文章基本信息

标题：Mechanical Properties of Tin Slag Mortar
本地全文：下载
作者：Nathaniel Olukotun ; Abdul Rahman Mohd Sam ; Nor Hassana Abdul Shukor Lim 等
期刊名称：Recycling
电子版ISSN：2313-4321
出版年度：2021
卷号：6
期号：2
页码：42
DOI：10.3390/recycling6020042
出版社：MDPI Publishing
摘要：The increased demand for cement mortar due to rapid infrastructural growth and development has led to an alarming depletion of fine aggregate. This has prompted the need for a more sustainable material as a total/partial replacement for natural fine aggregate. This study proposes the use of tin slag (TS) as a replacement for fine aggregate in concrete to bridge this sustainability gap. TS was used to replace fine aggregate at replacement levels of 0%, 25%, 50%, 75%, and 100% in cement mortar. Fresh and hardened properties of TS mortar were obtained. Flow tests showed that, as the TS quantity and the w/c ratio increased, the mortar flow increased. Similarly, the compressive strength increased as the TS replacement increased up to 50% replacement, after which a decline in strength was observed. However, with the TS replacement of fine aggregate up to 100%, a compressive strength of 6% above control was attained. The morphological features confirm that specimens with TS had a denser microstructure because of its shape characteristics (elongated, irregular, and rough), and, thus, plugged holes better than the control mortar. The natural sand’s contribution to strength was a result of better aggregate hardness as compared to TS. Hence, TS can be used as alternative for fine aggregate in sustainable construction.
关键词：tin slag; mortar; compressive strength; fine aggregate; rough surfaced; elongated tin slag ; mortar ; compressive strength ; fine aggregate ; rough surfaced ; elongated