Investigation on hardening mechanism and cement hydration of Cement Asphalt Emulsion Composites

Effect of early cement hydration on the chemical stability of asphalt emulsion

Construction and Building Materials ◽

10.1016/j.conbuildmat.2013.01.009 ◽

2013 ◽

Vol 42 ◽

pp. 146-151 ◽

Cited By ~ 43

Author(s):

Fazhou Wang ◽

Yunpeng Liu ◽

Shuguang Hu

Keyword(s):

Chemical Stability ◽

Cement Hydration ◽

Asphalt Emulsion

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Research on Hardening Mechanism of Cement-Emulsified Asphalt-Epoxy Resin

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.430-432.434 ◽

2012 ◽

Vol 430-432 ◽

pp. 434-437 ◽

Cited By ~ 1

Author(s):

Fan Shen ◽

Shao Long Huang ◽

Zheng Sun ◽

Qing Jun Ding

Keyword(s):

Epoxy Resin ◽

Basic Structure ◽

Heat Of Hydration ◽

Asphalt Emulsion ◽

Hardening Mechanism ◽

Waterborne Epoxy ◽

Endothermic Reactions ◽

Hardening Mechanisms ◽

Waterborne Epoxy Resin ◽

Emulsified Asphalt

This article researched the cementation and hardening mechanisms of cement asphalt emulsion and waterborne epoxy mortar by using the XRD, and heat of hydration testing methods. The results of this study show that the mixture of cement with epoxy and cement- asphalt-epoxy are endothermic reaction. There are occurring endothermic reactions between cement with epoxy. The waterborne epoxy resin and basic structure unit of ettringite [Ca3Al(OH)6•12H2O] were reacted and formed Ca-complex at earlier period of hydration.

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Laboratory Investigation into Early-Age Strength Improvement of Cold Recycled Asphalt Mixture Containing Asphalt Emulsion and Cement

Advances in Civil Engineering ◽

10.1155/2019/7274204 ◽

2019 ◽

Vol 2019 ◽

pp. 1-10 ◽

Cited By ~ 1

Author(s):

Yinfei Du ◽

Lingxiang Kong ◽

Tangzhong Wei

Keyword(s):

Cement Hydration ◽

Coupling Effect ◽

Asphalt Mixture ◽

Negative Ions ◽

Curing Temperature ◽

Early Age ◽

Asphalt Emulsion ◽

Recycled Asphalt ◽

Curing Conditions ◽

Strength Improvement

Cold recycled asphalt mixture (CRAM) has been reported to be able to provide a cleaner method to rehabilitate damaged asphalt pavement. This work used the CRAM containing emulsified asphalt (AE) and cement to investigate the methods of improving its early-age strength by considering mixture composition, including the types of AE and cement and the contents of AE, cement, and moisture. The curing conditions, such as temperature and humidity, were also involved. The results show that the mixture should be carefully designed to determine optimum AE and moisture content. Also, high cement content was helpful to increase the early-age strength. By changing the curing environment, it was found that raising curing temperature and applying a relatively low humidity contributed to the early-age strength improvement. The interaction of cement hydration and AE demulsification was investigated using microimage and laboratory experiments. The results show that AE particles were easy to cluster because of the negative ions released by cement hydration. AE delayed the early cement hydration but improved the later intensity of cement hydration. The coupling effect of AE and cement resulted in higher early-age strength than those of the mixtures only with cement or only with AE. The results presented in this work are expected to give guidance for preparing a CRAM with high early-age strength.

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Study on the early cement hydration process in the presence of cationic asphalt emulsion

Construction and Building Materials ◽

10.1016/j.conbuildmat.2020.120025 ◽

2020 ◽

Vol 261 ◽

pp. 120025

Author(s):

Wei Li ◽

Ziming Mao ◽

Guodong Xu ◽

Honglei Chang ◽

Jinxiang Hong ◽

...

Keyword(s):

Cement Hydration ◽

Hydration Process ◽

Asphalt Emulsion

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Effects of Anionic Asphalt Emulsion on Early-Age Cement Hydration

International Congress on Polymers in Concrete (ICPIC 2018) ◽

10.1007/978-3-319-78175-4_16 ◽

2018 ◽

pp. 143-149

Author(s):

Jinxiang Hong ◽

Wei Li ◽

Kejin Wang

Keyword(s):

Cement Hydration ◽

Early Age ◽

Asphalt Emulsion

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Antiphase Boundaries in Ordered Ni3FE Crystals

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010006221x ◽

1969 ◽

Vol 27 ◽

pp. 62-63

Author(s):

Y. H. Liu

Keyword(s):

Domain Size ◽

Antiphase Domain ◽

X Ray Diffraction ◽

X Ray ◽

Hardening Mechanism ◽

Superlattice Structure ◽

Disordered Phase ◽

Domain Boundaries ◽

Atomic Scattering ◽

The Difference

Ordered Ni3Fe crystals possess a LI2 type superlattice similar to the Cu3Au structure. The difference in slip behavior of the superlattice as compared with that of a disordered phase has been well established. Cottrell first postulated that the increase in resistance for slip in the superlattice structure is attributed to the presence of antiphase domain boundaries. Following Cottrell's domain hardening mechanism, numerous workers have proposed other refined models also involving the presence of domain boundaries. Using the anomalous X-ray diffraction technique, Davies and Stoloff have shown that the hardness of the Ni3Fe superlattice varies with the domain size. So far, no direct observation of antiphase domain boundaries in Ni3Fe has been reported. Because the atomic scattering factors of the elements in NijFe are so close, the superlattice reflections are not easily detected. Furthermore, the domain configurations in NioFe are thought to be independent of the crystallographic orientations.

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