Research On The Technique Of High Performance Color Stamped Decorative Concrete

The requirements of city environmental beautification and the developments of building decoration and fitment material offer widely foreground for concrete's application.The technique of high performance color stamped decorative concrete is studied in this paper. The core of this technique consists of two aspects. One is the research and application of High Performance Color Hardener (abbr. HPCH), and the other is the study and explorations of stamped construction technique. The primary study contents as follows: acquire the superhigh strength and excellent duration by adoption of the confecting technique of high performance concrete; reduce the penetrability of color facing layer and extend the fixed number of serve years of color stamped facing layer to a great extent by the basis of the compound optimum principle of materials and the technique of surface managing and coating; realize onetime quick construction and tridimensional modeling of facing and foundation by printing principle and mould and by using subtly the flowing-changing characteristic effacing layer.The main works and research consequences of this paper as follows:By the basis of pigmentation mode of concrete, texture shape-taking and the factor of duration damage, whole structure and design principle of high performance color stamped decorative concrete is determined. This structure is a three-layer construct consisting of pigmentation of surface, onetime stamped with base concrete and surface coating. And a design principle of excellent performance on ion transfer resistance, wear resistance and corrosion resistance is brought forward.The physical chemistry performances of pigments and their application in cementitious materials are studied. The sorts and optimum quantities of them are determined through test and comparison. By studying reciprocity of materials, the color system of HPCH is confected. And production fashion is selected optional for assurance of the material character of HPCH.The HPCH material, in which the compound technique route of polybasic components is applied, has better properties such as high workability, high durability, low ion transference rate and so on. In this paper, the performances of macroscopic physical mechanics, durability, and microstructure are analyzed and studied. The results of macroscopic properties indicate that the workability and relevant physical mechanics are matched best with the scientific introduction of auxiliary cementitious materials. At the same time, the compatibility between stainedmaterials and cement-basic materials is improved, as well as the resistant abilities of the ions transference and environmental corrosive damages.In the experiments, the contrastive system is the comparison of HPCH material with the traditional decorative concrete and foreign materials of the corresponding period. Through a series of experiments, the aging-resistance ability of HPCH is increased one grade compared with the traditional materials, and the equal level with the foreign materials.The results of dry-wet circle test and quick test for chloride permeability show that the ability of efflorescence resistance of HPCH is better. On the condition of 25 times circulation of dry-wet, there are a few non-development white spots just on the corner of specimens. For the traditional materials, great area efflorescence emerges and develops quickly along the arris. It is known from quick test for chloride permeability that HPCH has good ions permeability resistance. The electric quantity through it is only 49.68% of the traditional materials and 25.34% more than the foreign productions. The performance of HPCH is 1-2 times more than the traditional materials on the resistant abilities of wearing, chemical corrosion and freezing.Based on the testing of X-ray, pore structural characteristic and SEM pictures analyses, the property varietal law of HPCH is ascertained, which is influenced by the components and structures. From the results, it is known that the structures and components are cha...