The invention discloses a lightweight concrete exterior wall insulation building block and a production method thereof. The lightweight concrete exterior wall insulation building block is prepared by mixing the following
raw material components in proportion by weight: 20-50 of
cement, 20-40 of
fly ash, 8-20 of fine sand, 1-8 of
calcareous material, 5-16 of
plant filler, 0.2-0.5 of
adjuvant, 8-15 of water and 0.3-0.7 of
foaming agent. The production method of the lightweight concrete exterior wall insulation building block comprises the following steps of: forming
raw material slurry by uniformly mixing production raw materials in mixing proportion; adding the water to the
foaming agent, and generating uniform and stable bubbles by using a foaming device; mixing the bubbles with the
raw material slurry so as to prepare bubble concrete
slurry; and
casting the bubble concrete slurry into a mold and curing. According to the lightweight concrete exterior wall insulation building block and the production method of the lightweight concrete exterior wall insulation building block, the
plant filler, such as
sawdust or
crop straw powder, is mixed, so that the weight is reduced, the flexibility is improved, and the improvement on the strength of a finished product and the
cracking prevention are favored; and the bubbles are enabled to be uniformly distributed in the raw material slurry by adding the
foaming agent, so that not only is the weight of the building block reduced, but also the heat preservation and heat insulation effects are improved.