Geostatistics Application for Andesite Rock Strength Classification in an Effort to Meet the Quality of Construction Material Raw Materials Dudi Nasrudin Usman1, Icih Sukarsih2, Indra Karna Wijaksana1, Himawan Nuryahya1
Bandung Islamic University
Abstract
Geostatistics is a very valuable tool for making data-based decisions about natural resources, especially construction materials. The characteristics and physical properties of construction materials are important because they are considered in physical utilization, especially concrete buildings. The research conducted was to analyze rock hardness data for its utilization as a construction material referring to established standards. The methodology used is direct observation in the field, megascopic and microscopic observations. The use of this geostatistical method for observation and processing and analysis of spatial data involves indicators of rock physical properties in the form of hardness values. So it is easier to make decisions with the physical properties of rock hardness that have economic value. The results of the study showed that the geological potential of West Java has great andesite potential, especially in areas of volcanic activity. Andesite is used as a construction material. In West Java Province there are 426 IUPs, specifically for andesite commodities there are 126 IUPs (29.58%). The quality of andesite rock is generally moderate to strong, and is resistant to weathering, has a relatively low water absorption value, suitable for use as a construction raw material such as foundations, roads, and roadside stones. The use of the Geostatistical Method is to determine the distribution and zoning of good quality andesite rocks, where several identified zones have good quality, namely 42% in the Bogor Area, 21% in the Cirebon Area, 18% in the Bandung Area and Surrounding Areas, 19% are spread across several regions.
Keywords: Andesite, West Java, Construction Materials, Quality and Geostatistics.
