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.

What is the general model of prestressed duct grouting material? Yizheng polymer repair mortar

Selection of evaluation method and grade: Based on the allowable deviation of specifications and dimensions, tolerance of flatness and angle, as well as appearance quality, surface smoothness and other indicators, marble slabs are divided into three grades: excellent, first-class and qualified; The grading and identification of marble slabs are mainly determined through the testing of instruments and measuring tools. Check the appearance quality: The appearance of marble slabs of different grades varies. Because marble is naturally formed, defects are inevitable. The quality of both processing equipment and measuring tools is also a cause of defects in the sheet metal. Some boards have incomplete body (warping or indentation), defects (cracks, sand holes, color spots, etc.), and inconsistent board specifications (such as missing edges and corners, uneven board).
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.

What is the general model of prestressed duct grouting material? Yizheng polymer repair mortar

Because the scratches are too deep and need to be repaired with resin, polishing treatment should be carried out after the resin solidifies. Therefore, attention should be paid to abnormal operation and timely maintenance during use. Do not place high-temperature objects directly or for a long time on the countertop, or remove hot pots, kettles, and other high-temperature utensils directly from the stove, oven, microwave, which may cause damage to the surface of quartz stone. A thermal insulation pad should be placed on the countertop. Do not hit the countertop, cut, chop or chop things directly on the countertop. Although the quartz countertop is solid and durable, this will leave unsightly scratches. After use, it should be promptly cleaned with clean water to avoid leaving stains. Regular waxing, stone or cabinet stores can buy stone specific wax, and car wax or floor wax can also be used.

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.

In addition, it is crystal clear like jade, shining brightly like a lamp, and semi transparent is called light freezing; The color is like a delicate orchid, bright and pure, and those with subtle spiritual insight are called orchid green. Due to its fine veins, rare quantity, elegant color, warm texture, and "moderate" nature, Fengmen Qing is the most suitable stone for carving knives among all seal stones, and is widely favored by seal carvers. Fengmen Qing symbolizes seclusion and detachment, especially favored by literati and scholars, and is known as the "gentleman among stones". Chang Fossil is named after its origin in Changhua, Lin'an, Zhejiang. Changshuoshi stone is relatively sandy and generally slightly harder than Shoushan stone and Qingtian stone. However, the chicken blood stone in Changshuoshi is commonly known as chicken blood stone due to its bright red color like chicken blood. It is the essence of stone, with bright red, beautiful, crystal clear characteristics. It has always been valued by people like agate, emerald and diamond, and is known as the national treasure of China.