Mwero wekuchengetedza mvura wehydroxypropyl methylcellulose unobata sei dhaka?

A. Kudiwa kwekuchengetedza mvura

Kuchengetedzwa kwemvura kwedhaka zvinoreva kugona kwedhaka kuchengetedza mvura. Doka rine mvura isina kunaka rinowanzobuda ropa uye kupatsanurwa panguva yekufambisa uye kuchengetedza, kureva kuti, mvura inoyangarara pamusoro, uye jecha nesimende zvinonyura pazasi. Inofanira kumutswa zvakare isati yashandiswa.

Ese marudzi emabhesi anoda dhaka rekuvaka ane kumwe kunyura kwemvura. Kana kuchengetwa kwemvura kwedhaka kwakashata, iyo yakagadzirira-yakasanganiswa dhaka ichabatwa nokukurumidza apo dhaka rakagadzirirwa rakasanganiswa rinosangana nebhokisi kana chigadziko panguva yekushandiswa kwedhaka. Panguva imwecheteyo, nzvimbo yekunze yedhaka inoputira mvura mumhepo, zvichiita kuti hunyoro husina kukwana mudhaka nekuda kwekushaya mvura, izvo zvinokanganisa kuwedzera kwe hydration ye simenti, uye panguva imwechete inokanganisa kukura kwesimba revhu. , zvichikonzera simba, kunyanya kuwirirana pakati pevhu rakaoma uye nheyo yepasi. inodzika, zvichiita kuti dhaka ritsemuka nekudonha. Kune dhaka rine mvura yakanaka yekuchengetedza, iyo simende hydration inokwana, simba rinogona kugadzirwa zvakajairika, uye rinogona kusungirirwa zviri nani kune base layer.

Yakagadzirira-yakasanganiswa dhaka inowanzovakwa pakati pezvivharo zvinotora mvura kana kupararira pachigadziko, ichiumba yose pamwe chete nechigadziko. Mhedzisiro yekusachengetwa kwemvura isina kunaka pamhando yeprojekiti ndeiyi:

1. Nekuda kwekurasika kwakanyanya kwemvura kubva mudhaka, zvinokanganisa kugadzikana uye kuoma kwedhaka, uye kuderedza simba rekubatanidza pakati pevhu nepamusoro, izvo zvisiri kungokanganisa basa rekuvaka, asi zvakare kuderedza simba remasonry, nokudaro kuderedza zvakanyanya kunaka kweprojekti.

2. Kana dhaka risina kunyatsobatanidzwa, mvura inobatwa nyore nyore nezvidhinha, zvichiita kuti dhaka rive rakaoma uye rakaoma, uye kushandiswa hakuna kuenzana. Kana chirongwa ichi chichiitwa, hachingokanganisa kufambira mberi, asiwo chinoita kuti rusvingo ruve nekuputika nekuda kwekuderera;

Nokudaro, kuwedzera kuchengetwa kwemvura kwedhaka hakusi kungobatsira pakuvaka, asiwo kunowedzera simba.

B. Nzira dzechinyakare dzekuchengetedza mvura

Mhinduro yechinyakare ndeyekudiridza hwaro, asi hazvibviri kuve nechokwadi kuti chigadziko chakanyoroveswa. Chinangwa chakanaka che hydration chesimende dhaka pachigadziko ndechekuti: simenti hydration chigadzirwa inopinda munheyo pamwe chete nekuita kwechigadziko chinotora mvura, ichigadzira "kiyi yekubatanidza" inoshanda nechigadziko, kuitira kuti uwane iyo inodiwa chisungo simba.

Kudiridza zvakananga pamusoro pechigadziko kunokonzeresa kupararira kwakanyanya mumvura kunyura kwegasi nekuda kwekusiyana kwekushisa, nguva yekudiridza, uye kufanana kwekudiridza. Nheyo yacho ine mvura shoma uye icharamba ichitora mvura mudhaka. Pamberi pe simenti hydration ichienderera mberi, mvura inobatwa, iyo inokanganisa kupinda kwe simenti hydration uye hydration zvigadzirwa mumatrix; chigadziko chine mvura yakakura, uye mvura iri mudhaka inoyerera ichienda pasi. Iyo yepakati yekutama kumhanya inononoka, uye kunyange mvura-yakapfuma layer inoumbwa pakati pedhaka uye matrix, iyo inokanganisawo kusimba kwechisungo. Naizvozvo, kushandisa yakajairwa base yekudiridza nzira haizongokundikana kugadzirisa zvinobudirira dambudziko rekunyura kwemvura yakakwira yemadziro emadziro, asi kuchakanganisa kusimba kwekubatanidza pakati pedhaka nechigadziko, zvichikonzera kuputika nekutsemuka.

C. Basa rekuchengetedza mvura zvakanaka

Iyo yakakwirira yekuchengeta mvura kuita kwedhaka ine zvakawanda zvakanaka:

1. Iyo yakanakisa yekuchengetedza mvura inoita kuti dhaka rivhurike kwenguva yakareba, uye rine zvakanakira kuvaka-nzvimbo yakakura, hupenyu hurefu hwebasa mubhaketi, uye batch kusanganisa uye kushandisa batch.

2. Kuchengetedza kwemvura kwakanaka kunoita kuti simiti mudhaka izere hydrated, zvinobudirira kuvandudza kushanda kwekubatanidza kwedhaka.

3. Doka rine zvakanakisa kuchengetedza mvura, izvo zvinoita kuti dhaka risanyanya kuparadzaniswa uye kubuda ropa, uye inovandudza kushanda uye kuvakwa kwedhaka.