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A platform for research: civil engineering, architecture and urbanism
Low-shrinkage high-strength self-compacting concrete and preparation method thereof
The invention discloses low-shrinkage high-strength self-compacting concrete and a preparation method thereof, and relates to the field of concrete materials. Wherein the self-compacting concrete comprises raw materials of sulphoaluminate cement, a mineral admixture, gravel, fine sand, an additive and water, the additive comprises polyether modified silicone oil, sodium methylene dinaphthalene sulfonate and a polycarboxylate superplasticizer, and the weight ratio of the polyether modified silicone oil to the sodium methylene dinaphthalene sulfonate to the polycarboxylate superplasticizer is (2-3): (1-2): 1. The self-compacting concrete has the advantages of being small in dry shrinkage, high in strength and good in uniformity, and the surface of a concrete prefabricated part prepared from the low-shrinkage self-compacting concrete is free of voids and pits.
本发明公开了一种低收缩高强自密实混凝土及其制备方法，涉及混凝土材料领域。其中，自密实混凝土包括原料硫铝酸盐水泥、矿物掺和料、碎石、细砂、外加剂和水，外加剂包括聚醚改性硅油、亚甲基二萘磺酸钠与聚羧酸减水剂，所述聚醚改性硅油、亚甲基二萘磺酸钠与聚羧酸减水剂的重量比为（2‑3）:（1‑2）：1。该自密实混凝土具有干缩性小、强度高、均匀性好的优点，采用该低收缩自密实混凝土制得的混凝土预制件表面无蜂窝麻面。
Low-shrinkage high-strength self-compacting concrete and preparation method thereof
The invention discloses low-shrinkage high-strength self-compacting concrete and a preparation method thereof, and relates to the field of concrete materials. Wherein the self-compacting concrete comprises raw materials of sulphoaluminate cement, a mineral admixture, gravel, fine sand, an additive and water, the additive comprises polyether modified silicone oil, sodium methylene dinaphthalene sulfonate and a polycarboxylate superplasticizer, and the weight ratio of the polyether modified silicone oil to the sodium methylene dinaphthalene sulfonate to the polycarboxylate superplasticizer is (2-3): (1-2): 1. The self-compacting concrete has the advantages of being small in dry shrinkage, high in strength and good in uniformity, and the surface of a concrete prefabricated part prepared from the low-shrinkage self-compacting concrete is free of voids and pits.
本发明公开了一种低收缩高强自密实混凝土及其制备方法，涉及混凝土材料领域。其中，自密实混凝土包括原料硫铝酸盐水泥、矿物掺和料、碎石、细砂、外加剂和水，外加剂包括聚醚改性硅油、亚甲基二萘磺酸钠与聚羧酸减水剂，所述聚醚改性硅油、亚甲基二萘磺酸钠与聚羧酸减水剂的重量比为（2‑3）:（1‑2）：1。该自密实混凝土具有干缩性小、强度高、均匀性好的优点，采用该低收缩自密实混凝土制得的混凝土预制件表面无蜂窝麻面。
Low-shrinkage high-strength self-compacting concrete and preparation method thereof
一种低收缩高强自密实混凝土及其制备方法
LUO MENGXING (author)
2023-05-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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