Dhaka rinoshandiswa zvakanyanya idhaka rekupurasita, dhaka risingachinjiki uye dhaka remasonry.Kusiyana kwavo kunotevera:
Crack resistant mortar:
Icho dhaka rakagadzirwa neanti cracking agent yakagadzirwa nepolymer lotion uye musanganiswa, simende uye jecha mune imwe chikamu, iyo inogona kusangana neimwe deformation uye kuchengetedza isina kuputika.
Iyo crack resistant mortar ndiyo yakapedzwa zvinhu, iyo inogona kushandiswa nekuwedzera mvura uye kusanganisa zvakananga.Iyo yakapedzwa anti crack mortar material ijecha rakanaka, simende uye anti crack agent.Chinhu chikuru cheiyo anti cracking agent imhando ye silica fume, iyo inogona kuzadza pores pakati pemasimende, kuumba gels ine hydration zvigadzirwa, uye kuita nealkaline magnesium oxide kugadzira gels.
Plastering mortar:
Iyo dhaka inoiswa pamusoro pezvivakwa uye zvikamu uye pamusoro pezvigadziko zvepasi, izvo zvinogona kuchengetedza base kosi uye kusangana nezvinodiwa zvekushandisa, zvinogona kunzi pamwe chete sekuisa plastering dhaka (inozivikanwawo se plastering mortar).
Doka masonry:
Iyo yekuwedzera yekuvaka stacking inosanganisira gel zvinhu (kazhinji simende uye lime) uye yakanaka aggregate (kazhinji yakasikwa yakanaka jecha).
Kuchengetedzwa kwemvura (water retention of mortar) zvinoreva kugona kwedhaka kuchengetedza mvura.Doka rine mvura isina kunaka rinowanzobuda ropa uye kupatsanurwa panguva yekufambisa nekuchengetedza, kureva kuti, mvura inoyangarara pamusoro uye jecha nesimende zvinonyura pazasi.Inofanira kusanganiswa zvakare isati yashandiswa.
Ese marudzi ema base courses anoda kuvakwa kwedhaka ane kumwe kunyura kwemvura.Kana kuchengetwa kwemvura kwedhaka kwakashata, mukugadzirwa kwedhaka, chero bedzi iyo yakagadzirira yakasanganiswa dhaka inosangana ne block kana base course, mvura inotorwa neyakagadzirira yakasanganiswa dhaka.Panguva imwecheteyo, mvura inoputika kubva pamusoro pevhu yakatarisana nemhepo, zvichikonzera kusakwana kwemvura yedhaka nekuda kwekurasikirwa kwemvura, zvichikanganisa kuwedzera kwe simenti, zvichikanganisa kuvandudzwa kwesimba rematope, zvichikonzera simba Kunyanya, iyo interface simba pakati pedhaka yakaomeswa muviri uye chigadziko chinova chakaderera, zvichikonzera kuputika kwedhaka nekudonha.Kune iyo dhaka ine yakanaka kuchengetedza mvura, iyo simende hydration yakaringana, simba rinogona kukura zvakajairika, uye rinogona kubatana zvakanaka ne base course.
Nokudaro, kuwedzera kuchengetwa kwemvura kwedhaka hakusi kungogadzirisa kuvaka, asiwo kuwedzera simba.
Nguva yekutumira: May-27-2022