You can refer to and learn to improve the fine control level of project quality.
(5) After each construction process is completed, self inspection and process handover inspection shall be carried out in time.
After passing the acceptance, start large-area construction, take protective measures for the waterproof layer, reasonably arrange the construction process, reduce cross operation and prevent the damage of the waterproof layer.
3 pile head treatment the pile head shall reach the design elevation, remove the dust and dust on the concrete surface, wash it with clean water, and level it with polymer cement mortar.
Construction conditions of base plate waterproof: the base plate waterproof can be constructed only after the cushion is accepted, the base layer of base plate waterproof shall be dry, and the internal and external corners such as water collecting well and column pier corner shall be made into arc corners.
Base plate waterproof construction process site safety technical disclosure → base course cleaning → pile head waterproof treatment → heating non curing rubber asphalt → brushing 3.0 thick non curing rubber asphalt waterproof coating → pasting 2.0 thick EPDM waterproof coiled material → isolation layer (10 thick low-grade mortar) Construction → 50 thick C20 fine aggregate concrete layer → project quality acceptance 1 on-site technical disclosure.
4 waterproof coating construction the surface of waterproof coating base course shall be basically dry without defects such as pores, unevenness, honeycomb and pitted surface.
(3) After the coil is laid, it shall be inspected according to the specifications and standards to visually check whether the bonding of the overlapping edge is uniform, or spot check and tear with force to check whether the overlapping is firm.
(6) The waterproof works after completion shall be impervious and leak free.
During construction, the material shall be evenly applied to the wet concrete foundation surface with a trowel or a hard bristle brush according to the material requirements.
(4) The detailed structure nodes of the project shall be handled in place according to the design requirements.
Additional layers shall be paved at the corners of detail treatment, and the additional layers shall be coiled materials of the same material as the large surface.
The waterproof construction of the foundation slab of the project adopts rubberized asphalt non curing waterproof coating and EPDM waterproof coiled material.
Before waterproof construction, the surface of the concrete base course cushion shall be firm, dense, flat and clean, and its flatness, appearance quality, dry and wet degree and cleanliness shall meet the requirements.
(2) The base surface of concrete or other materials shall be flat, continuous and solid without looseness, falling off, cracks and other defects, otherwise it shall be repaired completely in advance.
2 base course treatment the base course surface shall be free of hollowing, cracking, sanding, peeling and other defects to ensure that the concrete surface is flat and smooth.
The waterproof coating shall be brushed or sprayed in layers, and the coating shall be uniform without missing brushing and coating, and the joint width shall not be less than 100mm.
A layer of cement-based permeable crystalline waterproof coating shall be applied within 250mm around the pile head and the pile core.
The coiled material shall be trial laid in place first, and the actual laying can be started only after the shape is cut correctly as required.
Acceptance criteria (1) the quality, specification and main physical properties of coiled materials entering the construction site shall meet the requirements of design and corresponding standards.
Check the coating thickness on site according to the drawing requirements.
(2) After laying, the parts directly exposed to the sun for more than one week shall be covered with plastic cloth or other materials.
(3) In addition to clarifying the technical and quality requirements in the construction organization design of waterproof works, the operation team must adhere to the pre shift safety construction education and regular safety production inspection to ensure that no safety accidents occur…
How to construct the waterproof of foundation slab? Standard process example! Based on the project example, China Construction Eighth Engineering Bureau shows the waterproof construction method of the foundation slab.
5.
Finished product protection (1) after the acceptance of the project, it is strictly prohibited to drill holes, drill holes and damage the waterproof layer after the acceptance.
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This paper introduces the construction process and quality control, as well as the main technical indicators and acceptance standards of the process.
The empty laying method shall be adopted for large-area laying of coiled material and large-area pasting of self-adhesive coiled material.
When laying coiled material, pay attention to alignment with the datum line at any time to avoid deviation and difficult to correct.
If necessary, the overlapping part can be cut on site for bonding strength test.
The overall paving sequence of coiled materials for coiled material construction is from high span to low span, from far to near at the same height, and the paving of the same facade starts from high to low.
According to each construction difficulty and technical node on the site, demonstrate and disclose to the construction personnel, optimize the waterproof detail method, and use the scheme node method to guide the construction to ensure the feasibility of scheme implementation.
7 after passing the quality acceptance and self inspection, report to the supervisor and Party A for acceptance.
