Power trowel VS manual polishing—Which saves more cost?

    We all know that the finished effect of epoxy flooring is seamless. Therefore, when constructing epoxy flooring, it is necessary to deal with some expansion joints on the concrete floor. No matter how good the quality of the materials used to construct the epoxy floor coating is, after one year, it will experience thermal expansion and contraction. If the original concrete floor cracks, the epoxy floor layer attached to the upper layer will also crack. Therefore, it is even more necessary to handle the expansion joints properly. To avoid project quality disputes. Because we often decorate large areas of workshop floors, our company has accumulated a lot of construction experience, so we also have some methods on how to deal with expansion joints. Today we list these construction plans for your reference. 1.  Fill the expansion joints with epoxy resin mortar material, and then carry out construction according to the original plan we designed for the customer. However, this method cannot guarantee that the floor coating at or near the expansion joint will not crack and peel. Because the epoxy mortar material is inelastic and cannot resist the stress when concrete shrinks and cracks, cracking on the ground cannot be avoided in the end. 2. After the epoxy floor is completed, use a cutting machine to cut a 2-5mm wide expansion joint at the original expansion joint position, then clean up the debris in the joint, and then use an elastic material (such as polyurethane elastic glue) to seal the expansion joint. The seams are filled. During this process, care should be taken to avoid contamination of the outside of the seams with glue. Finally apply the epoxy midcoat and topcoat. The filling of elastic glue needs to be to a certain depth, otherwise the elastic glue may not be firmly attached to the concrete and may detach. Compared with the first method, the second treatment method is that because the elastic glue disperses the stress caused by the shrinkage of the concrete, the possibility of cracking of the coating on the expansion joints is greatly reduced. The overall color of the ground is consistent, but due to the coating on the elastic glue It is still rigid. When the concrete shrinks more severely, the floor coating (middle coat and topcoat) on the elastic glue may crack, but the cracks will not be large. 3. When constructing the floor, try to keep the expansion joints first, cover them immediately, and record the location. Then after the floor painting is completed, cut the expansion joints neatly and make sure the width is above 5mm. It is best to modify them. Make it into a trapezoid shape with a wide top and narrow bottom, then clean the dust and debris in the seam, stick tape on both sides of the seam, use polyurethane elastic glue to fill the gap until it is straight, and remove the tape when the elastic glue is half dry. The third method is often used in electronics factories and pharmaceutical factories that have high requirements for cleanliness and aesthetics. It can basically avoid the cracking of the floor coating at the expansion joints and make the floor more beautiful. Disadvantages of this method: Because the polyurethane elastic material has relatively few colors, it is difficult to achieve the same color as the overall floor coating. 4. Local expansion joints on the ground are often paved with fiberglass cloth to enhance crack resistance. The construction method is: first fill the expansion joints flat with epoxy clay pot slurry material, then apply primer material, and then paste it. Apply 1-2 layers of glass fiber cloth with a width of about 10mm, and then roll-coat the middle coating material, top coating, etc.   This method can not only ensure that the overall color of the ground is consistent, but also resist cracking caused by concrete shrinkage. However, if the design thickness of the floor coating is too thin, it is difficult to operate, and the ground where the application is applied is prone to be higher than other places. Therefore, at least epoxy floors above 2MM will adopt this solution.   Note: The parameters provided in this document are for reference only and are not mandatory. Due to differences in technical characteristics between different brands and models of laser levelers, please consult the manufacturer for a suitable solution before actual operation. This reference document assumes no responsibility for any issues arising from failure to follow the manufacturer's instructions.    

