Whether the cement rockery can be simulated depends on the material, color and construction technology level of the plastering layer on the stone surface To simulate, we need to choose the same color as much as possible, and plaster according to the heart, and carefully create the cracks and corners on the stone surface, so as to make the stone surface have a real sense of hierarchy, so as to achieve the actual effect of "if".
The cement mortar for plastering shall be colored according to the original color of rock imitation type, and some color paste shall be added.
If you want to imitate the grayish black rock stratum, you can add carbon black to the general dark gray cement mortar, add wall mud to the black gray cement mortar, imitate the light yellow slate, add green lemon iron oxide yellow to the cement mortar, and imitate the blue purple slate, be sure to use iron oxide red to adjust the cement mortar into the purple sand pot color, while the cement mortar imitating the bluestone slate can add chromium oxide green and cobalt blue to the cement mortar, and when configuring the colorful cement mortar, The color of cement mortar shall be slightly darker than that of the design scheme, and the color will be slightly lighter after forming the diagenetic layer.
The concrete raw material of plastic stone rockery is building reinforced concrete, and the fundamental reason for the crack of plastic stone rockery is concrete. After the plastic stone rockery is formed, before the initial compressive strength is not sufficient, it is closed due to factors such as wet expansion and dry shrinkage, chemical shrinkage, thermal expansion and cold shrinkage of concrete. Unrestrained cement concrete usually causes cracks.
Due to the large structural specifications and the water binder ratio of concrete, the temperature in the plastic stone rockery body increases, and the calorific value is not easy to release immediately, resulting in a great temperature difference. The relatively large temperature change and difference cause the change of concrete volume. Because the plastic stone rockery is subject to tube bundles at different levels, it is not allowed to expand and retract at will. When the tensile stress caused by temperature deformation exceeds the compressive strength of cement concrete, It will cause cracks. If you want to clear the cracks, you must start from reducing the dry shrinkage of cement concrete.
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