RDP (redispersible looj hmoov) yog cov khoom siv ntxiv uas npaj emulsion rau hauv cov hmoov nqus dej ua ke thiab yog siv dav hauv cov ntaub ntawv hauv tsev. Tsis meej tshwj xeeb hauv cov nplais nplaum thiab cov cement-raws li cov dej tsis zoo, RDP tseem txhim kho cov khoom siv los ntawm cov ntaub ntawv no vim nws cov kev ua tau zoo ua tau zoo.
1. Lub luag haujlwm ntawm RDP hauv cov nplais nplaum
Pobzeb nplaum tsuas yog siv los ua kom khov kho cov vuas luaj Txij li feem ntau cov pobzeb nplaum siv cov cement yog cov khoom siv ntxig yooj yim tom qab ua kom tawv nqaij tawv tom qab cov khoom siv no, uas yuav txo qhov kev ua tau zoo. Tom qab ntxiv RDP, ib qho qauv hluav taws xob tuab tuaj yeem tsim nyob rau hauv lub mightened matrix, yog li cuam tshuam ntau porosity thiab txhim kho dej tsis kam.
Ua kom muaj kev sib txuas lus zoo: RDP kev cuam tshuam nrog cov xis ua yeeb yaj kiab ua rau tsim cov khoom siv polymer, uas txhim kho cov khoom siv nyuaj thiab yooj ntawm cov khoom siv, yog li ua tau zoo tiv thaiv noo noo.
Txhim kho cov nuj nqis tsis kam: nyob rau hauv qhuav-ntub-ntub cov kev ntxhov siab tau los ntawm deformation ntawm lub txheej txheej thiab zam kev tawg ntawm txheej txheej sib txuas.
Txhim Kho Cov Kev Nyab Xeeb Kev Ua Tau Zoo: Nyob rau hauv ib puag ncig noo ntawm ib txwm muaj cov adhesives yuav txo qis rdp muaj peev xwm tswj hwm lub zog loj hauv dej ib puag ncig.
2. Kev hloov kho cov nyhuv ntawm RDP hauv Maas-boed waterproof cug
Cov Maas-raws Waterproof Cug feem ntau siv hauv kev tsim cov txheej txheej tsis zoo thiab cov dej tsis kam cuam tshuam nrog cov nyhuv waterproofing. Tsoos ib txwm chleet yog nquag rau micro-nrib pleb tshwm sim los ntawm kev hloov pauv ntawm qhov kub thiab av noo, yog li poob nws cov dej muaj nuj nqi. Tom qab ntxiv RDP, kev ua yeeb yam ntawm kev tshuaj khib taub dej yog qhov zoo tshaj plaws:
Txhim kho impermility: RDP hais tawm thaum lub sij hawm sib xyaw ua ke thiab ua haujlwm ntawm cov khoom siv polymer, uas tuaj yeem foob tau micro qhov hws thiab tiv thaiv kev ua kom pom zoo.
Txhim Kho Yooj Yim: Cov Tshuaj Khov Tsis Siv Tshuaj yog ntau dhau mus tawg nyob rau hauv lub tsheb thauj mus los ntev lossis deformation ntawm lub hauv paus txheej. Qhov sib txuas ntawm RDP ua rau lub tshuaj khib hloov tau ntau dua thiab tuaj yeem deform nrog lub hauv paus txheej yam tsis muaj kev puas tsuaj nws lub cev dej.
Txhim kho cov kev tsim muaj: Cug Cheeb Tsam Muaj viscous ntau dua thiab yooj yim dua li sag thaum lub sijhawm tsim thiab txhim kho ntawm cov txheej txheej waterproof txheej.
3. Mechanism ntsuas ntawm RDP
Raws li kev hloov kho, RDP Cov nyhuv tiv thaiv txiaj ntsig yog feem ntau vim yog cov txheej txheem hauv qab no:
Polymer zaj duab xis: RDP yog redispersed thaum lub sij hawm hydration ua ib qho kev ua yeeb yaj kiab txuas ntxiv, nce kev cog qoob loo thiab impermetility ntawm cov khoom.
Txhim kho inhfacial bonding: RDP ua cov nyhuv bridging ntawm Caas hais thiab muab cov khoom sib koom tes, txhim kho kev sib txuas lus thiab ua cov khoom sib txuas ntxiv.
Txhim kho kev hloov pauv tau: RDP muab cov khoom siv ib qho kev hloov zuj zus thiab tawg tsis kam, pab txhawb kev nyuaj siab ntxhov plawv los ntawm ya raws thiab kub hloov.
4. Daim Ntawv Thov Kev Ua Haujlwm thiab Kev Lag Luam
Cov kev sim tau pom tias ntxiv tus nqi tsim nyog ntawm RDP (feem ntau yog 2%-ement% of ntawm qhov hnyav tsis zoo thiab kev sib raug zoo lub neej ntawm cov khoom. Txawm hais tias tus nqi ntawm RDP yog qhov tseem ceeb, nws cov txiaj ntsig zoo hauv kev txhim kho durabiling durabiling detabent, muab kev pab rau tom qab no yog qhov ua tau zoo.
RDP tau dhau los ua ib qho ntawm cov khoom siv tsis tseem ceeb rau cov ntaub ntawv hauv tsev los ntawm kev txhim kho cov khoom lag luam nplais thiab cov txiv xis tsis muaj pob zeb. Cov kev xaiv tsim nyog ntawm RDP thiab nws cov kev sib tw tsis tuaj yeem txhim kho cov khoom siv kev ua tau zoo, tab sis kuj ua kom zoo rau cov txiaj ntsig kev tsim kho thiab ua kom lub tsev ua haujlwm ntev ntawm lub tsev.
Lub sijhawm Post: Feb-15-2025