Gaan nga Concrete Additives | High-Performance Foaming Agents para sa Cellular Concrete
Superplasticizer mao ang usa ka matang sa konkreto admixture, nga makapauswag sa pagkatrabaho sa kongkreto, pagpakunhod sa konsumo sa enerhiya sa pagtukod ug pagpalambo sa kahusayan sa pagtukod. Sa konkreto, water reducing agent is added to the mixture of cement particles to get dispersion effect and to optimize the working performance of cement. Ubos sa kahimtang sa pagpadayon sa konkreto nga slump kanunay, mixing and subtract agent can greatly reduce the unit water use of concrete mixture, reduce the water cement ratio of concrete, the strength and stability of the reinforced concrete. Or in the concrete workability and strength of the same condition, adding water reducer can reduce the unit of cement, save cement. Hinuon, the application of superplasticizer in concrete also has some problems, such as the majority of superplasticizer ions being anionic surfactants, lignin sulfonate, naphthalene sulfonate formaldehyde polymer, ug uban pa..
According to the water-reducing effect of concrete superplasticizer, concrete superplasticizer can be divided into the following three categories:
(1) Ordinary water-reducing agent, nailhan usab nga plasticizer, ang rate sa pagkunhod sa tubig niini dili moubos sa 8%, the main component is lignin sulfonate;
(2) High-effect water-reducing agent, nailhan usab nga superplasticizer, water reduction rate is not less than 14%, the main component is represented by tea water-reducing agent;
(3) High-performance superplasticizer, water reduction rate is not less than 25%, regarding polycarboxylic acid series superplasticizer as a representative.
Sa pagkakaron, the new type of high efficiency water reducing agent has the following five categories:
(1) Polycarboxylate superplasticizer (carboxylic acid water reducing agent): poly carboxylic acid system has a lot of chain between the molecules of water reducing agent of some strong polarity in the main chain anions with surface bonded to a piece of electricity. The formation of hydration film can not only enhance the adsorption force between molecules but also produce space steric effect as well as good plasticizing effect. But this water reducer is expensive, which makes its application be limited to some extent, and make it has strong selectivity to defoaming agent and air-entraining agent. Sa pagkakaron, the polycarboxylate superplasticizer with the best comprehensive efficiency is the high performance superplasticizer.
(2) Naphthalene series high-efficient superplasticizer: naphthalene series high-efficient superplasticizer has electrostatic repulsion effect, molecular repulsion between electric charges, just on the cement in the hydration process of its own flocculation has a certain decomposition effect, so that free water drainage it contained would be reduced, and the water reduction effect is obvious. Kung itandi sa polycarboxylic acid series superplasticizer, Ang naphthalene series superplasticizer adunay medyo hamtong nga teknolohiya nga adunay mubu nga presyo.
(3) Aminosulfonic acid series superplasticizer: aminosulfonic acid series superplasticizer is a non-air-entraining resin type high-efficiency superplasticizer, the water reduction rate can reach more than 25%, which make the concrete workability and durability have significant enhancement. Hinuon, ang gasto sa produksiyon sa sulfamic acid series superplasticizer medyo taas. Kung ang gibug-aton sa molekula gamay ra o dako kaayo, kini dali nga hinungdan sa pagdugo, paglainlain ug pagkagahi. Sa pagkakaron, the research of this kind of water-reducing agent is mostly through modifying aminosulfonic acid and dispersing cement particles, which can effectively reduce the shortcomings in use and expand the market prospect.
(4) Gibag-o nga lignosulfonate superplasticizer: modified lignosulfonate superplasticizer is made by modifying lignosulfonate. Ang bag-ong giusab nga lignin sulfonate kay usa ka high-efficiency nga water-reducing agent, the water-reducing rate is 1.5 times higher than that of the ordinary water-reducing agent, and the hydration heat and collapse degree of cement are changed to effectively ensure the excellent performance of concrete, ug gamay ra ang gasto sa produksiyon, nga makaayo sa pagtukod.
(5) Hybrid nga ahente sa pagkunhod sa tubig: Ang ahente sa pagkunhod sa tubig gisagol pinaagi sa pagsagol sa quaternary copolymer acrylate graft copolymer, contains amino benzene sulfonic acid maleic acid amide and vinyl pyrrole copolymer, and at the same time other copolymer containing sulfonic acid and carboxylic acid based collection to a piece, thus using the functions of their different anion and polarity of functionality, can be used as a super plasticizer all kinds of polymer and copolymer, thereby interacting with cement particles. Ang paghimo sa sinagol nga superplasticizer komplikado, ug ang pag-optimize sa kantidad sa pagsagol nanginahanglan daghang mga eksperimento.
Ang Cie-China.org mao ang nanguna nga foam concrete additives provider nga naghatag og concrete foaming agent, superplasticizer,foam concrete strength enhancer para sa lightweight nga kongkreto, Mga bloke sa CLC. Kung nangita ka superplasticizer, palihug pagbati nga gawasnon sa kontaka mi.