Basa remetakaolin mukongiri

(1) Kuvandudza kusimba kwesimbi yesimbi nesimende, kusimba kwakawanda ndechimwe chezviratidzo zvesimbi inoshanda zvakanyanya. Chimwe chezvinangwa zvikuru zvekuwedzera metakaolin ndechekuvandudza kusimba kwesimbi nesimende nesimende.

Poon nevamwe vake (2001) vakaita bvunzo dzesimba rekumanikidza pa slurries yesimende nechiyero chesimende yemvura che0.3, chakagadzirwa nekutsiva simende yePortland ne 0-20% (mass fraction) kaolin ne silica powder. Zvakabuda zvakaratidza kuti simba rekumanikidza re slurries yesimende ine 5% kusvika 20% kaolin raive rakakwirira kupfuura re reference cement pazera rese, nesimende ine 10% kaolin ichiratidza kuwedzera kwe20% musimba pamazuva 28 ne90 zvichienzaniswa ne reference cement. Simende ine 5% kusvika 10% silica powder yakaratidzawo kuwedzera kwe20% musimba pamazuva 28 ne90 zvichienzaniswa ne reference cement. Simba rayo pa 28d ne 90d rakaenzana nere kaolin cement, asi simba rayo rekutanga rakaderera pane re benchmark cement. Ongororo inoratidza kuti izvi zvinogona kunge zvine chekuita ne agglomeration yakanyanya ye silicon powder yakashandiswa uye kusakwana kwekupararira mu slurry yesimende.

(2) Li Keliang nevamwe (2005) vakadzidza mhedzisiro yekupisa kwe calcination, nguva ye calcination, uye huwandu hwe SiO2 ne A12O3 mu kaolin pabasa re metakaolin kuvandudza simba re simende. Konkriti ine simba rakawanda uye ma polymer evhu akagadzirwa achishandisa metakaolin. Mhedzisiro yacho inoratidza kuti kana huwandu hwe kaolin huri 15% uye chiyero che simende yemvura chiri 0.4, simba rekumanikidza remazuva makumi maviri nemasere i71.9 MPa. Kana huwandu hwe kaolin huri 10% uye chiyero che simende yemvura chiri 0.375, simba rekumanikidza remazuva makumi maviri nemasere i73.9 MPa. Uyezve, kana huwandu hwe metakaolin huri 10%, chiyero chebasa rayo chinosvika 114, iyo iri 11.8% yakakwira kupfuura huwandu hwakafanana hwe silicon powder. Saka, zvinotendwa kuti metakaolin inogona kushandiswa kugadzira simende ine simba rakawanda.

Qian Xiaoqian nevamwe vake (2001) vakadzidza hukama hwe axial tensile stress-strain hwekongiri nehuwandu hwe kaolin hwe 0, 0.5%, 10%, uye 15%. Vakaona kuti nekuwedzera kwehuwandu hwe kaolin, peak strain ye axial tensile strength yekongiri yakawedzera zvakanyanya, uye tensile elastic modulus yakaramba isina kuchinja zvachose. Zvisinei, simba rekumanikidza rekongiri rakawedzera zvakanyanya, uye compressive strength ratio yakadzikirawo saizvozvo. Kana huwandu hwe kaolin huri 15%, simba rekumanikidza uye compressive strength yekongiri iri 128% uye 184% ye reference concrete, zvichiteerana.

Cao Zhengliang nevamwe vake (2004) vakawana muongororo yavo pamusoro pesimba reupfu hwakatsetseka hwemetakaolin pakongiri kuti, pasi pekuyerera kwakafanana, dhaka rine 10% metakaolin rakawedzera simba rayo rekudzvanya uye simba reflexural ne6% kusvika 8% mushure memazuva makumi maviri nemasere. Kukura kwekutanga kwesimba rekongiri yakasanganiswa nemetakaolin kwakakurumidza kupfuura kwekongiri yakajairwa. Kana tichienzanisa nekongiri yekuenzanisa, kongiri ine 15% metakaolin ine kuwedzera kwe84% musimba rekudzvanya re3D axial uye kuwedzera kwe80% musimba rekudzvanya re28d axial, nepo static elastic modulus ine kuwedzera kwe9% mu3D uye kuwedzera kwe8% mu28d.

