Lightweight Concrete Additives | High-Performance Foaming Agents for Cellular Concrete
Concrete plasticizer inoreva musanganiswa unogona kuderedza huwandu hwemvura inoshandiswa pakusanganisa uye kuwedzera simba rekongiri pasi pemamiriro ekuti kushanda kwekongiri kunoramba kuripo uye kuwanda kwesamende hakuperi..
Mhedzisiro yekongiri yeplasticizer pane nyowani kongiri inonyanya kuratidzwa mune zvinotevera zvinhu:
Concrete plasticizer effect
Iyo nzira yekukanganisa kweplasticizer inonyanya kukonzerwa nekupfava kwesoftener nezvikamu zvesimende uye kuparadzirwa kwezvikamu zvesimende nevamiririri vanoderedza mvura.. Mushure mokunge mvura inoderedza mumiririri inowedzerwa kune konkrete, ichaparadzaniswa kuva macromolecular anions uye simbi cations (vakadai saNa +, Ca 2+). Macromolecular anions inoratidzira zvine simba pamusoro pekuita inoshambadzirwa pamusoro pemasimende esimende., zvichiita kuti zvimedu zvesimende zvipiswe zvisina kunaka, uye zvimedu zvesimende zvakaparadzirwa nekuda kweiyo imwe charge repulsion. Panguva imwe, nekuti plasticizer ndeye hydrophilic uye adsorption layer ifirimu rakanyungudutswa rakatenderedza masimende., inogonawo kukanganisa kubatana kwesimende (nzvimbo yekudzivirira maitiro), saka zvimedu zvesimende uye yechipiri coacervated particles zvinoparadzirwa uye zvinosunungurwa. Mvura nemhepo zviri mumaflocculent aggregates zvinogona kuderedza mvura.
2. Plasticizing effect
Mushure mekusanganisa mvura-inoderedza admixtures mukongiri, iyo fluidity inogona kuwedzerwa zvakanyanya pasina kushandura mvura-simende reshiyo, iyo inonzi plasticizing yekongiri. Pamusoro pemhedzisiro yekushambadza uye kupararira, iyo plasticizing chokwadi ine mhedzisiro yekunyorova uye yekuzora maitiro. Nekuda kweaya mabasa akati wandei emvura inodzikisa agent, chero bedzi mvura shoma inoshandiswa, iyo kongiri inogona kusanganiswa nyore nyore zvakafanana, uye kushanda kwekongiri ichangobva kubikwa kunovandudzwa zvakanyanya.
3. Regulating effect
Ioni dzinopomerwa dzakaparadzaniswa mu simenti-mvura system inogona kushambadzirwa pamusoro pezvikamu zvesimende kuwedzera mukana we zeta., saka nguva yekudzikamisa yehurongwa hwakareba. Panguva imwe, anion yakadaro adsorbing membrane uye firimu remvura rinogadzirwa neiyo hydrogen bonding association inotadzisawo kusangana pakati pemasimende nemvura., kuderedza hydration effect, uye nokudaro inogona kudzoreredza marongero.
• Nzira yekudzikisa mvura
mvura-inoderedza admixtures ndeye yakajairika surfactant. Kune chero mushonga wekudzikisa mvura, chimiro chayo chemorekuru chinosanganisira zvikamu zviviri: boka repolar uye boka risina polar. Iro boka rakanyanyisa rinoshambadzirwa pamusoro pesimenti zvimedu, izvo zvinonyanya kutarisisa kubatana kwemvura, kuderedza agent mamorekuru kune zvicherwa zvezvikamu zvesimende. Inoratidzika kunge inokanganisa kemikari uye zvemuviri zvimiro zveyese mvura inoderedza molecule kana ion. Apo mvura inoderedza mumiririri mamorekuru (kana maatomu) dzakanangidzirwa negwara pamusoro peiyo simenti mineral component, mapoka asiri-polar anotarisana nekunze kuti aite hydrophobic film layer, saka iyo hydrophobicity inokanganisa. Panguva imwe, mapoka asiri-polar anokanganisawo kuwirirana kwemasimende zvimedu uye adsorption kugona kwemapoka epolar..
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