Crack resistanceyekongiri yekumeso slab yakakosha kuhupenyu hwesevhisi yekongiri yakatarisana nedombo redombo (CFRD).kubhururuka madota ,MgO expansive agent, uye shrinkage-reducing admixture(SRA) pamichina yemagetsi, kuomesa shrinkage uye kutsemuka kuramba kweface slab kongiri zvinodzidzwa uye zvichienzaniswa nereferensi kongiri.Zvigumisiro zvinoratidza kuti kuwedzera kwe20% inobhururuka madota (kuburikidza nehuremu). of binder) inosimudzira kusimba kwekongiri pazera rekupedzisira. Kusiyana neizvi, kuwedzera kwe6% MgO expansive agent kana 1% SRA kunoderedza simba rekumanikidzika, kupatsanura simba rekugadzirisa uye kupera kwekupedzisira kune mamwe madhigirii pamazera akasiyana.Kubatanidzwa kwe20% fly ash, 6% MgO expansive agent, uye 1. % SRA inogona kuderedza kuoma kwakaoma pamazera akasiyana uye kugadzirisa kutanga kuparara kwekongiri, ukuwo kuiswa kwe6% MgO expansive agent kunobatsira kuvharidzira shrinkage kukura uye kuvandudza kuramba kwekongiri kupfuura kuwedzera kwe20% kubhururuka. madota kana 1%SRA.
Concrete face rockfill dam (CFRD) idhamu rinozadza dombo rine rockfill sesimba guru uye yakakwira kongiri kumeso seye anti-seepage main body. Nekuda kwehunhu hwayo hwekuchengetedza kwakanaka, kuchinjika kwakasimba, nguva pfupi yekuvaka uye mutengo wakaderera, kongiri inotarisana nematombo ematombo ave imwe yemhando dzinoshandiswa zvakanyanya mumadhamu mukugadzira madhamu. Concrete slabs akajairwa akatetepa uye mitsetse-senge zvimiro zvinogara zvichitsemuka nekuda kwekushanduka kwetembiricha, vhoriyamu deformation uye kugadzika kwedhamu. Kumuviri wedhamu, kana paine kutsemuka pachiso chekongiri, zvinoparadza kutendeseka uye kusimba kwechimiro chemuviri wedhamu, uye gaka rinokonzerwa nekutsemuka kweplate yechiso rinogona kubvumira mvura yekunze kuti ipinde mukongiri. izvo zvinokonzeresa kudonha kwemuviri wedhamu. Naizvozvo, kuvandudza kutsemuka kupikisa kwekongiri kumeso slabs inyaya yakakosha ine chekuita nekushanda kwakachengeteka kwekongiri yakatarisana nematombo ematombo. Ikozvino mainjiniya maitiro uye tsvagiridzo inoratidza kuti huru yehunyanzvi matanho ekuvandudza kutsemuka kuramba kwekongiri yechiso inosanganisira kudzora kunaka kwekongiri mbishi, optimizing kongiri musanganiswa reshiyo, kuwedzera nhunzi madota uye kuwedzera kwakakodzera huwandu hwefiber.Iyo huru zvikamu zvekongiri shrinkage reducer imhando yepolyalcohol kana polyether organic compounds uye zvinobva kwavari. Zvidzidzo zvakaratidza kuti kuwedzera kwe shrinkage kudzikisa mumiririri kunogona kuderedza kushushikana kwepasi kwekongiri pore mvura, nekudaro kuderedza shrinkage kushushikana kunogadzirwa kana capillary pores inorasa mvura, uye nekuvandudza kutsemuka kwekongiri kune imwe nhanho. Kuwedzerwa kweMgO yekuwedzera mumiririri panguva yekugadzirira kongiri inzira yakajairika yekudzora kuputika. Sezvo iyo MgO yekuwedzera mumiriri ichaburitsa imwe vhoriyamu yekuwedzera panguva yekongiri yekumisikidza uye kuomesa maitiro, inogona kutsiva iyo kongiri shrinkage, kusanganisira tembiricha shrinkage, kuomesa shrinkage uye self-shrinkage, nokudaro kuderedza kuitika kwekongiri kutsemuka. Parizvino, MgO yekuwedzera mumiriri yakashandiswa zvakabudirira kune yakawanda kongiri yehydropower station uye yakawana yakanaka anti-kupaza maitiro. Nekudaro, pane zvishoma zvidzidzo nezve mhedzisiro ye shrinkage inoderedza uye MgO yekuwedzera mumiriri pane kutsemuka kuramba kwekongiri yechiso.
Nguva yekutumira: Kurume-09-2022