Chiitiko che efflorescence mudhaka chine hukama nehydroxypropyl methylcellulose?

Chiitiko che efflorescence ndechekuti: yakajairika kongiri ndeye silicate, uye kana ikasangana nemhepo kana hunyoro mumadziro, iyo silicate ion inopinda hydrolysis reaction, uye iyo inogadzirwa hydroxide inosanganiswa nesimbi ions kugadzira hydroxide ine yakaderera solubility (iyo makemikari pfuma Alkaline), kana tembiricha ichikwira, mhute yemvura inoputika, uye iyo hydroxide inodonha kubva kumadziro. Nekubuda kwemvura zvishoma nezvishoma, iyo hydroxide inonaya pamusoro pesamende simende. Nokufamba kwenguva, pende yepakutanga yekushongedza Kana pende nezvimwe zvinhu zvinosimudzwa uye hazvichanamatira kumadziro, uye kuchena, kusvuura, uye kuputika kuchaitika. Iyi nzira inonzi "pan-alkali". Saka, haisi iyo ubiquinol inokonzerwa nehydroxypropyl methylcellulose.

Mutengi akati chiitiko: iyo yakapfapfaidzwa grout yaakaita ichava nepani-alkali pamadziro ekongiri, asi haizooneki pamadziro ezvidhinha akapiswa, izvo zvinoratidza kuti silicic acid iri simende inoshandiswa pamadziro ekongiri Yakanyanya munyu (yakasimba. alkaline munyu). Efflorescence inokonzerwa nekubuda kwemvura inoshandiswa mukupfapfaidza grouting. Nekudaro, hapana silicate pamadziro ezvidhinha akapiswa uye hapana efflorescence ichaitika. Naizvozvo, kuitika kwe efflorescence hakunei nekupfapfaidza.

Solution

1. Iyo silicate content ye basekrete simenti inoderedzwa.

2. Shandisa anti-alkali back coating agent, mhinduro inopinda mudombo kuti ivhare capillary, kuitira kuti mvura, Ca (OH) 2, munyu uye zvimwe zvinhu zvisingagoni kupinda, uye kugura nzira yepan-alkaline phenomenon.

3. Kudzivirira kupindira kwemvura, usasasa mvura yakawanda isati yavakwa.

Kurapa kwepan-alkaline phenomenon

Iyo ibwe efflorescence yekuchenesa mumiriri pamusika inogona kushandiswa. Iyi yekuchenesa mumiriri imvura isina ruvara inopenya inogadzirwa neasiri-ionic surfactants uye zvinonyungudutsa. Iine humwe hunoita pakucheneswa kwemamwe matombo echisikigo. Asi usati washandisa, ita shuwa kuita diki sampuli test block kuti uedze maitiro uye usarudze kana uchiishandisa.