| 摘要 |
PROBLEM TO BE SOLVED: To manufacture a concrete excellent in material separation resistance, small in reduction of flowability after standing for a prescribed time and small in secular change of pump pressing and sending during application.SOLUTION: There is provided a concrete composition containing non-ionic water soluble cellulose ether, water, cement, a fine aggregate and a coarse aggregate with a solution viscosity of 2 mass% of the non-ionic water soluble cellulose ether at 20°C of 3 to 1,000 mPa s and a slump ratio (A/B) of 0.50 or more. |
