| 摘要 |
PROBLEM TO BE SOLVED: To provide long-life paving concrete excellent not only in the development of long-term strength but also in the development of initial strength, and capable of bringing about a traffic opening early from the start of paving work.SOLUTION: The paving concrete is obtained by hardening a concrete composition which contains at least a binding material containing Portland cement with a 2CaO/SiOcontent of 30-40 mass% and pozzolanic fine powder with a BET specific surface area of 5-15 m/g. In the paving concrete, bending strength at age of one day is 3.5 N/mmor higher. |
