Chemical admixtures rau mortar thiab pob zeb muaj ob qho tib si zoo sib xws thiab qhov sib txawv. Qhov no feem ntau yog vim qhov sib txawv ntawm kev siv mortar thiab pob zeb. Qhob yog tsuas yog siv los ua cov khoom siv, thaum mortar feem ntau yog cov khoom tiav thiab cov khoom sib txuas. Mortar chemical admixtures kuj tuaj yeem raug cais los ntawm cov tshuaj muaj pes tsawg leeg thiab kev siv lub luag haujlwm tseem ceeb.
Classification los ntawm cov tshuaj muaj pes tsawg leeg
(1) Inorganic ntsev mortar additives: xws li thaum ntxov zog tus neeg saib xyuas, antifreeze tus neeg saib xyuas, accelerator, expansion agent, colouring agent, waterproofing agent, thiab lwm yam .;
(2) Polymer surfactants: Hom admixture no feem ntau yog surfactants, xws li plasticizers / water reducers, shrinkage reducers, defoamers, air-entraining agents, emulsifiers, thiab lwm yam.
(3) Resin polymers: xws li polymer emulsions, redispersible polymer hmoov, cellulose ethers, dej-soluble polymer cov ntaub ntawv, thiab lwm yam .;
Muab faib los ntawm kev ua haujlwm tseem ceeb
(1) Admixtures los txhim kho kev ua hauj lwm (rheological zog) ntawm cov mortar tshiab, nrog rau cov yas (dej reducers), cua-entraining agents, dej-retaining agents, thiab tackifiers (viscosity regulators);
(2) Admixtures rau kev kho lub sij hawm teem thiab hardening kev ua tau zoo ntawm mortar, nrog rau retarders, super retarders, accelerators, thaum ntxov zog, thiab lwm yam.;
(3) Admixtures los txhim kho lub durability ntawm mortar, air-entraining agents, waterproofing agents, xeb inhibitors, fungicides, alkali-aggregate tshuaj tiv thaiv inhibitors;
(4) Admixtures, expansion agents thiab shrinkage reducers los txhim kho lub ntim stability ntawm mortar;
(5) Admixtures los txhim kho cov cuab yeej cuab tam ntawm mortar, polymer emulsion, redispersible polymer hmoov, cellulose ether, thiab lwm yam.;
(6) Admixtures, colorants, deg beautifiers, thiab brighteners los txhim kho cov hniav zoo nkauj ntawm mortar;
(7) Admixtures rau kev tsim kho nyob rau hauv tshwj xeeb tej yam kev mob, antifreeze, self-leveling mortar admixtures, thiab lwm yam .
(8) Lwm yam, xws li fungicides, fibers, thiab lwm yam.;
Cov khoom siv thiab kev siv tshuaj lom neeg rau cov hmoov qhuav mortar
Qhov sib txawv tseem ceeb ntawm cov ntaub ntawv mortar thiab cov khoom siv pob zeb yog cov tshuaj khib siv los ua cov paving thiab cov khoom sib txuas, thiab feem ntau yog cov txheej txheem nyias nyias thaum siv, thaum cov pob zeb feem ntau yog siv los ua cov khoom siv, thiab cov nyiaj kuj loj. Yog li ntawd, cov kev cai rau kev ua hauj lwm ntawm kev lag luam pob zeb kev tsim kho yog feem ntau stability, fluidity thiab fluidity tuav peev xwm. Cov kev cai tseem ceeb rau kev siv tshuaj khib nyiab yog cov dej tuav zoo, cohesion thiab thixotropy.
Post lub sij hawm: Mar-10-2023