Ubale Pakati pa Polycarboxylate Superplasticizer ndi Concrete Water Consumption

Chotsitsa madzi cha polycarboxylate ndi chopolymer cha graft chokhala ndi ma cell ngati chisa., unyolo waukulu ndi unyolo wa alkyl carbon wokhala ndi gulu logwira ntchito la carboxyl, ndipo unyolo wam'mbali ndi polyoxyethylene (ndi/kapena polyoxypropylene) chigawo chokhala ndi kutalika kosiyana.

Gulu la carboxyl lomwe lili mu unyolo waukulu wa polycarboxylate superplasticizer limadsorbed ndi kukopa kwa electrostatic ndi tinthu tating'ono ta simenti.,Magawo a polyoxyethylene aatali osiyanasiyana mu unyolo wam'mbali amalepheretsa tinthu tating'ono ta simenti kuti tiyandikire ndi kulepheretsa steric ndikukwaniritsa kubalalitsidwa kwawo kwa simenti., Ma polycarboxylate superplasticizers ali ndi kuthekera kokulirapo kwa simenti ndipo amawonetsa kutsika kwamadzi kwa konkriti.Kuchepetsa kwake madzi kwatha 40%, zomwe zingachepetse kwambiri kuchuluka kwa madzi osakaniza konkire.

Kugwiritsa ntchito madzi konkire kumatha kudziwa kuchuluka kwa madzi ndi binder (chiŵerengero cha simenti ya madzi), ndi chiŵerengero cha madzi-to-binder (chiŵerengero cha simenti ya madzi) imakhudza mwachindunji mawotchi a konkire.Lamulo la chiŵerengero cha madzi-simenti likuwona kuti 28d mphamvu yopondereza ya konkire imagwirizana mwachindunji ndi chiŵerengero cha madzi-simenti., akatswiri opanga nthawi zambiri amagwiritsa ntchito chiŵerengero chaching'ono cha madzi-to-binder.

Pofuna kupititsa patsogolo chuma cha konkire, kuchepetsa kumwa madzi konkire ndiyo njira yabwino kwambiri yochepetsera kuchuluka kwa madzi ndi gel osakaniza konkire.

Kuchepetsa konkriti kusakaniza madzi kudzakhudza kugwira ntchito kwa konkire yatsopano, ndi polycarboxylate yochepetsera madzi imatha kuonetsetsa kuti konkriti imagwira ntchito bwino. Komanso, mgwirizano organic wa polycarboxylic acid kuchepetsa madzi ndi kumwa madzi konkire amakwaniritsidwa.

Kusintha kwa madzi a konkire sikungotsimikizira kuchuluka kwa madzi-to-binder, komanso kumakhudza konkire-to-slurry chiŵerengero cha konkire.Monga ndi madzi-binder chiŵerengero, chiŵerengero cha slurry-to-fupa ndi chinthu chofunika kwambiri chomwe chiyenera kuganiziridwa pakupanga konkriti kusakaniza chiŵerengero.Chiŵerengero cha slurry kusakaniza konkire ndi chiŵerengero cha kuchuluka kwa madzi osakaniza ndi zinthu za simenti ku chiwerengero chonse cha aggregate.. Kusintha kwa chiŵerengero cha slurry kwa konkire kumakhudza kugwira ntchito ndi kukhazikika kwa voliyumu ya konkire.Poyerekeza ndi kachulukidwe wa zinthu za simenti (simenti: za 3.0 g/cm3; kuwuluka phulusa: 1.9 ku 2.4 g/cm3; mineral powder: za 2.6 g/cm3), kachulukidwe ka madzi (1.0 g/cm3) Ndiocheperapo kuposa iwo,

Pankhani ya misa yofanana, kusintha kwa kagwiritsidwe ntchito ka madzi kumakhudza kwambiri kuchuluka kwa slurry., the reduction of the water consumption will inevitably lead to a decrease in the volume of the slurry of the mixture, which affects the workability of the fresh concrete.Therefore, when reducing the water-to-binder ratio by reducing the water consumption of the concrete, the total amount of the rubber should be adjusted to ensure that the ratio of the slurry to the concrete is constant.However, concrete production personnel often neglect the effect of water consumption on the ratio of slurry to bone, which causes the volume of the slurry to vary greatly with the change of water consumption.

In order to ensure the workability of concrete, Opanga konkire ayika patsogolo zofunikira zaukadaulo zochepetsera madzi a polycarboxylate. Makina ochepetsera madzi a polycarboxylate sikuti ali ndi luso lamphamvu lomwazitsa simenti., komanso amafunika kukhala ndi luso labwino la plasticizing kusakaniza konkire, kotero kuti kugwira ntchito kwa konkire kumadalira kwambiri ntchito ya polycarboxylate yochepetsera madzi..

Cie-China.org ndiye wotsogola wotsogola wa konkriti wa thovu yemwe amapereka thovu la konkriti, superplasticizer,thovu konkire mphamvu zowonjezera kwa wopepuka konkire, Zolemba za CLC. Ngati mukuyang'ana superplasticizer, chonde khalani omasuka Lumikizanani nafe.