Study On The Production And Performance Of The Color Concrete

Chromatic adornment concrete (CAC) is a product of the green building materials’ sustainable development.the widespread use of it not only can change the appearance of the concrete boring single shortcomings, and still can reduce a lot of pollutants, to protect the environment. The color concrete have three ways to make: overall coloring, surface coloring and chemical dyes. According to the practice of large buildings construction, choose the overall coloring to preparation of concrete, and the color concrete are divided into two series:gray series and color series. Gray serise is to use different cement, and different mineral admixtures; Color series is joined different paint additives in the white cement to change the appearance of the concrete. After mix out the set requirements color concrete, and study on the performance of the color mortar and color concrete, then confirmed the color concrete can satisfy some project requirements. The color durability by ultraviolet radiation aging test to prove, and adopt many ways to improve color of durability. Finally summarizes the test process, and draw for color concrete’s construction technology. In this paper, the results indicate is:1) Through respectively join mineral admixtures, mainly including slag and rice gray, into the ordinary Portland cement、slag cement and white cement can successfully make gray series meet the design requirements; and put inorganic pigments or organic pigments into white cement can successfully make color series meet the design requirements. And according to this, makes a gray series and color series of concrete, and the appearance of the concrete even blance;2) From the mechanical properties experiments of the color mortar and color concrete, gray series mortar and concrete is not much different from the contrast samples, can satisfy the design strength requirements(C40). But to join the inorganic pigment and organic pigment’s mortar and concrete, in addition to join ferricoxide yellow pigment of concrete perfaomance can satisfy the design requirement(C30), the rest didn’t meet the requirements, its different from the master sample, so it explain the pigments join in concrete is harmful, and degree of harmful closely related with the join pigment;3) The appearance color of the color concrete won’t be washed out in the rains. In the color concrete, join different pigment have different durability, inorganic pigments durability rather than organic pigments. Color fades, not only with paint itself has the very big relations, but also with the concrete strength, the higher of the strength, the better of pigment durability;4) Through change of the curing time and adjust the material composition, can increase the strength of concrete, so as to improve the color ultraviolet radiation aging resistance ability; Before joining inhibitor, anti-aging agents can absorb a lot of ultraviolet light, so as to improve the ability of pigment anti-aging;5) According to the characteristics of the color concrete, and compared the ordinary concrete, and found the construction technology of the color concrete.