A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Foam concrete for backfilling gas pipeline in tunnel and preparation method of foam concrete
The invention relates to foam concrete for backfilling a gas pipeline in a tunnel. The foam concrete comprises the following components in parts by weight: 40-55 parts of fly ash, 45-60 parts of ordinary Portland cement, 0.8-1.3 parts of a water reducing agent and 0.7-1.2 parts of a foaming agent. The preparation method comprises the following steps: (1) uniformly dry-mixing the fly ash and the ordinary Portland cement, and adding water according to a water-cement ratio of 0.4-0.6; (2) blending a foaming agent, water and a water reducing agent, and uniformly stirring to prepare foam; (3) adding the prepared foam into the prepared slurry, and uniformly mixing; and (4) pouring, filling and maintaining the obtained foam concrete slurry according to requirements. By accurately controlling the mixing ratio of various raw materials and the volume ratio of slurry to foam, moderate strength and density are ensured, the filling requirement of a gas pipeline in a tunnel is met, meanwhile, it is ensured that the filler does not affect the internal pipeline due to buoyancy, and the work amount and cost required by pipeline maintenance are reduced.
本发明涉及一种用于隧道内输气管道回填的泡沫混凝土，其重量组分为：粉煤灰40～55份，普通硅酸盐水泥45～60份，减水剂0.8～1.3份，发泡剂0.7～1.2份。制备方法与步骤：(1).将粉煤灰和普通硅酸盐水泥干拌均匀，按0.4～0.6的水灰比加水；(2).调配发泡剂、水及减水剂，均匀搅拌，制备泡沫；(3).将制备好的泡沫，加入到制备好的浆体中，均匀混合；(4).将所得的泡沫混凝土浆体按照需求进行浇筑填充和养护。通过精确控制各种原料的配合比以及浆料和泡沫的体积比，保证其强度及密度适中，满足隧道内输气管道填充要求，同时保证填充物不会因浮力而对内部的管道产生影响，降低管道维护所需的工程量及成本。
Foam concrete for backfilling gas pipeline in tunnel and preparation method of foam concrete
The invention relates to foam concrete for backfilling a gas pipeline in a tunnel. The foam concrete comprises the following components in parts by weight: 40-55 parts of fly ash, 45-60 parts of ordinary Portland cement, 0.8-1.3 parts of a water reducing agent and 0.7-1.2 parts of a foaming agent. The preparation method comprises the following steps: (1) uniformly dry-mixing the fly ash and the ordinary Portland cement, and adding water according to a water-cement ratio of 0.4-0.6; (2) blending a foaming agent, water and a water reducing agent, and uniformly stirring to prepare foam; (3) adding the prepared foam into the prepared slurry, and uniformly mixing; and (4) pouring, filling and maintaining the obtained foam concrete slurry according to requirements. By accurately controlling the mixing ratio of various raw materials and the volume ratio of slurry to foam, moderate strength and density are ensured, the filling requirement of a gas pipeline in a tunnel is met, meanwhile, it is ensured that the filler does not affect the internal pipeline due to buoyancy, and the work amount and cost required by pipeline maintenance are reduced.
本发明涉及一种用于隧道内输气管道回填的泡沫混凝土，其重量组分为：粉煤灰40～55份，普通硅酸盐水泥45～60份，减水剂0.8～1.3份，发泡剂0.7～1.2份。制备方法与步骤：(1).将粉煤灰和普通硅酸盐水泥干拌均匀，按0.4～0.6的水灰比加水；(2).调配发泡剂、水及减水剂，均匀搅拌，制备泡沫；(3).将制备好的泡沫，加入到制备好的浆体中，均匀混合；(4).将所得的泡沫混凝土浆体按照需求进行浇筑填充和养护。通过精确控制各种原料的配合比以及浆料和泡沫的体积比，保证其强度及密度适中，满足隧道内输气管道填充要求，同时保证填充物不会因浮力而对内部的管道产生影响，降低管道维护所需的工程量及成本。
Foam concrete for backfilling gas pipeline in tunnel and preparation method of foam concrete
一种用于隧道内输气管道回填的泡沫混凝土及其制备方法
LI CHUNBAO (author) / LI XIAOTIAN (author) / WANG XUKAI (author) / ZHANG JIANHUA (author) / LIU XIAOHUI (author) / SONG HAIFENG (author) / YIN ZHIJIE (author) / XIAO CHANG (author) / CONG ZIQIN (author) / ZHAO DONGMEI (author)
2023-04-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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