Kugadzirwa kwesimbi nemashini kwave kuchiedzwa uye kuchikurudzirwa kwemakore mazhinji muChina, asi hapana kufambira mberi kwakakura kwakaitwa. Pamusoro pekusahadzika kwevanhu nezvekuchinja kukuru kuchaunzwa nekugadzirwa nemashini pakuvaka kwechinyakare, chikonzero chikuru ndechekuti pasi pemaitiro echinyakare, simbi yakasanganiswa panzvimbo iyi inogona kukonzera kuvharwa kwemapombi nemamwe mapurojekiti panguva yekuvaka nemashini nekuda kwematambudziko akadai sehukuru hwezvimedu uye mashandiro. Zvikanganiso hazvingokanganisi kufambira mberi kwekuvaka chete, asiwo zvinowedzera simba rekuvaka, izvo zvinobereka kutya kwevashandi nematambudziko uye zvinowedzera kuoma kwekusimudzira kuvaka nemashini.
Mumakore achangopfuura, nekutangwa kwemafekitori makuru edhaka rakasanganiswa nemvura munyika yese, mhando uye kugadzikana kwedhaka kwakavimbiswa. Zvisinei, dhaka rakasanganiswa nemvura rinogadziriswa uye rinogadzirwa nemafekitori. Kana tichitaura nezvezvinhu zvekugadzira chete, mutengo unofanirwa kunge wakakwira kupfuura wekusanganisa dhaka panzvimbo. Kana kupurasita nemaoko kukaenderera mberi, hazvizove nemubairo wekukwikwidzana pane dhaka rekusanganisa dhaka panzvimbo, kunyangwe paine nyika. Nekuda kwemutemo we "kurambidzwa kwemari", mafekitori matsva edhaka rakasanganiswa nemvura achiri kunetseka kuti awane mari, uye pakupedzisira anobhuroka.
Nhanganyaya pfupi yekushanda kwakazara kwedhaka rakapfapfaidzwa nemuchina
Zvichienzaniswa nedhaka rekare rakasanganiswa panzvimbo iyi, musiyano mukuru wedhaka rakapfapfaidzwa nemuchina ndewekuiswa kwemhando dzakasiyana dzezvinhu zvakaita sehydroxypropyl methyl cellulose ether iyo inogona kugadzirisa mashandiro edhaka, kuitira kuti dhaka idzva rishande zvakanaka, kuchengetedza mvura yakawanda, uye richiri kushanda zvakanaka mushure mekupomba kure uye kukwirira. Budiriro yaro huru iri mukushanda kwayo kwepamusoro uye mhando yakanaka yedhaka mushure mekuumba. Sezvo dhaka riine kumhanya kukuru kwekutanga panguva yekupfapfaidza, rinogona kubata zvakasimba substrate, izvo zvinogona kuderedza zvinobudirira chiitiko chekuvhunika nekutsemuka.
Mushure mekuongorora nguva dzose, zvakaonekwa kuti pakugadzirira dhaka rekupurasita rakapfapfaidzwa nemuchina, shandisa jecha rakagadzirwa nemuchina rine saizi yepamusoro ye2.5mm, huwandu hwehupfu hwedombo husingasviki 12%, uye gradation inonzwisisika, kana saizi yepamusoro yehunhu hwe4.75mm uye huwandu hwevhu husingasviki 5%. Kana mwero wekuchengetedza mvura yedhaka idzva rakasanganiswa wadzorwa pamusoro pe95%, kukosha kwekuenderana kunodzorwa painenge 90mm, uye kurasikirwa kwekuenderana kwemaawa maviri kunodzorwa mukati me10mm, dhaka rine mashandiro akanaka ekupomba uye mashandiro ekupfapfaidza, uye chitarisiko chedhaka rakaumbwa chakatsetseka uye chakachena, slurry yakafanana uye yakapfuma, haina kudzika, haina maburi uye haina kutsemuka.
Kukurukurirana nezveComposite Additives yeMuchina Sprayed Mortar
Maitiro ekuvaka dhaka rakapfapfaidzwa nemuchina anosanganisira kusanganisa, kupomba uye kupfapfaidza. Pachinongedzo chekuti fomura yacho inonzwisisika uye mhando yezvinhu zvakagadziriswa inokodzera, basa guru redhaka rakapfapfaidzwa mumuchina nderekunatsiridza mhando yedhaka rakapfapfaidzwa uye kuvandudza mashandiro ekupomba kwedhaka. Naizvozvo, dhaka rakapfapfaidzwa mumuchina rinoumbwa nemushonga wekuchengetedza mvura nemushonga wepombi. Hydroxypropyl methylcellulose ether imushonga wakanaka wekuchengetedza mvura, usingangogone kuwedzera viscosity yedhaka, asiwo unovandudza zvakanyanya kuyerera kwedhaka uye kuderedza kuparadzaniswa uye kubuda ropa pasi pekukosha kwakafanana kwakaitika. Mushonga wepombi unowanzo umbwa nemushonga wemhepo nemushonga wekuderedza mvura. Munguva yekusanganisa dhaka rakapfapfaidzwa, huwandu hwakawanda hwemabubbles emhepo anounzwa kuti aumbe bhora, izvo zvinogona kuderedza kuramba kwekukweshana pakati pezvikamu zveaggregate uye kuvandudza mashandiro ekupomba kwedhaka. Munguva yekupfapfaidza dhaka rakapfapfaidzwa nemuchina, kuzununguka kunokonzerwa nekutenderera kwepombi inotakura sikuruu kuchaita kuti dhaka riri muhopper rive rakapatsanurwa, zvichikonzera kugadzikana kudiki muchikamu chepamusoro uye kugadzikana kukuru muchikamu chezasi, izvo zvinozokonzera kuvharika kwepombi kana muchina uchishanda, uye Mushure mekuumba, mhando yedhaka harina kufanana uye rinowanzo pwanyika uye kutsemuka. Saka, pakugadzira zvinowedzerwa zvemuchina zvedhaka rinoputika nemuchina, mamwe ma stabilizer anofanirwa kuwedzerwa nemazvo kuti aderedze kupatsanurwa kwedhaka.
Vashandi pavaiita bvunzo yesimbi yakapfapfaidzwa nemuchina, chiyero chesimbi yakawedzerwa yaive 0.08%. Simba rekupedzisira raive nekushanda kwakanaka, kushanda zvakanaka pakupomba, hapana kudonha kwemvura panguva yekupfapfaidza, uye ukobvu hwepamusoro hwekupfapfaidza kamwe chete hwaigona kusvika 25px.
Nguva yekutumira: Zvita-20-2022