Abstract
Buildings with lightweight concrete are currently used as a solution for mass housing construction which is relatively cheaper, although it does not provide indoor thermal comfort due to the use of this building material. Lightweight concrete building materials are able to store heat for a long time, so that at night the heat is released indoors. The combination of building materials and PCM is an efficient way to increase the storage capacity of thermal energy in building components. The purpose of this study was to determine the compressive strength of the concrete if the coarse aggregate (gravel) was replaced by part of the gravel material using the Phase Change Material of beeswax (beeswax) according to the required percentage starting from 0%, 5%, 10%, 15% and if the aggregate was fine. (Sand) is partially replaced aby using Rice husk ash with various variations starting from 0%, 5%, 10%, 15%. In addition, this utilization is a good alternative, because there will be a process of utilizing rice husk ash which was previously wasted while these items can be used or processed into additives to the concrete mixture.
Highlights
The pattern of Indonesia's energy consumption in the residential sector for heating or cooling reaches 43%, water heating 27%, lighting 3.4%, household appliances 26.6%
Research on the energy efficiency of the building sector in Indonesia has so far only focused on the use of electricity but has never questioned energy efficiency through the selection and use of building materials
The purpose of this study was to determine the compressive strength of the concrete if the coarse aggregate was replaced by part of the gravel material using the Phase Change Material of beeswax according to the required percentage starting from 0%, 5%, 10%, 15% and if the aggregate was fine. (Sand) is partially replaced by using Rice husk ash with various variations starting from 0%, 5%, 10%, 15%
Summary
The pattern of Indonesia's energy consumption in the residential sector for heating or cooling reaches 43%, water heating 27%, lighting 3.4%, household appliances 26.6%. As for the use of electrical energy, up to 50% of the total electricity demand is absorbed in the building sector, so the residential sector plays a major role in consuming electricity both for lighting, household appliances and space conditioning. Indonesia as a developing country will certainly move to improve the standard of living of its population, so the pattern of energy use for homes will be mostly used for the purposes of achieving comfort in space through the air conditioning system, lighting systems, lighting systems and water heaters. The energy consumption pattern for the commercial building sector reaches 50-60% for air conditioning systems, 30% for lighting and the rest for other machine tools [1]. Research on the energy efficiency of the building sector in Indonesia has so far only focused on the use of electricity but has never questioned energy efficiency through the selection and use of building materials
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