Fly Ash ua lub luag haujlwm tseem ceeb hauv pob zeb

1. Cov yam ntxwv tseem ceeb ntawm ya tshauv

Cov yam ntxwv ntawm ya tshauv feem ntau yog hais txog kev ua haujlwm ntawm ya tshauv, uas tuaj yeem muab faib ua ob yam: chemical kev ua si thiab lub cev ua si.

Lub cev kev ua si ntawm ya tshauv muaj xws li cov micro-daim ntawv ntawm ya tshauv thiab cov nyhuv ntawm aggregate, uas tsis muaj dab tsi ua nrog cov khoom siv tshuaj lom neeg ntawm ya tshauv. Nws tuaj yeem txhim kho kev ua haujlwm cementing ntawm cov khoom ua vaj tse thiab txhim kho kev ua haujlwm ntawm cov khoom ua vaj tse (xws li hnav tsis kam, zog, permeability kuj, lwm.).Lub cev kev ua si ntawm ya tshauv yog lub ntsiab qhov chaw ntawm ya tshauv pre-activity.Cov nyhuv ntawm ya tshauv morphology yog mas manifested nyob rau hauv lub faib ntawm ya tshauv particle loj, particle morphology thiab lwm yam ntxwv tuaj yeem ua lub luag haujlwm hauv kev txhim kho cov filling thiab lubrication ntawm cov khoom siv cement.

Cov kev ua ub no ntawm ya tshauv yog hais txog cov soluble Cheebtsam ntawm ya tshauv teb chemically nrog dej thiab limestone nyob rau hauv chav tsev kub los tsim cov gel ntawm calcium silicate aluminate hydrate thiab calcium silicate hydrate, thiab tom qab ntawd ua kom nws tawv hauv huab cua lossis dej thiab tshwm sim muaj zog zog.Fly tshauv kev ua haujlwm feem ntau yog los ntawm hydration ntawm Al2O3 thiab Si02 nyob rau hauv alkaline tej yam kev mob..

2.Cov nyhuv ntawm ya tshauv hauv pob zeb

(1) Txo qhov kub nce

Ntawm hydration cov tshuaj tiv thaiv ntawm cement yog exothermic cov tshuaj tiv thaiv, 1 kg muab tawm cua sov lub hydration ntawm cement tuaj yeem ncav cuag 500 j, vim tsis zoo thermal conductivity ntawm pob zeb, nws sab hauv hydration cov tshuaj tiv thaiv ntawm hydration tshav kub tsub zuj zuj mob, ua rau kom kub ceev nce, tab sis nws qhov kub thiab txias yog qis dua, qhov sib txawv ntawm sab hauv thiab sab nraud, nyob rau hauv lub pob zeb tensile kev nyuaj siab, lub tensile kev nyuaj siab tuaj yeem tshaj lub pob zeb tensile zog, nrog rau lub sijhawm, lub pob zeb sab hauv kub poob, zoo li yuav tshwm sim dua tensile kev nyuaj siab, qhov no tuaj yeem ua rau pob zeb tawg.Qhov no muaj feem xyuam rau qhov kub thiab txias ntawm cov dej hauv cov dej kub tso tawm, uas tuaj yeem tiv thaiv kev tawg ntawm pob zeb los ntawm kev txwv qhov kub ntawm qhov siab tshaj qhov kub ntawm qhov nce ntawm pob zeb.

(2) Txhim kho kev ua haujlwm ntawm cov pob zeb tshiab

Fly tshauv tuaj yeem txhim kho kev ua haujlwm ntawm cov pob zeb tshiab los ntawm kev txo cov dej siv ntawm cov pob zeb thaum nws muaj qhov fluidity ib yam li cov pob zeb zoo tib yam.Qhov kev txo qis ntawm cov dej siv tau yooj yim rau kev txhim kho cov kev ua haujlwm ntawm cov pob zeb tshiab thiab txo qhov tshwm sim ntawm shrinkage tawg nyob rau hauv hardened ya tshauv pob zeb., nws tuaj yeem txhim kho lub zog ntawm cov pob zeb hardened thiab txo qhov kev hloov ntawm qhov ntim ntawm cov pob zeb hardened.Yog li ntawd, cov dej txo tus nqi ntawm ya tshauv yog qhov kev ua haujlwm tseem ceeb ntawm ya tshauv pob zeb.

(3) Ncua lub sijhawm teeb tsa ntawm pob zeb

Cov tshuaj muaj pes tsawg leeg thiab cov yam ntxwv ntawm ya tshauv ua rau nws tsis tsuas yog sau compactness thiab micro aggregate hauv pob zeb, tab sis kuj muaj qhov sib txawv ntawm qhov chaw adsorption thiab cov nyhuv ntawm volcanic tshauv.Yog vim cov nyhuv ntawm ya tshauv saum toj no, tuaj yeem txhim kho lub pob zeb sab hauv lub qhov qauv, cuam ​​tshuam rau cov txheej txheem ntawm pob zeb hydration gel tivthaiv, kev sib koom tes ntawm kev txhim kho kev ua vaj tse, zoo txhim kho cov pob zeb hydration khoom qauv thiab muaj pes tsawg leeg, kev ua tau zoo, optimize cov qauv ntawm cov pob zeb sib txuas hloov chaw los txhawb kev ua tau zoo ntawm cov pob zeb ua kom zoo dua qub.

Nrog rau kev vam meej tsis tu ncua ntawm lub zej zog, daim ntawv thov ntawm ya tshauv tseem raug kawm. Raws li ib yam ntawm active admixture, ya tshauv plays lub luag haujlwm tseem ceeb hauv kev txhim kho ntxiv ntawm cov pob zeb ua haujlwm siab, uas tau txais ntau thiab ntau xim.Vim nws tus kheej tshwj xeeb zoo, tsis tsuas yog tuaj yeem txhim kho kev ua haujlwm ntawm pob zeb, tab sis kuj tuaj yeem tau txais txiaj ntsig ntau dua kev lag luam thiab kev sib raug zoo, ya tshauv kev loj hlob prospects yog heev ci.

Cie-China.org yog tus thawj coj ua npuas dej ua ke muab kev pabcuam ua npuas ncauj ua npuas ncauj, superplasticizer,ua npuas ncauj qhob zog enhancer rau lub teeb yuag pob zeb, CLC blocks. Yog koj tab tom nrhiav foaming tus neeg sawv cev, thov koj txhob xav li cas tiv tauj peb