Effect of Maximum Aggregate Size and Powder Content on the Properties of Self-compacting Recycled Aggregate Concrete

IF 1.4 4区工程技术 Q3 ENGINEERING, CIVIL

Periodica Polytechnica-Civil Engineering Pub Date : 2023-06-02 DOI:10.3311/ppci.20407

N. Kim, Jeonghyun Kim

引用次数: 0

Abstract

The utilization of recycled aggregates and various industrial by-products is considered a sustainable strategy in the concrete industry. In this study, the effect of the maximum size of recycled coarse aggregate and the cementitious binder content on fresh and hardened properties of self-compacting concrete was investigated. Self-compacting concretes with maximum aggregate sizes of 9.5 mm, 12.5 mm, and 19 mm were prepared at water-to-binder ratios of 0.39, 0.42, and 0.45, respectively. For all mixtures, 100% recycled aggregate was used as coarse aggregate and 60% of cement was replaced by industrial by-products, i.e., fly ash and ground granulated blast furnace slag. The tests included slump flow, air content, hardened density, compressive strength, elastic modulus, and splitting tensile strength. The results showed that the increase in maximum aggregate size and binder content tended to improve both fresh and hardened properties of self-compacting concrete.

查看原文本刊更多论文

最大骨料粒径和掺量对自密实再生骨料混凝土性能的影响

利用再生骨料和各种工业副产品被认为是混凝土工业的可持续发展战略。本文研究了再生粗骨料的最大粒径和胶凝粘结剂掺量对自密实混凝土新拌性能和硬化性能的影响。自密实混凝土的最大骨料尺寸分别为9.5 mm、12.5 mm和19 mm，水胶比分别为0.39、0.42和0.45。所有混合料均采用100%再生骨料作为粗骨料，60%的水泥由工业副产物，即粉煤灰和磨粒的高炉矿渣替代。试验包括坍落度、空气含量、硬化密度、抗压强度、弹性模量和劈裂抗拉强度。结果表明，增大最大骨料粒径和粘结剂掺量有利于改善自密实混凝土的新鲜性能和硬化性能。

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

Periodica Polytechnica-Civil Engineering 工程技术-工程：土木

CiteScore

3.40

自引率

16.70%

发文量

审稿时长

12 months

期刊介绍： Periodica Polytechnica Civil Engineering is a peer reviewed scientific journal published by the Faculty of Civil Engineering of the Budapest University of Technology and Economics. It was founded in 1957. Publication frequency: quarterly. Periodica Polytechnica Civil Engineering publishes both research and application oriented papers, in the area of civil engineering. The main scope of the journal is to publish original research articles in the wide field of civil engineering, including geodesy and surveying, construction materials and engineering geology, photogrammetry and geoinformatics, geotechnics, structural engineering, architectural engineering, structural mechanics, highway and railway engineering, hydraulic and water resources engineering, sanitary and environmental engineering, engineering optimisation and history of civil engineering. The journal is abstracted by several international databases, see the main page.