bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study of Laston BC durability and permeability using coconut shell addition materials
Authors: Tandibua J , Rachman R , Tanijaya J 
Published: February 2020

Abstract
Durability is the ability of asphalt concrete to accept repetition of traffic loads, friction, and weather and climate wear, while permeability is the ability of pavement surfaces to hold water seepage into pavement. Besides, the pore volume in the mixture is one of the most important AC-WC characteristics which are related to the level of water impermeability in the pavement layers. The purposes of this study is to investigates the effect of adding coconut fibers by 0%, 0.5%, 1%, 1.5% and 2% on durability and permeability the surface layer of Laston BC. The results obtained are the stability of the asphalt mixture in accepting the load without changing the plastic shape and following the trend of the 2nd order polynomial line. VIM values tend to rise then decrease until 48 hours immersion. It is found that the use of coconut fibers improved the impermeability properties of the surface layer of Laston BC. The value of mixed flow is influenced by the addition of coconut fibers, where if the fibers increase to 1%, then the flow will decrease. The durability value due to the addition of 1% and 1.5% coconut fibers can only be tolerated at the submergence limit of Laston BC for 30 hours while the addition of coconut fibers from 0% to 2% Laston BC can only submerged for 12 hours. The permeability values of the mixture decreases by 0.51 cm/sec for each addition of 0.5% coconut fibers.
The potential utilization of rice straw ash as cement replacement in mortar material
Authors: Mahmuda A F , Tjaronge M W , Amiruddin A A 
Published: February 2020

Abstract
This paper explored the suitability of rice straw ash, cement and water to produce mortar. The purpose of this experimental study was to investigate the possibility of using rice straw ash in mortar mixes as cement replacement to reduce the environmental effects of cement manufacture. For this purpose the mechanical properties of mortar mixes were compared with control samples. This study focused on the parameters of compressive strength. The rice straw ash used in this study was in the form of granules of about finer than 0.075 mm diameter which would replace (by weight of cement) a portion of the binder of an equal size (0.075 mm). In this investigation, four different percentages of cement replacement were used and air curing has been applied. Based on the result, air curing condition showed that the hardener mortar can be produced and exhibited the decreasing of compressive strength of mortar from 100% cement to 70% cement.
Flexural toughness of concrete with aggregate substitution (steel fiber, crumb rubber and tire chips)
Authors: Irmawaty R , Parung H , Asad Abdurrahman M , Nur Qalbi I 
Published: February 2020

Abstract
Concrete is a construction material that has been used widely in various constructions. For constructions located in seismic areas, require a material that behaves ductile during an earthquake. To obtain ductile concrete behavior, it can be substituted materials such as steel fiber and waste rubber tires. This study aims to determine the flexural toughness of concrete with steel fiber and waste rubber tires substitution. Specimens with dimensions of 100 x 100 x 400 mm with the substitution of 0%, 2.5%, 5%, and 7.5% of Dramix Steel Fiber; 10%, 20%, and 30% of crumb rubber and tire chips. The greater amount of steel fibers in the concrete, the greater value of flexural toughness. The substitution of 7.5% steel fiber, increasing the value of flexural toughness three times than the control specimens. While the number of crumb rubber and tire chips are variations, giving a value of varying flexural toughness. Flexural toughness achieved optimum value for substitution of 10% crumb rubber, where the energy absorption is 6386.225 Nmm.
Characteristics study of buton granular asphalt as filling material of column
Authors: Erdawaty  , Samang L , Muhiddin A B , Arsyad A 
Published: February 2020

Abstract
Granular Asbuton is a natural material that occurred millions of years ago. Asbuton is a huge natural asphalt reserve. The bitumen content of Asbuton is located in an inter-mineral cavity that is difficult to remove. If the layer is dug and then obtained Asbuton chunks, the Asbuton remains a unit between the bitumen and the mineral granules, even if it is crushed to a small size, the bitumen and minerals remain united. The proportion of bitumen and minerals in granular Asbuton has basic properties, such as grain size distribution, ability to drain water, compression properties when compressed, shear strength, carrying capacity, and innovation in reducing soil deformation and decline. This study aims to examine the characteristics of physical and mechanical properties, determine the amount of bearing capacity and, evaluate the deformation pattern of asphalt granular column foundation systems. Testing uses SNI and ASTM standards. Based on the results of testing the characteristics of Granular Asbuton obtained the value of qu max = 0.131 kg / cm3, in the conditions of the optimum water content of Proctor. The value of California Bearing Ratio (CBR-Unsoaked) was 1.79%. So from the results obtained, that the use of Granular Asbuton greatly affects the stability of the soil that will be used as the construction material because of this material functions as a binding material from other materials and can be given other activating materials that can increase the bearing capacity.
Earthquake lateral force analysis of reactor building, experimental power reactor
Authors: Iswanto E R , Suntoko H , Fakhruddin  
Published: February 2020

Abstract
Indonesia is considering to construct its first experimental power reactor. Similar to other conventional nuclear power plants, this type of reactor is designed and built to withstand external hazards such as an earthquake. The seismic resistance design standard for building (SNI 03-1726-2012) as basic guidance should be implemented and used for earthquake-resistant building design. In this paper, a reactor building is considered for earthquake lateral force analysis to determine the design base shear force. In general, this analysis performed statically and dynamically. For static analysis, the equivalent lateral force method were used, while for dynamic analysis, the response spectrum method is used. The results of this study have shown that the value of displacement by using static analysis is more significant than the value of displacement by using dynamic analysis. It can be concluded that although the dynamic analysis is more accurate, the static analysis would lead to a more conservative result.
Effect steel reinforcement ratio on the behavior of RC beam without concrete at tension zone using truss-system reinforcement
Authors: Amir A , Djamaluddin R , Irmawati R , Amiruddin A A 
Published: February 2020

