| 摘要 |
<p>To provide a liquid accelerator which excels in its accelerating effect, thick-coating capability, strength development characteristics and the workability of concrete spray nozzle even for concrete with a relatively low cement content per unit volume, and which also excels in storage stability at low temperatures and high temperatures for a long period of time. A liquid accelerator composed of a fluoride-containing aqueous aluminum complex which is obtained through the reaction of aluminum sulfate and hydrofluoric acid, aluminum hydroxide, and phosphorous acid and/or organic acid salts thereof.</p> |
