http://localhost:80/xmlui/handle/123456789/572 2026-04-16T05:42:47Z 2026-04-16T05:42:47Z Husin, Albert Eddy http://localhost:80/xmlui/handle/123456789/930 2019-11-06T04:21:11Z 2019-09-20T00:00:00Z

Title: PERFORMANCE IMPROVEMENT OF DIAPHRAGM WALL AT HIGH RISE BUILDING BY VALUE ENGINEERING UTILIZATION Authors: Husin, Albert Eddy Abstract: Diaphragm Wall (D-Wall) is a retaining wall which is also used for basement floor walls which are part of a lower structure which contributes 8% of the total cost of high-rise building construction is a job that has a high enough level of difficulty so that it has the potential to experience cost overrun. According to World Bank data that 63% of 1,778 projects experienced Over-run Cost Value Engineering (VE) used to produce more efficient and effective costs and time so as to increase profit and revenue for contractors and owners. Statistical analysis uses the Relative Importance Index (RII) method to get the ranking of the 10 most influential factors on cost savings including: Location, Picture completeness and specification, Cost efficiency, Improving function value, Better project value, Mature planning, Hole ground collapse drill, Low productivity tools, Cost Model and price fluctuations. From the results of the study Analysis of the case study obtained cost optimization of 18.83%.

2019-09-20T00:00:00Z Angulo-Sogamoso, Karen V. Gil-Sierra, Danilo G. Espitia-Cuchango, Helbert E. http://localhost:80/xmlui/handle/123456789/929 2019-11-05T11:01:01Z 2019-09-20T00:00:00Z

Title: A NOVEL ALGORITHM BASED ON CELLULAR AUTOMATA TO ELIMINATE NOISE IN DIGITAL IMAGES Authors: Angulo-Sogamoso, Karen V.; Gil-Sierra, Danilo G.; Espitia-Cuchango, Helbert E. Abstract: A cellular automaton is a processing system that makes decisions based on the information of its neighbors. Implementing a cellular automaton can have a direct relationship with the form of digital images representation, whereby it is possible to perform image processing applications using this concept. Due to this, this document presents the proposal of an algorithm based on cellular automata for the elimination of impulsive noise in digital images, which makes use of the adaptation mechanism to adjust to the environment conditions (in this case, the image) at the moment that the information acquired by the cellular automaton is insufficient to make a decision about the pixel under evaluation. In addition, thanks to the consideration of related works, an evaluation method can be established to observe the performance of the proposed algorithm against two algorithms presented by other authors. Tests are carried out with four images that have different characteristics. In evaluating the images exposed to different noise levels, the results obtained show that the proposed algorithm presents better according to the Structural Similarity Index (SSIM), since at noise levels between 10% and 90% improvements in noise reduction range between 15% and 68%.

2019-09-20T00:00:00Z Shadykanov, Kalys http://localhost:80/xmlui/handle/123456789/927 2019-11-05T10:56:58Z 2019-09-20T00:00:00Z

Title: IMPROVING THE EFFICIENCY OF MANUFACTURING FINE-GRAINED CONCRETE THROUGH THE USE OF MAN-MADE SANDS AND COMPOSITE BINDERS Authors: Shadykanov, Kalys Abstract: In this paper, an attempt has been made to substantiate the need for utilization of man-made sands and sands of mechanical origin obtained from local rocks as a result of mining, processing into crushed stone and sawn materials. The use of waste products contributes to the expansion of the raw materials base of the construction industry, increase in the number of composite binders when used as a filler, large-scale propagation of fine-grained concrete for various products along with minimization of material and energy costs, expanding the practice of using stone-crushing, stone-sawing products and managing new technologies for environmental conservation. The decision to utilize man-made waste materials (sands) of mechanical origin is particularly important for large-scale expansion of the production of fine-grained concrete for a region where no metal (reinforcement steel) is manufactured.

2019-09-20T00:00:00Z B., Arifin Samang, Lawalenna Harianto, Tri Muhiddin, Achmad Bakri http://localhost:80/xmlui/handle/123456789/926 2019-11-05T10:54:51Z 2019-09-20T00:00:00Z

Title: EXPERIMENTAL STUDY OF DEFORMATION AND PORE WATER PRESSURE FOR EMBANKMENT ON SOFT SOIL USING RAPID IMPACT COMPACTION Authors: B., Arifin; Samang, Lawalenna; Harianto, Tri; Muhiddin, Achmad Bakri Abstract: This study was conducted to analyze the deformation behavior and increases of pore water pressure on an embankment construction on the clay soil layer which is compacted using the Rapid Impact Compaction (RIC) Method. In this study, an equipment model was used that can simulate the RIC method which was electro-mechanically controlled at frequency of 30-40 blows per minute. The compaction test mold has a diameter of 80 cm and height of 120 cm, tested clay layer has a thickness of 80 cm and the sand-and-gravel embankment has a thickness of 30 cm. The clay layer was attached with pore pressure cell and earth pressure cell. An ultra-sonic sensor and a dial gauge were put on the surface. The compaction process with RIC was carried out up to 300 blows using a 45kg impact mass, falling height of 15 cm, impact base diameter(B) of 30 cm. The results showed the achievement of 90% of maximum vertical deformation on the impact foot occurred at 175 blows and heaving surfaces occurred at a distance of 0.80B from the center of the impact base, while at the 300 blows, the heaving surfaces distance was 0.90B. The analysis showed the generation of excess pore water pressure following the phenomenon of undrained conditions in the cyclic dynamic loading, where there was a very fast increases of pore water pressure at the 55 first of blows of the initial stage of compaction and then the increase rate reduced until reaching the constant line after the 175 blows.

2019-09-20T00:00:00Z