Open AccessApplication of Response Surface Methodology for Chloride Transport Properties in Nano Metaclayed-UHPC
Author(s) -
Mohd Faizal Md Jaafar,
Muhd Norhasri Muhd Sidek,
Hamidah Mohd Saman,
Khairunisa Muthusamy,
Norhaiza Ghazali,
Azmi Ibrahim
Publication year - 2021
Publication title -
construction
Language(s) - English
Resource type - Journals
ISSN - 2785-8731
DOI - 10.15282/construction.v1i2.6698
Subject(s) - durability , chloride , materials science , composite material , nano , penetration (warfare) , compressive strength , corrosion , response surface methodology , metallurgy , chemistry , mathematics , chromatography , operations research
The major concern on the deterioration of reinforced concrete structure is due to the corrosion of steel reinforcement from the aggressive environment such as chloride penetration. Ultra-high performance concrete (UHPC) is an advanced concrete material having ultra-high strength with excellent durability properties. Inclusion of nano metaclay in UHPC is expected to overcome the chloride transport properties in UHPC by providing nano filler effect. Two (2) assessments were conducted which are chloride content and chloride depth were examined. All the concrete specimens were immersed in 3% NaCl solution up to 365 days and the tests conducted were performed at 3, 7, 28, 56, 91, 182 and 365 days. Response surface method (RSM) was performed to evaluate the interaction and relationship between operating variables (compressive strength and nano metaclay content). Based on RSM analysis, inclusion of nano metaclay in UHPC have good relationship towards the chloride resistance characteristics and adequate durability performance in terms of chloride penetration resistance. The results exhibited that inclusion of 1% nano metaclay significantly and positively affect in term of chloride penetration resistance.