| 摘要 |
PROBLEM TO BE SOLVED: To provide a water-reducing agent which is used for soil, can reduce water, when the water is added to occurring soil or hydraulic substance-added occurring soil to impart flowability to the soil, and further has biodegradability. SOLUTION: This water-reducing agent for soil, characterized by containing a polymer which has carboxy group-based substituents and biodegradability, for example, at least one polymer selected from (1) alginic acid-based compounds, (2) acetal-based polymers having carboxy group-based substituents, and (3) polyamides having carboxy group-based substituents. |
