| 摘要 |
PROBLEM TO BE SOLVED: To eliminate water absorption into a concrete product through its surface without requiring much labor or time and thereby to prevent any defectiveness such as warpage resulting from deformation due to water absorption, from being caused. SOLUTION: This production process comprises mixing a waterproof admixture into concrete C to be placed inside a form, beforehand, placing the concrete C containing the waterproof admixture in the form, subjecting the placed concrete C to hardening and curing, and thereafter, releasing the form from the hardened and cured concrete C to produce a concrete product 1, wherein capillary cavities formed in the concrete C are filled with the mixed waterproof admixture, to prevent water absorption into the concrete C through its surface from being caused and to eliminate any deformation due to such water absorption. |
