Mortar yog ib qho tseem ceeb hauv kev tsim kho thiab feem ntau yog siv los khi lub tsev blocks xws li cib, pob zeb thiab pob zeb ua vaj tse. HPMC (Hydroxypropylmethylcellulose) yog cov organic compound siv los ua ib qho ntxiv hauv cov cement thiab mortar formulations. Nyob rau hauv xyoo tas los no, HPMC tau loj hlob nyob rau hauv muaj koob meej raws li ib tug tshuaj admixture nyob rau hauv mortars thiab pob zeb. HPMC muaj ntau yam khoom zoo uas ua rau nws xaiv zoo rau ntau yam khoom siv hauv tsev. Kab lus no yuav tham txog kev txhim kho cov txiaj ntsig ntawm HPMC mortar ntawm pob zeb.
Kev ua haujlwm ntawm HPMC Mortar
HPMC mortar muaj ntau yam khoom zoo heev thiab tau pom zoo ua cov tshuaj sib xyaw hauv cov khoom siv hauv tsev. HPMC yog cov dej-soluble polymer thiab yuav tsis hnov mob lossis sib txuas nrog lwm cov ntaub ntawv hauv kev sib xyaw. Cov cuab yeej no ua rau kom cov plasticity thiab workability ntawm lub mortar, ua kom yooj yim rau kev lis thiab siv. HPMC muaj adhesion zoo rau ntau qhov chaw, uas muaj txiaj ntsig zoo rau kev txhim kho cov kav ntev thiab lub zog ntawm mortar. HPMC tswj cov txheej txheem hydration ntawm pob zeb thiab mortar. Cov cuab yeej no tso cai rau HPMC siv los tswj lub sijhawm teeb tsa ntawm mortars thiab txhim kho lub zog kawg ntawm mortars.
Kev txhim kho nyhuv ntawm HPMC Mortar rau pob zeb
Ntxiv HPMC rau pob zeb muaj ntau yam txiaj ntsig rau qhov kawg ntawm lub zog thiab kav ntev ntawm cov pob zeb. HPMC txo cov dej-cement piv, yog li txo cov porosity ntawm pob zeb thiab ua kom nws lub zog. Cov cuab yeej no ua rau cov khoom ua vaj tse zaum kawg nyuaj dua thiab tiv taus cov khoom sab nraud xws li huab cua thiab tshuaj tua kab mob. HPMC nce cov yas ntawm cov tshuaj khib, yog li txhim kho qhov ua haujlwm kawg ntawm cov pob zeb thiab txhim kho cov txheej txheem nchuav. Qhov kev ua haujlwm ntxiv uas tau muab los ntawm HPMC kuj ua kom muaj kev pabcuam zoo dua ntawm kev txhawb nqa hauv pob zeb.
HPMC txo cov cua nkag hauv cov pob zeb, yog li txo qhov pom ntawm qhov hws thiab qhov khoob ntawm cov khoom kawg. Los ntawm kev txo tus naj npawb ntawm cov pores, lub zog compressive ntawm cov pob zeb yog nce, ua rau nws ruaj khov thiab ruaj khov. Plaub, HPMC txhim kho pob zeb hydration vim nws qhov chaw thiab thickening zog. Kev txhim kho hydration ntawm pob zeb txhais tau tias muaj zog dua thiab ua haujlwm ntev hauv cov khoom kawg, tso cai rau nws tiv taus cov khoom hnyav sab nraud.
HPMC pab tiv thaiv kev sib cais. Segregation yog cov txheej txheem uas cov khoom vaj khoom tsev sib cais los ntawm ib leeg vim lawv lub cev. Qhov tshwm sim ntawm kev sib cais txo qhov kawg ntawm cov pob zeb zoo thiab txo nws lub zog. Qhov sib ntxiv ntawm HPMC rau cov pob zeb sib xyaw ua kom muaj kev sib txuas ntawm cov khoom sib xyaw ntawm cov pob zeb sib xyaw, yog li tiv thaiv kev sib cais.
HPMC mortar plays lub luag haujlwm tseem ceeb hauv kev txhim kho qhov kawg ntawm lub zog, ua haujlwm ntev thiab ua haujlwm ntawm pob zeb. Cov txiaj ntsig ntawm HPMC hauv cov khoom siv hauv tsev tau lees paub dav thiab tau coj mus rau lawv cov kev siv dav hauv kev tsim kho. Cov khoom zoo heev ntawm HPMC ua rau nws pom zoo ua cov tshuaj lom neeg hauv cov tshuaj khib nyiab thiab cov ntawv ua vaj tse. Cov neeg tsim khoom yuav tsum ua qhov tseem ceeb ntawm kev siv HPMC mortars hauv lawv cov phiaj xwm tsim kho kom muaj zog thiab ua kom muaj zog ntawm cov qauv kawg.
Post lub sij hawm: Aug-10-2023