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A platform for research: civil engineering, architecture and urbanism
Low-shrinkage high-toughness concrete and production process thereof
The invention relates to the technical field of concrete production, in particular to low-shrinkage high-toughness concrete and a production process thereof. The low-shrinkage high-toughness concrete is prepared from the following raw materials in parts by weight: 240 to 300 parts of Portland cement, 430 to 480 parts of medium sand, 680 to 760 parts of gravel, 70 to 85 parts of mineral powder, 80 to 100 parts of fly ash, 32 to 48 parts of polyvinyl alcohol, 8 to 11 parts of water reducing agent, 15 to 30 parts of fiber reinforcement, 45 to 60 parts of compound filler, 8 to 12 parts of citric acid and 160 to 180 parts of water, wherein the compound filler is formed by compounding hollow glass beads, kaolin and nano silicon dioxide according to the mass ratio of (0.3-0.6): 1: (0.5-0.8); the concrete produced by the invention not only has better toughness and mechanical properties, but also has the advantage of low shrinkage rate; in addition, due to synergistic use of the medium sand, the gravel and other materials, the mechanical strength of the concrete can be guaranteed, and the advantage of low shrinkage performance of the concrete is further guaranteed.
本发明涉及混凝土生产技术领域，具体为一种低收缩率高韧性混凝土及其生产工艺；所述低收缩率高韧性混凝土由如下重量份原料组成：240～300份硅酸盐水泥、430～480份中砂、680～760份碎石、70～85份矿粉、80～100份粉煤灰、32～48份聚乙烯醇、8～11份减水剂、15～30份纤维增强体、45～60份复配填料、8～12份柠檬酸及160～180份水；其中，所述复配填料由空心玻璃微珠、高岭土及纳米二氧化硅按0.3～0.6：1：0.5～0.8的质量比复配而成；本发明所生产的混凝土不仅具有较好的韧性及力学性能，还具有收缩率低的优点；另外，中砂、碎石等物料的协同使用，能保证混凝土的机械强度，进一步保证了混凝土低收缩性能的优点。
Low-shrinkage high-toughness concrete and production process thereof
The invention relates to the technical field of concrete production, in particular to low-shrinkage high-toughness concrete and a production process thereof. The low-shrinkage high-toughness concrete is prepared from the following raw materials in parts by weight: 240 to 300 parts of Portland cement, 430 to 480 parts of medium sand, 680 to 760 parts of gravel, 70 to 85 parts of mineral powder, 80 to 100 parts of fly ash, 32 to 48 parts of polyvinyl alcohol, 8 to 11 parts of water reducing agent, 15 to 30 parts of fiber reinforcement, 45 to 60 parts of compound filler, 8 to 12 parts of citric acid and 160 to 180 parts of water, wherein the compound filler is formed by compounding hollow glass beads, kaolin and nano silicon dioxide according to the mass ratio of (0.3-0.6): 1: (0.5-0.8); the concrete produced by the invention not only has better toughness and mechanical properties, but also has the advantage of low shrinkage rate; in addition, due to synergistic use of the medium sand, the gravel and other materials, the mechanical strength of the concrete can be guaranteed, and the advantage of low shrinkage performance of the concrete is further guaranteed.
本发明涉及混凝土生产技术领域，具体为一种低收缩率高韧性混凝土及其生产工艺；所述低收缩率高韧性混凝土由如下重量份原料组成：240～300份硅酸盐水泥、430～480份中砂、680～760份碎石、70～85份矿粉、80～100份粉煤灰、32～48份聚乙烯醇、8～11份减水剂、15～30份纤维增强体、45～60份复配填料、8～12份柠檬酸及160～180份水；其中，所述复配填料由空心玻璃微珠、高岭土及纳米二氧化硅按0.3～0.6：1：0.5～0.8的质量比复配而成；本发明所生产的混凝土不仅具有较好的韧性及力学性能，还具有收缩率低的优点；另外，中砂、碎石等物料的协同使用，能保证混凝土的机械强度，进一步保证了混凝土低收缩性能的优点。
Low-shrinkage high-toughness concrete and production process thereof
一种低收缩率高韧性混凝土及其生产工艺
WANG YUXIANG (author) / MIAO XUEZHONG (author) / MIAO GUOLIANG (author)
2023-12-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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