Cov Admixtures yog dab tsi thiab Cov Admixtures Sib Txawv yog dab tsi?

Cov tshuaj ntxiv yog ib pawg ntawm cov khoom siv ntxiv rau hauv cov pob zeb ua vaj tse, cov av nplaum, lossis cov grout thaum lub sijhawm sib tov los hloov kho lawv cov khoom lossis txhim kho lawv cov kev ua tau zoo. Cov ntaub ntawv no txawv ntawm cov khoom xyaw tseem ceeb ntawm cov pob zeb ua vaj tse (cement, aggregates, dej) thiab siv me me kom ua tiav cov txiaj ntsig xav tau. Cov tshuaj ntxiv tuaj yeem hloov pauv ntau yam khoom ntawm cov pob zeb ua vaj tse, suav nrog kev ua haujlwm tau zoo, lub sijhawm teeb tsa, lub zog, kev ruaj khov, thiab kev tiv thaiv rau cov yam ntxwv ib puag ncig. Lawv muab kev ywj pheej hauv kev tsim cov pob zeb ua vaj tse, tso cai rau cov engineers thiab cov neeg tsim kho kom kho cov qauv pob zeb ua vaj tse kom ua tau raws li cov kev xav tau tshwj xeeb ntawm qhov project. Nov yog ntau hom tshuaj ntxiv uas feem ntau siv hauv kev tsim kho:

1. Cov Tshuaj Sib Xyaws Txo Dej (Cov Yas lossis Cov Tshuaj Superplasticizers):

• Cov tshuaj ntxiv uas txo cov dej yog cov tshuaj ntxiv uas txo cov dej uas xav tau rau qhov kev poob ntawm cov pob zeb yam tsis muaj kev cuam tshuam rau nws txoj kev ua haujlwm. Lawv txhim kho qhov ntws thiab kev ua haujlwm ntawm cov khoom sib xyaw ua ke, ua rau yooj yim dua rau kev tso thiab kev sib zog. Cov tshuaj plasticizers feem ntau siv rau hauv cov pob zeb nrog lub sijhawm teeb tsa ib txwm muaj, thaum cov tshuaj superplasticizers siv rau hauv cov pob zeb uas xav tau lub sijhawm teeb tsa ntev.

2. Cov tshuaj sib xyaw ua kom qeeb:

• Cov tshuaj admixtures qeeb qeeb lub sijhawm teeb tsa ntawm cov pob zeb, mortar, lossis grout, ua rau nws siv tau ntev thiab siv tau ntev. Lawv muaj txiaj ntsig zoo rau cov huab cua kub lossis rau cov haujlwm loj uas yuav tsum tau ncua sijhawm thauj mus los, kev teeb tsa, lossis kev ua tiav.

3. Cov Khoom Sib Xyaws Ua Kom Sai Dua:

• Cov tshuaj sib xyaw ua kom nrawm dua ua rau cov pob zeb ua vaj tse, cov xuab zeb, lossis cov grout khov sai dua thiab ua rau kev tsim kho sai dua thiab tshem tawm cov formwork thaum ntxov. Lawv feem ntau siv rau hauv huab cua txias lossis thaum xav tau lub zog sai.

4. Cov Khoom Siv Ua Pa:

• Cov tshuaj admixture uas muaj cua nkag ua rau cov npuas me me rau hauv cov pob zeb lossis cov mortar, ua kom nws tiv taus cov voj voog khov-thaw, scaling, thiab abrasion. Lawv ua kom cov pob zeb ua haujlwm tau zoo thiab ruaj khov hauv huab cua hnyav thiab txo qhov kev pheej hmoo ntawm kev puas tsuaj los ntawm kev hloov pauv kub.

5. Tiv thaiv cov khoom sib xyaw ua ke uas nkag mus rau hauv huab cua:

• Cov tshuaj admixtures uas tiv thaiv cua nkag ua ke muab cov yam ntxwv ntawm cov tshuaj admixtures uas tiv thaiv thiab tiv thaiv cua nkag ua ke, ncua lub sijhawm teeb tsa ntawm cov pob zeb thaum tseem tiv thaiv cua kom txhim kho nws txoj kev tiv thaiv khov-yaj. Lawv feem ntau siv rau hauv huab cua txias lossis rau cov pob zeb uas raug rau lub voj voog khov thiab yaj.

6. Cov tshuaj sib xyaw ua kom tsis txhob xeb:

• Cov tshuaj admixtures uas tiv thaiv kev xeb tiv thaiv cov hlau reinforcement uas muab tso rau hauv cov pob zeb los ntawm kev xeb los ntawm kev raug dej noo, chlorides, lossis lwm yam tshuaj lom neeg. Lawv ua rau lub neej ua haujlwm ntawm cov qauv pob zeb ntev dua thiab txo cov nqi kho thiab kho.

7. Cov Tshuaj Sib Xyaws Txo Qhov Ntsws:

• Cov tshuaj sib xyaw ua kom txo qhov ntsws txo qhov qhuav ntawm cov pob zeb ua vaj tse, txo qhov kev pheej hmoo ntawm kev tawg thiab txhim kho kev ruaj khov mus sij hawm ntev. Lawv muaj txiaj ntsig zoo rau kev tso cov pob zeb loj, cov khoom ua ntej, thiab cov khoom sib xyaw ua ke zoo.

8. Cov tshuaj tiv thaiv dej:

• Cov tshuaj sib xyaw ua ke tiv thaiv dej ua rau cov pob zeb tsis nkag tau zoo, txo cov dej nkag mus thiab tiv thaiv cov teeb meem ntsig txog dej xws li kev tawg paj, av noo, thiab xeb. Lawv feem ntau siv rau hauv cov qauv hauv qab qib, qab nthab, qhov av, thiab cov qauv khaws dej.

9. Cov Khoom Siv Xim:

• Cov tshuaj ntxiv xim rau hauv cov pob zeb ua vaj tse kom muaj xim lossis ua kom zoo nkauj. Lawv muaj ntau hom, suav nrog cov xim, cov xim pleev xim, cov xim zas, thiab cov tshuaj zas xim, uas tso cai rau kev hloov kho cov nto ntawm cov pob zeb ua vaj tse kom phim cov qauv tsim.

10. Rheology-Hloov Kho Cov Khoom Sib Xyaws:

• Cov tshuaj admixtures uas hloov kho qhov rheology hloov cov dej ntws thiab cov khoom rheological ntawm cov pob zeb ua vaj tse, mortar, lossis grout kom txhim kho kev ua haujlwm tau zoo, kev twj tau zoo, lossis kev tswj viscosity. Lawv feem ntau siv rau hauv cov pob zeb ua vaj tse uas sib sau ua ke, shotcrete, thiab cov khoom sib xyaw ua ke zoo.

Cov no yog qee hom tshuaj sib xyaw tseem ceeb uas siv rau hauv kev tsim kho, txhua yam muaj cov txiaj ntsig thiab kev siv tshwj xeeb rau kev ua kom cov pob zeb ua haujlwm tau zoo thiab ua tau raws li cov kev xav tau ntawm qhov project. Nws yog ib qho tseem ceeb uas yuav tsum xaiv thiab siv cov tshuaj sib xyaw kom haum raws li cov lus qhia ntawm qhov project, cov xwm txheej ib puag ncig, thiab cov qauv kev ua tau zoo.