The invention relates to low-carbon low-shrinkage ultra-
high strength concrete and a preparation method and application thereof. The low-carbon low-shrinkage ultra-
high strength concrete comprises 340-380 parts of
cement, 50-90 parts of
silicon powder, 140-170 parts of
fly ash, 0-35 parts of
waste rubber powder, 980-1100 parts of
crushed stone, 580-680 parts of medium sand, 110-160 parts of
tap water, 10-22 parts of a water
reducing agent, 0-3.5 parts of
fiber and 0-0.875 part of a
coupling agent. According to the method, during preparation, first
drying the medium sand in the sun; measuring various components in proportion, manually kneading the
waste rubber powder, pouring the
waste rubber powder into a stirring
barrel, then uniformly stirring the water
reducing agent, the
coupling agentand water, pouring the water
reducing agent, the
coupling agent and the water into the stirring
barrel, and stirring; pouring the
cement, the
silicon powder and the
fly ash into the stirring
barrel,and stirring; adding the
crushed stone, and stirring; finally, adding the medium sand and the
fiber, stirring and discharging. The low-carbon low-shrinkage ultra-
high strength concrete is configured with lower single
cement consumption, and effectively solves the problems of high-efficiency utilization of waste rubber powder resources, excessively high
viscosity, excessively high self-constrictionand high
brittleness of ultra-high strength concrete mixtures, thus achieving multiple benefits at one
stroke.