2022 TDA 3-1 COMPLETED
Release time: 2024/07/17 Publisher： original Views：
Research and Application of Novel Polyether macromonomer and Ultra-highly Dispersing Polycarboxylate Superplasticizer
Principal Investigator：
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Bai Jie China Building Materials Academy |
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Project Background:
Ultra-high performance concrete (UHPC), has achieved a great leap in the performance of engineering materials, with ultra-high strength, low brittleness and excellent durability, which can effectively compensate for many shortcomings of ordinary concrete. However, UHPC is usually reinforced and toughened by adding steel fiber or polymer fiber, resulting in poor fluidity, high viscosity, high cost of the mixture, which greatly limits its application in multiple scenarios. Develop a new type of polycarboxylate superplasticizer with ultra-high water reduction rate to reduce the water-binder ratio and obtain the good workability and ultra-high strength of UHPC.
Aims & Goals:
1. To synthesize new type polyoxyethylene ether monomer and ultra-highly dispersing water reducer;
2. To prepare UHPC concrete material with ultra-highly dispersing water reducer, and elaborate the mechanism of achieving high dispersion in ultra-low w/c ratio systems;
3. To realize the reduction of cement dosage, w/c ratio, durability, carbon emission and cost in C30~C50 concrete through the different dosages of polycarboxylic acid superplasticizers.
1. Deveoled an ultra-highly dispersible water reducing agent using ethylene oxide as raw material, which can reduce the amount of cement and water by 20% and 25% in C30 to C50 concrete.
2. Exploring the possibility of replacing steel fibers with non-metallic fibers (PE and PP) in UHPC.
PAPER 1: 'Preparation and performance of EPEG-type PCE and its application in ultra-high performance concrete'
The 16th International Congress on the Chemistry of Cement 2023 (ICCC2023)
PAPER 2: 'Research status and prospect of domestic polyether macromonomer' (in Chinese)
China Concrete
PATENT 1: An ultra-high dispersed water reducer and its preparation method
PATENT 2: A hyperbranched polyether and its preparation method
PATENT 3: A ultra-highly dispersing polycarboxylate superplasticizer and its preparation method
PATENT 4: An ultra-high dispersed water reducer and its preparation method
DEMONSTRATION 1：The pilot production of novel polyether macromomer was completed in the plant of Liaoning Kelong Fine Chemical (Kelong Shares)
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DEMONSTRATION 2：Ultra-highly Dispersing Polycarboxylate Superplasticizer(PCE) for Ultra-High Performance Concrete(UHPC) was demonstrated in the deck paving of Moshuihe Bridge in Shandong Province.
