Utilizing crushed Choerospondias Axillaris seeds as a sustainable alternative to natural aggregate in concrete

IF 5.9 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Ain Shams Engineering Journal Pub Date : 2025-08-14 DOI:10.1016/j.asej.2025.103674

Suraj Sedai, Kiran Thapa, Jiwan Paudel, Tek Raj Gyawali

{"title":"Utilizing crushed Choerospondias Axillaris seeds as a sustainable alternative to natural aggregate in concrete","authors":"Suraj Sedai, Kiran Thapa, Jiwan Paudel, Tek Raj Gyawali","doi":"10.1016/j.asej.2025.103674","DOIUrl":null,"url":null,"abstract":"<div><div>The waste management of Choerospondias Axillaries Seed (CAS), originating from forests, markets, and factories, is a growing concern in Nepal. To address this, CAS was crushed and used in M20 concrete (water-to-cement ratio = 0.445 and cement: sand: coarse aggregate = 1: 1.363: 2.171) as a replacement for natural coarse aggregate (NCA) at varying proportions. The results showed a decrease in workability, density, and strengths with increasing water absorption as CAS replaced NCA. The 28-day compressive strength decreased by 4.4 %, 11.2 %, 28.4 %, 42.8 %, and 53.1 % at replacement levels of 0 %, 20 %, 40 %, 60 %, 80 %, and 100 %, respectively. The study suggests that up to 20 % CAS replacement can achieve the same concrete grade, with acceptable workability, flexural and tensile strengths, and water absorption. Higher replacement levels can be used for low-grade or non-structural concrete, contributing to CAS waste management and reducing NCA consumption, thus promoting sustainability and preventing environmental degradation.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 11","pages":"Article 103674"},"PeriodicalIF":5.9000,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ain Shams Engineering Journal","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2090447925004150","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The waste management of Choerospondias Axillaries Seed (CAS), originating from forests, markets, and factories, is a growing concern in Nepal. To address this, CAS was crushed and used in M20 concrete (water-to-cement ratio = 0.445 and cement: sand: coarse aggregate = 1: 1.363: 2.171) as a replacement for natural coarse aggregate (NCA) at varying proportions. The results showed a decrease in workability, density, and strengths with increasing water absorption as CAS replaced NCA. The 28-day compressive strength decreased by 4.4 %, 11.2 %, 28.4 %, 42.8 %, and 53.1 % at replacement levels of 0 %, 20 %, 40 %, 60 %, 80 %, and 100 %, respectively. The study suggests that up to 20 % CAS replacement can achieve the same concrete grade, with acceptable workability, flexural and tensile strengths, and water absorption. Higher replacement levels can be used for low-grade or non-structural concrete, contributing to CAS waste management and reducing NCA consumption, thus promoting sustainability and preventing environmental degradation.

查看原文本刊更多论文

利用压碎的棘球蛾种子作为混凝土中天然骨料的可持续替代品

在尼泊尔，源自森林、市场和工厂的毛螺种子（CAS）的废物管理日益受到关注。为了解决这个问题，CAS被粉碎并用于M20混凝土（水灰比= 0.445，水泥：砂：粗骨料= 1:1.363:2.171）中，作为不同比例的天然粗骨料（NCA）的替代品。结果表明，当CAS取代NCA后，随着吸水率的增加，和易性、密度和强度都有所下降。在替代水平为0%、20%、40%、60%、80%和100%时，28天抗压强度分别下降4.4%、11.2%、28.4%、42.8%和53.1%。研究表明，高达20%的CAS替代量可以达到相同的混凝土等级，具有可接受的和易性，抗弯和抗拉强度以及吸水率。更高的替代水平可以用于低等级或非结构混凝土，有助于CAS废物管理和减少NCA消耗，从而促进可持续性和防止环境退化。

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

Ain Shams Engineering Journal Engineering-General Engineering

CiteScore

10.80

自引率

13.30%

发文量

441

审稿时长

49 weeks

期刊介绍： in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.