Silica fume is used extensively in concrete in various countries around the world, and there are several standards in place to regulate its use.
Hoa Kỳ – ASTM C1240
In the United States, silica fume is regulated by ASTM C1240, Đặc điểm kỹ thuật tiêu chuẩn cho khói Silica được sử dụng trong hỗn hợp gốc xi măng. This standard covers the physical and chemical requirements for silica fume to be used in concrete and other cementitious mixtures. The standard specifies the minimum silica content, loss on ignition, độ mịn, and other requirements for silica fume.
Canada – CSA A23.5
Ở Canada, silica fume is regulated by CSA A23.5, Supplementary Cementitious Materials. This standard covers the use of silica fume as a supplementary cementitious material in concrete, cối, and grout. The standard specifies the requirements for silica fume, including chemical and physical properties, and sets limits for impurities such as chlorides and sulfates.
Liên minh châu Âu – TRONG 13263
In the European Union, silica fume is regulated by EN 13263, Silica fume for concrete. This standard specifies the requirements for silica fume to be used in concrete, including chemical and physical properties, as well as requirements for packaging and labeling.
Trung Quốc – GB/T 18736
In China, silica fume is regulated by GB/T 18736, Microsilica for Concrete. This standard specifies the test methods for silica fume used in concrete, including tests for fineness, diện tích bề mặt cụ thể, loss on ignition, and other properties.
Nhật Bản – JIS A 6207
In Japan, silica fume is regulated by JIS A 6207, Silica fume for concrete. This standard covers the physical and chemical requirements for silica fume to be used in concrete, including particle size distribution, diện tích bề mặt cụ thể, loss on ignition, and other properties.
Brazil – ABNT NBR 13956
Ở Brazil, silica fume is regulated by ABNT NBR 13956, Microsilica for concrete – Requirements and test methods. This standard covers the requirements and test methods for silica fume used in concrete, including chemical and physical properties, as well as packaging and labeling requirements.
Korea – KS F 2567
In Korea, silica fume is regulated by KS F 2567, Microsilica for concrete. This standard covers the physical and chemical requirements for silica fume to be used in concrete, including minimum silica content, loss on ignition, độ mịn, and other properties.
Việt Nam – TCVN 9395
In Vietnam, silica fume is regulated by TCVN 9395:2012, Microsilica for concrete – Technical requirements. This standard covers the technical requirements for silica fume to be used in concrete, including chemical and physical properties, as well as packaging and labeling requirements.
Ấn Độ – IS 15388
In India, silica fume is regulated by IS 15388, Silica Fume – Sự chỉ rõ. This standard covers the physical and chemical requirements for silica fume to be used in cementitious mixtures, including minimum silica content, độ mịn, and other requirements.
Tổng thể, the standards for silica fume in various countries are similar, with requirements for minimum silica content, loss on ignition, độ mịn, and other properties. These standards ensure that silica fume is of consistent quality and can be safely used in concrete and other cementitious mixtures.
