Why choose a shotcrete machine?
November 08, 2018
Features and benefits:
Concrete is often described as a material, but not as a process. The materials produced by the wet and dry processes have excellent high quality conventional concrete hardening properties such as high strength, low permeability and high durability.
Although the hardening characteristics are similar to those of conventional shotcrete cast-in-place concrete, the nature of the shotcrete pouring process provides additional benefits such as good bonds with bottom and instant or fast capabilities, especially in complex forms or shapes.
The characteristics of both and the wet spray during the drying process can be further enhanced by adding different additives, admixtures, etc.:
♦ Silica powder - provides reduced permeability, increased compressive strength and flexural strength, increased alkali and chemical resistance, improved resistance to water washout, reduced levels of rebound, and allows for thicker single pass applications;
♦ Air entraining admixture to improve the pumpability process and freeze-thaw durability and adhesion of wet-sprayed concrete during wet and dry processes;
♦ Fiber control cracking, increase toughness value, and improve impact energy absorption; and
♦ Accelerate the ability to place under adverse conditions, allow for thicker single applications, increase productivity, and reduce the incidence of vibrations to the vibrating structure.
The many advantages in the shotcreting process are particularly evident, from a sustainability perspective. Unlike many sustainable development requirements, which are based on political or social ideals, it is often difficult to quantify and confirm that the sustainability advantages of the shotcreting process directly and positively affect the economic aspects of the project, falling behind with traditional business decisions and other materials, Labor, and save time and quality.
In addition to the following "Top Ten" sustainability advantages of shotcrete, the asa'ssustainability page provides a wealth of topical information.
1. The template can save 50 to 100% more than the traditional cast-in-place construction;
2. The template does not have to be designed with internal pressure;
3. The requirements for complex shapes are few, if any, templates;
4. Saving or eliminating of cranes and other equipment;
5. Labor saves at least 50% of the application in repair;
6. New construction speed, saving 33 to 50%;
7. Repair, reduce or eliminate downtime and speed;
8. Better bonding to the substrate to improve durability;
9. Adaptive repair is not the surface of other processes; and
10. Spaces with limited capacity, accessible to hard-to-reach areas, including overhead and underground.