Umhla wokuThumela:13,Sep,2022
Inzuzo ebalulekileyo yezobugcisa kunye nezoqoqosho ze-arhente yokungenisa umoya esetyenziswa kwikhonkrithi yezorhwebo
I-Air-entraining admixture yi-admixture enokuvelisa inani elikhulu lamaqamza amancinci, axineneyo kwaye azinzileyo xa exutywe kwikhonkrithi. Ukomelela okunjengokumelana neqabaka kunye nokungatshoni. Ukongezwa kwe-agent ye-air-entraining kwi-concrete yezorhwebo kunokuthintela i-adsorption yesibini yeengqungquthela ze-samente ezihlakaziweyo kwikhonkrithi kunye nokuphucula ukugcinwa kwe-slump yekhonkrithi yorhwebo. Okwangoku, i-arhente yokungenisa umoya yenye yezinto eziyimfuneko kwi-admixture yekhonkrithi yorhwebo (ezinye zinciphisa amanzi kunye ne-retarder). EJapan nakumazwe asentshona, phantse akukho khonkrithi ngaphandle kwearhente yokungenisa umoya. EJapan, ikhonkrithi ngaphandle kwe-ejenti yokungenisa umoya ibizwa ngokuba ngekhonkrithi ekhethekileyo (njengekhonkrithi evuzayo, njl.).
Ukungena emoyeni kuya kuchaphazela amandla ekhonkrithi, okubhekiselele kwiziphumo zovavanyo phantsi kwemeko yekhonkrithi kunye ne-samente yamanzi. Xa umxholo womoya ukhula nge-1%, amandla ekhonkrithi aya kuncitshiswa nge-4% ukuya kwi-6%, kwaye ukongezwa kwe-agent-entraining agent kuya kunciphisa amandla ekhonkrithi. Izinga lamanzi linyuswe kakhulu. Iye yavavanywa nge-naphthalene-based superplasticizer. Xa izinga lokunciphisa amanzi ekhonkrithi li-15.5%, izinga lokunciphisa amanzi ekhonkrithi lifikelela ngaphezu kwe-20% emva kokongeza inani elincinci kakhulu le-agent-entraining agent, oko kukuthi, izinga lokunciphisa amanzi landa nge-4.5%. Kuzo zonke i-1% yokunyuka kwamanzi, amandla ekhonkrithi aya kunyuka nge-2% ukuya kwi-4%. Ngoko ke, okoko nje ubuninzi be-air-entraining
i-agent ilawulwa ngokungqongqo, kungekhona nje amandla ekhonkrithi akayi kuncipha, kodwa iya kwanda. Ukulawulwa komxholo womoya, iimvavanyo ezininzi zibonise ukuba umxholo womoya wekhonkrithi ephantsi kwamandla ophantsi ulawulwa kwi-5%, i-concrete ye-medium-power-concrete ilawulwa kwi-4% ukuya kwi-5%, kwaye i-concrete yamandla aphezulu ilawulwa kwi-3. %, kwaye amandla ekhonkrithi akayi kuncitshiswa. . Ngenxa yokuba i-ejenti yokungenisa umoya ineempembelelo ezahlukeneyo kumandla ekhonkrithi kunye nemilinganiselo eyahlukeneyo yesamente yamanzi.
Ukuqwalasela umphumo wokunciphisa amanzi we-air-entraining agent, xa ulungiselela i-concrete ye-concrete admixture, ulwelo lukamama lwe-arhente yokunciphisa amanzi lunokunciphisa kakhulu, kwaye inzuzo yezoqoqosho ininzi.
Ixesha lokuposa: Sep-14-2022
