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1.发明申请公开(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.
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2.发明申请公开(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
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.
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