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.

Quotation for early strength grouting material Weihai high-strength non shrinkage grouting material

Measure the angle between adjacent faces of the raw material using a 9 steel angle ruler with an inner corner length of 45cm × 4cm. Take a relatively flat surface of the raw material as the reference surface, place one side of the angle gauge against the reference surface, and use a steel tape measure to measure the angle gap between the other side of the angle gauge and the measured surface. When the measured angle is greater than 9, the measuring point is at the root of the angle ruler; When the detected angle is less than 9C, the measuring point is located 4cm away from the root. Use the measured values from each angle to represent the angular limit tolerance of the raw material. Accurate reading up to 1cm. 5.4 Appearance quality. 5.4.1 Visual inspection of color tone patterns, weathering, and hard minerals. 5.4.2 Missing corners and edges, measure the length, width, and depth of the missing corners and edges with a steel tape measure, as shown in Figure 2.
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.

Quotation for early strength grouting material Weihai high-strength non shrinkage grouting material

Standard regulations: Class A stones with relatively low specific activity are not limited in their usage range; B-class stone with relatively high radioactivity is suitable for interior and exterior decoration of all buildings, except for those that are not easily used for indoor decoration; Class C stone with high specific radioactivity can only be used as exterior decoration materials for buildings, seawalls, bridge piers and monuments, gardens, etc. It cannot be generalized that Class C stone is a type of stone that exceeds the standard. Granite also has a role. It cannot be assumed that only marble has a role in radioactivity, and granite does not. Because when X-rays pass through matter, they undergo attenuation due to various forms of effects such as photoelectric effect, Compton effect, and electron pair effect. The magnitude of the attenuation coefficient is related to factors such as the energy of the X-rays and the density of the absorbing medium (stone). Similarly, X-rays passing through granite also undergo attenuation.

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.

Granite is a very hard igneous rock with high density, scratch resistance, and corrosion resistance. It is very suitable for use on floors and kitchen countertops. There are hundreds of varieties of granite. Marble is a derivative of limestone, and it is a metamorphic rock that can be polished and polished. Marble is soft and easily scratched or corroded by sexual substances. There are countless types of marble around the world. Limestone is a type of sedimentary rock composed of calcite and sediment, forming various colors. Sandstone is also a type of sedimentary stone, mainly composed of loose quartz sand particles with a rough texture. There are also many varieties of sandstone to choose from. Cave stone is a partially metamorphic limestone that, due to its structure, can be filled, polished, and has a high density, making it one of the types of marble.