Requirements for the setting of the standard maintenance room of concrete test blocks.

How many test blocks will be generated in the area of high-rise residential buildings? According to your example, a floor area of 1,000 square meters, 30 floors of more than 30,000 square meters, according to my experience of commercial housing 1000 square meters about 250 cubic meters, (assuming that they are all the same conditions, the same manufacturer, the same batch, the same strength, etc.) take 3 samples, no time to leave a group (3 blocks) standard maintenance, two groups of the same conditions (according to their own needs), so that one layer needs 27 pieces, 30 layers need 810 pieces; The minimum standard of the secondary structure is a group of standard maintenance, a group of the same conditions, a total of 180 pieces. There are also some like the foundation must be more.

This is more than 1,000 yuan. 2

How long is the flow cycle according to the inspection requirements? The test block needs to be done from the construction of the pile foundation to the end of the secondary structure, and it will take 12-14 months like your example. If a test block is standardized, the flow cycle should be 28 days, and under the same conditions, it is 50 days and the longest is not more than 60 days.

3. How big will the test block be hoarded? According to a 28-day cycle, you can pour concrete up to 5 times, so it is about 135 pieces, and the standard maintenance is actually 45 pieces. 4

Therefore, how big should the standard room be set up, and the requirements of the equipment and facilities need to be specific? This inquiry can be made by the manufacturer who provides concrete. The amount is small, and there is a 10 square square that is not much longer.

Specifically, some iron shelves put test blocks, plastic test block molds, sprinkler facilities, air conditioners, constant temperature and humidity automatic control instruments, and so on.

Under standard conditions, the compressive strength value of the cube with an age of 28 days is a representative value, and this value is qualified by the standard (GB50107-2010), which is to reach the strength standard value, that is, to reach the corresponding strength design value.

The strength of standard concrete test blocks should be measured by the method of GB50107-2010 concrete strength evaluation standard, rather than by percentage.

The size of the concrete test block water cultivation standard maintenance room should meet the actual needs, and there is no hard and fast rule.

Basic rules to follow:

1. The concrete test block water maintenance standard room can only be used after the on-site supervision and quality supervision personnel check and confirm that it meets the relevant standards and specifications. Before the use of the standard maintenance room, it must be filed with the construction project quality supervision and testing center.

2. Establish a sound management system for the standard room and strictly implement it. Temperature and humidity control must be done well, and temperature and humidity records must be carried out at least twice a day. Supervisors should randomly check the temperature and humidity records and actual control, and the quality supervision personnel will inspect the water maintenance room of the concrete test block from time to time.

3. The standard specimens can be sent to the testing center one day or the same day before the expiration of the standard age.

4. The test fee of the standard maintenance specimen on site shall be charged at 50% of the test fee of the standard maintenance indoor standard maintenance.

5. The specimens sent to the standard curing room of the construction project quality supervision and testing center for maintenance shall be delivered within 2 days after the mold is removed, otherwise, the non-standard curing specimens shall be received.

The ambient temperature is 20 degrees Celsius plus or minus 2 degrees, and the humidity is not less than 90%;

The temperature of the standard curing chamber of concrete is controlled at (20 2), and the relative humidity is above 95; The concrete test blocks are neatly placed on the shelves of the curing room, and the distance between the test blocks is (10 20) mm, so as to keep the surface of the test blocks moist and avoid directly rinsing the test blocks with water;

The concrete standard maintenance room checks the temperature and humidity once a day in the morning and afternoon, and takes measures to adjust and record the deviation in time;

After the test block enters the standard maintenance room, the test piece should be stacked according to the principle of number and date continuity and order. The temperature of the standard room should be controlled at 20 2, the relative humidity is more than 95%, and the size of the standard room area shall meet the needs of the project construction;

The standard room should be installed with temperature control and humidity control devices to ensure that the temperature and humidity are within the specified range, and the test blocks should be placed on the specimen rack, with a distance of 1 2 from each other. The humidification device must ensure that the sprayed water is atomized, and the cold water cannot be poured directly on the specimen;

The standard maintenance room equipment is dedicated to the standard maintenance and constant temperature and humidity test of concrete specimens and cement specimens, and has a wide range of uses and great promotion value in highway transportation, railways, bridges, civic buildings, water conservancy, hydropower, and scientific research units. Keep the indoor and outdoor hygiene clean and tidy. The test blocks cannot be stacked on top of each other, and it is best to put them on the shelf;

The test block must be registered in and out of the curing room;

Ambient temperature and humidity should be recorded daily.

Do you have a lab on site? You send the test block directly to the lab.

Temperature, humidity.

Wouldn't it be enough to use a standard cage? If you need a standard maintenance room, you have to consider how much to store the specimen to determine the size of the area, and then add an automatic temperature and humidification device, which seems to have a set of equipment for sale.

Determine the area according to the amount of test blocks, build a relatively closed house, and then configure constant temperature and humidity equipment, process the test blocks and place them on the shelves, and declare them for acceptance.

Generally, there are 2 rooms, which are divided into 2 rooms inside and outside, and the outer room is the operation room, where tools are placed. An iron frame is placed in the middle of the room for placing test blocks. It is also equipped with a humidifier, an air conditioner, and a hygrometer. Or just make a pool and place the test block.

Determine the location and area of the standard maintenance room according to their own needs, and then select qualified standard equipment integrators to design. Finally, it was put into use after the construction acceptance.

The construction of concrete specimen standard maintenance room should meet the following four conditions:

1. The ambient temperature is 20 degrees plus or minus 2 degrees, and the humidity is not less than 90%;

Second, the test blocks can not be stacked and stacked, and it is best to put them on the shelves;

3. The test block must be registered in and out of the curing room;

Fourth, the ambient temperature and humidity should be recorded every day.