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MgO expansive cement and concrete in China: Past, present and future

Uniquely, China employs MgO already contained in cement clinker or as an expansive additive to compensate for the thermal shrinkage of mass concrete, particularly dam concrete, with almost 40years' experience in both research activities and industrial applications. Compensating shrinkage with e...

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Published in:Cement and concrete research 2014-03, Vol.57, p.1-12
Main Authors: Mo, Liwu, Deng, Min, Tang, Mingshu, Al-Tabbaa, Abir
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Language:English
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cited_by cdi_FETCH-LOGICAL-c477t-affa7e2ec26fd4440f86ed443832580369f79fa89a7c651152e538a1efc0ff6a3
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container_title Cement and concrete research
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creator Mo, Liwu
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description Uniquely, China employs MgO already contained in cement clinker or as an expansive additive to compensate for the thermal shrinkage of mass concrete, particularly dam concrete, with almost 40years' experience in both research activities and industrial applications. Compensating shrinkage with expansion produced by MgO has been proved to effectively prevent thermal cracking of mass concrete, and reduce the cost of temperature control measures and speed up the construction process. Moreover, the expansion properties of MgO could be designed flexibly, through adjusting its microstructure by changing the calcination conditions (calcining temperature and residence time). The collective knowledge and experience of MgO expansive cement and concrete is worthy of sharing with relevant engineers and researchers globally but dissemination has been hindered as most of the relevant literature is published in Chinese. This paper reviews the history, state-of-the-art progress and future research needs in the field of MgO expansive cement and concrete. •Review on near 40years' research history of MgO expansive cement and concrete•Review on the state-of-the-art progress in the field of MgO cement and concrete•Review on future work needs for extending application of MgO cement and concrete•Review on production, property design, and application of MgO in cement materials•Review on mechanical performance, durability, and soundness of MgO concrete
doi_str_mv 10.1016/j.cemconres.2013.12.007
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source ScienceDirect Freedom Collection 2022-2024
subjects Applied sciences
Buildings. Public works
Cements
Characterization (B)
China
Concrete (E)
Concrete industry
Concretes
Concretes. Mortars. Grouts
Exact sciences and technology
Expansion
Expansion (C)
General (composition, classification, performance, standards, patents, etc.)
Hydration (A)
Magnesium oxide
Mass concrete
Materials
MgO (D)
Shrinkage
Strength of materials (elasticity, plasticity, buckling, etc.)
Structural analysis. Stresses
title MgO expansive cement and concrete in China: Past, present and future
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