Superplasticizer

Ringkesan Superplasticizer Beton

Reducer banyu minangka campuran beton sing bisa nyuda jumlah banyu sing nyampur nalika njaga slump beton sing ora owah.. Campuran beton duweni efek dispersing ing partikel semen, kang bisa nambah workability sawijining, nyuda konsumsi banyu unit, nambah fluidity saka campuran beton; utawa ngurangi konsumsi semen unit lan nyimpen semen.

Types of water reducers

According to performance, it can be divided into ordinary water reducer, high-efficiency water reducer, and high-performance water reducer.
1) Ordinary water reducer refers to an admixture with a water reduction rate of not less than 8% under the condition that the slump of concrete is basically the same.

2) High-efficiency water reducer refers to an admixture with a water reduction rate of not less than 14% under the condition that the slump of concrete is basically the same.

3) High-performance water reducer refers to an admixture with a water reduction rate of not less than 25% under the condition that the slump of concrete is basically the same. Compared with high-efficiency water reducers, it has good slump retention performance, small drying shrinkage and certain air entrainment performance.

Due to the important contribution of high-efficiency water reducer to concrete modification, its application has become the third breakthrough in the history of concrete development after reinforced concrete and prestressed concrete, which has enabled concrete to develop from the original manual pouring or hanging tank pouring to pumping construction, saving manpower, improving work efficiency, ensuring quality, eliminating noise, and making a great leap in the technical level and construction level of concrete.

Mechanism of action of water reducer

1) Dispersion

After the cement is mixed with water, the cement slurry forms a flocculation structure, lan 10% kanggo 30% of the mixing water is wrapped in the cement particles and cannot participate in free flow and lubrication, thus affecting the fluidity of the concrete mixture. Nalika nyuda banyu ditambahake, molekul peredam banyu bisa diadsorpsi kanthi arah ing permukaan partikel semen supaya permukaan partikel semen duwe muatan sing padha. (biasane muatan negatif), mbentuk efek tolak elektrostatik, njalari partikel-partikel semen saling mbubarake, struktur flokulasi disintegrasi, lan ngeculake bagean kebungkus banyu kanggo melu ing aliran, kanthi mangkono nambah fluidity saka campuran beton.

2) Efek lubrikasi

Klompok hidrofilik ing peredam banyu banget polar. Film adsorpsi peredam banyu ing permukaan partikel semen bisa mbentuk film banyu larut sing stabil kanthi molekul banyu.. This water film has a good lubricating effect and can effectively reduce the sliding resistance between cement particles so that the fluidity of concrete is further improved.

3) Steric hindrance

The hydrophilic side chains in the water reducer structure extend in the aqueous solution and form a hydrophilic three-dimensional adsorption layer of a certain thickness on the surface of the adsorbed cement particles. When the cement particles are close, the adsorption layers begin to overlap, yaiku, steric hindrance occurs between the cement particles. The more overlaps, the greater the steric repulsion and the greater the hindrance to the cohesion between cement particles so that the concrete maintains a good slump.

4) Slow-release effect of grafted copolymer side chains

During the preparation process of new water reducers, such as polycarboxylic acid water reducers, some side chains are grafted on the molecules of the water reducer. The side chains can not only provide a steric hindrance effect but also be slowly cut off in the high alkalinity environment of cement hydration, releasing polycarboxylic acid with a dispersing effect so as to improve the dispersion effect of cement particles and control the slump loss.

Why does concrete need to reduce water?

A key parameter of the concrete mix ratio is the water-cement ratio, yaiku, the ratio of water to cementitious material. The higher the water-cement ratio, the better the workability of fresh plastic concrete, the easier it is to construct, but the lower the strength of concrete. In order to solve this contradiction, Reducer banyu kudu ditambahake kanggo nambah kekuwatan tanpa ngorbanake kemampuan kerja utawa nyuda dosis semen nalika njaga kemampuan lan kekuatan..

