Optimizing internal curing parameters for autonomous curing of normal-strength concrete

IF 1.8 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Magazine of Concrete Research Pub Date : 2023-03-13 DOI:10.1680/jmacr.22.00254

Tesfaalem Gereziher Atsbha, S. Zhutovsky

{"title":"Optimizing internal curing parameters for autonomous curing of normal-strength concrete","authors":"Tesfaalem Gereziher Atsbha, S. Zhutovsky","doi":"10.1680/jmacr.22.00254","DOIUrl":null,"url":null,"abstract":"Autogenous curing, also known as internal curing (IC), has revolutionized the way high-performance and high-strength concrete (HPC and HSC) are cured. It has improved concrete's service life by lowering early-age cracking and enhancing its durability. However, normal-strength concrete (NSC) is still the most commonly used type of concrete in the industry, and it is typically cured using conventional methods with poor oversight. As a result, researchers are looking at ways to reproduce the positive results observed in internally cured HSC/HPC. Studies show that IC is feasible in NSC despite the higher permeability, which results in the loss of internal curing water. However, no comprehensive research has attempted to assess how the type, size, and amount of internal curing agents affect the properties of NSC. Thus, this study aims to optimize the IC parameters for the autonomous curing of NSC. The outcomes of this study support the notion that IC is possible in high w/c ratio concrete and that, compared to lightweight aggregates (LWA), superabsorbent polymers (SAP) significantly impact the durability properties of NSC. Moreover, varying the size of the IC agent (LWA) had little effect on NSC properties, and increasing the amount of IC water content considerably improved the NSC's durability properties.","PeriodicalId":18113,"journal":{"name":"Magazine of Concrete Research","volume":" ","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Magazine of Concrete Research","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1680/jmacr.22.00254","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Autogenous curing, also known as internal curing (IC), has revolutionized the way high-performance and high-strength concrete (HPC and HSC) are cured. It has improved concrete's service life by lowering early-age cracking and enhancing its durability. However, normal-strength concrete (NSC) is still the most commonly used type of concrete in the industry, and it is typically cured using conventional methods with poor oversight. As a result, researchers are looking at ways to reproduce the positive results observed in internally cured HSC/HPC. Studies show that IC is feasible in NSC despite the higher permeability, which results in the loss of internal curing water. However, no comprehensive research has attempted to assess how the type, size, and amount of internal curing agents affect the properties of NSC. Thus, this study aims to optimize the IC parameters for the autonomous curing of NSC. The outcomes of this study support the notion that IC is possible in high w/c ratio concrete and that, compared to lightweight aggregates (LWA), superabsorbent polymers (SAP) significantly impact the durability properties of NSC. Moreover, varying the size of the IC agent (LWA) had little effect on NSC properties, and increasing the amount of IC water content considerably improved the NSC's durability properties.

查看原文本刊更多论文

普通强度混凝土自主养护内部养护参数的优化

自生养护，也称为内部养护（IC），已经彻底改变了高性能和高强度混凝土（HPC和HSC）的养护方式。它通过降低早期开裂和提高耐久性来提高混凝土的使用寿命。然而，普通强度混凝土（NSC）仍然是行业中最常用的混凝土类型，通常使用常规方法进行养护，但监督不力。因此，研究人员正在寻找方法来重现在内部治愈的HSC/HPC中观察到的阳性结果。研究表明，IC在NSC中是可行的，尽管其具有较高的渗透性，这会导致内部养护水的损失。然而，没有全面的研究试图评估内部固化剂的类型、尺寸和用量如何影响NSC的性能。因此，本研究旨在优化神经干细胞自主治疗的IC参数。这项研究的结果支持了这样一种观点，即IC在高水灰比混凝土中是可能的，并且与轻质骨料（LWA）相比，超吸收性聚合物（SAP）显著影响NSC的耐久性。此外，改变IC剂（LWA）的尺寸对NSC的性能影响不大，并且增加IC含水量显著提高了NSC的耐久性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Magazine of Concrete Research 工程技术-材料科学：综合

CiteScore

4.60

自引率

11.10%

发文量

102

审稿时长

5 months

期刊介绍： For concrete and other cementitious derivatives to be developed further, we need to understand the use of alternative hydraulically active materials used in combination with plain Portland Cement, sustainability and durability issues. Both fundamental and best practice issues need to be addressed. Magazine of Concrete Research covers every aspect of concrete manufacture and behaviour from performance and evaluation of constituent materials to mix design, testing, durability, structural analysis and composite construction.