Post Zuva: 1, Kubvumbi, 2024
Izvo zvinowanzoda kuti kukwidziridzwa uku tembiricha, iyo simenti yemisangano ichashambidza iyo Polycarboybolate mvura-kuderedza mumiririri. Panguva imwecheteyo, yakakwira tembiricha, iyo iri pachena iyo simende hydration zvigadzirwa zvichapedza iyo polycarboyboxy yemvura-kuderedza mumiririri wemvura. Pasi pesimba rakabatanidzwa remhedzisiro miviri, sezvo tembiricha inowedzera, iyo fluidity yekongiri inova yakaipa. Mhedziso iyi inogona kutsanangura chaizvo chiitiko chekunzwa kwekongiri chinowedzera kana tembiricha yakangoerekana yadonha, uye kurasikirwa kwekutsvedza kwekuwedzera kongiri kana tembiricha ichisimuka. Nekudaro, panguva yekuvakwa, zvakawanikwa kuti fliliity yekongiri ine murombo pakudziya kwemvura, uye kana tembiricha yemvura inosanganiswa yakawedzera, iyo fluidity yekongiri mushure mekuwedzera kwemuchina. Izvi hazvigone kutsanangurwa nemhedziso iri pamusoro. Kuti izvi zviyeuke, kuedza kunoitwa kuti vaongorore, tsvaga zvikonzero zvekupokana, uye nekupa tembiricha yakakodzera yekongiri.
Kuti udzidze mhedzisiro yekuvhiringidza kwemvura tembiricha pamhedzisiro yePolycarboxylate yemvura-kuderedza mumiririri. Mvura pa 0 ° C, 10 ° C, 20 ° C, 20 A ° C, 30 ° C ,,40 ° C, CL Ai Yakagadzirirwa Kuenderana neSement-Supplastic Scomputilation Kuenderana.
Kuongorora kunoratidza kuti kana nguva yekubuda-yemuchina ipfupi, kuwedzera kwesimbe slurry kutanga kunowedzera uyezve kuderera sezvo tembiricha inowedzera. Chikonzero cheichi chiitiko ndechekuti tembiricha inokanganisa zvese simende hydration chiyero uye iyo adsorption mwero weiyo superplasticticastionger. Kana tembiricha ichisimuka, inokurumidza kuwanda kwemukuru wemanyorerwo makuru, zvirinani kupararira kwekutanga kuchave. Panguva imwecheteyo, iyo hydration mwero wesimendi zvichitsauka, uye kushandiswa kwemumiriri-kudzora kwemvura ne hydration zvigadzirwa zvinowedzera, izvo zvinoderedza fluidity. Kuwedzera kwekutanga kweSpoment pasita inokanganiswa nemhedzisiro yezvinhu izvi zviviri.
Kana kusanganisa kwemvura tembiricha iri Pakati pavo, adSorption yemumiririri-kuderedza kwemvura pane coment zvidimbu ndizvo zvinodzora chinhu. Sezvo dendorption yekushambadzira kwemvura pamvura pane coment zvidimbu kana tembiricha yakaderera, iyo yekutanga mvura-yekudzora mwero yakaderera, iyo inoratidzwa mukuwedzera kwekutanga kweiyo simenti slumry.
Kana tembiricha yemvura iri pakati pe20 kusvika makumi matatu Zviripachena, izvo zvinoratidzwa mukuwedzera kwekutanga fluidity yeiyo simbe slurry. Kana kusanganisa kwemvura tembiricha iri id Nekuda kweizvozvo, iyo Net Adsorption mwero wekudzora kwemvura molecules Naizvozvo, zvinotendwa kuti yekutanga kupatsanurana kwemvura kuderedza mumiriri kwakanakisa kana mvura yekusanganisa iri pakati pegumi nemakumi matatu tembiricha iri pakati pegumi nemasere kusvika 22 ° C.
Kana nguva yekubuda-yemuchina yakareba, iyo simende inosimbisa inoenderana neiyo nguva inowanzogamuchirwa mhedzisiro. Kana nguva yakwana, iyo Polycarboxylate yemvura-kuderedza mumiririri anogona kushambadzira pane simenti zvidimbu pane tembiricha imwe neimwe kusvikira yazara. Nekudaro, pakudziya kwakadzika, kushoma kwemvura-kuderedza mumiririri anodyiwa hyment hydration. Naizvozvo, nekufamba kwenguva, kuwedzera kweiyo simenti slurry ichawedzera nekushisa. Kuwedzera uye kuderera.
Iyi bvunzo isingarevereri tembiricha yekushisa, asi zvakare inoteerera kune iyo nguva yekuparadzira mhedzisiro yePolycarboxy yemvura-kuderedza mumiririri, kuita kuti mhedziso yakanyanya uye iri pedyo neinjiniya chaiyo. Mhedzisiro inodhonzwa ndeyekutevera:
. Sezvo nguva yekusanganisa inowedzera, iyo fluiliity yeiyo simbe slurry inowedzera. Sezvo tembiricha yemvura yekusanganisa inowedzera, kuwedzera kweiyo simbe slurry kutanga kunowedzera uyezve kuderera. Panogona kuve nemisiyano yakakosha pakati penzvimbo yekongiri sezvo ichibuda kunze kwemuchina uye mamiriro ekongiri sezvo ichidururwa pane saiti.
. Munguva yekuvakwa, kutarisirwa kunofanirwa kubhadharwa kune kutonga kwemvura tembiricha. Tembiricha yemasimendi slurry iri pakati pemakore gumi nemasere uye 22 ° C, uye iyo fluidity ndiyo yakanyanya kunaka kana ichinge yabuda muchina. Dzivirira chiitiko chekupedzisira chakadzikiswa chekongiri chakakonzerwa nekunyanyisa kupisa kwemvura.
.
Kutumira Nguva: Kubvumbi-01-2024
