Tej Portland Cement

Ordinary Portland cement yog cov khoom siv hydraulic cementitious ua los ntawm Portland cement clinker, 5% -20% cov khoom sib xyaw thiab cov khoom tsim nyog ntawm gypsum hauv av zoo. Nws muaj cov yam ntxwv ntawm lub zog siab, siab hydration thaum tshav kub kub, zoo Frost tsis kam, qhuav shrinkage, zoo hnav tsis kam, zoo carbonization tsis kam, tsis zoo corrosion kuj thiab kub tsis kam.

● Lub zog muaj zog

Ordinary Portland cement hydration cov tshuaj tiv thaiv ceev ceev, thaum ntxov thiab lig zog yog siab. Siv cov cam khwb cia hauv qhov chaw ua vaj tse, kab teeb, kab, precast qhob Cheebtsam. Nws kuj tseem siv tau rau cov pob zeb prestressed, siab zog pob zeb ua haujlwm.

● High hydration thaum tshav kub kub thiab zoo khov tsis kam

Vim tias cov tshuaj tiv thaiv dej ntawm Portland cement zoo tib yam yog ceev, cov ntsiab lus ntawm tricalcium silicate thiab dicalcium silicate yog siab, yog li ntawd, hydration tshav kub yog loj, uas yog conducive rau lub caij ntuj no kev tsim kho. Txawm li cas los xij, vim qhov kub ntawm cov dej loj, hauv kev tsim kho ntawm cov pob zeb loj loj (feem ntau yog hais txog qhov ntev, qhov dav thiab qhov siab ntawm ntau tshaj 1m, nws yog ib qho yooj yim los sib sau ua ke cov cua sov loj hauv cov pob zeb, ua rau sab hauv thiab Sab nraud qhov sib txawv ntawm qhov kub thiab txias, ua rau kev puas tsuaj ntawm cov pob zeb, yog li ntawd, nws tsis haum rau cov pob zeb loj loj Ordinary Portland cement qauv yog ntom thiab muaj kev tiv thaiv zoo Frost thawing nyob rau hauv qhov chaw txias heev thiab tej yaam num uas yuav tsum tau muaj Frost tsis kam, xws li dams overflow nto thiab pob zeb pavement tej yaam num.

● Qhuav shrinkage, zoo hnav tsis kam

Ordinary Portland cement qhuav shrinkage thaum hardening, tsis yooj yim los tsim qhuav shrinkage tawg. Yuav siv tau nyob rau hauv qhuav ib puag ncig engineering. Vim yog qhuav shrinkage, qhov saum npoo tsis yooj yim rau hmoov, yog li kev hnav tsis kam yog qhov zoo, tuaj yeem siv rau hauv kev tsim vaj tsev.

● Zoo carbonization tsis kam

Tom qab qhov zoo tib yam Portland cement yog hydrated, cov cement pob zeb muaj ntau cov calcium hydroxide, alkalinity ntawm cov cement txo qis thaum lub sij hawm carbonization, thiab kev tiv thaiv ntawm steel bar muaj zog, uas yuav siv tau nyob rau hauv ib puag ncig nrog siab concentration ntawm carbon. dioxide nyob rau hauv cov huab cua, xws li kev kho cua sov rhiav.

● Tsis zoo corrosion kuj

Ordinary Portland cement tom qab hydration, muaj ntau ntawm calcium hydroxide thiab calcium aluminate hydrate, yog li ntawd, nws cov dej tsis kam thiab tshuaj corrosion kuj tsis zoo, tsis tuaj yeem siv rau qhov chaw nres nkoj engineering, sulfate kuj project.

● Kev kub siab tsis kam

Thaum lub pob zeb cement nyob ntawm qhov kub siab tshaj 250-300 degrees Celsius, hydrated calcium silicate nyob rau hauv cov cement pob zeb pib dehydrate, thiab calcium hydroxide yuav decompose rau hauv calcium oxide thiab carbon dioxide ntawm ntau tshaj 600 degrees Celsius. Thaum cov cement pob zeb ntub dej tom qab kub kub, cov calcium oxide generated yuav cuam tshuam nrog dej thiab nthuav lub ntim, uas ua rau kev puas tsuaj ntawm cov cement pob zeb. Ordinary Portland cement tsis haum rau cov pob zeb ua haujlwm nrog qhov kub siab tshaj 250 degrees Celsius, xws li cov kilns thiab cov hauv paus kub kub.

A. Ceev ceev thiab hardening, siab thaum ntxov zog thiab lig zog, haum rau cov pob zeb uas yuav tsum tau muaj zog thaum ntxov, lub caij ntuj no kev tsim kho pob zeb, siab zog pob zeb thiab prestressed pob zeb tej yaam num ntawm tseem ceeb saum toj no-av thiab underground lug.

B. Zoo Frost tsis kam, haum rau cov pob zeb ua haujlwm uas raug kev txom nyem rov qab khov-thaw cycles nyob rau hauv thaj tsam ntawm cov dej theem nce thiab poob hauv qhov chaw txias.

C. Kev ywg dej kub yog qhov loj, tsis haum rau cov phiaj xwm loj, tab sis tuaj yeem siv rau lub caij ntuj sov lossis lub caij ntuj no.

D. Tsis zoo corrosion kuj, yuav tsum tsis txhob siv rau tej yaam num uas feem ntau nyob rau hauv kev sib cuag nrog corrosive media xws li ntws dej tshiab los yog sulfate, thiab yuav tsum tsis txhob siv rau tej yaam num uas feem ntau nyob rau hauv kev sib cuag nrog corrosive media xws li seawater thiab mineral dej.

E. Cov cua sov tsis zoo, tsis haum rau cov phiaj xwm ua vaj tse uas yuav tsum tau ua kom sov.

F. Zoo carbonization tsis kam, haum rau ib puag ncig nrog siab CO2 concentration hauv huab cua, xws li kev cob qhia casting.

G. Kev txo kom qhuav, tuaj yeem siv rau hauv qhov chaw qhuav ntawm kev ua vaj tse pob zeb.

H. Zoo hnav tsis kam, tuaj yeem siv rau txoj kev thiab hauv av engineering.

1 ~ 2kg / m²

Cim npe nrov: Tuam Tshoj bulk portland cement manufacturers, lwm tus neeg, Hoobkas