Organic/inorganic dual network formed by epoxy and cement

Zhang, Guoliang; Zhu, Zhennan; Ma, Chunfeng; Zhang, Guangzhao

doi:10.1002/pc.24801

Cited by 7 publications

(2 citation statements)

References 41 publications

(36 reference statements)

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“…The presence of sizable cement particles within the spherical grains is noticeable. These cement particles are evenly dispersed within the encapsulation material to bolster the hardness and high-temperature resilience of the epoxy resin shell, in line with prior research [36][37][38].…”

Section: Scanning Electron Microscopysupporting

confidence: 72%

Preparation and Experimental Study of Phase Change Materials for Asphalt Pavement

Huang,

Wei,

et al. 2023

Materials

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This study aimed to address the issue of high-temperature challenges in asphalt pavement by developing two types of phase change materials (PCMs) for temperature control. Encapsulated paraffin wax particles (EPWP) and encapsulated myristic acid particles (EMAP) were synthesized using acid-etched ceramsite (AECS) as the carrier, paraffin wax (PW) or myristic acid (MA) as the core material, and a combination of epoxy resin and cement as the encapsulation material. The investigation encompassed leakage tests on PCMs; rutting plate rolling forming tests; SEM, FTIR, XRD, and TG-DSC microscopic tests; as well as heat storage and release tests and temperature control assessments using a light heating device. The study revealed the following key findings. Both types of PCMs exhibited no PCM leakage even under high temperatures and demonstrated low crushing ratios during rut-forming tests. Microscopic evaluations confirmed the chemical stability and phase compatibility of the constituents within the two types of PCMs. Notably, the phase change enthalpies of EPWP and EMAP were relatively high, measuring 133.31 J/g and 138.52 J/g, respectively. The utilization of AECS as the carrier for PCMs led to a substantial 4.61-fold increase in the adsorption rate. Moreover, the PCMs showcased minimal mass loss at 180 °C, rendering them suitable for asphalt pavement applications. The heat storage and release experiments further underscored the PCMs’ capacity to regulate ambient temperatures through heat absorption and release. When subjected to light heating, the maximum temperatures of the two types of phase change Marshall specimens were notably lower by 6.6 °C and 4.8 °C, respectively, compared to standard Marshall specimens. Based on comprehensive testing, EPWP displayed enhanced adaptability and demonstrated substantial potential for practical implementation in asphalt pavements.

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Section: Scanning Electron Microscopysupporting

confidence: 72%

Preparation and Experimental Study of Phase Change Materials for Asphalt Pavement

Huang,

Wei,

et al. 2023

Materials

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“…The second category is organic repair materials which mainly include epoxy resin, acrylic resin, polyurethane, and acrylamide [ 12 ]. The third category is polymer repair materials compounded by organic and inorganic materials, for example, vinyl polyester acid emulsion modified cement mortar, propyl cement mortar, and epoxy mortar concrete [ 13 , 14 ]. However, there are many kinds of repair materials, and they all have different advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Performance of Repair Materials for Surface Defects in Pavement Concrete

Mao

Huang

et al. 2023

Materials

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Concrete surface defects are very complex and diverse, which is a great test for repair materials. The efficiency and durability of the repair system depend on the bonding effect between the concrete and the repair material. However, the rapid increase in system viscosity during the reaction of repair materials is an important factor affecting the infiltration effect. In the present work, the infiltration consolidation repair material was prepared, and its basic properties (viscosity, surface drying time and actual drying time, infiltration property) and mechanical properties were evaluated. Finally, the infiltration depth, film-forming thickness, and anti-spalling ability of concrete under a single-side freeze–thaw cycle are revealed. The results showed that using ethyl acetate could rapidly reduce the viscosity of the repair material, and the repair material could penetrate 20–30 mm into the concrete within 10 min. It was found by laser confocal microscopy that the thickness of the film formation after 3 days was only 29 µm. In the mortar fracture repair test to evaluate the bond strength, the bond strength of the repaired material reached 9.18 MPa in 28 days, and the new fracture surface was in the mortar itself. In addition, the freeze–thaw cycle test was carried out on the composite specimens under salt solution to verify the compatibility of the designed repair material with the concrete substrate. The data showed that the average amount of spalling was only 1704.4 g/m2 when 10% ethyl acetate was added. The penetrating repair material in this study has good infiltration performance, which can penetrate a certain depth in the surface pores and form a high-performance consolidation body, forming a “rooted type” filling.

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Influence of Sub-zero Temperatures on the Dynamic Behaviour of Foam Concrete with Sand

Gao

et al. 2021

KSCE Journal of Civil Engineering

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Organic/inorganic dual network formed by epoxy and cement

Cited by 7 publications

References 41 publications

Preparation and Experimental Study of Phase Change Materials for Asphalt Pavement

Preparation and Experimental Study of Phase Change Materials for Asphalt Pavement

Preparation and Performance of Repair Materials for Surface Defects in Pavement Concrete

Influence of Sub-zero Temperatures on the Dynamic Behaviour of Foam Concrete with Sand

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