Development of a high strength cementitious grout for filling the joints of UHPC permanent formwork

Yang, Yongqiang; Chen, Baixi; Chen, Yong; Liu, Fucai; Xie, Xiangming; Guo, Wenying; Wang, Hengchang

doi:10.1016/j.dibe.2023.100120

Cited by 15 publications

(4 citation statements)

References 31 publications

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“…In this context, performance in the construction industry needs a significant shift towards a more regenerative, practical, efficient and sustainable approach, so some of the key CE practices in construction include, the reuse of buildings, rather than demolishing entire structures, the renovation and adaptation of existing buildings is encouraged [115,116]. This not only preserves architectural history and reduces demolition waste, but also saves pristine resources and energy.…”

Section: Application Areasmentioning

confidence: 99%

Polymers in Circular Economy: A Comprehensive Approach to Sustainability. An overview.

Aranda,

Zúñiga,

Rivas

2023

J. Chil. Chem. Soc.

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The circular economy has emerged as a fundamental paradigm in the search for sustainable solutions in the global economic context, as an innovative approach that seeks to transform the way we consume and produce goods and services. Its fundamental principles are based on the reduction, reuse and recycling of resources, promoting sustainability and minimizing waste. This new way of thinking has applications in a variety of sectors, from manufacturing to waste management. The implementation of government policies and regulations play an important role in promoting the circular economy by setting standards and requirements for responsible resource management. However, there are challenges and barriers that need to be overcome, such as resistance to change and the need for upfront investments. Despite these obstacles, there are successful examples of circular economy around the world, demonstrating the tangible benefits of this approach in terms of waste reduction. This paper presents an exploration and analysis of the circular economy, providing a vision of its foundation, applications and challenges in promoting a more sustainable management of resources and products globally.

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Section: Application Areasmentioning

confidence: 99%

Polymers in Circular Economy: A Comprehensive Approach to Sustainability. An overview.

Aranda,

Zúñiga,

Rivas

2023

J. Chil. Chem. Soc.

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“…24 Hybrid fiber cementitious composites (HFC) have unique mechanical properties and a variety of fiber materials to choose from, which can effectively improve such problems. 25,26 ManjushaK et al 27 used FEA to study the mechanical behavior of engineered cementitious composites (ECC)-encased CFST columns under different eccentric loads, and the study showed that ECC-encased CFST columns had good performance. Chu 28 conducted axial load tests on CFST columns composed of ultra-high performance concrete, ECC, lightweight concrete (LWC), and clastic rubber concrete (CRC).…”

Section: Introductionmentioning

confidence: 99%

“…Specifically, the outer concrete is prone to cracking during normal use, while the CFST column as the skeleton is still in the elastic stage, which leads to the corrosion of CFST 24 . Hybrid fiber cementitious composites (HFC) have unique mechanical properties and a variety of fiber materials to choose from, which can effectively improve such problems 25,26 . ManjushaK et al 27 used FEA to study the mechanical behavior of engineered cementitious composites (ECC)‐encased CFST columns under different eccentric loads, and the study showed that ECC‐encased CFST columns had good performance.…”

Section: Introductionmentioning

confidence: 99%

Experimental and simulation study on seismic performance of steel‐PVA hybrid fiber cementitious composites‐encased CFST

Li,

Chen,

Cen

et al. 2024

Structural Concrete

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Six hybrid steel and PVA fiber cementitious composite (S&PFCC)‐encased concrete‐filled steel tube (CFST) columns were designed and fabricated, and the effects of axial compression ratio, core concrete strength grade and steel tube thickness on the seismic performance of composite columns were studied. The test results show that the increase of core concrete strength can obviously improve the bearing capacity and energy dissipation capacity of composite column and can restrain the strain growth rate of steel tube after yielding. Low axial compression ratio and thicker steel tube thickness can improve the overall seismic performance of composite columns. Three calculation methods are modified, and the modified An method can predict the lateral bearing capacity of composite column well. Finally, based on the OpenSees finite element software, the seismic performance of the CFST column wrapped in S&PFCC is simulated to verify the test, and the numerical study shows that the seismic performance of the composite column can be optimized by increasing the steel fiber content, while PVA fiber has a weak effect in the elastic stage, and can effectively improve the ductility of the composite column in the plastic stage.

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“…They are often used as repair materials to fill gaps of concrete structures for repair and reinforcement [2,3]. They are also used to grout sleeves to connect prefabricated components [4,5]. In addition to the formed quality of the components, the quality of the splicing between the prefabricated components is also related to the positioning accuracy, reliability of the connecting material and other factors [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of an improved grout for cementitious precast beam-column joints

Jiang,

Zhang,

Dong

et al. 2023

Mater. Res. Express

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This study proposed a new formulation for an improved grout with superior early strength and ultra-high cured strength; it was designed on the basis of the theory of closest packing. Orthogonal experiments were conducted to analyse the effects of four factors, silica powder content, water reducer content, steel fibre content, and water-cement ratio, on the flowability, compressive strength, and compactness of grout. The criteria for determining whether the grout met the requirements for Code included initial flowability greater than 300 mm, flowability more than 260 mm after 30 minutes, and compressive strength more than 60 MPa after 12 hours of standard curing. The results showed that the performance of the grout satisfied specified requirements for Code with small internal voids and acceptable durability. After the ratio of raw materials was optimized, The grout sleeve test showed that the failure occurred in the steel bars outside the sleeve, and no grout pulling, slipping, splitting, or other behaviour occurred within the sleeve, which meant that the specimens met the design requirements . The development of this grout will greatly reduce construction time for Code and improve the quality of connections in prefabricated components. The results of this study will provide a reference for the design and development of new grouts in the future.

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Development of a high strength cementitious grout for filling the joints of UHPC permanent formwork

Cited by 15 publications

References 31 publications

Polymers in Circular Economy: A Comprehensive Approach to Sustainability. An overview.

Polymers in Circular Economy: A Comprehensive Approach to Sustainability. An overview.

Experimental and simulation study on seismic performance of steel‐PVA hybrid fiber cementitious composites‐encased CFST

Mechanical properties of an improved grout for cementitious precast beam-column joints

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