Experimental Study on Special Testing Strength Curve for Compressive Strength Evaluation by Rebound Method

This article aims to improve the accuracy and predictability of rebound method in compressive strength evaluation of concrete members of the Yanchong Expressway, which is an important traffic guarantee project for the 2022 Winter Olympics Games in Zhangjiakou city, Hebei Province, China. For this pu...

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Autores principales:	Wei Yuan, Renfeng Yang, Jianyou Yu, Xiujie Han
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/ae2a030a019847e4a06d141203f5c02b
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spelling	oai:doaj.org-article:ae2a030a019847e4a06d141203f5c02b2021-11-15T01:19:02ZExperimental Study on Special Testing Strength Curve for Compressive Strength Evaluation by Rebound Method1687-844210.1155/2021/8413010https://doaj.org/article/ae2a030a019847e4a06d141203f5c02b2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/8413010https://doaj.org/toc/1687-8442This article aims to improve the accuracy and predictability of rebound method in compressive strength evaluation of concrete members of the Yanchong Expressway, which is an important traffic guarantee project for the 2022 Winter Olympics Games in Zhangjiakou city, Hebei Province, China. For this purpose, concrete specimens were prepared by the mixing ratios of C35, C40, and C50. First of all, the paper investigated the effects of curing age, types, and dosage of mineral admixtures (fly ash and slag) on concrete rebound number and compressive strength. Then, the special testing strength curves of 7 d and 90 d curing age were proposed. The results showed that the average relative errors of the special testing strength curves were reduced by 35.99% and 20.26% respectively, compared with the national testing strength curve. Fly ash and slag were beneficial to the growth of concrete rebound numbers but cannot contribute to the growth of concrete compressive strength (except for fly ash single-mixed with 15% dosage). The present results can provide a significant reference for the compressive strength evaluation and later maintenance of concrete members of the Yanchong Expressway or other projects with tight construction period in this area.Wei YuanRenfeng YangJianyou YuXiujie HanHindawi LimitedarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ENAdvances in Materials Science and Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Wei Yuan Renfeng Yang Jianyou Yu Xiujie Han Experimental Study on Special Testing Strength Curve for Compressive Strength Evaluation by Rebound Method
description	This article aims to improve the accuracy and predictability of rebound method in compressive strength evaluation of concrete members of the Yanchong Expressway, which is an important traffic guarantee project for the 2022 Winter Olympics Games in Zhangjiakou city, Hebei Province, China. For this purpose, concrete specimens were prepared by the mixing ratios of C35, C40, and C50. First of all, the paper investigated the effects of curing age, types, and dosage of mineral admixtures (fly ash and slag) on concrete rebound number and compressive strength. Then, the special testing strength curves of 7 d and 90 d curing age were proposed. The results showed that the average relative errors of the special testing strength curves were reduced by 35.99% and 20.26% respectively, compared with the national testing strength curve. Fly ash and slag were beneficial to the growth of concrete rebound numbers but cannot contribute to the growth of concrete compressive strength (except for fly ash single-mixed with 15% dosage). The present results can provide a significant reference for the compressive strength evaluation and later maintenance of concrete members of the Yanchong Expressway or other projects with tight construction period in this area.
format	article
author	Wei Yuan Renfeng Yang Jianyou Yu Xiujie Han
author_facet	Wei Yuan Renfeng Yang Jianyou Yu Xiujie Han
author_sort	Wei Yuan
title	Experimental Study on Special Testing Strength Curve for Compressive Strength Evaluation by Rebound Method
title_short	Experimental Study on Special Testing Strength Curve for Compressive Strength Evaluation by Rebound Method
title_full	Experimental Study on Special Testing Strength Curve for Compressive Strength Evaluation by Rebound Method
title_fullStr	Experimental Study on Special Testing Strength Curve for Compressive Strength Evaluation by Rebound Method
title_full_unstemmed	Experimental Study on Special Testing Strength Curve for Compressive Strength Evaluation by Rebound Method
title_sort	experimental study on special testing strength curve for compressive strength evaluation by rebound method
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/ae2a030a019847e4a06d141203f5c02b
work_keys_str_mv	AT weiyuan experimentalstudyonspecialtestingstrengthcurveforcompressivestrengthevaluationbyreboundmethod AT renfengyang experimentalstudyonspecialtestingstrengthcurveforcompressivestrengthevaluationbyreboundmethod AT jianyouyu experimentalstudyonspecialtestingstrengthcurveforcompressivestrengthevaluationbyreboundmethod AT xiujiehan experimentalstudyonspecialtestingstrengthcurveforcompressivestrengthevaluationbyreboundmethod
_version_	1718429003179622400

Experimental Study on Special Testing Strength Curve for Compressive Strength Evaluation by Rebound Method

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