After plugging the seams with epoxy resin, repair the o […]
After plugging the seams with epoxy resin, repair the outside with bai original cement.
1. Moisture-hardened cement will reduce or even lose its original strength. Therefore, the specification stipulates that cement that has been out of the dao factory for more than 3 months should be reviewed and tested and used according to the test results. Cement that has become damp or hardened must be sieved and used.
The sieved agglomerates are generally used as masonry mortar or plastering mortar for secondary projects after being rubbed or ground. For cement agglomerates that are powdered with one touch or one kneading, the strength level can be appropriately reduced for use.
2. If concrete or plaster is exposed to the sun after operation, its strength will be reduced or even lost completely as the moisture evaporates quickly. Therefore, the base must be strictly cleaned and fully moistened before construction; after construction, it should be covered strictly and watered and maintained in accordance with the regulations. The solidified mortar layer or concrete component will lose strength if it is often exposed to high temperature and extreme heat. This is due to the decomposition of calcium hydroxide in the cement stone under high temperature conditions; in addition, some aggregates are also exposed to high temperature conditions. Will decompose or expand in volume.