Sulfate resistant portland cement for SaleSulfate resistant portland cement

GENERAL

Sulfate resistant portland cement can be divided into medium sulfate resistant Portland cement and high sulfate resistant Portland cement according to the degree of sulfate resistance. The hydraulic cementitious material with resistance to the erosion of medium concentration sulfate ion is made of Portland cement clinker with appropriate composition, adding an appropriate amount of gypsum and grinding, which is called medium sulfate resistant Portland cement. Medium sulfur resistant cement for short. Code P·MSR. High sulfate resistant Portland cement is a hydraulic cementitious material which is made of Portland cement clinker with appropriate composition, added with an appropriate amount of gypsum and ground to resist the erosion of high concentration sulfate ions. High sulfur resistant cement for short. Code P·HSR.

FEATURE

◆Appearance: grayish black, or dark brown powder.

◆It has high sulfate resistance and low hydration heat.

Scope of application

◆Prepare sulfate resistant concrete; ◆Production of cement plate products, cement pipes, etc;

◆Seaport, water conservancy, underground, tunnel culvert, diversion building, road and bridge, pipe pile pipeline, foundation concrete and other works eroded by sulfate;

◆Sea reclamation project, coastal and submarine pipe pile foundation, island building foundation, chemical corrosion foundation and other projects;

◆Anti seawater corrosion projects such as seawall dam, mariculture and desalination project, marine aquarium project, etc.

PERFORMANCE

Performance metrics Standard GB 748-2005 Sulfate Resistant Portland Cement

Serial number	Testing items		Technical index
1	Loss on ignition		≤3.0%
2	Sulfur trioxide		≤2.5%
3	Magnesium oxide		≤5.0%
4	Insoluble matter		≤1.5%
5	Specific surface area		≥280m²/kg
6	Tricalcium silicate		≤50.0%
7	Tricalcium aluminate		≤3.0%
8	Setting time		≥45%
8	Setting time		≤600
9	Stability		Qualified
10	Flexural Strength	3d	3.0
10	Flexural Strength	28d	15.0
11	Compressive Strength	3d	6.5
11	Compressive Strength	28d	42.5
12	Sulfate Resistance		14d linear expansion rate ≤ 0.040%

Precautions 1. The concrete mix proportion shall be determined through trial mix. It is recommended that the cement consumption per cubic meter of concrete shall not be less than 300kg, and the water cement ratio shall be controlled at about 0.30;2. Cement and lime of other varieties shall not be mixed during use;3. It is not suitable for heat-resistant engineering and parts;4. If steam curing process is used to produce cement or concrete products, it is recommended that the steam curing temperature should not exceed 60 ℃.Packaging and storageIt is packed in PP bag, with a net weight 25kg/bag and shelf life of 3 months; it should be stored in dry and ventilated room with airtight bag, and should be protected from moisture and frost.