Redispersible latex poda inogona kuvandudza zvimiro zvedhaka senge flexural simba uye kusimba kwekunamatira, nekuti inogona kugadzira polymer firimu pamusoro pevhu zvidimbu.Iko kune pores pamusoro pefirimu, uye pamusoro pemapores izere nedhaka, iyo inoderedza kushushikana kwepfungwa.Uye pasi pekuita kwesimba rekunze, inoburitsa kuzorora pasina kutyora.Pamusoro pezvo, dhaka rinoumba skeleton yakaoma mushure mekunge simenti yanyoroveswa, uye iyo polymer iri muskeleton ine basa rekubatana rinofamba, iro rakafanana nenyama yemuviri wemunhu.Iyo membrane inoumbwa nepolymer inogona kufananidzwa nemajoini nemarunda, kuitira kuti ive nechokwadi chekusimba uye kuchinjika kweakaomarara skeleton.kuoma.
Mune iyo polymer-yakagadziridzwa simende dhaka sisitimu, inoenderera uye yakazara yepolymer firimu inorukwa nesamende paste uye jecha zvidimbu, zvichiita kuti dhaka rose rive rakatsetseka uye denser, uye panguva imwechete ichiita iyo yese elastic network nekuzadza capillaries nemakomba.Naizvozvo, iyo polymer firimu inogona kunyatso fambisa kudzvanywa uye elastic tension.Iyo firimu repolymer rinogona kubhuroka kutsemuka kwe shrinkage papolymer-mortar interface, kuporesa kutsemuka kwakatsemuka, uye kugadzirisa chisimbiso uye kusimba kwakabatana kwedhaka.Kuvepo kweakanyanya kuchinjika uye akanyanya elastic polymer domains inovandudza kuchinjika uye elasticity yedhaka, ichipa kubatana uye ine simba maitiro kune yakaoma skeleton.Kana simba rekunze rikaiswa, iyo microcrack propagation process inononoka nekuda kwekuvandudzwa kuchinjika uye elasticity kusvika kushushikana kwakanyanya kwasvika.Iwo interwoven polymer domains anoitawo sechipinganidzo kukubatana kwe microcracks mumitswe inopinza.Naizvozvo, iyo redispersible polymer poda inovandudza kutadza kushushikana uye kutadza dhizaini yechinhu.
Kuwedzera latex poda kune simende dhaka inogadzira yakanyanya kuchinjika uye elastic polymer network firimu, iyo inozovandudza zvakanyanya kushanda kwedhaka, kunyanya kusimba kwedhaka kuchavandudzwa zvakanyanya.Kana simba rekunze rinoshandiswa, nekuda kwekuvandudzwa kwekubatana kwese kwedhaka uye kunyorova kwepolymer, kuitika kwe micro-cracks kuchagadziriswa kana kuderera.Kuburikidza nekushanda kwe latexr powder content pamusoro pesimba rehuputi hwehutu hunopisa, zvinowanikwa kuti simba rehutano hwehuputi hwehutu hunopisa hunowedzera nekuwedzera kwe latex powder content;iyo flexural simba uye simba rekumanikidzika rine imwe dhigirii nekuwedzera kwe latex powder content.Iyo dhigirii yekuderera, asi ichiri kusangana nezvinodiwa zvemadziro ekunze kupera.
Iyo simende dhaka yakasanganiswa nelatex poda, iyo 28d yekubatanidza simba inowedzera nekuwedzera kwelatex hupfu hwemukati.Nekuwedzera kweiyo latex poda yemukati, kugona kwekubatanidza kwesamende dhaka uye yekare simende kongiri pamusoro inovandudzwa, iyo inova nechokwadi chezvakanakira kugadzirisa simende kongiri pavement uye zvimwe zvimiro.Uyezve, chiyero chekupeta chedhaka chinowedzera nekuwedzera kwe latex powder content, uye kushanduka kwepasi pevhu kunovandudza.Panguva imwecheteyo, yakawanikwawo kuti nekuwedzera kwe latex powder content, elastic modulus yematope yakaderera kutanga uye yakawedzera.Pakazara, nekuwedzera kweash accumulation ratio, iyo elastic modulus uye deformation modulus yedhaka yakadzikira pane iyo yakajairika dhaka.
Nguva yekutumira: Mar-14-2023