I. Description of preparation
1.1 Preparation basis
1, Huai'an Ping'an Real Estate Development Co., Ltd. provided by the Jianghuai People's Community Phase II 15# building project drawings and construction contract;
2, "Unified Standard for Quality Acceptance of Construction Works";
3, "Construction Project Safety Management Regulations";
< p>4, the second phase of jianghuai people's district 12#, 15#, 18# building project construction organization design.Second, the project overview
2.1 Construction unit: Huaian Ping'an Real Estate Development Co.
2.2 Name of the project: Jianghuai People's Community Phase II 12#, 15#, 18# building project.
2.3 Project Location: North of Beijing West Road and East of Beijing North Road in Jianghuai Renjia District
2.4 Design Unit: Beijing Zhongwaijian Architectural Design Co.
2.5 Supervision Unit: Huai'an City Zhongsheng Construction Engineering Supervision Co. 2.6 Construction Unit: Huai'an Branch of Zhejiang Xintianyi Construction Co.
2.6 Construction Part of the project overview
Jianghuai People's District Phase II 12# building project, located in the east side of the district 2# building, the foundation is a strip foundation, the main body is a 6-storey frame structure, shaped section frame columns; attic roof is a sloped roof. The ±0.000 is equivalent to the Yellow Sea elevation of 14.100m.15# building project, located in the northeast side of the 5# building in the district, the foundation is strip foundation, the main body is 6-story frame structure, shaped section frame columns; the attic roof is sloped roof.15# building ±0.000 is equivalent to the Yellow Sea elevation of 15.800m.18# building project of Jianghuai people's neighborhood, phase II, is located in the east of the 5# building in the district.18# building The foundation is raft slab foundation; the main body is 6-story frame structure, shaped cross-section frame columns; the attic roof is sloped roof, ±0.000 is equivalent to the Yellow Sea elevation 15.800m.JHH second-phase 12#, 15#, 18# building exterior wall insulation using ZMBW composite multi-functional high-performance thermal insulation mortar.
Three, construction equipment configuration
According to the actual situation and engineering characteristics, working environment, construction schedule, the implementation of dynamic management, equipped with equipment.
Four, construction methods and points
4.1 exterior wall insulation project construction sequence:
Door and window frames around the plugging joints-→ wall cleaning-→ hanging vertical, set square, plaster cake, punching tendons-→ play the gray layer of the control line-→ Watering and pre-wetting -→ rabbit interface treatment agent -→ wipe the first thermal insulation mortar -→ watering maintenance -→ wipe the second thermal insulation mortar -→ check the flatness, verticality, thickness -→ watering maintenance -→Wiping the first anti-cracking mortar-→gluing and hanging the steel plate net-→Wiping the second anti-cracking mortar-→watering and maintenance-→acceptance-→A: the construction of exterior wall paint. B: the construction of exterior wall tiles.
4.2 External Wall Insulation Construction Methods:
4.2.1 External Wall Insulation Mortar for Facade Brick (ZMBW Composite Multifunctional High Performance Insulation Mortar) construction process is as follows: 1, 3mm thick interface mortar; 2, 20mm~25mm thick insulation mortar (thickness of the south-east and west side is 20mm, and thickness of the north side is 25mm); 3, 6mm thick anticracking mortar; 4, Steel plate net; 5, 4mm thick anti-cracking mortar; 6, 5mm thick bonding mortar + brick.
4.2.2 Coating exterior wall insulation construction process is as follows: 1, 3mm thick interface mortar; 2, 20mm~25mm thick thermal insulation mortar (thickness of the southeast and west side of 20mm, the thickness of the north side of 25mm); 3, 10mm thick crack-resistant mortar; 4, steel plate mesh; 5, polymer emulsion elastic primer coatings; 6, flexible water-resistant putty + paint.
4.3 Construction points of external wall insulation (ZMBW composite multi-functional high-performance thermal insulation mortar)
4.3.1 Brick wall: clean up the residual mortar, dirt and dust on the wall surface, and pour water to moisten one day before plastering. Water again one hour before plastering to meet the construction requirements.
4.3.2 Concrete wall: use 10% fire alkaline water to remove the surface oil, then rinse with water to dry. Apply interface treatment agent after watering and moistening, can be applied by coating method or brushing method.
4.3.3 Thermal insulation mortar construction should be divided into passes. The thickness of each pass should not exceed 10mm, should be compacted and flattened when coated, to be watered and moistened after the initial setting of the thermal insulation mortar, in order to prepare for the next plastering. Layers of plastering time interval is generally more than 24h, to be the thickness of the punch surface, first with a big bar scraping, and then with an iron spatula force smoothing.
