Research and Application of Certain Materials 3d Printed Concrete Grade

3D printing technology is a modern technology that allows the production of products with complex structures directly from 3D models with computer support. The application potential of this technology in the construction sector is considered to be huge with the aim of improving traditional construction technology, using “green” materials in concrete production, reducing human resource needs, reduce waste and aim for sustainable development. However, the materials used to mix concrete have a great influence on the printing process. The paper approaches the study of the application of several qualitatively oriented 3 D printed concrete-mixing materials, for evaluation purposes affects materials to some features of 3D printed concrete: (1) Effects of fly ash come extrusion ability of printed concrete; (2) Effect of crushed sand on ability to maintain the shape of printed concrete layer; (3) Effect of PP fiber on uniformity and shrinkage reduction of printed concrete