Qhov sib txawv ntawm cov dej reducer thiab superplasticizer

Qhov sib txawv ntawm cov dej reducer thiab superplasticizer

Tsis muaj qhov tseeb thiab meej keeb kwm ntawm qhov sib txawv ntawm cov dej reducers thiab superplasticizers. Ob leeg yog hom tshuaj additives uas feem ntau siv hauv kev tsim kho kev lag luam los txhim kho kev ua haujlwm ntawm pob zeb thiab txhim kho nws lub zog, durability, thiab lwm yam khoom.

Txawm li cas los xij, muaj qee qhov kev nthuav dav thiab kev txhim kho uas tuaj yeem pom nyob rau hauv evolution ntawm ob hom additives. Cov dej reducers tau siv ntau xyoo lawm thiab tau pib siv los txo cov dej uas xav tau los tsim cov pob zeb ntawm qhov sib xws. Qhov no yog qhov tseem ceeb vim tias nws tso cai rau cov dej tsawg dua los siv yam tsis muaj kev txi lub zog, uas ua rau txo qhov kev pheej hmoo ntawm kev tawg thiab lwm yam teeb meem.

Sij hawm dhau mus, cov dej txo qis tau ua kom zoo dua thiab tau tsim los txhim kho lwm yam ntawm cov pob zeb, xws li nws cov dej ntws, teeb tsa lub sijhawm, thiab cov ntsiab lus ntawm huab cua. Superplasticizers, ntawm qhov tod tes, yog kev txhim kho tsis ntev los no uas tau tshwm sim hauv xyoo 1970 thiab 1980s. Lawv tau pib tsim los pab tsim cov pob zeb ua tus kheej, uas tuaj yeem ntws mus rau hauv qhov chaw nruj thiab nyob ib puag ncig cov duab uas tsis tas yuav muaj kev vibration.

Txij thaum ntawd los, superplasticizers tau txuas ntxiv hloov zuj zus thiab tam sim no tau siv ntau yam kev siv, los ntawm cov pob zeb ua kom muaj zog mus rau cov khoom zoo nkauj. Lawv feem ntau kim dua li cov dej txo qis tab sis muaj kev hloov pauv ntau dua thiab tswj hwm cov khoom ntawm cov pob zeb.

Hauv cov ntsiab lus, qhov sib txawv ntawm cov dej reducers thiab superplasticizers yog qhov tseem ceeb ntawm keeb kwm thiab kev hloov pauv. Txawm hais tias ob qho tib si yog cov khoom tseem ceeb ntawm cov khoom siv ntxiv, superplasticizers feem ntau suav tias yog ntau dua thiab ntau yam, thiab feem ntau siv rau hauv cov ntawv thov ntau dua.