Abstract
A method is proposed for assessing best mix ratio for concrete printing. The obtained mix which is indented to flow via a nozzle for building a layer upon layer construction structures. The printing method consists of a gantry system which can be controlled with the help of a digital computer. This method is nowadays used for building structural and architectural components. Thus the traditional form work is avoided. Buildability and Extrudability are some of the important flow concrete properties That have to be considered and the relationship with Workability is evaluated. This property depends on the mix ratio and the quantity of admixtures like superplasticizer, polypropylene fibers and silica fume. Hydrated sodium silicate is also added for quick settlement which is essential for the layer by layer process.
Highlights
Concrete printing has proved to be a new breakthrough in the field of construction [1]
This type of printing is similar to the technology used in the Additive Manufacturing
The designed model is uploaded in the software, which is the slicing software
Summary
Concrete printing has proved to be a new breakthrough in the field of construction [1]. Just as plastic is used to print an object layer by layer in Additive Manufacturing, concrete is mixed and poured layer by layer and concrete structures are built [2] This type of construction is known as free form construction. The above table shows the experimental analysis [19] which is proven that the best mix for printing concrete is Trial 6 from the orthogonal array analysis. This experiment gives the better strength of 9.7 N/mm within a short span of 7 days
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