Composite 42.5 Cement
description1
In addition to high strength, our Composite 42.5 Cement also has excellent durability, frost resistance, impermeability and corrosion resistance. It can adapt to various harsh construction environments, such as high temperature, low temperature, humidity and other areas, and extend the service life of the project. Its reasonable composite formula not only improves the performance of the cement, but also reduces the consumption of raw materials, which is more environmentally friendly and energy-saving, in line with the development trend of modern construction industry.
We have a complete quality inspection system, from raw material selection to production, packaging and transportation, every link is strictly inspected to ensure that the Composite 42.5 Cement delivered to customers is of stable quality and reliable performance. Whether you are a concrete mixing plant, a precast product manufacturer or a large construction enterprise, we can provide you with customized solutions and stable supply services to help you improve project quality and enhance market competitiveness.
Composite 42.5 Cement
No. |
Test Item |
Unit |
Standard Requirement |
Test Result |
Individual Judgment |
1 |
Fineness (80μm Sieve Residue) |
% |
≤8.0 |
5.6 |
Qualified |
2 |
Initial Setting Time |
min |
≥45 |
168 |
Qualified |
3 |
Final Setting Time |
h |
≤10.0 |
4.2 |
Qualified |
4 |
Soundness (Le Chatelier Method) |
mm |
≤5.0 |
1.8 |
Qualified |
5 |
3-day Compressive Strength |
MPa |
≥17.0 |
21.5 |
Qualified |
6 |
28-day Compressive Strength |
MPa |
≥42.5 |
48.9 |
Qualified |
7 |
3-day Flexural Strength |
MPa |
≥3.5 |
4.1 |
Qualified |
8 |
28-day Flexural Strength |
MPa |
≥6.5 |
7.3 |
Qualified |
9 |
Loss on Ignition |
% |
≤4.0 |
3.2 |
Qualified |
10 |
Sulfur Trioxide (SO₃) |
% |
≤3.0 |
2.5 |
Qualified |
Supplementary Indicators of Composite 42.5 Cement
No. |
Test Item |
Unit |
Standard Requirement |
Test Result |
Individual Judgment |
1 |
Bulk Density |
kg/m³ |
≥1300 |
1380 |
Qualified |
2 |
Water Retention Rate |
% |
≥80 |
85 |
Qualified |
3 |
Frost Resistance (25 Freeze-Thaw Cycles) |
- |
Mass Loss ≤5%, Strength Loss ≤25% |
Mass Loss 2.1%, Strength Loss 8.5% |
Qualified |
4 |
Impermeability |
MPa |
≥P8 |
P10 |
Qualified |
Make An Appointment


Send
Email
Phone




