How does silica fume affect concrete workability and bleeding?

It reduces bleeding significantly by consuming free water and blocking pores. While slump may decrease, the mix remains highly cohesive.

What is the bulk density range of the silica fume?

The bulk density varies from 130 kg/m3 (undensified) to 600 kg/m3 depending on the degree of densification in the silo.

for Hpc

Name: Factory Supply Microsilica/Silica Fume/Mircro Silica/ for Hpc
Brand: Gansu Mingruige Trading Co., Ltd.
SKU: 2060623465

Gansu, ChinaGansu Mingruige Trading Co., Ltd.

US$90.00

500 Tons

Product profile

Customization

Available

Type

Silicate Cement / Portland Cement

Strength Grade(Mpa)

Silica Fume

Model NO.

Microsilica

Mineral Composition

Portland Cement

Hardening Feature

Rapid Hardening

Heat of Hydration

Moderate Heat

Fineness

0~10um

Technique

Dry Process

Color

Grey

Silica Fume

92%

Transport Package

Jumbo Bag

Specification

sio2: 92% min

Trademark

MRG

Origin

China

HS Code

28112290

Production Capacity

90000tons

Key features

Ultrafine Particle Size: Average particle diameter of 150 nm, approximately 100 times smaller than cement particles.

High Silica Content: Contains 92% silica, serving as an effective pozzolanic material for concrete.

Enhanced Concrete Strength: Significantly improves compressive strength, bond strength, and abrasion resistance.

Corrosion Protection: Reduces chloride ion permeability, protecting steel from corrosion in harsh environments.

Oil & Gas Applications: Used for well bore grouting, leak repairs, and sealing depleted zones in oil operations.

Standard Compliance: Meets ASTM C1240 and EN 13263 specifications for cementitious mixtures.

Reduced Bleeding: Minimizes segregation and bleeding by consuming free water and blocking concrete pores.

High Specific Surface Area: Specific surface area ranges from 15,000 to 30,000 m2/kg for superior reactivity.

Company profile

Gansu Mingruige Trading Co., Ltd.

Gansu, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2021-04-22Nearest Port: Qingdao, TianJinAverage Response Time: ≤24hTerms of Payment: LC, T/T, PayPalInternational Commercial Terms(Incoterms): FOB, CFR, CIF

AI-Powered supplier vetting

SummaryGansu Mingruige Trading Co., Ltd. is identified as a Chinese trading company and manufacturer/factory operating in ferroalloys, coke, graphite, silicon-related products, and chemicals. The supplier reports ISO 9001 and GMP certifications, more than 10 production lines, 6–10 quality-control staff, and 41–50 years of R&D-engineer experience. It states annual output across several products, broad export-market coverage, self-operated import/export rights, and export sales representing 71%–90% of total sales. The supplier also describes organized purchasing, sales, quality-control, and finance departments, together with nationwide sales agencies and after-sales services. However, the provided information does not establish customer-specific cases, customization capabilities, or sufficient evidence to assess financial credibility. The stated production information is substantial, but the materials also identify the business as a trading company, so the precise allocation between owned manufacturing and trading...

Supplier typeThe supplier is explicitly classified as both a trading company and manufacturer/factory in one record, while another record identifies it as a trading company. It also reports a factory location in Tianzhu, Gansu, and operates more than 10 production lines, indicating manufacturing involvement, although the exact organizational scope of the factory is not fully clarified.

CertificationsThe supplier reports holding ISO 9001 and GMP certifications. These are explicit management-system certifications and provide positive evidence of formal quality and operational controls.

After-Sales capabilityThe supplier states that it has a sound plan for product after-sales service, an advanced sales-service concept, nationwide sales agencies, and a commitment to providing quality service. These statements support an after-sales capability, although no specific service procedures, response targets, or service records are provided.

Production capacityThe supplier reports more than 10 production lines, 6–10 quality-control staff, and stated annual outputs of ferro silicon, semi coke, silica fume, rare ferro silicon magnesium, and natural graphite. It also reports delivery within 15 working days during off-peak periods and one month during peak periods, supporting a substantial stated production and fulfillment capability.

Product Q&A

Q:What is the difference between silica fume and fumed silica?

They are different materials. Silica fume is a by-product of silicon alloy production with spherical particles, while fumed silica (pyrogenic silica) has a different production process, particle characteristics, and application fields.

Q:How does silica fume improve concrete properties?

It improves compressive strength, bond strength, and abrasion resistance through mechanical filling and pozzolanic reactions with calcium hydroxide. It also reduces permeability to chloride ions.

Q:What are the standard specifications for this silica fume?

The product complies with ASTM C1240 and EN 13263 standards for silica fume used in cementitious mixtures.

Q:Can silica fume be used in oil and gas operations?

Yes, it is used for primary grouting as a hydraulic seal in well bores and secondary applications like leak repairs and closing depleted zones.

Q:What is the silica content of this product?

The product contains 92% silica, making it a highly effective pozzolanic material.