公开(公告)号：US20250051235A1

公开(公告)日：2025-02-13

申请号：US18721133

申请日：2022-01-14

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Dongshuai HOU ,  Xinpeng WANG ,  Di WU ,  Mengmeng LI ,  Guannan LI ,  Pan WANG

IPC: C04B28/04 ,  B28B1/08 ,  C04B14/06 ,  C04B14/48 ,  C04B18/04 ,  C04B18/14 ,  C04B24/26 ,  C04B40/00 ,  C04B40/02 ,  C04B103/30

Abstract: Provided are early-strength and quick-setting ultra-high performance concrete (UHPC), and a preparation method and use thereof. The early-strength and quick-setting UHPC includes, in parts by mass: 110 parts to 180 parts of a red mud, 70 parts to 80 parts of a silica fume, 130 parts to 290 parts of a cement, 400 parts to 500 parts of a quartz sand, 10 parts to 15 parts of a water-reducing agent, 80 parts to 100 parts of water, and 50 parts to 75 parts of a steel fiber. The preparation method includes: subjecting the silica fume, the cement, the quartz sand, and the red mud to first mixing to obtain a first premix; subjecting the first premix, the water, and the water-reducing agent to second mixing to obtain a second premix; and subjecting the second premix and the steel fiber to third mixing to obtain the early-strength and quick-setting UHPC.

公开(公告)号：US20220112131A1

公开(公告)日：2022-04-14

申请号：US17053424

申请日：2019-12-30

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Dongshuai HOU ,  Xinpeng WANG ,  Mengmeng LI ,  Qihui GENG ,  Pan WANG ,  Bing YIN ,  Yue ZHANG

IPC: C04B28/04 ,  C04B14/18 ,  C04B18/14 ,  C04B14/48 ,  C04B24/26 ,  C04B40/00 ,  C04B40/02 ,  C04B20/00

Abstract: The disclosure relates to the technical field of building materials, and in particular, to lightweight aggregate ultra-high performance concrete (UHPC) and a preparation method thereof. The lightweight aggregate UHPC provided in the disclosure is prepared from the following components in parts by weight: cement 220-260 parts; silica fume 100-120 parts; expanded perlite powder 120-160 parts; expanded perlite 230-260 parts; polycarboxylate superplasticizer 15-20 parts; steel fiber 76-93 parts; and water 140-160 parts, where a maximum particle size of the expanded perlite powder is 0.075 mm; and a particle size range of the expanded perlite is 0.075-0.6 mm. The lightweight UHPC prepared according to the design of the disclosure has excellent density performance, and can satisfy requirements of concrete components, etc. in service in super-long-span bridges, super high-rise buildings, and complex marine environments for lightweight, ultra-high strength, and ultra-high durability of cement-based materials, and has a relatively high promotion value.