Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Radiation-shielding concrete adopting lead-zinc tailings as raw material and preparation method therefor
The invention belongs to the field of environment and building materials and particularly relates to radiation-shielding concrete adopting lead-zinc tailings as a raw material and a preparation method therefor. The radiation-shielding concrete contains the following raw materials in parts by weight: 145-180 parts of water, 350-630 parts of cementing material, 700-800 parts of fine aggregates, 1,000-1,500 parts of coarse aggregates, 2.2-7.8 parts of water reducing agent and 35-75 parts of steel fibers, wherein the cementing material consists of cement and a mineral admixture; the coarse aggregates consist of the lead-zinc tailings and barite; the fine aggregates are lead-zinc tailing powder obtained after the lead-zinc tailings are subjected to ball-milling; and the water reducing agent is a polycarboxylic acid efficient water reducing agent. The obtained radiation-shielding concrete is low in cost, can excellently shield alpha, beta and gamma rays and neutron rays and has excellent crack resistance and endurance performance, and meanwhile, the pollution to ecological environment caused by the tailings is reduced, so that the radiation-shielding concrete has good economic and environmental benefits and is good in application prospect.
Radiation-shielding concrete adopting lead-zinc tailings as raw material and preparation method therefor
The invention belongs to the field of environment and building materials and particularly relates to radiation-shielding concrete adopting lead-zinc tailings as a raw material and a preparation method therefor. The radiation-shielding concrete contains the following raw materials in parts by weight: 145-180 parts of water, 350-630 parts of cementing material, 700-800 parts of fine aggregates, 1,000-1,500 parts of coarse aggregates, 2.2-7.8 parts of water reducing agent and 35-75 parts of steel fibers, wherein the cementing material consists of cement and a mineral admixture; the coarse aggregates consist of the lead-zinc tailings and barite; the fine aggregates are lead-zinc tailing powder obtained after the lead-zinc tailings are subjected to ball-milling; and the water reducing agent is a polycarboxylic acid efficient water reducing agent. The obtained radiation-shielding concrete is low in cost, can excellently shield alpha, beta and gamma rays and neutron rays and has excellent crack resistance and endurance performance, and meanwhile, the pollution to ecological environment caused by the tailings is reduced, so that the radiation-shielding concrete has good economic and environmental benefits and is good in application prospect.
Radiation-shielding concrete adopting lead-zinc tailings as raw material and preparation method therefor
YU YAN (Autor:in) / LI CHONG (Autor:in) / QIU CHANGRUI (Autor:in) / HE YAJUN (Autor:in)
21.10.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
Road base material adopting pyrite tailings and preparation method of road base material
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2022