公开(公告)号：US20240369528A1

公开(公告)日：2024-11-07

申请号：US18030180

申请日：2022-02-22

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Dongshuai HOU ,  Muhan WANG ,  Xiang JI ,  Pan WANG ,  Xinpeng WANG ,  Yue ZHANG

IPC: G01N33/38 ,  C04B24/32 ,  C04B111/00

Abstract: The present disclosure provides a performance testing method and system for a polycarboxylate superplasticizer in a concrete system. An interface model is constructed based on a calcium silicate hydrate (C—S—H) gel model and a molecular dynamics model of a polycarboxylate superplasticizer, which can cover complexity of a cement particle interface and variability of the polycarboxylate superplasticizer, and can also establish a link between a microstructure of the polycarboxylate superplasticizer and a macroscopic fluidity of a cement across multiple scales. Meanwhile, friction resistance is accurately calculated based on the constructed interface model to accurately test a performance of the polycarboxylate superplasticizer, thereby shortening a screening cycle of the polycarboxylate superplasticizer and improving a performance optimization efficiency.

公开(公告)号：US20240228686A1

公开(公告)日：2024-07-11

申请号：US17928012

申请日：2022-01-19

Applicant: Qingdao University of Technology

Inventor： Dongshuai HOU ,  Cong WU ,  Bing YIN ,  Shaochun LI ,  Xinpeng WANG ,  Pan WANG

IPC: C08F265/06 ,  C09D5/08 ,  C09D151/00

CPC classification number: C08F265/06 ,  C09D5/08 ,  C09D151/003

Abstract: The present disclosure provides a styrene acrylate-siloxane composite emulsion with a core-shell structure, and a preparation method and use thereof, and relates to the technical field of protective coatings. In the present disclosure, a core emulsion is prepared through two-step emulsification with styrene, an acrylate monomer, a first emulsifying agent, a first initiator, a second initiator, an alkaline reagent, and water as raw materials; then a shell emulsion is prepared with a siloxane monomer, a hydroxyl-containing acrylate monomer, an emulsifying agent, and water as raw materials; and then the core emulsion, the shell emulsion, and an initiator are subjected to a grafting reaction to obtain the styrene acrylate-siloxane composite emulsion with a core-shell structure.

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：US20240384055A1

公开(公告)日：2024-11-21

申请号：US18035093

申请日：2022-01-19

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Dongshuai HOU ,  Cong WU ,  Bing YIN ,  Shaochun LI ,  Xinpeng WANG ,  Pan WANG

IPC: C08K3/04 ,  C08F2/22 ,  C08F220/18

Abstract: The present disclosure relates to the technical field of protective coatings, and provides a graphene oxide (GO)-modified styrene-acrylic Pickering emulsion and a composite emulsion, and preparation methods and use. In the present disclosure, GO is added during polymerization of a styrene-acrylic monomer, and the GO is attached to an interface of a styrene-acrylic core while forming the styrene-acrylic core; and the GO is “stitched” at the interface of the styrene-acrylic core by a silane coupling agent, thus giving the GO a better dispersion effect. After adding a shell phase emulsion, a part of the styrene-acrylic core that is not completely wrapped by a GO sheet may be grafted with a shell phase, and cross-linking between a core phase and the shell phase can further enhance a steric stability of the GO; and the GO can fully connect the styrene-acrylic core with a siloxane shell, improving the molecular configuration of a siloxane component. In the composite emulsion, GO has desirable dispersibility and is not easy to agglomerate, such that the composite emulsion has an excellent performance and can significantly improve the durability of a cement-based material.

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.

公开(公告)号：US20250011235A1

公开(公告)日：2025-01-09

申请号：US18274388

申请日：2022-04-02

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Dongshuai HOU ,  Bing YIN ,  Xianle HUA ,  Huafeng XU ,  Fangyu FAN ,  Kailu HAN ,  Pan WANG ,  Xinpeng WANG ,  Zuquan JIN

IPC: C04B24/26 ,  C04B16/06 ,  C04B22/12 ,  C04B22/14 ,  C04B24/16 ,  C04B28/04 ,  C04B40/00 ,  C04B103/00

Abstract: Disclosed are a dual-scale toughened cement-based composite material and use thereof. The cement-based composite material includes a cementitious material, a polymer monomer, an initiator, a crosslinking agent, and fibers, wherein functional groups of the polymer monomer include a carbon-carbon double bond and a carboxyl group; and the fibers include steel fibers and/or synthetic fibers, the synthetic fibers including one or more selected from the group consisting of polyvinyl alcohol fibers, polypropylene fibers, glass fibers, and carbon fibers.