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Self-compacting concrete for elastic supporting block type ballastless track bed
The invention relates to self-compacting concrete for an elastic supporting block type ballastless track, which effectively meets the construction conditions of the elastic supporting block type ballastless track and the particularity of raw materials of a mixing plant, and has the characteristics of large flow regime, self-compaction, no segregation, low shrinkage, high crack resistance and the like. And the method also has the characteristics of high slump loss resistance, high tolerance to the silt content of the raw materials and capability of ensuring that the stones do not sink in long-distance micro-vibration transportation. The concrete comprises the following components in parts by weight: 120 parts of cement; 210 to 250 parts of fine aggregate; 230 to 260 parts of coarse aggregate; 25 to 35 parts of a mineral admixture; 10 to 25 parts of an expanding agent; 4-9 parts of a viscosity modifier; 2-3 parts of a water reducing agent; 0.05 part of a mud blocking agent; 0.05 part of an internal curing agent; 0.05 part of an air entraining agent; 0.05 part of a slow release agent; 0.02 part of a thixotropic agent; 0.002 part of a defoaming agent; and 55-65 parts of water.
一种弹性支承块式无砟轨道用自密实混凝土，以有效满足弹性支承块式无砟轨道的施工条件和搅拌站原材的特殊性，除具大流态、自密实、无离析、低收缩和高抗裂等特点外，还具有高保坍性、对原材料含泥量容忍度高和长距离微振动运输保证石子不出现下沉现象的特点。其按重量份的组分为：水泥120份；细骨料210～250份；粗骨料230～260份；矿物掺合料25～35份；膨胀剂：10‑25份；粘改剂：4～9份；减水剂2～3份；阻泥剂0.05份；内养护剂0.05份；引气剂0.05份；缓释剂0.05份；触变剂0.02份；消泡剂0.002份；水55～65份。
Self-compacting concrete for elastic supporting block type ballastless track bed
The invention relates to self-compacting concrete for an elastic supporting block type ballastless track, which effectively meets the construction conditions of the elastic supporting block type ballastless track and the particularity of raw materials of a mixing plant, and has the characteristics of large flow regime, self-compaction, no segregation, low shrinkage, high crack resistance and the like. And the method also has the characteristics of high slump loss resistance, high tolerance to the silt content of the raw materials and capability of ensuring that the stones do not sink in long-distance micro-vibration transportation. The concrete comprises the following components in parts by weight: 120 parts of cement; 210 to 250 parts of fine aggregate; 230 to 260 parts of coarse aggregate; 25 to 35 parts of a mineral admixture; 10 to 25 parts of an expanding agent; 4-9 parts of a viscosity modifier; 2-3 parts of a water reducing agent; 0.05 part of a mud blocking agent; 0.05 part of an internal curing agent; 0.05 part of an air entraining agent; 0.05 part of a slow release agent; 0.02 part of a thixotropic agent; 0.002 part of a defoaming agent; and 55-65 parts of water.
一种弹性支承块式无砟轨道用自密实混凝土，以有效满足弹性支承块式无砟轨道的施工条件和搅拌站原材的特殊性，除具大流态、自密实、无离析、低收缩和高抗裂等特点外，还具有高保坍性、对原材料含泥量容忍度高和长距离微振动运输保证石子不出现下沉现象的特点。其按重量份的组分为：水泥120份；细骨料210～250份；粗骨料230～260份；矿物掺合料25～35份；膨胀剂：10‑25份；粘改剂：4～9份；减水剂2～3份；阻泥剂0.05份；内养护剂0.05份；引气剂0.05份；缓释剂0.05份；触变剂0.02份；消泡剂0.002份；水55～65份。
Self-compacting concrete for elastic supporting block type ballastless track bed
一种弹性支承块式无砟轨道道床用自密实混凝土
PAN ZILI (author) / WANG JIANSHENG (author) / HE NIANGZHE (author) / ZENG XIAOHUI (author) / LIU JIANGUANG (author) / DONG HUAIZHENG (author) / LI BAOYOU (author) / LI YONGLIANG (author) / HU JIANPING (author) / LI LIANGYU (author)
2022-07-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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