakathi kwe-alkali ne-aggregate, futhi ibangele ukhonkolo ukuba wonakaliswe ngenxa ye-alkali. ukunwetshwa.