Open AccessUtilization of By Product Kappaphycus alvarezii as Earthquake Resistant Material Lightweight Concrete
Author(s) -
A A Musthofa,
Muhammad Zulfikar Alfian Bahtiar,
Farizha Ibrahim,
Annur Ahadi Abdillah
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/441/1/012028
Subject(s) - kappaphycus alvarezii , flexural strength , compressive strength , absorption of water , environmental science , cement , cellulose , pulp and paper industry , materials science , waste management , composite material , engineering , algae , ecology , chemical engineering , biology
Increasing seaweed production in Indonesia is the result of industrial demand that continues to soar, especially Kappaphycus alvarezii , and has an impact on the accumulation of seaweed processing waste. The use of waste as a substitute for sand in making lightweight concrete can be done because there is a cellulose content that can make bonds between materials which can be used as earthquake-resistant building materials. The purpose of this study was to determine the industrial waste treatment of K. alvarezii can be used as a lightweight concrete for earthquake resistant building materials. This study uses a complete random range with six treatments and four replications by testing compressive strength, flexural strength, and water absorption. The best treatment is a substitution with a 60% waste concentration with the results of the compressive strength test of 1.15 MPa, the flexural strength of 5.37 MPa, and a water absorption capacity of 62.25%. The suggestion from this research is to do mass production with the substitution formulation of carrageenan waste by 60%.