Detailed explanation of concrete laser leveling machine pouring leveling construction and leveling control matters 1. Preparation 1.1 After the base layer is processed, the equipment of the laser paver is debugged, and the fixed reference level point is drawn according to the original level point; the non-woven fabric is laid, the side formwork is supported, the laser transmitter is erected, and the ground level is introduced according to the original level point. Laser leveling machine. 1.2 Conveying concrete Commercial concrete is used, and the commercial concrete is transported to the entrance and exit of the garage by tank truck, and then transported to the construction site by a three-wheel dump truck. 1.3 Standard calibration Use a hand-held laser receiver to check the elevation of the floor, introduce the elevation into the laser paver, and adjust the reference point (±0.00) on the leveling machine. 2. Concrete paving Pouring steps: (1) After the formwork is supported, the warehouse should be cleaned one day in advance before pouring concrete, rinsed and soaked with water. When pouring is approaching, drain the open water and sweep the cement slurry or interface agent. At this time, no obvious water accumulation is strictly prohibited. If there is, it must be resolutely removed before paving concrete. (2) After the concrete is put down, it should be preliminarily leveled, and the leveling height should be 3 cm thicker than the elevation. Then level it with a laser paver. The corners that cannot be leveled can be leveled with a gasoline leveler or manually. (3) When the warehouse near the wall is being poured, after the leveling machine walks over, it must be scraped with a scraper in time. and so on. (4) For areas where concrete mixer trucks cannot be driven to the site, tractors should be used to transfer concrete. After the pouring is completed, the floor finishing construction begins when the concrete is initially set. (5) When the warehouse near the wall is being poured, it must be leveled with a scraper in time after the leveling machine has passed by. and so on. (6) For areas where concrete mixer trucks cannot be driven to the site, tractors should be used to transfer concrete. After the pouring is completed, the floor finishing construction begins when the concrete is initially set. 3. During construction, the laser signal received by the receiver of the laser paver (frequency of 10 times per second) automatically adjusts the elevation in real time to ensure that the construction elevation is always at the set standard. Because the laser transmitter is fixed after being set up, it can ensure that the construction of a large area of ground does not produce cumulative errors. 4. During the construction, the operator uses a hand-held laser receiver to detect the ground after the machine is constructed, and again ensures that the flatness error is within the controllable range. If there is anything you don't understand, you can consult us, and we will continue to answer for you.

  The laser leveling machine has attracted the attention of consumers since its launch, which has a lot to do with its own role. The engine oil has the unique role of lubrication and wear reduction, cooling, sealing and leak prevention, shock absorption and buffering on the equipment. It is precisely because of these humanized roles that the equipment has been welcomed by consumers. During use, the engine oil can effectively reduce the wear of the equipment. The following laser leveling machine manufacturer will take you to learn about the six major roles of engine oil on the laser leveling machine in detail. ★ Lubrication and wear reduction: In recent years, in order to pursue a smoother and more perfect ground, more and more people use laser leveling machines for construction. The use of equipment construction can ensure that the entire ground is dense and uniform, which has been well received by the construction industry. The laser leveling machine needs necessary maintenance after using it for a period of time. During maintenance, engine oil has a very large effect on the laser leveling machine. There is very fast relative sliding between the piston and the cylinder, and between the spindle and the bearing. Therefore, to prevent the parts from wearing too quickly, an oil film must be established between the two sliding surfaces. As long as there is a sufficient thickness of the oil film, the surfaces of the relatively sliding parts will be separated, so as to achieve the purpose of reducing wear. ★ Cooling and cooling: The engine oil can bring heat back to the oil tank and then dissipate it into the air to help the water tank cool the engine. Cleaning and cleaning: Good engine oil can bring carbides, sludge, wear metal particles, etc. on engine parts back to the oil tank through circulation, and wash the dirt generated on the working surface of the parts through the flow of lubricating oil. ★ Sealing and leakproof: The engine oil can form a sealing ring between the piston ring and the piston to reduce gas leakage and prevent external pollutants from entering the engine. Rust and corrosion prevention: Lubricating oil can be adsorbed on the surface of the parts to prevent water, air, acidic substances and harmful gases from contacting the parts. ★ Shock absorption and buffering: When the pressure at the cylinder port of the laser leveling machine engine rises sharply, the load suddenly added to the piston, piston chips, connecting rod and crankshaft bearings will be very large. This load will be transmitted and lubricated by the bearings and will buffer the impact load. The relevant knowledge points shared by the laser leveling machine manufacturer for you are basically explained here. If you have good suggestions or opinions, you can contact us in time. We will have professional technicians to help you solve the problem. Thank you for your continued attention and support.