Umhla wokuposa: 1, Apr, 2024
Kuyakholelwa ngokubanzi ukuba amaqondo obushushu aphezulu, kokukhona amasuntswana e-ceng Kwangelo xesha, amaqondo obushushu aphezulu, eyona nto icacileyo ye-hydration ye-qumed iya kuthatha iarhente yokunciphisa amanzi ePolycarbaple. Phantsi kwempembelelo edibeneyo yeziphumo ezibini, njengoko iqondo lobushushu liyanda, ulwelo lwekhonkrithi luba lubi ngakumbi. Esi sigqibo sinokuchaza kakuhle i-fanomenon apho i-faridity yentshuntshe xa iqondo lokushisa liye lahla, kwaye ilahleko yethayile yekhonkrithi inyuka xa inyuka iqondo lokuphuma liphuma khona xa iqondo lobushushu liphuma xa inyuka iqondo lokuphuma liphuma. Nangona kunjalo, ngexesha lokwakha, kwafunyaniswa ukuba i-flreyity yekhonkrithi ihlwempuzekile kumaqondo obushushu asezantsi, kwaye xa iqondo lobushushu lamanzi lokuxuba liyanda, ulwelo lwekhonkrithi emva kokuba umatshini unyuswe. Oku akunakuchazwa sesi sigqibo singentla. Ukuza kuthi ga ngoku, iimvavanyo ziqhutywa ukuhlalutya, fumana izizathu zokuphikisana, kwaye unike uluhlu lobushushu obufanelekileyo kwikhonkrithi.
Ukwenzela ukufundisisa ifuthe lokuxuba amaqondo obushushu amanzi kwifuthe lokusasaza kwe-polycarbargy ye-Polycarbarlate arhente yokunciphisa amanzi. Amanzi nge-0 ° C, i-10 ° C, i-20, i-20, ne-40 ° C, i-C ilungiswe ngokulandelelana uvavanyo lwesamente.
Uhlalutyo lubonisa ukuba xa ixesha lokuphuma-lomatshini lifutshane, ukwandiswa kwesamente ye-slidery kuqala emva koko kuncipha njengoko iqondo lobushushu liyanda. Isizathu seli ntle bubushushu buchaphazela zombini izinga lokuhamba-quka kunye nenqanaba le-adsorption ye-Superplasticistizer. Xa iqondo lobushushu liyaphuma, ngokukhawuleza inqanaba le-adsorption yeemolekyuli ze-superplasticiezer zezi, okona kubhetele. Kwangelo xesha, inqanaba lokuhamba-qoko lwenziwa likhawuleze, kwaye ukusetyenziswa kwe-arhente yokunciphisa amanzi ngeemveliso ze-hydimes kuyanda, okunciphisa ulwelo. Ukwandiswa kokuqala kwesamente yesamente kuyachaphazeleka ngenxa yezi zinto zidibeneyo.
Xa ukuxuba kweqondo lobushushu lamanzi yi -10 ° C, inqanaba le-adsorption ye-superplastizer kunye nenqanaba lokuhamba-mali lesamente lincinci. Phakathi kwazo, i-adsorvo ye-arhente yokunciphisa amanzi kwi-Clementles yesamente yinto elawulayo. Ukusukela i-adsorvor yearhente yokunciphisa amanzi kwi-cleancesunts xa amaqondo obushushu aphantsi, ireyithi yokuqala yokunciphisa amanzi iphantsi, ebonakaliswa kwi-slidity yokuqala yesamente.
Xa iqondo lobushushu lamanzi okuxuba liphakathi kwe-20 ne-30 ° C, inqanaba le-Arsorvotion ye-Arserment Arder yokuNikelwa kweShupsiment ngaxeshanye, kunye nenqanaba le-adsorction lokunciphisa iimolekyuli ezinciphisa amanzi anyusa ngakumbi Ngokucacileyo, eboniswa ngokwanda kolwelo lokuqala lwesamente. Xa ukuxuba kwamaqondo obushushu amanzi yi-≥40 ° C, izinga lokuhamba-quka ngesamente liyanda kakhulu kwaye ngokuthe ngcembe iba yinto elawulayo. Ngenxa yoko, inqanaba le-adsortion ye-agesunt yokunciphisa amanzi (i-Adsorption Ireyithi yokusetyenziswa kwexabiso le-thando) iyancipha, kwaye i-cemetion ibonisa ukunciphisa amanzi angonelanga. Ke ngoko, kukholelwa ukuba isiphumo sokusasazeka kokuqala kwe-arhente yokupheliswa kwamanzi yeyona nto iphakathi kwamanzi aphakathi kwe-20 ne-3 ° C kunye neqondo lobushushu liphakathi kwe-18 ne-C.
Xa ixesha lokuphuma-lomatshini lide, ukwandiswa kwesamente ehambelana nokugqitywa kwesigqibo esamkelekileyo ngokubanzi. Xa ixesha lanele, i-polycarbants ye-polycarberlatea-ukunciphisa amanzi inokubekwa kwi-ceaments amasuntswana kwiqondo lokushisa ngalinye de kube kugcwele. Nangona kunjalo, kumaqondo obushushu asezantsi, iarhente encinci yokunciphisa amanzi ityiwa kwesamente yesamente. Ke ngoko, njengoko ixesha lihamba, ukwandiswa kwesamente yesamente kuya kunyuka ngamaqondo obushushu. Ukunyuka nokuncipha.
Olu vavanyo aluthathe nje kuphela isiphumo sobushushu, kodwa ufumana ingqalelo kwisiphumo sexesha lokusasaza kwe-polycarbargy ye-polycarberbacsess windows, esenza isigqibo ngakumbi kwinyani yobunjineli. Izigqibo ezizobe zezi zilandelayo:
. Njengoko ixesha lokuxuba liyanda, ulwelo lwe-cemence lunyuka. Njengobushushu bokuxuba amanzi onyukayo, ukwandiswa kwesamente i-slidery yokuqala inyuka kwaye emva koko inciphe. Kunokubakho umahluko obonakalayo phakathi kwekhonkrithi yekhonkrithi njengoko iphuma kumatshini kunye nemeko yekhonkrithi njengoko igalelwe kwisiza.
. Ngexesha lokwakha, ingqalelo kufuneka ihlawulwe kulawulo lobushushu bamanzi. Iqondo lobushushu lesimboli liphakathi kwe-18 ne-22 ° C, kwaye ulwelo yeyona nto ilungileyo xa iphuma kumatshini. Thintela i-phenomenon yokuncitshiswa kwekhonkrithi ebangelwe bubushushu bamanzi agqithisileyo.
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IXESHA LOKUQALA: APR-01-2024