4.3.4 At the same time in the construction of the insulation layer should be in the door and window openings around the exterior wall plaster insulation mortar, in the eaves, window sills, window lintels, canopies, balconies, roof and the top of the protruding parts of the wall should be applied to make the slope of the cement mortar, the following should be done below the drip line.
4.3.5 Insulation layer maintenance, to be the first condensation and then watering wet. Watering time interval can be determined according to the environmental drying conditions, to maintain the surface does not appear white phenomenon, watering maintenance shall not be less than 7d.
4.3.6 Compartmentalized strips with interface treatment agent pasted on the surface of the thermal insulation layer, field installation to form the compartmentalized joints.
4.3.7 impermeable anti-cracking mortar plastering must be carried out after the insulation mortar layer is fully solidified. Generally, it is carried out after 7d or when the surface is not moving by hand pressing. Water and moisten the day before construction. Water again 1h before plastering. Anti-cracking mortar construction, with an iron spatula smoothed and then rubbed with a plastic spatula to pull the hair.
4.3.8 anti-seepage and anti-cracking mortar should be mixed with use, should not be parked for more than 3h, landing ash shall not be used. After the initial condensation should be watering maintenance, maintenance time shall not be less than 7d.
Five, construction management
5.1 external wall insulation (ZMBW composite multifunctional high-performance thermal insulation mortar) project is scheduled for 38 days, the quality of basic engineering to achieve qualified.
5.1.1 Interface mortar construction for 3 days
5.1.2 The first thermal insulation mortar construction for 5 days
5.1.3 The second thermal insulation mortar construction for 5 days
5.1.4 The first crack-resistant mortar construction for 4 days
5.1.5 Sticky hanging steel plate mesh for 2 days
5.1.6A: The second crack-resistant mortar Construction 4 days; B: polymer emulsion elastic primer coating 3 days
5.1.7A: bonding mortar + tiles + hooking material 7 days; B: flexible water-resistant putty + paint 5 days.
5.2 According to the requirements of the schedule and quality commitment determined in this project, in the construction of external wall insulation project, the reasonable allocation of production of all elements to ensure the construction progress, to ensure the construction quality of the basic engineering, and to achieve the contract objectives.
5.3 Construction should be reasonably arranged between the interrelationship between the various types of work, construction sequence, to ensure orderly construction. And reasonably allocate and arrange the labor force to meet the demand of construction progress
5.4 Procure the construction materials in time according to the construction progress, and do the on-site inspection work according to the specification requirements.
5.5 in the construction of exterior wall insulation mortar, strictly according to the ratio of measurement feeding and set up a person in charge of the mixing of insulation mortar, ZMBW thermal insulation mortar mixing time of 6 ~ 8min, water and ash (dry mortar) ratio of 0.55 ~ 0.65, the consistency should be controlled at 60 ~ 80mm.
5.6 Strengthen the supervision and guidance of the construction process, the implementation of the whole process of effective control of the construction of external wall insulation.
5.7 Each type of work in the construction should do a good job of team self-checking work and process inspection work, to ensure the construction quality of each process.
5.8 according to the specification requirements in a timely manner to do a good job in the collection of quality assurance information, records, organization, to ensure that the information is true, complete, standardized and synchronized with the construction progress.
6, safety and civilized construction
6.1 exterior wall insulation project safety and civilized construction target: zero safety accidents with minor injuries, the construction site is clean and civilized.
6.2 before construction, all mechanical equipment should be tested, debugging and qualified and reported for inspection, put can start using. The use of the process of implementation of the system of special responsibility, and set up a special person to carry out routine maintenance and repair work.
6.3 construction of construction personnel to carry out safety education and safety precautions. Construction must strictly abide by the safety regulations, operating procedures to ensure safe construction.
6.4 Construction materials are stacked in an orderly manner according to the requirements, and the site is kept civilized and clean. ① bidding control price total price whether the details of the composition of a complete match ② bidder to prepare the bidding control price of man-materials and machinery unit price whether to use the information price and then the market price ③ construction authorities on the cost or cost standards of the policy provisions of the magnitude, whether or not the upper limit of the magnitude of the implementation of the ④ bidder to prepare the bidding control price of the construction of safe and civilized construction costs, fees and taxes for the competition ⑤ bidding control price of the integrated unit price Whether to include the risk content and its range (range) of risk costs arising from the bidder's request in the bidding documents bidding documents have unlimited risk, all risks borne by the contractor ⑥ When the bidder provides materials with provisional unit price, whether the provisional unit price is included in the consolidated unit price.
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