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12 Results Found

  • Article
  • Open Access
3 Citations
1,917 Views
15 Pages

3 January 2024

Polyurethane-cement composite are widely used in modern civil engineering, and the method of adding diluent is often used to adjust the construction process to adapt to the engineering environment. Studies have shown that the addition of diluent impa...

  • Article
  • Open Access
258 Views
23 Pages

1 December 2025

To address the issue of restricted grout diffusion caused by seepage effects during grouting in sandy soil layers, this study proposes an optimised grouting method for water-based polyurethane-cement composite grout (WPU-CS) under vacuum-pressure syn...

  • Article
  • Open Access
12 Citations
2,364 Views
15 Pages

Grouting Mechanism of Polyurethane Composite Materials in Asphalt Pavement Subsidence

  • Maoping Ran,
  • Xinxing Zhou,
  • Yuan Yan,
  • Ruiqie Jiang and
  • Xinglin Zhou

6 November 2023

The mechanical properties of polyurethane grouting materials were significantly improved when cement, sodium meta-silicate, red mud, slag, and fly ash were added. However, the grouting mechanisms of polyurethane composite materials are not clear. The...

  • Article
  • Open Access
19 Citations
4,255 Views
19 Pages

Performance Evaluation of the Polyurethane-Based Composites Prepared with Recycled Polymer Concrete Aggregate

  • Wenbo Ma,
  • Zenggang Zhao,
  • Shuaicheng Guo,
  • Yanbing Zhao,
  • Zhiren Wu and
  • Caiqian Yang

30 January 2020

Currently the investigation on recycled cement concrete aggregate has been widely conducted, while the understanding of the recycled polymer concrete aggregate is still limited. This study aims to fill this knowledge gap through the experimental inve...

  • Article
  • Open Access
3 Citations
2,015 Views
14 Pages

Preparation and Evaluation Mechanic Damping Properties of Fused Silica Powder@Polyurethane Urea/Cement Composites

  • Hao Cheng,
  • Peihui Yan,
  • Fei Wan,
  • Chao Feng,
  • Yunfei Zhu,
  • Ping Lv and
  • Mingliang Ma

11 July 2022

In this paper, cement based on fused silica powder @ polyurethane urea (FSP@PUU) with a micro constrained damping structure was studied. Firstly, FSP@PUU core-shell particles were prepared by heterogeneous stepwise addition polymerization method and...

  • Article
  • Open Access
17 Citations
5,063 Views
19 Pages

13 May 2021

This paper aims to provide a preliminary assessment of polyurethane adhesive applicability as an alternative to conventional cement-based adhesives used to fix thermal insulation materials to substrates concerning mineral wool-based external thermal...

  • Article
  • Open Access
4 Citations
1,356 Views
27 Pages

Potential Use of Castor Oil-Based Polyurethane Matrix Composite with Miriti Fiber Filling as Thermal Insulation Applied to Metal Tiles

  • Waldemiro José Assis Gomes Negreiros,
  • Jean da Silva Rodrigues,
  • Maurício Maia Ribeiro,
  • Douglas Santos Silva,
  • Raí Felipe Pereira Junio,
  • Sergio Neves Monteiro and
  • Alessandro de Castro Corrêa

26 March 2025

The Amazon biome’s climate, with annual temperatures above 30 °C and humidity over 90%, poses challenges for building thermally comfortable structures without expensive cooling systems. This study developed a castor oil-based polyurethane (...

  • Article
  • Open Access
1,061 Views
17 Pages

22 January 2025

This paper presents the results of an experimental investigation on a steel-reinforced polyurethane (SRPU) composite system with a mineral interlayer, designed for the protection of existing structures. The composite SRPU was reinforced with unidirec...

  • Article
  • Open Access
1,090 Views
22 Pages

Development and Validation of a Low-Cost Arduino-Based Lee Disc System for Thermal Conductivity Analysis of Sustainable Roofing Materials

  • Waldemiro José Assis Gomes Negreiros,
  • Jean da Silva Rodrigues,
  • Maurício Maia Ribeiro,
  • Douglas Santos Silva,
  • Raí Felipe Pereira Junio,
  • Marcos Cesar da Rocha Seruffo,
  • Sergio Neves Monteiro and
  • Alessandro de Castro Corrêa

2 September 2025

The optimization of thermal performance in buildings is essential for sustainable urban development, yet the high cost and complexity of traditional thermal conductivity measurement methods limit broader research and educational applications. This st...

  • Article
  • Open Access
3 Citations
2,680 Views
22 Pages

21 February 2023

A novel series of biodegradable polylactide-based triblock polyurethane (TBPU) copolymers covering a wide range of molecular weights and compositions were synthesized for potential use in biomedical applications. This new class of copolymers showed t...

  • Article
  • Open Access
648 Views
19 Pages

15 July 2025

Traditional cementitious coating materials struggle to meet the performance criteria for protective coatings in complex environments. This study developed a polymer-modified cement-based coating material with polymer, silica fume (SF), and quartz san...

  • Article
  • Open Access
7 Citations
3,019 Views
18 Pages

Interlaminar Shear Characteristics, Energy Consumption, and Carbon Emissions of Polyurethane Mixtures

  • Yufeng Bi,
  • Min Sun,
  • Shuo Jing,
  • Derui Hou,
  • Wei Zhuang,
  • Sai Chen,
  • Xuwang Jiao and
  • Quanman Zhao

17 March 2022

The interlaminar shear characteristics of a polyurethane (PU) mixture composite structure, quantitatively calculating its energy consumption and carbon emissions were analyzed in this study. Inclined shear tests were carried out on thirteen structure...