Winter construction

When the daily average temperature is below 5 ° C, winter construction should be carried out and meet the following requirements:
1. Before grouting, measures should be taken to preheat the foundation surface, keep its temperature above 100 ° C, and remove accumulated water.
Before being frozen, the compressive strength of cement-based grouting materials shall not be less than 5MPa.

Wholesale price of equipment foundation grouting material, secondary grouting material for Wenshang steel structure base

The hardness of stone refers to its ability to resist mechanical intrusion from other objects. It is related to the mineral composition, structure, and construction of stone. Hardness: Hardness is measured using a hardness tester. According to the method of applying load during measurement, it can be divided into static hardness and dynamic hardness. Stone is a brittle material and is more suitable for using a dynamic hardness tester to measure its hardness. The Shore hardness of marble is usually between 35 and 55, while the Shore hardness of granite is usually between 7 and 95, and some can be as high as 11 or above. The wear resistance of wear-resistant stone refers to the ability of stone to resist wear and tear, and the property of stone to resist complex effects such as friction, edge shear, and impact under usage conditions.
Construction in high temperature climate environment
If the temperature of the grouting site is greater than 35 ° C, construction should be postponed according to the high temperature climate and meet the following requirements:
Measures should be taken 24 hours before grouting to prevent direct or other thermal radiation from the grouting area.
2. Take appropriate cooling measures, and the temperature of the concrete foundation and equipment base plate in contact with the cement-based grouting material should not exceed 35 ° C.
3. The injection temperature of the slurry should not exceed 30 ° C.
4. Moisturizing and curing measures should be taken promptly after grouting.

Wholesale price of equipment foundation grouting material, secondary grouting material for Wenshang steel structure base

The diamond bead saw full sawing mining process and process requirements are acceptable as long as the mining cost is acceptable. Diamond bead saw full sawing is currently the mechanized mining method for granite. Using a diamond bead saw to separate and cut all three connecting surfaces between the separated body and the ore body; Use a specialized air pressure push bag that can be inserted into the bead rope saw seam to lift the separated body off the ore body, and then with the assistance of an excavator, loader, or slow motion winch, flip the separated body over; Still using a bead saw to disassemble and cut the separated body, and shaping and cutting the six sides of the raw material. To reduce mining costs, under appropriate conditions, manual operation of handheld rock drills for drilling holes, expansion agents (expansion cement), or large-diameter circular saws can also be used to shape the waste materials; With the help of excavators, loaders, boom cranes, or slow motion winches, the finished waste materials are moved to the waste yard on the mining face and loaded onto trucks for transportation.

The maintenance free construction conditions are as follows

When the construction temperature is above 5 ℃ and below 35 ℃, there is no need for maintenance after foundation grouting. If the temperature exceeds the range, the grouting material construction and maintenance methods should be followed for maintenance.

The insulation performance of insulation material rock wool board has always been very good, especially at room temperature, its insulation performance is much better than other insulation boards. In addition, the sound insulation effect of rock wool is also quite good, and it is widely used in Europe and North America. However, during the construction of insulation material rock wool board, the following points should be noted: the facilities and pipelines that need to be insulated should have no leaks, dry surfaces, no grease, and no rust. Under certain conditions, appropriate coatings can be applied to facilitate corrosion prevention. In order to achieve the goal of heat loss, all joints between the board and felt must be tightly connected. During multi-layer insulation, the cross joints should be staggered to avoid the formation of thermal bridges. Cold bridges must be eliminated during insulation.