Several concrete admixtures that are more suitable for road rapid repair materials

Several Concrete Admixtures that are more suitable for road rapid repair materials

Original article, Reproduction prohibited by polycarboxylate.cn
Dated Apr. 29, 2024

Keywords
Concrete admixture, road rapid repair materials, Calcium sulphoaluminate cement, quick-setting agent, amorphous calcium aluminate, lithium carbonate

The maintenance time of traditional concrete road repair is long, the efficiency is low, and it is easy to affect the traffic efficiency of the road. Using quick-repair materials to repair roads can complete the repair task in the fastest time.

The following are several known road repair materials:

1. Calcium Sulphoaluminate cement and ordinary silicate cement are used as base materials to achieve good rapid setting and early strength effects.

2. In addition to the basic sand and gravel, the aggregate also needs to add rubber particles made from waste tires. The flexibility of rubber particles can significantly improve the brittleness of concrete - such as concrete cracks, and at the same time reduce the amount of aggregate, killing two birds with one stone.

3. Other main admixtures include:

3.1 Amorphous calcium aluminate is currently the leading quick-setting agent product raw material in the world. In addition to the inherent characteristics of super-fast setting and super-early strength, it also has the advantages of low shrinkage, outstanding crack resistance, good anti-seepage effect, and good adaptability to low temperature environments.
3.2 Lithium carbonate, as a high-quality early strength agent, can improve the fluidity, fire resistance, mechanical properties, crack resistance, carbonization, and durability and bearing capacity of concrete.
3.3 Polycarboxylate superplasticizer, mainly improves the plasticity and flexibility of concrete.
3.4 Microsilica fume and fly ash can fill tiny gaps in concrete and enhance the strength of concrete.