What Are The Rules Of Shotcreting?

Shotcrete is one of the most commonly used ways of applying concrete among concrete contractors. It has become popular mainly because of its easy-to-use characteristics and durability.

But keep in mind that not everyone can use the shotcrete method to apply concrete, only certified concrete contractors will be able to use the shotcrete methods because they are aware of all the rules and regulations and can easily use this method.

Also for achieving the best results in concrete spraying there are some essential prerequisites that you should follow. Number one is the mix design, all the shotcrete components such as cement, fine material, water, chemical additives, and fibers form a mixture that determines the quality of the cement finish. Therefore the mixture should be made with utmost precision and care to get the best results.

Another common critical aspect for getting the best results is the correct application technique. It is important to make sure that the shotcrete causes minimal adhesion and rebound to the surface and all of this can only be achieved by hiring a top-rated concrete contractor.

If you're choosing the shotcrete method then keep in mind that there are some rules that you will need to follow in order to get the best results. In this article, we will outline the top 5 rules of shotcrete that will help you achieve maximum operator safety and the best results.

Rule 1: Clean The Surface Before Spraying

The first and the most vital rule of shotcrete is to clean the surface before spraying concrete on it. If you are using the shotcrete method for an underground project, then to prepare its surface you will first need to evaluate the risk of falling rocks and loose materials.

Before applying concrete all the debris and loose materials need to be removed from the surface and it has to be cleaned from dust using water or air.

If the surface is not cleaned and you use the shotcrete method, the surface will become bumpy and uneven. If the concrete is shot on the surface with rocks, loose material, and dust it will not form a smooth surface.

A certified concrete contractor always cleans the surface before applying concrete hence make sure you hire a professional concrete contractor for your shotcrete project.

Rule 2: Fill All The Cracks And Holes

The next important rule that you need to follow while applying shotcrete is that you need to fill out all the holes and cracks on the surface.

Before you apply the first layer of concrete make sure that you even out the surface by filling all the cracks and holes.

This is one of the most important rules of applying shotcrete no matter which surface you are using it on, you need to make sure that all the cracks and holes are properly sealed.

Because, if the holes and cracks are left open, they will hamper the durability and application of shotcrete and after some time, you will see holes and cracks in your surface.

Therefore, make sure to hire a top-rated shotcrete contractor, as only a professional will closely examine the surface and fix all the cracks and holes before applying the shotcrete.

Rule 3: Apply Concrete In Layers

Always remember that shotcrete should be applied in layers. When you are using the shotcrete method make sure that the application of the concrete layers starts from the bottom of the surface and continues upwards.

The first layer of shotcrete serves as the excavation support layer and as an adhesive bridge for the upcoming layers.

The thickness and number of shotcrete layers depend on the job site requirements and the desired homogeneity of the shotcrete finish.

Applying shotcrete is a tough job that requires precision and skills, hence make sure that you hire a professional concrete contractor for all your structural concrete projects.

Rule 4: Always Maintain A Distance Of 1-2 Meters Between The Nozzle And The Surface

The impact of the force that guarantees the adhesion of shotcrete to the surface it is sprayed on is determined by the distance between the nozzle and the substrate.

If the distance between the nozzle and the surface is too short it will create a rebound and if the distance is too great, the impact force will become too weak and will not provide proper adhesion of shotcrete.

Hence always hire a professional concrete contractor as they know how to use the shotcrete process properly.

Rule 5: Clean The Shotcrete Machine After Application

Another common rule of applying shotcrete is to clean the shotcrete machine immediately after application.

A vital part of machine cleaning and maintenance is preventing the accumulation of material in the concrete pump, nozzle, hoses, and additive pump.

Cleaning all such parts is important as it helps you avoid the increased discontinuity of flow and will guarantee smooth operation.

Hence make sure that after shotcrete application you clean all the parts of the machine because if the concrete dries it will become difficult to clean the machine.

Some ways assist you in controlling the oil filtration system and industrial lubricate from contamination and degradation.