The benefits of concrete shotcrete 2
🔸 Speed of application 🔸
Whether with the dry or wet method, shotcrete dramatically reduces the amount of time you spend on the construction and maintenance of traditional concrete forms. Carrying out the shotcrete process is done quickly due to the quick spraying of concrete on the surface, and from this point of view, the needs of concreting will meet the cost and time well.
Concreting difficult areas /b>
Transporting concrete equipment to certain areas can be difficult, but shotcrete generally avoids this problem. There is no need to move the equipment next to the concreting site because a skilled specialist can concretize shotcrete concrete hundreds of meters away from the source. This feature is especially useful in concrete members with different geometric shapes or in difficult areas. Significant cost savings. For example, buying a combination pump can greatly reduce the cost of your equipment. This applies to both the initial cost of purchasing the equipment and its maintenance since you are only working on one piece of equipment. This saves labor costs because you can get things done faster.
ایر The properties of concrete shotcrete
Like regular concrete, the properties of shotcrete vary dramatically depending on water-cement ratio, aggregate quality, size and type, admixtures, cement type, and construction methods. Proper use of additives, fibers, silica fume and polymers can improve the properties of shotcrete. Depending on the specific needs, the properties of shotcrete raw materials and mixtures should be tested before use.
Shotcrete properties are as follows:
Compressive strength
In terms of compressive and bending strength, shotcrete can produce resistance equivalent to ordinary concrete. Compressive strength between 30 and 60 Nm/mm2 can be achieved. Relationships between water-cement ratio and compressive strength follow typical patterns. This means that in order to achieve high compressive strength, less cement than water is needed. . Shrinkage decreases in shotcrete with coarse grains and increases in shotcrete without coarse aggregates. Shotcrete containing silica fume tends to shrink more than shotcrete without silica. Failure is defined as toughness. Adding fibers to shotcrete can result in the product being able to carry more loads. The type, size, shape and amount of fiber can determine the amount of toughness. The use of toughness index in the load deflection test provides a reasonable means to determine and compare the performance of shotcrete.
