Work

Investigating the performance and durability of high mechanical milling nano pulverised refused SCMs

Year: 2024

Type: article

Abstract: This study investigated the performance and durability of high-mechanical-milling nano-pulverized industrial reject supplementary cementitious materials (SCMs). The research utilized industrial reject (IR-1), specifically Ground Blast Furnace Slag (GBFS), as the SCM. As-received IR-1 GBFS was milled for 90 minutes to achieve nano-sized particles, and its properties were compared with the un-milled, or before-milled (BM) material. Three pozzolanicity tests were conducted to compare the before milled (BM) and after-milled (AM) materials. Additionally, M30 grade concrete mixes were developed with cement partially replaced by 30 %, 35 %, and 40 % using both BM and AM IR-1 materials. Mechanical performance, including compressive strength , flexural strength , and split tensile strength , along with durability tests such as water absorption, sorptivity , and rapid chloride penetration , were conducted for the BM and AM IR-1 blended concretes . The results showed that AM IR-1 blended concrete achieved the required design strength at a 30 % cement replacement level. Furthermore, the AM IR-1 blended concrete exhibited 40 % higher compressive strength , 39 % higher flexural strength, and 29 % higher split tensile strength compared to the control concrete. Durability testing also revealed significant improvements in AM IR-1 blended concrete, with reductions of 19.65 % in water absorption, 24.71 % in sorptivity, and 38 % in chloride penetration. This study demonstrates that industrial waste, such as GBFS, can be effectively utilized as a sustainable alternative to traditional materials in the construction industry. Additionally, nano-pulverization treatment significantly enhances the pozzolanicity and overall performance of materials that may not meet the physicochemical standards specified in IS 3812-(Part 1):2017 and ASTM C618–19.

Source: Case Studies in Construction Materials

DOI: 10.1016/j.cscm.2024.e03818

Authors: Sandeep Tembhurkar, Mangesh Madurwar, S.P. Raut, Jayant Giri, Mohammed Rafi Shaik

Institutions: Visvesvaraya National Institute of Technology, Yeshwantrao Chavan College of Engineering, Lovely Professional University, Saveetha University, King Saud University

Language: English

Topic: Concrete and Cement Materials Research

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Responsible consumption and production, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,110