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Talking about emery ground construction technology.

人气: Article Source: Unknown Popularity: 发表时间:2018-12-06 -Published time: 2018-12-06
金刚砂地面施工工艺 它的首要成份为天然的矿石,比较符合环保的理念。 Introduction of Emery Materials Natural ore is more in line with the concept of environmental protection. The direct construction is on the concrete surface in the initial setting stage. After construction, it forms a hard, dense, dust-free, beautiful and highly wear-resistant floor. Emery ground construction technology is applied together with concrete ground, with short construction period; good durability, reducing the cost caused by periodic painting or thickening the appearance; it can produce various colors to achieve beautiful requirements. It has the advantages of not being easy to dust, simple and clean, low cost, simple process, high service life, high wear resistance, high impact resistance, etc. It is a perfect substitute for terrazzo. 2 Features of the project The underground garage project of Jinan Art School has a construction area of 12380m2. This project uses a reinforced concrete structure. The original design uses abrasion-resistant floor paint. After market surveys and engineering functions, the ground was changed to use emery flooring. The thickness of the concrete is 120mm, the design strength is C25, and the Φ6.5 is 200mm away from the crack-resistant steel mesh. The thickness of the cushion concrete is 60mm, and the design strength is C20.   Emery ground construction technology 3 Construction technology 3.1 The screed surface is set out according to the reference ink line of the building structure (such as the wall surface + 50cm line). The level of concrete is set in the floor pouring area with a level gauge, and the level elevation mark is set. The maximum unevenness is within 3-5mm. 3.2 Concrete placement (1) Sprinkle water before the concrete placement to make the foundation wet. (2) Place the concrete as high as possible at one time. Partially reach the elevation and use concrete to make up and vibrate. Mortar repair is strictly prohibited. Flat plate vibrator is used for vibrating, and special steel drums are used for repeated rolling. The columns, corners and other parts are beaten with a wood wiper. 金刚砂地面施工工艺 After the concrete is scraped, the cement slurry floats out to a surface of at least 3mm thick emery ground construction technology . (3) After the concrete is poured, use rubber hoses or vacuum equipment to remove bleeding, and repeat the wear-resistant material construction after repeating more than two times. Before construction of wear-resistant materials, construction personnel should wear flat-bottom rubber shoes during the mid-operation phase, and waterproof paper shoes should be used during the later operation phase. 3.3 Distributing abrasion-resistant materials for the first time and smoothing and smoothing (1) The opportunities for abrasion-resistant materials to be distributed vary with factors such as climate, temperature, and concrete cooperation ratio. Spreading too early will cause the wear-resistant material to sink into the concrete and lose its effect; if it is spread too late, the concrete has solidified and will lose its bonding force, making the wear-resistant material unable to combine with it and causing peeling. The method for judging the spreading time of the wear-resistant material is to step on it, and when it sinks about 5mm, you can start the first spreading construction. Emery ground construction technology (2) Moisture disappears quickly at the sidelines of walls, columns, doors, and formwork, so it is advisable to spread the construction first to prevent the effect from being reduced due to water loss. (3) The first spreading amount is 2/3 of the full amount. The mixture should be dropped evenly, and should not be thrown with force to cause separation. After spreading, use a wooden trowel to smooth it out. After the abrasion-resistant material absorbs a certain amount of water, it is milled with a trowel to disperse and combine it with the underlying concrete slurry. 3.4 The second spreading of wear-resistant materials and smoothing and smoothing (1) For the second spreading, first use a ruler or a straight scraper to measure the level, and adjust the unevenness of the first spreading and the direction of the second spreading. Should be perpendicular to the first time. (2) The second spraying amount is 1/3 of the full amount. After spreading, immediately wipe out, calender, and repeat the calender operation at least twice. Emery ground construction technology calenders should be intertwined vertically and horizontally, uniformly and orderly, to avoid data collection. The corners are treated with a wooden trowel. (3) When the surface layer data is hardened to a slight depression of the finger pressure, the speed and viewpoint of the calender should be adjusted depending on the hardening condition, and the calender should be interlaced more than 3 times vertically and horizontally. (4) The flatness of the wear-resistant floor is required to be 2m square with a maximum error of 3-5mm, and the maximum error between the extreme high point and the extremely low point of the same elevation is not greater than 20mm. Try to avoid cracking, peeling or sanding. 