Fungsi penting saka reducer banyu yaiku nyuda konsumsi banyu beton, lan iku salah siji saka bahan mentahan indispensable kanggo bahan beton. Kekuwatan beton raket banget karo rasio banyu-semen. Ing slump tartamtu, konsumsi banyu luwih cilik, sing luwih dhuwur kekuatan. Nambah peredam banyu bisa nyuda konsumsi banyu nalika tetep slump ora owah, mangkono nambah kekuatan beton.

Ing sawetara kelas kekuatan kurang ngisor C30, panggunaan peredam banyu bisa nyuda konsumsi semen, nyuda biaya, lan nambah workability saka beton plastik.

Ing sawetara kelas kekuatan medium saka C40 kanggo C50, a water reducer is generally required to ensure the workability (pumping) and strength of concrete.

For the high strength grade range above C50, without the use of a high-efficiency or high-performance water reducer, the concrete has basically no workability and cast-in-place concrete is difficult to construct.

Pumped concrete should be mixed with a pumping agent or water reducer, and mineral admixtures should be added; a high-performance water reducer with a water reduction rate of not less than 25% should be used for high-strength concrete above C60; mineral admixtures and slow-setting water reducer should be added to large-volume concrete.

Profil Perusahaan

ConcreteFashion is the global leader in Low-Density Cellular Concrete (LDCC), Beton Cahya Celluar (CLC), lan solusi umpluk direkayasa majeng. Dikenal sacara global amarga komitmen kanggo riset, inovasi, lan keahlian sing ditrapake, kita wis nyediakake solusi umpluk direkayasa wiwit awal 2012 kang.

Kita bisa nyedhiyakake kualitas dhuwur superplasticizersuch asNaphthalene Superplasticizer, HPEG 2400 PolycarboxylateSuperplasticizer, Admixture superplasticizer polikarboksilat tipe penahan slump dhuwur, Polycarboxylate Ether superplasticizerlan liyaneSuperplasticizer beton sak ndonya.

Perusahaan iki nduweni departemen teknis profesional lan departemen pengawasan kualitas, laboratorium sing dilengkapi kanthi apik, lan dilengkapi peralatan testing majeng lan sawise-sales customer service center.Send kita email utawa klik ing produk needed kanggo ngirim priksaan.

Yen sampeyan pengin ngerti liyane babagan Polycarboxylate Superplasticizer, please aran gratis lan hubungi kita: [email protected]

Paket Polycarboxylate Superplasticizer Powder

25Kg anyaman tas njaba dilapisi karo kantong plastik, disimpen ing suhu kamar adoh saka cahya, kelembapan lan udan.

Panyimpenan saka Polycarboxylate Superplasticizer Powder

Kemasan plastik komposit kertas diantrekake karo kantong plastik

FAQs saka Beton Superplasticizer

Q: Cukup carane superplasticizers fungsi?
A: Superplasticizers dianggo kanthi nyebarake partikel beton, nyilikake rubbing antar-partikel lan ngidini campuran kanggo mindhah luwih bebas karo banyu kurang.

Q: Bisa superplasticizers digunakke karo kabeh jinis beton?
A: Mayoritas superplasticizers kompatibel karo jinis semen standar, nanging kompatibilitas karo rincian campuran kudu dievaluasi kanggo nggawe efficiency paling luweh tartamtu.

Q: Apa ana kekurangan kanggo nggunakake superplasticizer?
A: While useful, superplasticizers can sometimes create problems such as enhanced blood loss if excessive used or postponed establishing times. Proper does and blending techniques are necessary.

Q: How do I store superplasticizers?
A: Store superplasticizers in a great, lokasi garing, shielded from direct sunshine and cold temperatures. Follow manufacturer standards for best outcomes.

Q: What is the life span of a superplasticizer?
A: Life span differs depending on the kind and storage space conditions however normally ranges from 6 months to a year. Constantly examine the producer's referrals.