Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modification-based early strength concrete and preparation process thereof
The invention provides early strength type concrete based on modification and a preparation process thereof, the concrete comprises an early strength agent, a water reducing agent and a mineral admixture, and the early strength agent comprises the following components: modified nano C-S-H, calcium formate, triethanolamine and sodium sulfate; the modified nano C-S-H accounts for 30-45% of the mass of the early strength agent; the mineral admixture comprises the following components: calcium chloride, calcium bicarbonate and aluminum ore sand; the water reducing agent is a polycarboxylic acid water reducing agent; the doping amount of the early strength agent is 2.5%-7%. A modified early strength agent and a mineral admixture are added into concrete, an organic early strength agent and an inorganic early strength agent are compounded, and meanwhile, modified nano C-S-H is added to enhance the compressive strength of the concrete at low temperature; the sodium sulfate can obviously promote the hydration process of the concrete, can accelerate the hydration reaction of the cement, and reduces the setting time of the cement.
本发明提供了一种基于改性的早强型混凝土及其制备工艺，所述混凝土中包括早强剂、减水剂以及矿物掺合料，所述早强剂包括以下组分：改性纳米C‑S‑H、甲酸钙、三乙醇胺、硫酸钠；所述改性纳米C‑S‑H占早强剂质量的30～45％；所述矿物掺合料包括以下组分：氯化钙、碳酸氢钙、铝矿砂；所述减水剂为聚羧酸减水剂；所述早强剂的掺杂量为2.5％～7％。通过在混凝土中添加改性的早强剂以及矿物掺合料，将有机早强剂与无机早强剂进行复合，同时添加改性的纳米C‑S‑H增强混凝土在低温下的抗压强度；硫酸钠能对混凝土的水化过程起到明显的促进作用，能够加速水泥的水化反应，减少水泥的凝结时间。
Modification-based early strength concrete and preparation process thereof
The invention provides early strength type concrete based on modification and a preparation process thereof, the concrete comprises an early strength agent, a water reducing agent and a mineral admixture, and the early strength agent comprises the following components: modified nano C-S-H, calcium formate, triethanolamine and sodium sulfate; the modified nano C-S-H accounts for 30-45% of the mass of the early strength agent; the mineral admixture comprises the following components: calcium chloride, calcium bicarbonate and aluminum ore sand; the water reducing agent is a polycarboxylic acid water reducing agent; the doping amount of the early strength agent is 2.5%-7%. A modified early strength agent and a mineral admixture are added into concrete, an organic early strength agent and an inorganic early strength agent are compounded, and meanwhile, modified nano C-S-H is added to enhance the compressive strength of the concrete at low temperature; the sodium sulfate can obviously promote the hydration process of the concrete, can accelerate the hydration reaction of the cement, and reduces the setting time of the cement.
本发明提供了一种基于改性的早强型混凝土及其制备工艺，所述混凝土中包括早强剂、减水剂以及矿物掺合料，所述早强剂包括以下组分：改性纳米C‑S‑H、甲酸钙、三乙醇胺、硫酸钠；所述改性纳米C‑S‑H占早强剂质量的30～45％；所述矿物掺合料包括以下组分：氯化钙、碳酸氢钙、铝矿砂；所述减水剂为聚羧酸减水剂；所述早强剂的掺杂量为2.5％～7％。通过在混凝土中添加改性的早强剂以及矿物掺合料，将有机早强剂与无机早强剂进行复合，同时添加改性的纳米C‑S‑H增强混凝土在低温下的抗压强度；硫酸钠能对混凝土的水化过程起到明显的促进作用，能够加速水泥的水化反应，减少水泥的凝结时间。
Modification-based early strength concrete and preparation process thereof
一种基于改性的早强型混凝土及其制备工艺
ZHANG WENFENG (Autor:in) / CHENG HUI (Autor:in)
02.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
C90 early strength resin concrete and preparation process thereof
| Europäisches Patentamt | 2022
Early strength concrete and preparation method thereof
| Europäisches Patentamt | 2024
Early strength concrete with super retarding effect, and preparation process thereof
| Europäisches Patentamt | 2020
Preparation process of early-strength desulfurization ash-based concrete
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2022