Te mau hu'ahu'a rahi

Concrete Superplasticizer Overview

A water reducer is a concrete admixture that can reduce the amount of mixing water while maintaining the slump of concrete basically unchanged. Concrete mixture has a dispersing effect on cement particles, which can improve its workability, reduce the unit water consumption, improve the fluidity of concrete mixture; or reduce the unit cement consumption and save cement.

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, te haapapûraa i te huru, te faaoreraa i te reo puai, e te raveraa i te hoê hororaa rahi i roto i te faito o te mau rave'a aravihi e te faito paturaa.

Te rave'a no te faaiti i te pape

1) Te purara

I muri a'e i te anoiraa i te sima i te pape, E hamani te hu'ahu'a sima i te hoê hamaniraa flocculation, e 10% a 30% Ua tapo'ihia te pape anoi i roto i te mau hu'ahu'a sima e eita ta'na e nehenehe e amui atu i roto i te taheraa e te hinu, e faaino te reira i te pape o te anoiraa sima. Ia amuihia'tu te rave'a no te faaiti i te pape, E nehenehe te mau hu'ahu'a no te faaiti i te pape e tomo i nia i te mata o te mau hu'ahu'a sima ia nehenehe te mata o te mau hu'ahu'a sima e amo i te hoê â faaueraa (I te rahiraa o te taime, e faaueraa ino), te faatupuraa i te hoê faahopearaa o te hi'opo'araa, ma te turai i te mau hu'ahu'a sima ia haaparare te tahi e te tahi, te haamauraa o te flocculation ia vavahi, e a tuu i te tuhaa o te pape tei tapo'ihia ia amui atu i roto i te taheraa, ma te faarahi i te pape o te anoiraa sima.

2) Te faahopearaa

E mea polar roa te pǔpǔ hydrophilic i roto i te pape. E nehenehe te hoho'a teata no te faaiti i te pape i nia i te mau hu'ahu'a sima e hamani i te hoê hoho'a teata pape e te mau hu'ahu'a pape. E faahopearaa maitai to teie hoho'a teata pape e e nehenehe te reira e faatitiaifaro i te patoiraa i rotopu i te mau hu'ahu'a sima ia haamaitai atu â i te pape o te simeni.

3) Te fifi Steric

E toro te mau mekameka i te pae hydrophilic i roto i te hamaniraa i te pape i roto i te faaafaroraa i te pape e e hamani i te hoê ahu hydrophilic e toru ahu e te hoê matotoraa i ni'a i te mata o te mau hu'ahu'a sima. Ia fatata ana'e te mau hu'ahu'a sima, the adsorption layers begin to overlap, that is, 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, that is, 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, a water reducer needs to be added to improve strength without sacrificing workability or to reduce cement dosage while maintaining workability and strength.

The essential function of a water reducer is to reduce the water consumption of concrete, and it is one of the indispensable raw materials for concrete materials. The strength of concrete is closely related to the water-cement ratio. At a certain slump, the smaller the water consumption, the higher the strength. Adding a water reducer can reduce water consumption while keeping the slump unchanged, thus improving the strength of concrete.

In the low strength grade range below C30, the use of a water reducer can reduce cement consumption, reduce costs, and improve the workability of plastic concrete.

In the medium strength grade range of C40 to C50, a water reducer is generally required to ensure the workability (te pâmuraa) 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.

Hoho'a o te Taiete

ConcreteFashion is the global leader in Low-Density Cellular Concrete (LDCC), Celluar Light Concrete (CLC), and advanced engineered foam solutions. Ua matau - maitai - hia oia na te ao nei no to ' na fafauraa i te maimiraa, Fa'aterehia, e te ite aravihi, we have been providing engineered foam solutions since the early 2012's.

We can supply high-quality te mau hu'ahu'a rahisuch asNaphthalene Superplasticizer, HPEG 2400 PolycarboxylateSuperplasticizer, High slump retaining type polycarboxylate superplasticizer admixture, Polycarboxylate Ether superplasticizerand otherTe mau hu'ahu'a rahi all over the world.

E tuhaa ohipa aravihi to te taiete e te hoê tuhaa fenua no te hi'opo'araa i te maitai, te hoê piha maimiraa tei faaineine-maitai-hia, and equipped with advanced testing equipment and after-sales customer service center.Send us an email or click on the needed products to send an inquiry.

Mai te mea e, te hinaaro ra outou e ite hau atu no ni'a i te Polycarboxylate rahi roa'e, A faaite mai ia matou: @nanotrun.com

Te hoê pu'eraa polycarboxylate

25Ua tapo'ihia te hoê pute hu'ahu'a Kg i te hoê pute hu'ahu'a, i te anuvera o te piha i te atea i te maramarama, haumi e te ûa.

Te tapearaa i te puehu polycarboxylate

Te mau pute hu'ahu'a tei tapo'ihia i te mau pute hu'ahu'a

FAQs no ni'a i te mau rave'a haaparareraa parau

Q: Nahea te mau rave'a haaparareraa parau ia ohipa?
TE: E ohipa te mau superplasticizers na roto i te haaparareraa i te mau hu'ahu'a simeni, te faaitiraa mai i te mau hu'ahu'a e te vaiihoraa i te anoiraa ia tere ma te ti'amâ e te iti a'e te pape.

Q: E nehenehe anei te mau superplasticizers e faaohipahia i nia i te mau huru raima atoa?
TE: E tano te rahiraa o te mau superplasticizers i te mau huru sima matauhia, tera râ, e tia ia hi'opoahia te taairaa e te mau tuhaa taa maitai no te fana'o i te tahi mau aravihi maitai roa ' ' e.

Q: Are there any kind of disadvantages to utilizing superplasticizers?
TE: 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?
TE: Store superplasticizers in a great, dry location, shielded from direct sunshine and cold temperatures. Follow manufacturer standards for best outcomes.

Q: What is the life span of a superplasticizer?
TE: 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.