RDP yedhaka rakaoma rakasanganiswa

Dry yakasanganiswa dhaka imhando ye granular uye powdery musanganiswa weiyo yakanaka aggregate uye inorganic simende zvinhu, inochengeta mvura inokora zvinhu, inoderedza mvura, anti-kuparuka agent, defoaming agent uye zvimwe zvinowedzera zvakasanganiswa zvakaenzana mune imwe chikamu. Inotakurwa kuenda kunzvimbo yacho nerori chaiyo yetangi kana bhegi repepa rakavharwa risina mvura, uye rakasanganiswa nemvura. Iye zvino mukuwedzera kune simende nejecha muhuwandu hukuru hwevhu rakaoma rakasanganiswa dhaka, huwandu hwezvimwe hunodzokororwa redispersible.polymer poda RDP. Nekuda kwemutengo wayo wepamusoro uye pesvedzero huru pazvinhu zvedhaka, ndiyo inotariswa nevanhu. Pesvedzero yezve dispersiblepolymer poda RDPpamusoro pezvinhu zvedhaka zvakakurukurwa mubepa rino.

1 Test Method

Kuitira kuona pesvedzero redispersiblepolymer poda RDPZvemukati pane polymer dhaka zvivakwa, Mapoka akati wandei ekuumbwa akagadzirwa ne orthogonal bvunzo nzira uye akaedzwa zvinoenderana dbjoi-63-2002, iyo mhando Yekuongorora Standard yepolymer Mortar yeKunze kuisirwa kwekunze kwemadziro ekunze, kuona pesvedzero yepolymer dhaka pane tensile. kusimba kwechisungo, kumanikidza shear bond simba uye kusimba kwesimba, flexural simba uye flexural ratio yepolymer mortar pane kongiri.

Iyo huru mbishi zvinhu ndeye P-04 2.5-pu silicon simende; RE5044 uye R1551Z inogona kuparadzirwa zvakare uye kuparadzirwa zvakare emulsion powder; 70-140 mesh quartz jecha; Zvimwe zvinowedzera.

2 Pesvedzero yezve dispersiblepolymer poda RDPpamusoro pezvinhu zvepolymer mortar

2.1 Tensile bond uye compression shear bond zvivakwa

Nekuwedzera kwezve kudhispersiblepolymer poda RDPzvemukati, iyo tensile bond simba uye compressive shear bond simba repolymer dhaka nesamende dhaka rinowedzerawo, uye macurves mashanu anokwira achienderana nekuwedzera kwesemende zvirimo. Ese akakodzera mapoinzi akaremerwa avhareji, asi kuongororwa kwehuwandu kunogona kuparadzirwa emulsion poda yemukati pane dhigirii resimba resamende dhaka rekuita rinogona kuona kuti nekuwedzera reusable yakaparadzirwa emulsion poda yemukati pane bonding simba resimende dhaka, polymer dhaka compressive shear simba. mutsara wekukura maitiro, maitiro ese ekuwedzera kwe1% kupararirapolymer poda RDP, simba rekubatanidza rakawedzera ne 0.2 MPa, Compression shear bond simba rakawedzera ne 0.45MPA.

