检索结果-南通市图书馆

Performance studies on recycled aggregate concrete with treated recycled aggregates

Waste Disposal and Sustainable Energy 2023年第4期5卷 451-459页

作者： Malathy Ramalingam jagan sivamani Karuppasamy Narayanan Faculty Department of Civil EngineeringSona College of TechnologySalemTamil NaduIndia

Excessive construction activities generate huge quantities of waste that are disposed of in nearby sites,leading to environmental *** the concrete fractions of construction wastes for their utilization as aggregates has been predominant among industrialists and researchers in recent ***,the smearance of cement mortar on the recycled aggregates affects the concrete *** treatments were developed to remove the weak cement mortar or seal the micro-pores on the adhered cement mortar of recycled *** paper investigates the comparative efficiency of acid and carbonation treatment on recycled coarse aggregate(RCA)properties and its behaviour on recycled aggregate concrete(RAC).The RCA was treated with HCl acid at 0.1 mol/L,0.5 mol/L,and 0.8 mol/L and CO_(2) at 0.1 bar,0.2 bar,and 0.4 bar and tested for their physical properties,and the concrete mixtures with treated recycled aggregates were tested for fresh and hardened *** could be observed that the properties of RAC were affected owing to the smearance of weak mortar,whereas for the concrete with carbonated(RACc)and chemically treated aggregates(RACa),the concrete properties tended to *** strength of RAC was 28.59%less than that of normal aggregate concrete(NAC),whereas the strength of RACc and RACa was enhanced by 16.44%and 9.7%compared to that of RAC at 28 *** water absorption of RAC was 47.51%more than that of NAC,whereas the water absorption of RACa and RACc was 28.67%and 33.75%lesser than ***-soaking the RCA with acids removes the adhered mortar due to its acidic *** contrast,in carbonation,the CO_(2) reacts with the Ca(OH)_(2) on the cement mortar to form CaCO_(3),filling the micro-cracks in the cement mortar on the RCA.

关键词： Recycled aggregates Chemical Carbonation Adhered mortar Recycled aggregate concrete Strength Water absorption

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Properties of Sustainable High Strength Concrete with Waste Copper Slag

引用

Journal of Wuhan University of Technology(Materials Science) 2023年第4期38卷 815-822页

作者： jagan sivamani KARUPASAMY Narayanan DHARMARAJ R THIYANESWARAN Periyasamy KARTHIKEYAN Selvarajan NAVANEETHAN Kumaravalasu Subramaniam Department of Civil Engineering Sona College of TechnologySalem636005India Department of Civil Engineering KPR Institute of Engineering and TechnologyCoimbatore641407India Kongu School of Architecture Perundurai638060India Department of Civil Engineering Kongu Engineering CollegePerundurai638060India

The present work investigates copper slag as a substitute for river sand in high-strength *** concrete mixtures were manufactured with 10%,30%,50%,70%,and 100%of copper slag to evaluate the mechanical and durability *** experimental results indicate that replacing copper slag above 50%affects the performance characteristics of the concrete due to its high angularity and lower water absorption *** strength of concrete with 50%copper slag is improved by 5.6%,whereas the strength of concrete with 100%copper slag is reduced by 2.75%at 28 ***,increased curing to 90days improves the strength of the former by 7.16%and reduces the latter by only 0.23%.The water absorption,porosity,and rapid chloride penetration of the concrete mixtures with 100%copper slag are increased by 10.44%,13.20%,and 19.56%compared to control ***-structural investigations through SEM infer higher replacement of copper results in higher void formation due to its reduced water absorption.

关键词： copper slag high strength concrete strength water absorption porosity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：