Internal curing of ultra-high-performance concrete: A comprehensive overview

IF 1.7 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of the Mechanical Behavior of Materials Pub Date : 2023-01-01 DOI:10.1515/jmbm-2022-0282

S. Haruna, M. Adamu, Y. Ibrahim, M. M. Aliyu, S. I. Haruna

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Abstract

Abstract This article presents an overview of the research on the effects of internal curing (IC) on ultra-high-performance concrete (UHPC). The process of adding a curing ingredient to the concrete mixture to serve as a water reservoir is known as internal curing. IC is a viable technique for supplying additional water for curing cement-based material with lower water-to-binder concrete. It is distinct from externally applied curing. The water meant for internal water curing is dispersed within the concrete after it hardened and facilitated the hydration process. It was used to minimize self-desiccation and shrinkage in UHPC. Based on the reviewed literature, an exchange between mechanical characteristics and autogenous shrinkage for concrete was observed for internally cured UHPC. Even though IC affects the mechanical characteristics, after 28 days, it was possible to achieve a compressive strength of over 150 MPa. Thermal curing was found to exhibit a remarkable effect on the development of UHPC strength. Experimental findings revealed that using pre-saturated aggregates for IC improves the tensile strength of UHPC. The scanning electron microscope images revealed that the bulk of the voids within the super-absorbent polymer cavities are filled with portlandite.

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超高性能混凝土内部养护:综合综述

摘要本文综述了内养护（IC）对超高性能混凝土（UHPC）影响的研究进展。将养护成分添加到混凝土混合物中作为蓄水池的过程被称为内部养护。IC是一种可行的技术，可为粘结混凝土提供额外的水，用于以较低的水养护水泥基材料。它不同于外部应用的固化。用于内部水养护的水在混凝土硬化后分散在混凝土中，并促进水化过程。它被用于最大限度地减少UHPC中的自干燥和收缩。在综述文献的基础上，观察到内养护UHPC混凝土的力学特性和自收缩之间的交换。尽管IC会影响机械特性，但在28天后，仍有可能获得超过150的抗压强度 MPa。热固化对UHPC强度的发展表现出显著的影响。实验结果表明，使用预饱和集料进行IC可以提高UHPC的抗拉强度。扫描电子显微镜图像显示，高吸水性聚合物空腔内的大部分空隙都填充有磷铝石。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the Mechanical Behavior of Materials Materials Science-Materials Science (miscellaneous)

CiteScore

3.00

自引率

11.10%

发文量

审稿时长

30 weeks

期刊介绍： The journal focuses on the micromechanics and nanomechanics of materials, the relationship between structure and mechanical properties, material instabilities and fracture, as well as size effects and length/time scale transitions. Articles on cutting edge theory, simulations and experiments – used as tools for revealing novel material properties and designing new devices for structural, thermo-chemo-mechanical, and opto-electro-mechanical applications – are encouraged. Synthesis/processing and related traditional mechanics/materials science themes are not within the scope of JMBM. The Editorial Board also organizes topical issues on emerging areas by invitation. Topics Metals and Alloys Ceramics and Glasses Soils and Geomaterials Concrete and Cementitious Materials Polymers and Composites Wood and Paper Elastomers and Biomaterials Liquid Crystals and Suspensions Electromagnetic and Optoelectronic Materials High-energy Density Storage Materials Monument Restoration and Cultural Heritage Preservation Materials Nanomaterials Complex and Emerging Materials.