2.2 Inodzvanya/kukotama zvimiro zvedhaka pachayo

Nekuwedzera kwezviri mukati redispersiblepolymer poda RDP, kusimba kwesimba uye kuchinjika kwesimba repolymer dhaka kuderera, zvichiratidza kuti iyo polima ine chinotadzisa hydration ye simenti. FIG. 4 inoratidza pesvedzero yezvinoparadzika zvakarepolymer poda RDPzvemukati pane kumanikidza uye kupeta reshiyo yepolymer mortar. , nekuwedzera kwezviri mukati redispersiblepolymer poda RDP, iyo self-compression ratio yepolymer mortar inodzikira, zvichiratidza kuti polima inovandudza kuoma kwedhaka. Iko kurudziro yezviri mukati redispersiblepolymer poda RDPpakuita kwepolymer dhaka inogona kuongororwa zvakanyanya neavhareji yakayerwa yeimwe neimwe poindi yekubatanidza. Nekuwedzera kwezviri mukati redispersiblepolymer poda RDP, iyo yekumanikidza simba, flexural simba uye flexural ratio yepolymer mortar inoratidza mutsara uri kudzikira maitiro. Iyo yekumanikidza simba, flexural simba uye flexural reshiyo yezve dispersiblepolymer poda RDPyakadzikira ne1.21 MPa, 0.14MPa uye 0.18 pa1%. Izvo zvinogona zvakare kuoneka kuti nekuda kwekuwedzera kwehuwandu hwekudhindwapolymer poda RDP, kushanduka kwedhaka kwakagadziridzwa.

2.3 Kuongororwa kwehuwandu hwesimba resimende-jecha reshiyo pane zvivakwa zvepolymer mortar

Mune polymer dhaka, iyo simende-jecha reshiyo uye inodhindwa zvakarepolymer poda RDPzvemukati zvinodyidzana zvakanangana, saka zvinodikanwa kukurukura pesvedzero yesamende-jecha reshiyo zvakasiyana. Zvinoenderana ne orthogonal yekuyedza data yekugadzirisa nzira ichave yakasiyana mutsauko sezvimiro, kuparadzira kunogona kusanganiswa neiyopolymer poda RDPzvemukati sechinhu chinogara chiri chinhu chinokwevera mutsauko pakukanganisa kweshanduko padhaka rehuwandu hwehuwandu, unogona kuona kuti nekuwedzera kwekusiyana kwekuita kwesimende dhaka repolymer dhaka uye dhaka repolymer dhaka pacharo riri kuderera mutsara maitiro. kusimba kwechisungo chepolymer dhaka kune simende dhaka chinodzikira ne0.12MPa, iyo compressive shear bond simba inodzikira ne0.37MPa, iyo inomanikidza simba. yepolymer dhaka inodzikira ne 4.14MPa, iyo flexural simba inodzikira ne 0.72MPa, uye flexural ratio inoderera ne 0.270 nekuwedzera kwega kwese simende-jecha reshiyo.

3 Pesvedzero yezvinoparadzirwa zvakarepolymer poda RDPpane tensile bonding pakati pepolymer mortar neEPS foam polystyrene board DB JoI-63-2002 yakajairwa inokurudzira kuti kusungirirwa kwepolymer dhaka kudhaka resimende uye EPS board inopokana.

Iyo yekutanga inoda polymer dhaka kuti ive yakaoma, nepo iyo yekupedzisira ichida kuti kuchinjika kwayo kuve kwakakwira, asi tichifunga nezvekunze kweinjiniya yekudzivirira zvese kunamatira madziro akasimba uye inoshanduka EPS board, panguva imwe chete kuona kuti mutengo hauna kunyanya kukwira. Naizvozvo, pesvedzero yezviri mukati redispersiblepolymer poda RDPpane inochinjika yekubatanidza pfuma yepolymer mortar yakanyorwa zvakasiyana kusimbisa kukosha kwayo.

4Pesvedzero yemhando dzezvidzoredzikepolymer poda RDPpakusimba kwekubatana kweEPS board

R5,C1,P23 marudzi eanoraswa zvakarepolymer poda RDPvakasarudzwa kubva kunze kwenyika. Taiwan D2,D4 2 mhando; Domestic S1, S2 2 marudzi 7 marudzi; Polystyrene board yakagadzirwa muBeijing 18kg / yakamisikidzwa EPS bhodhi. Zvinoenderana nedbJ01-63-2002 chiyero, iyo yakatambanudzwa chisungo chinodzokororwapolymer poda RDPyeEPS board inogona kusangana neyakaomarara uye inochinjika tensile bond performance zvinodiwa zvepolymer mortar panguva imwe chete.