Txhim kho pob zeb nrog Additives

Txhim kho pob zeb nrog cov additives suav nrog ntau yam tshuaj thiab cov ntxhia ntxiv rau hauv cov pob zeb sib xyaw kom txhim kho cov khoom tshwj xeeb lossis cov yam ntxwv ntawm cov pob zeb tawv tawv. Nov yog ob peb hom additives feem ntau siv los txhim kho pob zeb:

1. Dej-txo Admixtures (Plasticizers):
   • Cov dej txo qis, tseem hu ua plasticizers lossis superplasticizers, txhim kho kev ua haujlwm los ntawm kev txo cov dej xav tau hauv cov pob zeb sib xyaw. Lawv pab ua kom poob qis, txo kev sib cais, thiab txhim kho cov dej ntws ntawm cov pob zeb yam tsis muaj kev cuam tshuam lub zog.
2. Teem Retarding Admixtures:
   • Teem retarding admixtures yog siv los ncua lub sijhawm teem sijhawm ntawm kev ua vaj tse, tso cai rau kev ua haujlwm ntev thiab sijhawm tso kawm. Lawv muaj txiaj ntsig tshwj xeeb hauv cov huab cua kub lossis rau cov haujlwm loj uas yuav tsum muaj kev thauj mus los ntev thiab sijhawm tso kawm.
3. Teem Accelerating Admixtures:
   • Teem accelerating admixtures yog siv los ua kom lub sijhawm teem sijhawm ntawm kev ua vaj tse, txo lub sijhawm tsim kho thiab ua kom nrawm dua formwork tshem tawm thiab ua tiav. Lawv tau txais txiaj ntsig zoo hauv cov huab cua txias lossis thaum xav tau lub zog nce sai.
4. Air-Entraining Admixtures:
   • Air-entraining admixtures yog ntxiv rau cov pob zeb ua kom pom cov pa hauv microscopic hauv kev sib xyaw, uas txhim kho khov-thaw tsis kam thiab ua haujlwm ntev. Lawv txhim kho kev ua haujlwm thiab kev sib koom ua ke ntawm cov pob zeb, tshwj xeeb tshaj yog nyob rau hauv huab cua hnyav.
5. Pozzolans:
   • Pozzolanic cov ntaub ntawv xws li ya tshauv, silica fume, thiab slag yog cov ntxhia ntxiv uas hnov ​​​​mob nrog calcium hydroxide hauv cov cement los tsim cov cementitious ntxiv. Lawv txhim kho lub zog, durability, thiab tsis kam mus rau tshuaj tua kab mob thiab txo cov cua sov ntawm hydration.
6. Fibers:
   • Fiber additives, xws li hlau, hluavtaws (polypropylene, nylon), los yog iav fibers, yog siv los txhim kho tensile lub zog, tej yam kuj, thiab toughness ntawm pob zeb. Lawv pab tswj kev tawg thiab txhim kho durability nyob rau hauv cov txheej txheem thiab tsis-structural daim ntaub ntawv.
7. Shrinkage-Reduction Admixtures:
   • Shrinkage-txo admixtures yog siv los txo kom qhuav shrinkage hauv pob zeb, txo qhov kev pheej hmoo ntawm kev tawg thiab txhim kho lub sijhawm ntev. Lawv ua haujlwm los ntawm kev txo qhov nro ntawm cov dej hauv cov pob zeb sib xyaw.
8. Corrosion Inhibitors:
   • Corrosion inhibitors yog cov tshuaj additives uas tiv thaiv cov pob zeb ua kom muaj zog los ntawm kev xeb los ntawm chloride ions, carbonation, lossis lwm yam khoom hnyav. Lawv pab txuas ntxiv kev pab cuam lub neej ntawm pob zeb hauv marine, industrial, lossis kev loj ib puag ncig.
9. Coloring Agents:
   • Cov tshuaj pleev xim, xws li hlau oxide pigments lossis hluavtaws dyes, yog siv los ntxiv cov xim rau pob zeb rau kev kho kom zoo nkauj lossis zoo nkauj. Lawv txhim kho qhov pom kev pom ntawm cov pob zeb pob zeb hauv kev siv architectural thiab landscaping.

Los ntawm kev sib xyaw cov khoom ntxiv rau hauv cov khoom sib xyaw ua ke, cov kws tsim khoom thiab cov neeg cog lus tuaj yeem kho cov khoom ntawm cov pob zeb kom tau raws li cov kev xav tau tshwj xeeb thiab ua tiav cov yam ntxwv uas xav tau, xws li lub zog, durability, workability, thiab tsos.