3.5 Exterior Retouching and Maintenance (1) There are still messy smears on the back layer of the calender. In order to eliminate the smears, a thin steel trowel is finally used to orderly and co-directionally calender the surface layer to complete the finishing process. (2) Spray the maintenance agent to maintain the wear-resistant floor for 5-6 hours after the construction. The dosage is 0.2 liters / m2. Or cover with plastic film to avoid cracking. (3) The mold can be dismantled 24 hours after the construction of the wear-resistant floor surface is completed, but care should be taken not to damage the floor margin. (4) Cut slits should be made 5-7d after completion to prevent irregular cracking, and the gap between slits should be 6-8m (generally determined based on the distance between workshop columns). The emery ground construction process should be cut in uniform elastic lines to ensure that the cut seams are neat and straight, the cut depth should be at least 1/5 of the floor thickness, and pre-formed or cut elastic resin and other materials should be used for the filling materials. Apply sealant. 4 Construction quality control measures 4.1 Strengthen operator skills training and pre-post inspection (1) Draw up training plans and training courses based on the status of engineering practice. The textbook content is key to emery wear-resistant floor construction, relevant construction acceptance standards, and construction experience of similar projects. . (2) The project department arranges relevant management personnel and technical backbones to explain the drawing requirements, quality standards, construction characteristics and attention issues of the project, and then senior skilled technicians of various types of work with high skills and experience will train the special operations of the type of work in accordance with the standards. Skills and demonstrate practical methods. Emery ground construction technology   (3) One week before the construction of the wear-resistant floor of this project, the relevant operators involved in the construction are required to participate in relevant training before entering the site, and carry out professional theoretical knowledge and practical operation skills check. Only after passing the check can they participate in the wear-resistant floor of this project. construction. 4.2 Concrete placement and maintenance (1) Based on the engineering practice, a special concrete construction plan shall be prepared before concrete construction. The plan shall clarify the concrete placement sequence. Concrete pouring should be carried out in order and in separate bins, and it should be poured to the design level as soon as possible to avoid emptying of the surface layer and the cushion layer caused by two pourings. (2) The partition diagram is made according to the layout of the garage. The width of the branch warehouse is 6m, and the center line of the structural column is located at the branch warehouse partition.   Emery ground construction technology (3) Support the formwork according to the designed elevation to ensure that the margins of the formwork are aligned and the formwork is not run during paving. When paving the concrete, make sure that the vibration is compact and compact, and no stones are exposed on the surface. Finally, use a roller or a scraper to level the concrete surface, and use a wooden trowel to rub out the edge of the formwork. (4) A special person is arranged to use a spirit level to check the flatness at any time to confirm that the flatness of the concrete surface meets the requirements (general error ± 4mm). (5) The concrete is maintained by special maintenance agent, the dosage is about 0.2 liters / m2. After the ground is leveled, it is sprayed evenly along the ground to form a dense water-blocking protective film, which avoids the water evaporation of the concrete itself and reaches the purpose of maintenance. The effect of maintenance is better than that of general watering and maintenance, ensuring the strength and quality of the concrete.   Emery ground construction technology 4.3 Accurately grasp the point of puncture at the time of emery construction (1) Before the emery is distributed, the concrete surface is dense and flat without bleeding. (2) During the initial setting of the concrete, when the finger pressure test leaves a mark of 3 ~ 5mm, the silicon carbide is evenly distributed in the vertical direction twice. (3) When the corundum hardened material absorbs the moisture of the concrete and becomes wet, use a trowel to compact and collect it. (4) The construction process is monitored by quality inspectors, and the construction process meets the requirements. 4.4 Strictly control the opening time of transverse shrinkage joints. (1) Prepare special skills before opening construction, and provide written and oral explanations to operators. (2) A special person will be responsible for opening the seam 3d after the surface layer construction is finished, and the seam depth is 5cm. (3) Spring the thread before slitting. The two work together when slitting. The speed is moderate and the shrinkage is straight and beautiful after slitting. Emery ground construction technology   (4) The construction process is monitored by quality inspectors, and the construction process meets the requirements. 5 Construction effect After adopting the above-mentioned skills and measures, the appearance after ground formation is smooth, flat, and common in color and luster, the grid seams are straight and clear, and the appearance quality is good. The overall horizontal elevation error on the ground is controlled within ± 3mm, and the external flatness error is controlled within 2mm Within. Compared with concrete with the same strength grade, the abrasion resistance index on the ground is increased by 200%, and the external Mohs hardness is greater than 7, which meets the design and application requirements.
 
浅谈,金刚砂,地面,施工,工艺,。 Keywords in this article: Talk, Emery, Ground, Construction, Craftsmanship. , Emery, information,