Three-dimensional printing (3DP) in building industry has a number of important advantages, such as creation of various geometric forms without the need for molds, the ability to create complex elements, the possibility of automation, speed and a low amount of waste, the use of innovative materials, construction in layers of different materials, and more. So, 3DP is an effort to put digital manufacturing into practice, enabling a direct transition from building design / modeling (BIM) to 3DP. One of the important limitations in 3DP is the materials. Because printing is done in layers, it is important to take into account the hardening time of the material and its ability to stick to create a uniform structure. Another problem is the tolerance of the material to different types of solidification: melting, pressing. That's why there are methods for combining iron or polymer reinforcement. There are combined methods: 3D printed elements are used as prefab elements to make the building process more effective. This industry is one of the fastest growing manufacturing technology sectors covers all markets from aerospace and healthcare to construction and consumer products. This article provides some aspects of application in construction, materials and their compositions, as well as examples of the use of 3DP at buildings, structures, etc.
Keywords: 3D technologies in civil engineering and construction, materials for 3DP, 3D concrete printing, concrete polymer reinforcement, dispersive reinforcement concrete
Compositions and their properties for protective coatings based on liquid ebonite and water dispersion of CSPE were described. The experimental data of different testing are confirmed their high effectivity for corrosion protection.
Keywords: corrosion protection, liquid ebonite mixtures, oligobutadiene, water dispersion CSPE, service properties