| 摘要 |
PURPOSE:To provide a concrete composition less in the separation of aggregate and the sedimentation and rich in the packing property in spite of a high flowability and excellent in the durability such as freezing resistance of hardened concrete. CONSTITUTION:This concrete composition is characterized by that an alkaline metal salt of sulfoethyl cellulose of 0.02-0.5wt.% for a cement bonding agent is added to the concrete composition consisting of the cement bonding agent, an aggregate, water, a water reducing agent and an AE agent. |
