The
current development of light concrete in applying non-structural elements has
many kinds, uses, and advantages. Products produced from light concrete, such
as wall panels, can also be used as a wall filler material that is often
encountered, and one of them provides an alternative in the form of low-cost
building materials. Based on Indonesian National Standard or SNI 2847-2013,
light concrete is defined as concrete containing light aggregates and
equilibrium volumetric weight between 1140 kg/
to 1840 kg/. Fly ash is one of the most commonly
used types of pozzolan, especially in concrete mixtures. Carbon nanotubes are a
type of carbon with a hollow structure and good transport properties. The
addition of these two materials can make light concrete stronger. This study
aims to determine the compressive strength, water absorption power, volumetric
weight, and optimal use of carbon nanotubes in cellular light concrete.
This
research uses quantitative research methods conducted in the laboratory. Based
on existing research, the addition of fly ash or fly ash by 15%. In addition,
the addition of carbon nanotubes has several variations in addition, namely 0%,
0.04%, 0.06%, 0.08%, 0.1%, and 0.12% of the test objects prepared. Data
retrieval is done by creating and preparing a 5x5x5 
cube-shaped test object with a lifespan of 3,
7, 14, 21, and 28 days. The results of this study in the addition of fly ash and
carbon nanotubes produced the highest cellular light concrete Compressive
Strength at a variation of 0.10% by 9.71 MPa with a weight of 1.61 gr/, while at a variation of 0.0%
obtained a compressive strength of 0.75 MPa with a volume weight of 0.90 gr/, with test objects at the age of 28
days.
Keywords: Cellular
Lightweight Concrete, Fly Ash, Carbon Nanotube