#TITLE_ALTERNATIVE#

• Main Author: Heru Basudewo N IM. 25094044, Henky
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/8095
• Institution: Institut Teknologi Bandung

Abstract: <br /> <br /> <br /> <br /> <br /> The development of electric energy demand in Indonesia in the early 1980 brought to PLN dealt with coal fired power plant. This development poses the problem of disposing and utilizing the fly ash, nowadays it is becoming more and more necessary to use them for productive purposes in spite of cost operation for disposing are quite expensive and require land that could be used for other purposes and would have considerable environmental benefit. Fly ash is a typical waste material of pulverized coal fired power plants, it is nonpiastic, cohesionless and very fine granular likely to be in the size of silt. Steel making industries require metal coating for preventing corrosion attack in the humid climate like in Indonesia The solid waste byproduct created by metal coating is an electroplating sludge in blue green colors contain metal compound which could be considered for productive purpose like stabilizing agent. In view of this application a laboratory experiments were carried out to study the effects of fly ash and electroplating sludge on the unconfined compressive strength of clay. As theft, ash and electroplating sludge have several metal compound whit can provide an adequate array of divalent or trivalent cation% the various di emi cal processes play an important role rather than physical process for improving soil properties The clays analyzed in the present study were obtained from Gede Bage and Cilampeuni clay formation in the Bandung plateau. In the present study fly ash was obtained soon after firing process from Suralaya thermal power plant and electroplating sludge was obtained from PINDAD. Several combinations of fly ash, electroplating sludge and Bandung clay mixture at their optimum moisture contents have been used to evaluate the effectiveness of fly ash and electroplating sludge in stabilizing the Bandung clay which is expansive. In addition to index and other physical properties, compaction, compression, chemical analysis and X-ray diffraction test were carried out to obtain necessary engineering properties. If appropriate quantities of fly ash and electroplating sludge are mixed with Bandung clay and cured for sufficient period of time the strength improved significantly than those of the natural clays. The impressive gain in strength was found when electroplating sludge mixed with Bandung clay in the moisture content higher than optimum moisture content.