Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Quick-hardening early-strength ultra-high performance concrete and preparation method thereof
The invention relates to a quick-hardening early-strength ultra-high performance concrete, which mainly comprises the following raw materials: a cementing material, a coarse aggregate, a fine aggregate, steel fibers, a water reducing agent, water and an early strength agent, has the characteristics of short setting time, high early strength and no shrinkage of later strength, can meet the requirements of quick repair, accelerated production efficiency and the like, and has good durability. The system can be widely applied to first-aid repair and rush-building projects; the sulphoaluminate cement is selected as a main cementing material, the defect that the early strength of Portland cement is slowly developed is effectively avoided, and compared with traditional Portland cement, the sulphoaluminate cement production process has the advantages that the addition amount of limestone in a raw material is greatly reduced, so that the heat consumption for decomposing CaCO3 and the CO2 discharge amount are greatly reduced, the clinker firing temperature is low, and the production cost is low. The requirements of energy conservation and emission reduction are met; sodium sulfate is selected as an early strength agent, so that the reaction speed of calcium sulphoaluminate is increased, ettringite and alumina gel are generated and form a compact crystal structure net with hydrated calcium silicate, and the structure is more compact.
一种快硬早强型超高性能混凝土，其主要原料包含胶凝材料、粗骨料、细骨料、钢纤维、减水剂、水和早强剂，其具有凝结时间快，早期强度高，后期强度不倒缩的特点，能满足快速修复、加速生产效率等要求，并且具有良好的耐久性能，可广泛应用于抢修、抢建工程；选用硫铝酸盐水泥作为主要胶凝材料，有效规避硅酸盐水泥早期强度发展缓慢的缺点，而且硫铝酸盐水泥生产工艺跟传统硅酸盐水泥相比，生料中石灰石的配入量大大降低，从而用以分解CaCO3的热耗、排出CO2量均大幅度降低，且熟料烧成温度较低，符合节能减排要求；选用硫酸钠作为早强剂，使硫铝酸钙反应速度加快，生成钙矾石和铝胶，与水化硅酸钙形成致密的结晶结构网，使得结构更加致密。
Quick-hardening early-strength ultra-high performance concrete and preparation method thereof
The invention relates to a quick-hardening early-strength ultra-high performance concrete, which mainly comprises the following raw materials: a cementing material, a coarse aggregate, a fine aggregate, steel fibers, a water reducing agent, water and an early strength agent, has the characteristics of short setting time, high early strength and no shrinkage of later strength, can meet the requirements of quick repair, accelerated production efficiency and the like, and has good durability. The system can be widely applied to first-aid repair and rush-building projects; the sulphoaluminate cement is selected as a main cementing material, the defect that the early strength of Portland cement is slowly developed is effectively avoided, and compared with traditional Portland cement, the sulphoaluminate cement production process has the advantages that the addition amount of limestone in a raw material is greatly reduced, so that the heat consumption for decomposing CaCO3 and the CO2 discharge amount are greatly reduced, the clinker firing temperature is low, and the production cost is low. The requirements of energy conservation and emission reduction are met; sodium sulfate is selected as an early strength agent, so that the reaction speed of calcium sulphoaluminate is increased, ettringite and alumina gel are generated and form a compact crystal structure net with hydrated calcium silicate, and the structure is more compact.
一种快硬早强型超高性能混凝土，其主要原料包含胶凝材料、粗骨料、细骨料、钢纤维、减水剂、水和早强剂，其具有凝结时间快，早期强度高，后期强度不倒缩的特点，能满足快速修复、加速生产效率等要求，并且具有良好的耐久性能，可广泛应用于抢修、抢建工程；选用硫铝酸盐水泥作为主要胶凝材料，有效规避硅酸盐水泥早期强度发展缓慢的缺点，而且硫铝酸盐水泥生产工艺跟传统硅酸盐水泥相比，生料中石灰石的配入量大大降低，从而用以分解CaCO3的热耗、排出CO2量均大幅度降低，且熟料烧成温度较低，符合节能减排要求；选用硫酸钠作为早强剂，使硫铝酸钙反应速度加快，生成钙矾石和铝胶，与水化硅酸钙形成致密的结晶结构网，使得结构更加致密。
Quick-hardening early-strength ultra-high performance concrete and preparation method thereof
一种快硬早强型超高性能混凝土及其制备方法
XU GANG (Autor:in) / LI YUE (Autor:in) / LEI JIANFENG (Autor:in) / ZHOU WANQING (Autor:in)
24.01.2025
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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