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A platform for research: civil engineering, architecture and urbanism
The study on compressive mechanical properties of rigid polyurethane grout materials with different densities
https://orcid.org/0000-0003-3916-0303
Highlights The grout materials with different densities show elastoplastic or atypical brittle characteristic. These elastoplastic and atypical brittle characteristics were explained on the micro scale. Two integral models were proposed to quantify the different mechanical characteristics. Two simplified integral models were proposed to make models easy to be applied.
Abstract The rigid polyurethane grout materials with different densities show elastoplastic or atypical brittle characteristic, which will significantly affect their performance. To clarify these mechanical characteristics of polyurethane foams with different densities, uniaxial compression tests and SEM experiments were carried out. To further describe these different mechanical characteristics quantitatively, two integral models based on superposition and segmentation methods were proposed, respectively. Moreover, two simplified integral models were developed to make models easy to be applied. Through error analysis, it is found that the average errors of integral models are less than 0.02 MPa and the average errors of simplified integral models are less than 0.035 MPa. The integral models are accurate while the parameters of simplified integral models are less.
The study on compressive mechanical properties of rigid polyurethane grout materials with different densities
https://orcid.org/0000-0003-3916-0303
Highlights The grout materials with different densities show elastoplastic or atypical brittle characteristic. These elastoplastic and atypical brittle characteristics were explained on the micro scale. Two integral models were proposed to quantify the different mechanical characteristics. Two simplified integral models were proposed to make models easy to be applied.
Abstract The rigid polyurethane grout materials with different densities show elastoplastic or atypical brittle characteristic, which will significantly affect their performance. To clarify these mechanical characteristics of polyurethane foams with different densities, uniaxial compression tests and SEM experiments were carried out. To further describe these different mechanical characteristics quantitatively, two integral models based on superposition and segmentation methods were proposed, respectively. Moreover, two simplified integral models were developed to make models easy to be applied. Through error analysis, it is found that the average errors of integral models are less than 0.02 MPa and the average errors of simplified integral models are less than 0.035 MPa. The integral models are accurate while the parameters of simplified integral models are less.
The study on compressive mechanical properties of rigid polyurethane grout materials with different densities
https://orcid.org/0000-0003-3916-0303
Highlights The grout materials with different densities show elastoplastic or atypical brittle characteristic. These elastoplastic and atypical brittle characteristics were explained on the micro scale. Two integral models were proposed to quantify the different mechanical characteristics. Two simplified integral models were proposed to make models easy to be applied.
Abstract The rigid polyurethane grout materials with different densities show elastoplastic or atypical brittle characteristic, which will significantly affect their performance. To clarify these mechanical characteristics of polyurethane foams with different densities, uniaxial compression tests and SEM experiments were carried out. To further describe these different mechanical characteristics quantitatively, two integral models based on superposition and segmentation methods were proposed, respectively. Moreover, two simplified integral models were developed to make models easy to be applied. Through error analysis, it is found that the average errors of integral models are less than 0.02 MPa and the average errors of simplified integral models are less than 0.035 MPa. The integral models are accurate while the parameters of simplified integral models are less.
The study on compressive mechanical properties of rigid polyurethane grout materials with different densities
Liu, Kai (author) / Liang, Wei (author) / Ren, Fengmei (author) / Ren, Jingge (author) / Wang, Fang (author) / Ding, Heng (author)
Construction and Building Materials ; 206 ; 270-278
2019-02-02
9 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2019
Compressive Properties of Rigid Polyurethane Foams
| British Library Online Contents | 1999
High-strain-rate Compressive Behavior of a Rigid Polyurethane Foam with Various Densities
| British Library Online Contents | 2002