Layered pouring of concrete inclined plane is a common construction method, which is used for concrete structures with a certain slope such as slopes and steps. When pouring concrete inclined planes in layers, the following matters need to be noted:
1. Foundation preparation: ensure that the foundation of the inclined plane is solid and flat, and meet the design requirements. If needed, basic treatments can be carried out, such as cleaning, reinforcement, etc.
2. Layered planning: According to the construction requirements and design requirements, the layers are reasonably divided. According to the pouring height of the concrete and the slope of the inclined plane, the height and slope of each layer are determined.
3 Liner setting: Before pouring each layer, the liner needs to be set. The underliner can be made of foam board, plywood, etc., and is used to isolate different layers of concrete, as well as to maintain the levelness of the layers.
4. Pouring sequence: Determine the pouring sequence according to the construction plan. It is usually poured layer by layer from bottom to top to ensure that each layer of concrete is fully solidified and supported.
5. Pouring control: In the process of layered pouring, it is necessary to control the fluidity and uniformity of concrete. Vibrators can be used to vibrate to eliminate voids and ensure the compactness of the concrete.
6 Prevent cold joints: Pay attention to the setting of cold joints between each layer of concrete pouring. Cold joints can utilize waterproof tape or expansion tape to prevent cracking caused by changes in temperature and humidity.
7. Curing measures: After the concrete is poured, it needs to be cured in time. The curing time is generally a few days to a few weeks, depending on the type of concrete and environmental conditions, so as to ensure the gradual improvement and stability of concrete strength.
In addition to the above-mentioned precautions, it is also necessary to take corresponding safety measures during the construction process according to the requirements and design of the specific project, such as building suitable scaffolding and safety protection facilities to ensure the safety and smooth progress of the construction operation.
The general process of layered pouring of concrete inclined plane.
1. Foundation preparation: clean the surface of the inclined plane to ensure that the foundation is solid and flat, and meets the design requirements.
2. Design inclined plane layering: determine the height and slope of the layer according to the pouring height of the concrete and the slope of the inclined plane. Depending on the situation, the different layers can be separated by a gasket material.
3 Liner Setting: Before each layer is poured, the liner material is installed to isolate the different layers of concrete and maintain the levelness of the layers.
4. Prepare concrete: According to the construction plan and design requirements, prepare the required concrete materials, mainly including cement, aggregate, mortar, etc.
5 Pouring the first layer: Starting from the lowest layer, pour the concrete evenly into the inclined plane. Vibrating concrete with a vibrator to eliminate voids and improve compactness.
6. Control the thickness and slope: According to the design requirements, use measuring tools to check the thickness and slope of the concrete layer to ensure that it is consistent with the design requirements.
7. Pouring the next layer: After the first layer of concrete is solidified, the next layer is poured, and the construction of one layer is carried out at a time, and the layer by layer is clear.
8 Control cold joints: Pay attention to the setting of cold joints between each layer of concrete pouring. Use waterproof tape or intumescent tape to reserve cold seams.
9. Continue pouring in layers: Repeat pouring in layers until the required overall height is reached. After each layer is poured, it should be fully vibrated and evenly controlled.
10. Curing concrete: After the pouring is completed, the curing shall be carried out in time. According to the type of concrete and environmental conditions, appropriate curing time and measures are carried out to ensure the strength and stability of concrete.
The above process is only a general situation, and the actual construction process will change according to the specific engineering requirements, design plan and construction plan. In the process of construction, it is necessary to pay attention to safe operation, as well as adjust and control according to the actual situation, so as to ensure the smooth progress of construction and the achievement of quality.