| abstract |
The present application relates to the field of building materials, and specifically discloses a low-bleeding concrete for underwater use and a preparation method thereof. The low-bleeding concrete for underwater use comprises the following components in parts by weight: 370-420 parts of cement, 650-700 parts of sand, 1060-1100 parts of stones, 40-55 parts of fly ash, 140-190 parts of water, 60-80 parts of water parts of mineral powder, 5-10 parts of flocculant, 10-15 parts of water reducing agent, and 18-30 parts of anti-dispersing agent; the anti-dispersing agent includes early strength agent, tackifier in mass ratio of 1:2-3:1-2 agent and silica fume; the tackifier includes the following components: betaine, cetyltrimethylammonium bromide and 4-tributylmethylammonium bromide; the early strength agent includes the following components: potassium bromide, 2 , 2'-sodium dithiodibenzoate, sodium cinnamate. The low-bleeding concrete for underwater use of the present application has the advantages of low bleeding rate, high underwater cohesion, not easy to disperse, and effectively preventing the growth of algae. |