Qhov Sib Txawv Ntawm Cov Khoom Ntxiv Thiab Cov Khoom Sib Xyaws

Qhov Txawv Tseem Ceeb - Cov Khoom Ntxiv vs Cov Khoom Sib Xyaws

Cov khoom ntxiv thiab cov khoom sib xyaw yog cov khoom siv tshuaj uas tau ntxiv rau lwm cov ntaub ntawv kom txhim kho lawv cov tshuaj lom neeg thiab lub cev. Txawm hais tias ob qho tib si yog cov khoom ntxiv rau lwm cov ntaub ntawv, muaj qhov sib txawv ntawm cov khoom ntxiv thiab cov khoom sib xyaw thaum nws los txog rau cov cement thiab cov khoom sib xyaw ua ke. Cov khoom ntxiv tuaj yeem yog cov khoom noj khoom haus ntxiv lossis lwm yam khoom ntxiv rau qee yam hauv qhov ntau me me kom txhim kho lossis khaws cia nws. Cov khoom ntxiv, ntawm qhov tod tes, yog cov khoom ntxiv rau cov khoom sib xyaw ua ke thaum sib tov. Qhov sib txawv tseem ceeb ntawm cov khoom ntxiv thiab cov khoom sib xyaw yog tias cov khoom ntxiv tau ntxiv rau cement thaum lub sijhawm tsim khoom kom tau txais cov khoom tshiab rau cement thaum cov khoom ntxiv tau ntxiv rau cov khoom sib xyaw ua ke thaum sib tov kom tau txais cov khoom tshiab.

Cov Khoom Ntxiv yog dab tsi

Cov tshuaj ntxiv yog cov tshuaj uas ntxiv rau hauv cov cement thaum lub sijhawm tsim khoom kom tau txais cov yam ntxwv tshiab rau cov cement. Cov khoom siv raw siv hauv kev tsim cov cement yog lime, silica, alumina thiab iron oxide. Cov khoom no raug zom ua hmoov zoo thiab sib tov ua ke tom qab ntawd ci. Kev ua kom sov ntawm cov khoom sib tov no txog li 1500oC yuav pib ntau yam tshuaj lom neeg uas muab cov tshuaj sib xyaw ua ke kawg ntawm cov cement.

Yuav kom tau txais cov khoom zoo li xav tau, ntau yam khoom ntxiv rau hauv cov cement thaum lub sijhawm tsim khoom.

Cov khoom siv ua kom nrawm dua
Cov khoom ua kom nrawm dua raug ntxiv los txo lub sijhawm uas cov cement poob thiab kom ua kom lub zog compressive sai dua.

Retarders
Cov tshuaj tiv thaiv ua rau cov cement nyob ntev dua. Qhov no pab cov cement kom muaj sijhawm txaus rau kev muab cov slurry tso rau hauv cov qhov dej tob.

Cov tshuaj dispersants
Cov tshuaj dispersants raug ntxiv los txo qhov viscosity ntawm cov cement slurry thiab kom ntseeg tau tias cov av nkos raug tshem tawm zoo thaum lub sijhawm tso.

Cov Tshuaj Tswj Kev Poob Kua
Cov tshuaj tswj kev poob dej tswj kev poob dej ntawm cov cement mus rau hauv qhov chaw tsim.

Qee cov khoom siv ua kom nrawm ntxiv rau hauv cov cement yog calcium chloride (CaCl2), sodium chloride (NaCl), dej hiav txwv thiab potassium chloride (KCl).

Cov khoom sib xyaw yog dab tsi
Cov tshuaj ntxiv yog cov tshuaj lom neeg uas tau ntxiv rau hauv cov khoom sib xyaw ua ke thaum sib tov kom tau cov yam ntxwv tshiab. Cov tshuaj ntxiv yog cov khoom hauv cov pob zeb sib xyaw uas tsis yog cement, dej thiab aggregates. Cov tshuaj ntxiv raug ntxiv rau hauv cement tam sim ntawd ua ntej lossis thaum lub sijhawm sib tov cov khoom sib xyaw ua ke.

Cov tshuaj ntxiv rau:

-Txhob txwm nkag mus rau hauv huab cua
-Txo qhov xav tau dej
-Ua kom muaj peev xwm ua haujlwm tau zoo dua
- Kho lub sijhawm so
- Kho lub zog

Muaj ntau hom admixtures sib txawv raws li hauv qab no nrog qee qhov piv txwv.

Cov tshuaj admixtures entraining cua - ntsev ntawm cov ntoo resins, qee cov tshuaj ntxuav hluavtaws, ntsev ntawm cov roj av acids
Cov khoom yas
Cov tshuaj sib xyaw ua kom dej tsawg - lignosulfonates, hydroxylated carboxylic acids, thiab lwm yam.
Cov tshuaj sib xyaw ua kom nrawm dua - calcium chloride, sodium thiocyanate, thiab lwm yam.
Cov tshuaj admixtures uas qeeb qeeb - lignin, borax, suab thaj, thiab lwm yam.
Cov tshuaj tiv thaiv kev xeb, thiab lwm yam.

Qhov Sib Txawv Ntawm Cov Khoom Ntxiv Thiab Cov Khoom Sib Xyaws

Kev Txhais Lus
Cov Khoom Ntxiv: Cov khoom ntxiv yog cov khoom siv tshuaj uas ntxiv rau hauv cov cement thaum lub sijhawm tsim khoom kom tau txais cov yam ntxwv tshiab rau cov cement.

Cov Tshuaj Ntxiv: Cov tshuaj ntxiv yog cov khoom siv tshuaj uas tau ntxiv rau cov khoom sib xyaw ua ke thaum sib tov kom tau txais cov khoom tshiab.

Cov Khoom Siv Raw
Cov Khoom Ntxiv: Cov khoom ntxiv raug ntxiv rau cov cement.

Cov khoom sib xyaw: Cov khoom sib xyaw raug ntxiv rau hauv cov pob zeb.

Ntxiv
Cov Khoom Ntxiv: Cov khoom ntxiv raug ntxiv rau cov cement thaum lub sijhawm tsim khoom.

Cov Tshuaj Sib Xyaws: Cov tshuaj sib xyaws raug ntxiv rau hauv cov pob zeb ua ntej lossis thaum lub sijhawm sib tov.

Hom Sib Txawv
Cov Khoom Ntxiv: Cov khoom ntxiv sib txawv raug muab faib ua cov khoom ua kom nrawm dua, cov khoom qeeb dua, cov khoom tawg, cov khoom tswj kev poob kua, thiab lwm yam.

Cov tshuaj ntxiv: Cov tshuaj ntxiv sib txawv yog muab faib ua cov tshuaj ntxiv uas khaws cua, cov tshuaj ntxiv yas, cov tshuaj ntxiv uas txo dej, thiab lwm yam.

Xaus lus
Cov tshuaj ntxiv rau hauv cov cement thaum lub sijhawm tsim khoom. Cov tshuaj ntxiv rau hauv cov pob zeb ua ntej lossis thaum lub sijhawm sib tov. Qhov sib txawv tseem ceeb ntawm cov tshuaj ntxiv thiab cov tshuaj ntxiv yog tias cov tshuaj ntxiv rau hauv cov cement thaum lub sijhawm tsim khoom kom tau txais cov yam ntxwv tshiab rau cov cement thaum cov tshuaj ntxiv rau hauv cov pob zeb thaum sib tov kom tau txais cov yam ntxwv tshiab.