The invention relates to a preparation method of concrete with high strength and high damp. The invention is characterized in that the preparation method includes the following steps: firstly, the pretreatment of the light aggregate: (1) the feeding and vibration
reduction treatment of the light aggregate: the light aggregate adsorbs the
polymer to obtain feeding and vibration
reduction treatment light aggregate; (2) sealing and reinforcing treatment on the surface of the feeding and vibration
reduction treatment light aggregate: the feeding and vibration reduction treatment light aggregate obtained at the first step is put into sealing and reinforcing treatment
slurry to mix for 1 to 3 minutes, then being fished out, and then conserved for 3 days in the condition of 85 percent to 95 percent of
relative humidity and the temperature of 23 DEG C to 27 DEG C, wherein, pretreatment light aggregate is obtained; secondly, preparation for the concrete with high strength and high
toughness: the concrete with high strength and high
toughness is formed by evenly mixing water, common coarse aggregate, the pretreatment light aggregate,
cement, fine aggregate, mineral addition, fibre, emulsified
polymer and high efficiency water
reducing agent. The invention can effectively increase the strength and the damp performance of the concrete.