Huang Zhan nevamwe vake (2008) vakadzidza nezvemhedzisiro yekubatanidza metakaolin neslag pakusimba uye kugara kwenguva refu kwekongiri. Zvakabuda zvinoratidza kuti kuwedzerwa metakaolin neslag kongiri kunovandudza kusimba uye kugara kwenguva refu kwekongiri. Chiyero chakanakisa cheslag nesimende chiri pa3:7, zvichikonzera kusimba kwekongiri kwakakodzera. Musiyano we arch wekongiri yakabatana wakakwira zvishoma pane wekongiri imwe chete yeslag, nekuda kwemhedzisiro yeash yevolcanic yemetakaolin. Simba rayo rekupwanya rakakwira kupfuura rekongiri yekuenzanisa.

Yang Fengling nevamwe vake (2011) vakashandisa huwandu hwakaenzana hwemetakaolin, ash inobhururuka, uye slag kutsiva simende, uye vakasanganisa metakaolin neash inobhururuka uye slag vakaparadzana kugadzira kongiri. Kushanda, simba rinodzvanywa, uye kugara kwenguva refu kwekongiri kwakadzidzwa. Zvakabuda zvakaratidza kuti kaolin payakashandiswa kutsiva 5% kusvika 25% yesimende zvakaenzana, simba rinodzvanywa rekongiri pazera rese rakavandudzwa; Kana kaolin ikashandiswa huwandu hwakaenzana kutsiva simende ne20%, simba rinodzvanywa pazera rega rega rakakodzera. Simba pa3d, 7d, uye 28d rakakwirira ne26.0%, 14.3%, uye 8.9% kupfuura rekongiri isina kaolin yakawedzerwa, zvichiteerana. Izvi zvinoratidza kuti kune simende yeType II Portland, kuwedzerwa kwemetakaolin kunogona kuvandudza simba rekongiri yakagadzirwa.

Zhang Chengbo nevamwe vake (2012) vakashandisa simbi inoraswa, metakaolin, nezvimwe zvinhu sezvinhu zvikuru zvekugadzira simende ye geopolymer kuti itsive simende yePortland yechinyakare, vachizadzisa chinangwa chekuchengetedza simba, kuderedza kushandiswa, uye kushandura marara kuita pfuma. Zvakabuda zvakaratidza kuti kana huwandu hwesimbi neash inobhururuka zvaive 20%, simba re test block pamazuva makumi maviri nemasere rakasvika padanho repamusoro (95.5MPa). Sezvo huwandu hwe slag yesimbi yakawedzerwa huchiwedzera, inogonawo kuita basa rakati mukuderedza kuderera kwesimende ye geopolymer.

Chen Guocan (2010) akatora nzira yehunyanzvi ye "Portland cement+active mineral admixture+high-efficiency water reducing agent", tekinoroji yekongiri yemvura ine magnetized uye maitiro ekugadzirira enguva dzose, uye akaita kuyedza kwekugadzirira kongiri yematombo ine slag ine simba shoma-yakakwira achishandisa zvinhu zvakawanikwa munharaunda zvakaita sematombo neslag. Mhedzisiro yacho inoratidza kuti chiyero chakakodzera chemetakaolin i10%. Chiyero chehuremu nesimba chemupiro wesimende payuniti yehuremu yekongiri yematombo ine simba rakawanda-yakakwira ingangoita ka4.17 pane kongiri yakajairika, ka2.49 pane kongiri ine simba rakawanda (HSC), uye ka2.02 pane kongiri yepoda inogadziriswa (RPC). Saka, kongiri yematombo ine simba rakawanda-yakakwira yakagadzirwa nesimende ine dosage shoma ndiyo nzira yekukura kwekongiri munguva yehupfumi hwepasi-pasi.

(3) Mushure mekuwedzera kaolin ine chando chinodzivirira kongiri, saizi yepore yekongiri inodzikira zvakanyanya, zvichivandudza kutenderera kwekongiri inonyunguduka. Feng Naiqian (2002) akawana kuti pasi pehuwandu hwakati hwema cycles ekunyunguduka kwekongiri, elastic modulus yesample yekongiri ine 15% kaolin content pamazuva makumi maviri nemasere ekuberekwa yakakwira zvakanyanya kupfuura iyo yekongiri inotarisirwa pamazuva makumi maviri nemasere ekuberekwa. Kushandiswa kwakabatana kwemetakaolin nedzimwe mineral ultrafine powders mukongiri kunogona kuvandudza kushanda kwekongiri kwenguva refu.