Super-retarding concrete and preparation method thereof

The invention relates to the field of concrete, in particular to super-retarding concrete and a preparation method thereof. The invention relates to super-retarded concrete, which is prepared from the following raw materials in parts by weight: 90 to 105 parts of water, 180 to 200 parts of Portland cement, 150 to 200 parts of admixture, 1000 to 1200 parts of coarse aggregate, 700 to 800 parts of fine aggregate, 0 to 8 parts of admixture, 15 to 25 parts of wheat straw liquid treatment substance, 8 to 15 parts of wheat straw solid treatment substance and 1 to 6 parts of calcium carbonate whisker, the preparation method of the wheat straw liquid treatment substance and the wheat straw solid treatment substance comprises the following steps: step 01, crushing wheat straws; 02, soaking the wheat straw with a sodium hydroxide solution; and step 03, carrying out solid-liquid separation on the material obtained in the step 02 to obtain a solid part which is a wheat straw solid treatment substance and a liquid part wh