{"id":50,"date":"2020-05-22T17:00:00","date_gmt":"2020-05-22T10:00:00","guid":{"rendered":"https:\/\/lethycorp.com\/?p=50"},"modified":"2023-08-25T10:31:59","modified_gmt":"2023-08-25T03:31:59","slug":"structure-of-form-of-concrete-structure","status":"publish","type":"post","link":"https:\/\/lethycorp.com\/en\/san-pham\/coc-btct-khuon-coppha-dinh-hinh.html","title":{"rendered":"Reinforced Concrete Piles Cast Using 3-Sided Shaped Coppha Mold"},"content":{"rendered":"

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Reinforced Concrete Piles Cast Using 3-Sided Shaped Coppha Mold<\/h6>\n\n\n\n
1. Cast pile type:<\/span>

According to the detailed pile design,\u00a0RC piles<\/span><\/a><\/span><\/p>

+ Tip pile type (C1)<\/span><\/p>

+ Body pile type (C2)<\/span><\/p>

2. Prepare the pile casting ground:<\/span><\/p>

With an area of 9,400 m2\u00a0<\/sup>Land used, of which: - Steel processing factory area is 1,200 m2<\/sup>\u00a0with full machinery and equipment for production such as cutting, bending, punching, corrugated iron cutting, compressing machines... - Yard area of 8,200 m2<\/sup>\u00a0production, molding and drying of concrete; More than 200 sets of shaped pile casting molds made of steel and T-gauge glass<\/span>from 250x250x12000 to 500x500x12000. Before pouring concrete, the surface must be cleaned and all piles of other constructions must be gathered in one position at the inner corner of the yard.<\/span><\/span><\/p>

\u00a0<\/span>3. Equipment used for casting reinforced concrete piles:<\/span><\/p>

\u2013 Chinese 500 liter concrete mixer<\/span><\/p>

\u2013 Korean + Chinese water pump<\/span><\/p>

\u2013 Vietnamese welding machine<\/span><\/p>

\u2013 A-shaped crane Q = 5 tons.<\/span><\/p>

\u2013 Chinese compactor<\/span><\/p>

\u2013 Chinese bending cutting machine<\/span><\/p>

\u2013 Steel formwork types 200, 250, 300,350<\/span><\/p>

4. List of main supplies:<\/span><\/p>

\u2013 Cement: Joint venture, Ha Tien, Sao Mai\u2026.<\/span><\/p>

\u2013 Steel straps: according to design.<\/span><\/p>

\u2013 Main steel: according to design<\/span><\/p>

\u2013 Steel plate: according to design<\/span><\/p>

\u2013 Golden sand: Dong Nai\u2026.<\/span><\/p>

\u2013 Stone 1\u00d72: upon request<\/span><\/p>

\u2013 Water: Use drilled well water through a filtration system that has been tested for stable water for long-term use.<\/span><\/p>

5. Formwork work:<\/strong><\/span><\/p>

\u2013 Use shaped steel formwork with full support accessories, supports, etc., the surface of the formwork must be flat and coated with a layer of non-stick waste oil. The surface of the pile casting yard must be flat, smooth and coated with non-stick waste oil.<\/span><\/p>

\u2013 Steel formwork must be square with the ground surface, supported by a shaped system and adjusted in size with wooden wedges, the distance of the posts is 1.5 \u00b8 2 meters.<\/span><\/p>

\u2013 Formwork with steel or wooden ends is smoothed to create a flat surface and must be perpendicular to the formwork on both sides.<\/span><\/p>

6. Reinforcement fabrication and erection work:<\/strong><\/span><\/p>

\u2013 The main steel reinforcement is straightened and cut to the correct size, ensuring the steel is of the correct design type.<\/span><\/p>

\u2013 Stirrup reinforcement is pulled straight by winch, cut by bending cutter, bending table or machine according to the design size, stirrup spacing meets design requirements.<\/span><\/p>

\u2013 The steel belt is connected to the main steel with a steel wire tied 1 cup.<\/span><\/p>

\u2013 The main steel is connected to the pile head detail box by welding, using Viet Duc welding rods.<\/span><\/p>

\u2013 The pile head detail box is machined to ensure that the four edges of the pile face must lie on the same plane, ensuring it is square according to the design size.<\/span><\/p>

\u2013 The pile reinforcement is processed and erected for each cage according to the design and is accepted by supervisor A before being installed into the formwork.<\/span><\/p>

7. Concrete piles:<\/strong><\/span><\/p>

\u2013 Concrete for casting piles will be used with a 500 liter mixer, mixed according to the designed concrete mix.<\/span><\/p>

\u2013 The speed of the mixer and crane moving to the location where concrete needs to be poured, both going and returning, is \u00b3 8 minutes.<\/span><\/p>

\u2013 Sand and stone before mixing concrete must be clean, free of impurities, and tested to check particle composition. Use a 1.5 KW compactor to compact concrete piles, compact wherever the concrete is poured, and use a trowel surface to finish the surface.<\/span><\/p>

\u2013 The outside surface of the pile must be flat and smooth. The pile head plane must be smooth and perpendicular to the longitudinal axis of the pile. For tip sections, the tip of the pile must coincide with the center of the pile.<\/span><\/p>

\u2013 During the process of pouring concrete, the pile must regularly take samples for testing according to regulations.<\/span><\/p>

\u2013 Curing concrete piles after casting is done using the natural curing method. After pouring concrete for about 4 \u00b8 6 hours, when the concrete surface is firm and does not sink with hand pressure, proceed with watering for maintenance. . Continuous curing time is at least 3 \u00b8 7 days depending on wet or dry weather, the following days always keep the structure in a moist state.<\/span><\/p>

\u2013 When concrete reaches 25 % design strength (after 12 - 16H\u00a0<\/sup>according to the prescribed experiment) then proceed to dismantle the formwork. Use red paint to write on the pile head and face: name of pile section (C1; C2), date of pile casting.<\/span><\/p>

8. Measures to ensure quality and progress<\/strong>:<\/span><\/p>

Construction complies with normative processes in basic construction, ensuring Vietnamese standards according to the following types of work:<\/span><\/p>

\u2013 TCVN 4055 \u2013 1985: Construction organization.<\/span><\/p>

\u2013 TCVN 4453-1995: Entire concrete and reinforced concrete structures \u2013 Rules for construction and acceptance.<\/span><\/p>

\u2013 TCVN 5592-1991: Heavy concrete \u2013 Natural curing requirements<\/span><\/p>

\u2013 TCVN 4252 \u2013 1988: Rules for construction and acceptance \u2013 Procedures for establishing construction accounts.<\/span><\/p>

\u2013 TCVN 1770 \u2013 1986: Construction sand \u2013 Technical requirements<\/span><\/p>

\u2013 TCVN 1771 \u2013 1986: Construction crushed stone \u2013 Technical requirements<\/span><\/p>

\u2013 TCVN 1651 \u2013 1985: Construction steel \u2013 Technical requirements<\/span><\/p>

\u2013 TCVN 4586 \u2013 1987: Water for concrete and mortar \u2013 Technical requirements<\/span><\/p>

During the construction process, the unit strictly implements the acceptance process as follows:<\/span><\/p>

\u2013 Acceptance of steel reinforcement \u2013 Acceptance of formwork \u2013 Pouring concrete.<\/span><\/p> <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Contact information:<\/strong><\/p>\n\n\n\n