Phosphonates Phosphonates have a wide variety of applications in the industry. One of their main applications in construction is as set retarders, although they can also be used as a plasticisers. In many cases, a significant amount of time passes before the concrete is placed, either because it has to be transported over long distances or because the concrete placement conditions on site are slow. Phosphonates can also help improve freeze-thaw resistance and salt resistance in cements, for example in high-temperature oil and gas well cementing operations. The affinity of phosphonates to metallic surfaces leads to corrosion-inhibiting properties for reinforcement in reinforced concrete, but it can also positively influence the gas evolution from aluminum grit in the production of aerated concrete. Certain phosphonates retard the setting of gypsum, an effect that extends the variety of possible applications. Zschimmer & Schwarz offers a wide range of phosphonates capable of maintaining the workability of concrete and gypsum for an extended period of time. Phosphonates recommended as set retarders and plasticisers: Solid products CUBLEN E 34135 P CUBLEN K 9012 GR / K 8514 GR Liquid products CUBLEN A 4015 CUBLEN D 5012 / CUBLEN D 3217 N CUBLEN E 3115 CUBLEN F 3016 CUBLEN K 3014 CUBLEN P 4014 CUBLEN PEP 556 Surfactants Surfactants are chemical compounds capable of reducing the surface tension between two phases. They are able to stabilise air bubbles within the concrete structure, providing a more fluid consistency, which is used to reduce water requirements. In addition, their application provides an improvement of different properties of the concrete, such as an increase in workability, durability, and thermal conductivity, together with a reduction in segregation and bleeding. Zschimmer & Schwarz offers a range of anionic surfactants capable of providing these properties in concrete. Anionic and nonionic surfactants recommended as air-entraining agents: PRODUKT EIAE 1460 PRODUKT EIAE 1470 PRODUKT EIAE 1480 PRODUKT EIAE 1490 Polymers The water-cement ratio is a parameter that significantly affects the properties of concrete. Reducing the amount of water results in increased flexural and compressive strength, greater resistance to environmental conditions and a reduced tendency to shrinkage cracking. However, it also entails a loss of workability. There are several families of polymers synthesised to fluidise the mixture when added, thus compensating the workability loss caused by reducing water requirements. At Zschimmer & Schwarz, we offer several families of polymers capable of reducing the water requirements in the concrete mix. Polymers recommended as water reducers: PRODUKT EIP 1370 PRODUKT EIP 1380 PRODUKT EIP 1390 Esters Esters are used to prevent a material from adhering to a surface by providing a barrier between the surface of the mold and the substrate. In this way, removal and cleaning of the substrate are facilitated. Zschimmer & Schwarz offers a wide range of oils for this application. Esters recommended as mold release agents: PRODUKT EIMR 1400 PRODUKT EIMR 1410 PRODUKT EIMR 1420 PRODUKT EIMR 1430 PRODUKT EIMR 1440 PRODUKT EIMR 1450
Phosphonates have a wide variety of applications in the industry. One of their main applications in construction is as set retarders, although they can also be used as a plasticisers. In many cases, a significant amount of time passes before the concrete is placed, either because it has to be transported over long distances or because the concrete placement conditions on site are slow. Surfactants are chemical compounds capable of reducing the surface tension between two phases. They are able to stabilise air bubbles within the concrete structure, providing a more fluid consistency, which is used to reduce water requirements. In addition, their application provides an improvement of different properties of the concrete, such as an increase in workability, durability, and thermal conductivity, together with a reduction in segregation and bleeding. Zschimmer & Schwarz offers a range of anionic surfactants capable of providing these properties in concrete. The water-cement ratio is a parameter that significantly affects the properties of concrete. Reducing the amount of water results in increased flexural and compressive strength, greater resistance to environmental conditions and a reduced tendency to shrinkage cracking. However, it also entails a loss of workability. There are several families of polymers synthesised to fluidise the mixture when added, thus compensating the workability loss caused by reducing water requirements. At Zschimmer & Schwarz, we offer several families of polymers capable of reducing the water requirements in the concrete mix. Esters are used to prevent a material from adhering to a surface by providing a barrier between the surface of the mold and the substrate. In this way, removal and cleaning of the substrate are facilitated. Zschimmer & Schwarz offers a wide range of oils for this application.Phosphonates
Phosphonates can also help improve freeze-thaw resistance and salt resistance in cements, for example in high-temperature oil and gas well cementing operations.
The affinity of phosphonates to metallic surfaces leads to corrosion-inhibiting properties for reinforcement in reinforced concrete, but it can also positively influence the gas evolution from aluminum grit in the production of aerated concrete.
Certain phosphonates retard the setting of gypsum, an effect that extends the variety of possible applications. Zschimmer & Schwarz offers a wide range of phosphonates capable of maintaining the workability of concrete and gypsum for an extended period of time.
Phosphonates recommended as set retarders and plasticisers:Surfactants
Anionic and nonionic surfactants recommended as air-entraining agents:Polymers
Polymers recommended as water reducers:Esters
Esters recommended as mold release agents:
