Mga pamamaraan para sa pagsubok ng pagganap ng dry powder reinforcers at mga kaugnay na pamantayan
Dry powder reinforcer ay isang additive na ginagamit sa kongkreto, semento at iba pang mga materyales sa gusali, na maaaring mapabuti ang lakas, durability and stability of materials. Usually include silicate enhancers, calcium based enhancers and organic enhancers and other types. Silicate reinforcing agents can enhance the early and long term strength, durability and impermeability of concrete and cement. Calcium based reinforcer can promote cement reaction and increase its strength and durability. Organic reinforcing agents can improve the ductility and durability of concrete and cement and reduce problems such as cracking and cracking.
Test performance and standards
The following are the main properties of dry powder reinforcer to be tested and the corresponding detection methods:
| Pagganap | Item of inspection | Paraan ng pagtuklas |
|---|---|---|
| Increase in strength | Compressive strength, lakas ng paghatak, lakas ng flexural | GB/T 17671、GB/T 50081、GB/T 50082 |
| Durability of life | Impermeability, Paglaban sa Pagsusuot, paglaban sa panahon | GB/T 50082、GB/T 50083、GB/T 50208 |
| Katatagan | Expansion rate, shrinkage rate, hardening time | GB/T 50119、GB/T 17671、GB/T 50081 |
Bukod pa rito, depending on the type of dry powder reinforcer, other specific properties may need to be tested, such as calcium based reinforcer to test its promotion effect on cement reaction.
Mga pamamaraan para sa pagsubok ng pagganap ng dry powder reinforcers at mga kaugnay na pamantayan
Paraan ng pagtuklas
The following are the main properties of dry powder reinforcer to be tested and the corresponding detection methods:
Increased strength:
Compressive strength, tensile strength and flexural strength can be measured by conventional mechanical test methods. Kabilang sa mga ito, GB/T 17671 “Cement strength testing method” is a commonly used compressive strength testing method; GB/T 50081 “Standard test method for Mechanical Properties of reinforced concrete” and GB/T 50082 “Standard Test method for Mechanical properties of Concrete” are used to determine the tensile strength and flexural strength of the method.
Tibay ng buhay:
Impermeability, wear resistance and weather resistance are three important durability properties of dry powder enhancers. Impermeability can be evaluated by hydraulic test, such as the membrane penetration test method in GB/T 50082; Wear resistance can be tested by wear testing machine, tulad ng GB/T 50083 specified in the concrete wear resistance test method; Weather resistance needs to be assessed by long-term exposure tests in natural or artificial climate environments.
Katatagan:
Mga pamamaraan para sa pagsubok ng pagganap ng dry powder reinforcers at mga kaugnay na pamantayan
The stability of dry powder reinforcement includes expansion rate, shrinkage rate and hardening time. The expansion rate and shrinkage rate can be tested by the expansion and contraction test methods in GB/T 50119, and the hardening time can be measured by various methods, such as compaction test method, microscopic analysis method, atbp.
In addition to the test methods listed above, specific test methods may be required for different types of dry powder reinforcers, such as calcium based reinforcers to test their promotion of cement reaction. Kaya nga, the detection method needs to be selected according to the specific type of dry powder enhancer.