Ubudahangarwa bw'imitsi ni ikimenyetso cy'ingenzi cya tekiniki cyo gupima ubuziranenge bw'imitsi irwanya imitsi.Hydroxypropyl methyl celluloseni polymer ishongera amazi, izwi kandi nka resin ishongera amazi cyangwa polymer ishongera amazi. Yongera imiterere y'uruvange binyuze mu kongera ubukana bw'amazi avanga. Ni ubwoko bw'ibikoresho bya polymeri bikunda amazi, bishobora gushonga mu mazi bigahinduka umuti cyangwa amazi ashobora gutanyagurika. Igerageza ryerekana ko iyo ingano ya naphthalene system superplasticizer yiyongereye, kongeramo superplasticizer bizagabanya ubudahangarwa bw'uruvange rushya rwa sima. Ibi biterwa n'uko naphthalene series igabanya amazi neza cyane iba iy'igikoresho gikora ku buso, iyo igabanya amazi yongewe kuri mortar, igikoresho gikora mu buso bwa sima bureba hejuru y'uduce twa sima dufite umuriro umwe, imiterere y'amashanyarazi yo gukurura uduce twa sima ikorwa no kugabanya, gupfunyika mu miterere y'amazi, bizatuma igice cya sima gitakaza. Muri icyo gihe, byagaragaye ko hamwe n'ubwiyongere bw'ibice bya HPMC, kurwanya gutanyagurika kwa mortar nshya ya sima iba nziza kandi nziza.
Ibiranga imbaraga za sima:
Ubuvanga bwa sima yo munsi y'amazi ya HPMC idakwirakwira mu mazi bwakoreshejwe mu kubaka ishingiro ry'umuhanda munini, kandi imbaraga z'igishushanyo mbonera zari C25. Nyuma y'ikizamini cy'ibanze, igipimo cya sima ni 400kg, umukungugu wa silica uvanze 25kg/m3,HPMCIgipimo cyiza ni 0.6% by'igipimo cya sima, igipimo cya sima y'amazi ni 0.42, igipimo cy'umucanga ni 40%, umusaruro wa naphthalene ugabanya amazi neza ni 8% by'igipimo cya sima, icyitegererezo cya sima mu kirere ni 28d, imbaraga mpuzandengo ni 42.6MPa, imbaraga mpuzandengo za sima iva munsi y'amazi ifite uburebure bwa mm 60 mu mazi ni 36.4mpa mu gihe cy'iminsi 28, kandi igipimo cy'imbaraga za sima iva mu mazi na sima iva mu kirere ni 84.8%, bigaragaza ingaruka zikomeye.
1. Kongeramo HPMC bigira ingaruka zigaragara ku gutinza uruvange rwa morti. Iyo ingano ya HPMC yiyongereye, igihe cyo gushyiraho mortiyo cyongererwa uko bikurikirana. Mu gihe kimwe n'ingano ya HPMC, igihe cyo gushyiraho mortiyo yo munsi y'amazi kiba kirekire kuruta icy'umwuka. Iki kintu ni ingirakamaro mu kuvoma sima yo munsi y'amazi.
2, ivanze na hydroxypropyl methyl cellulose ya sima nshya ifite isano ryiza, hafi ya yose nta kintu na kimwe gitera kuva amaraso.
3, igipimo cya HPMC n'igikenewe cy'amazi ya mortiweri byaragabanutse hanyuma bikiyongera cyane.
4. Gushyiramo icyuma gigabanya amazi byongera ikibazo cyo kwiyongera k'ubukene bw'amazi kuri sima, ariko bigomba kugenzurwa mu buryo bukwiye, bitabaye ibyo rimwe na rimwe bizagabanya ubukana bw'amazi ya sima nshya.
5. Nta tandukaniro rinini riri hagati y’ibipimo by’urutare rwa sima ivanze na sima idafite ikintu, kandi nta tandukaniro rinini riri hagati y’ibipimo by’isima ivanze n’amazi n’ibipimo by’urutare rwa sima ivanze n’umwuka. Ibipimo by’urutare rwa sima ivanze n’amazi 28d biri kure cyane. Impamvu nyamukuru ni uko kongeramo HPMC bigabanya cyane igihombo n’ikwirakwira rya sima mu gihe cyo kuyisukamo, ariko binagabanya urugero rw’urutare rwa sima. Muri uwo mushinga, mu gihe cyo kwemeza ko ingaruka zo kuyisukamo mu mazi zitayinjiramo, ingano y’uruvange rwa HPMC iragabanuka uko bishoboka kose.
6, ongerahoHPMCmunsi y’amazi ntabwo ikwirakwiza beto ivanze, igenzura ingano y’imbaraga nziza, umushinga w’igerageza ugaragaza ko igipimo cy’imbaraga zo gukora beto mu mazi no gukora mu kirere ari 84.8%, ingaruka ni nini cyane.
Igihe cyo kohereza ubutumwa: 25 Mata 2024