15.11.2019 12:22
Russian Podolsk-Cement Develops High-Strength Alumina Binder
Podolsk-Cement plant near Moscow developed a technology that allows it to produce high-strength alumina binder and the first commercial batch is out. The company also told the Cement and Its Applications journal that their new product is notable for its proven strength.
The innovative material GV 30-70 [GV identificator is the Russian for AB — alumina binder] has analogues abroad: Secar-51, Gorkal-51, SRB-410, Chinese calcium aluminates. However, what sets the product apart from those binders is the increased compressive strength: 60 MPa in 6 hours, and 85 MPa in 24 hours.
The new material also has increased refractory qualities: six hours, 1400 C0 with a compressive strength of at least 50 MPa. The mineralogical composition of GV 30-70 is more than 80% calcium monoaluminate. According to the company, the substance has high chemical purity in terms of the content of oxides of silicon, iron, magnesium, sulfur and phosphorus. The substance contains more than 55% of aluminum oxide and less than 35% of calcium oxide.
The new binder can be used to produce modified dry mixes, providing quick setting, hardening and drying, shrinkage control, early high compression strength, as well as abrasion and corrosion resistance. GV 30-70 is suitable for durable refractory concrete floors in hot shops, for kiln lining, kiln parts production — tapholes and molds, — and ultrafast (6-12 hours) repair of concrete structures.
Among other things, the demand for sulfoaluminate-white-binder binder (SABV-30-1) increased among the customers of Podolsk-Cement this year. The binder is made using special sulfated clinker, gypsum, and modified additives.
SABV-30-1 allows you to prepare a quick-setting, expanding, sealing mix to quickly stop water leaks. The binder is designed for work at low negative temperatures without anti-frost additives and provides strong adhesion to the surface and an ultra-fast increase in compression strength. It starts to set in three minutes, starts to harden in seven minutes, reaches a compressive strength 30 MPa in 24 hours, and 50 MPa in three days. Manufacturers of modified dry mixtures are primary consumers of SABV-30-1.
The plant in the city of Podolsk is one of the first cement plants in Russia, founded 145 years ago. The company's products were used in the construction of a mining and processing plant in Nikolaevsk-on-Amur, a storage facility for hazardous substances in Tajikistan, the Lefortovo tunnel in Moscow, the Moscow Kremlin helipad, the Jerusalem monastery in Zvenigorod and other large facilities.
The innovative material GV 30-70 [GV identificator is the Russian for AB — alumina binder] has analogues abroad: Secar-51, Gorkal-51, SRB-410, Chinese calcium aluminates. However, what sets the product apart from those binders is the increased compressive strength: 60 MPa in 6 hours, and 85 MPa in 24 hours.
The new material also has increased refractory qualities: six hours, 1400 C0 with a compressive strength of at least 50 MPa. The mineralogical composition of GV 30-70 is more than 80% calcium monoaluminate. According to the company, the substance has high chemical purity in terms of the content of oxides of silicon, iron, magnesium, sulfur and phosphorus. The substance contains more than 55% of aluminum oxide and less than 35% of calcium oxide.
The new binder can be used to produce modified dry mixes, providing quick setting, hardening and drying, shrinkage control, early high compression strength, as well as abrasion and corrosion resistance. GV 30-70 is suitable for durable refractory concrete floors in hot shops, for kiln lining, kiln parts production — tapholes and molds, — and ultrafast (6-12 hours) repair of concrete structures.
Among other things, the demand for sulfoaluminate-white-binder binder (SABV-30-1) increased among the customers of Podolsk-Cement this year. The binder is made using special sulfated clinker, gypsum, and modified additives.
SABV-30-1 allows you to prepare a quick-setting, expanding, sealing mix to quickly stop water leaks. The binder is designed for work at low negative temperatures without anti-frost additives and provides strong adhesion to the surface and an ultra-fast increase in compression strength. It starts to set in three minutes, starts to harden in seven minutes, reaches a compressive strength 30 MPa in 24 hours, and 50 MPa in three days. Manufacturers of modified dry mixtures are primary consumers of SABV-30-1.
The plant in the city of Podolsk is one of the first cement plants in Russia, founded 145 years ago. The company's products were used in the construction of a mining and processing plant in Nikolaevsk-on-Amur, a storage facility for hazardous substances in Tajikistan, the Lefortovo tunnel in Moscow, the Moscow Kremlin helipad, the Jerusalem monastery in Zvenigorod and other large facilities.
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