A. Condensation hardening is fast, and the early strength and late strength are high. It is suitable for high-strength concrete and prestressed concrete engineering with early strength requirements, winter construction concrete, and important structures above and below ground.
B. It has good frost resistance and is suitable for concrete projects subjected to repeated freeze-thaw cycles in the range of water level rise and fall in severe cold regions.
C. The hydration heat is large and should not be used for mass concrete projects, but it can be used for low temperature season or winter construction.
D. Poor corrosion resistance, it is not suitable for projects that are often in contact with corrosive media such as flowing fresh water or sulfate, and is not suitable for projects that are often in contact with corrosive media such as seawater and mineral water.
E. Poor heat resistance, not suitable for concrete projects with heat resistance requirements.
F, good anti-carbonization performance, suitable for environments with high CO2 concentration in the air, such as foundry workshops.
G, dry reduction, can be used for concrete works in dry environments.
H, good wear resistance, can be used for pavement and ground engineering.
Such cements include various Portland cements that are not blended or blended with materials. China is divided into the following five categories according to the blending conditions of the mixed materials.
Pure cement Portland cement
2. Ordinary Portland cement
3. Slag Portland cement, pozzolanic Portland cement, fly ash Portland cement
4. Composite Portland cement
Activated Carbon is a very small carbon particle with a large surface area, and there are even smaller holes in the carbon particle-capillary. This capillary has a strong adsorption capacity, because of the large surface area of the carbon particles, it can be in full contact with gas(impurities). When these gases(impurities) touch the capillary, they are adsorbed and act as purifiers. The study of the surface area of activated carbon is very important. The detection data of the specific surface area of activated carbon is only true and reliable by using the BET method. At present, there are many instruments in China that can only be detected by direct comparison methods. Now it is also in China. It was eliminated. At present, multi-point BET method is used for specific surface area testing at home and abroad. The specific surface area measurement standards formulated at home and abroad are based on BET test methods. See the Chinese National Standard(GB/T 19587-2004)-BET principle for the determination of the surface area of solid substances. The specific surface area detection is actually a more time-consuming task. Due to the different adsorption capabilities of samples, the testing of some samples may take a whole day. If the test process is not fully automated, the testers can not leave at all times. And to be highly focused, observe the dashboard, control the knob, and inadvertently lead to the failure of the test process, which will waste a lot of valuable time for the tester. The F-Sorb 2400 ratio surface area tester is an instrument that can truly achieve the BET method detection function(with a direct comparison method). The more important F-Sorb 2400 ratio surface area tester is the only fully automated and intelligent surface area detection device in China so far., Its test results are highly consistent with international standards and have good stability. At the same time, it reduces human error and improves the accuracy of test results.
Adsorption Activated Carbon,Dry Activated Carbon Desiccant,Graphite Particles Carbon Agent,Capacit Granular Activated Carbon
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