Year1
- 包装：
- 牛皮纸袋包装
- 用量：
- 60-80kg/平方米
- 规格：
- 50kg/袋
Use of high-strength wear-resistant material products: in concrete structures with wear-resistant requirements such as mine troughs, slag ditches, hoppers and other industrial construction fields such as the power industry, metallurgical industry, and coal chemical industry. wear-resistant layer. Product introduction: Wear-resistant materials can be divided into: concrete wear-resistant materials, high-strength wear-resistant materials, special mortar wear-resistant materials, floor wear-resistant materials, etc. Wear-resistant material is a new type of inorganic composite building material. It has the characteristics of simple and fast construction, impact resistance, erosion resistance, high temperature resistance, thermal shock resistance, good integrity, easy repair, low price, and convenient transportation. Before the construction of the anti-wear layer, the original concrete base of the silo and coal unloading chute has been constructed for more than a day and reached the final hardening strength. In order to ensure that the anti-wear layer and the original concrete base are firmly bonded and form an organic whole, the following measures are taken Three necessary process preparations: base treatment, laying steel mesh, and applying interface agent.
, Base layer treatment
Three main points should be paid attention to when treating the interface base layer: (1) Roughness. The rougher the base layer, the larger the interface bonding area, the greater the resultant force, and the stronger the ability to resist shear damage, so it is necessary to The base layer is chiseled. ⑵The degree of integrity refers to the degree of damage to the bonding surface. The lighter the damage, the fewer internal defects, and the better the bonding performance. Therefore, any loose parts on the basic surface should be removed. ⑶Cleanliness, reducing impurities, and conducive to improving bonding strength. Therefore, use pressure water to flush and clean the foundation surface, and there should be no debris such as floating slurry, floating ash, and release agents.
, laying steel mesh
In order to ensure the integrity of the wear-resistant layer and the concrete base, reduce the shrinkage of the wear-resistant layer caused by large-area plastering, increase restraint, and prevent hollowing and cracks, on the surface of the base layer Reinforcement mesh needs to be buried. The concrete base is drilled deep, and the diameter of the hole is anchored with steel bar anchoring material Ф steel bar rods. The buried depth of the steel bar rods is exposed ~ 3 (/3 of the designed anti-wear layer thickness). The spacing between steel bar rods is 3 Ф wire rods at the top of the steel bar rods. Welded into a mesh.
Apply interface agent
3. Fully wet the foundation surface one hour before construction, and absorb floating water during construction.
3. Mix the special interface treatment agent with grade ordinary Portland cement and fine sand in a proportion of::, stir evenly and set aside. Apply the mixed interface agent slurry evenly on the surface of the treated concrete foundation without missing the brush.
Anti-abrasive mixing
High-strength anti-abrasive materials can be mixed mechanically or manually. It is recommended to use strong* * Mechanical mixing by the mixer can improve construction efficiency, ensure sufficient and even mixing, and achieve better construction results. The amount of water added on site is 3.~ Add water and stir. The consistency should be suitable for construction. The mixing position should be as close as possible to the construction location to facilitate the continuous progress of construction. The time from adding water and stirring to the completion of construction should be controlled within minutes, so the amount of mixing each time should be ensured to match the construction speed.
, Plastering
When the surface of the interface agent to be applied is dry to the touch, use a spatula to apply the anti-abrasive material on the concrete surface, and press firmly when applying the first layer of plaster. The thickness of each plastering should not exceed. When the wear-resistant layer is designed to be thicker, after the first layer of plastering reaches the initial setting state, the next layer of plastering should be constructed until the designed anti-wear layer thickness is reached.
, Calendering
According to the climatic conditions, calendering treatment will be carried out after ~ hours when the anti-abrasive material is close to initial setting. The calendering process is very important, as it can reduce the roughness of the surface of the anti-wear layer, which is conducive to smooth material discharging and no material clogging. If the construction thickness is large, plastic cracks are prone to occur, so the second calendering treatment must be carried out within 1 hour after the first calendering. , after the high-strength anti-abrasion material has initially set, cover it with a wet straw bag or rock wool quilt and water it for curing. For winter construction, immediately after the construction is completed, it should be covered with plastic film, covered with straw bags or rock wool quilts, and heat preservation measures should be taken. The curing period is days, and the curing measures should also comply with the "Code for Construction and Acceptance of Reinforced Concrete Projects"
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