Concrete admixture, concrete mixture containing admixture and preparation method of concrete mixture

The invention relates to the field of concrete, and particularly discloses a concrete admixture, a concrete mixture containing the admixture and a preparation method of the concrete mixture. The concrete admixture comprises the following components: an accelerator; agar powder; carrageenan; konjaku flour; gelatin; and water. The preparation method of the concrete admixture comprises the following steps: step 1, mixing water, agar powder, carrageenan, konjaku flour and gelatin, and heating until the materials are completely dissolved to form a wrapping solution; step 2, uniformly dispersing an accelerator into the wrapping solution; and step 3, cooling to a gel state, and granulating. The concrete mixture containing the admixture comprises the following components: cement; water; sand; a stone; coal ash; the invention discloses a concrete admixture. The preparation method of the concrete mixture comprises the following step: uniformly stirring and mixing all the components to obtain the concrete mixture contai