Abstract
Massive exploration of the natural materials for producing concretes affect to the environment condition and global warming that may cause natural disasters. Therefore the using of the concrete materials should be as efficient as possible. According to its natural behavior of the concrete material, it is strong in compression and weak in tension. Therefore the contribution of the tensile stresses of the concrete to the flexural capacity of the beams is neglected. However, removing concrete on the tension zone affects to the decreasing of flexural capacity. Based on the previous studies, beam without concrete at the tension zone using truss-system reinforcement causes the tension crack near the supports. This crack might because decreasing the flexural capacity of the beam. One of the solutions to solve this problem is by strengthening the beams using steel reinforcements. Therefore, this study aims to investigate the effect of steel reinforcement near the supports on the behavior of beam without concrete at the tension zone using truss-system reinforcement. The parameter of this study was the length of the additional reinforcement near the support. It was varied into 40D, 60D and 80D, where D is the diameter of longitudinal reinforcement. The results indicated that the tensile cracks near the support could be avoided by adding the longitudinal reinforcement. Finally, the flexural capacity of RC beams without concrete at the tension zone can be increased.
Experimental evaluation on early age temperature variation of spill way containing Portland composite cement
Authors: Anshar  , Tjaronge M W , Djamaluddin R , Amiruddin A A 
Published: February 2020

Abstract
In recent decades blended cement consists of waste such as fly ash that has been developed by several national cement factories. One of the blended cement is Portland composite cement (PCC). Nowadays, in Indonesia most of the construction works use PCC. Among the construction works is a spillway of a dam which is categorized as a mass concrete construction. One of the important factors is the early-age temperature variation of mass concrete after pouring. This paper presents the investigation work on the early-age temperature variation of mass concrete made with PCC.
Failure mode of truss system concrete beams strengthened with tensile reinforcement
Authors: Amir A , Djamaluddin R , Irmawaty R , Amiruddin A A , Fakhruddin  
Published: February 2020

Abstract
Cracks usually precede beams failures. Cracks occurred due to the applied load exceeds the capacity of the cross-section in carrying the load. The use of a diagonal reinforcement or truss system can increase the flexural capacity of the beams. The previous research of using truss system reinforcement in the beam without concrete in the tension zone causes a decrease in flexural capacity due to the cracks in the area near the support. Therefore, it is necessary to add tensile reinforcement in the zone. This study uses a truss reinforced concrete beam specimen with dimensions of 15 cm x 20 m x 330 cm. There are four variations of the specimens, namely Normal Beams (BN) as control beam, BTRP 40D, BTRP 60D, and BTRP 80D. The flexural test is carried out by monotonic static loading. The results showed that the flexural capacity of BTRP 40D, BTRP 60D, and BTRP 80D increased due to the addition of tensile reinforcement in the support zone. Moreover, the failure mode of BTRP 60D and BTRP 80D are under reinforced and cracking does not occur in the support zone. Meanwhile, the BTRP 40D beam shows wide cracks in the support zone.
Mechanical properties of concrete using annealed wire fibers
Authors: Kandou C , Parung H , Djamaluddin R , Amiruddin A A 
Published: February 2020

Abstract
This study discusses the mechanical properties of concrete using annealed wire fiber which includes compressive strength, splitting tensile strength and flexural strength. The composition of the fiber used is 0.75% of the volume of concrete with a diameter of 0.8 mm fiber and the length of the fiber varied 36 mm, 48 mm and 60 mm or aspect ratio L/d of 45, 60 and 75. Test specimens used in this study are cylinders measuring 100 mm x 200 mm as many as 24 pieces and beam measuring 100 mm x 100 mm x 400 mm as many as 12 pieces. The test was performed after 28 days of concrete with the UTM tool using ASTM C-39, C-496 and C-78 standard for compressive strength test, splitting tensile strength test and flexural strength test. The result of this research shows that there is an increase of mechanical properties of concrete for compressive strength of 3.75% to 33.56%, a tensile strength of 3.35% to 32.62% and flexural strength of 9.94% to 42.14%. For maximum compressive strength for 48 mm fiber length while tensile strength and maximum flexural strength for 60 mm fiber length.
The effect of clamshells partial substitution of coarse aggregates on the mechanical properties of shellfish concrete (Berang)
Authors: Ngii E , Mustika W , Sukri A S , Balaka R , Sriyani R , Welendo L 
Published: February 2020

Abstract
This study analyzed the effect of blood clamshell substitution (Anadara granosa) on the mechanical properties of concrete, namely compressive strength and flexural strength, using clamshell material originating from the Bungkutoko island region, Abeli District and Toronipa coastal area Soropia District, Konawe Regency, Southeast Sulawesi Province. In this study, the concrete was made using blood clamshell (Anadara granosa) waste as a substitute for coarse aggregates. As a control, normal concrete was made using natural materials, namely the Moramo split and Pohara sand. The results show that partial substitution of coarse aggregates using blood clamshell concentrations of 15%, 25%, and 50% reduced the compressive strength of concrete by 11.00%, 16.20%, and 30.62% when compared to the control, respectively. Meanwhile, the respective concrete bending strength also decreased by 7.33%, 13.83%, and 32.53%. The compressive strength testing of 28 days-concrete with the shellfish compositions of 15% and 25% showed the values of 25.35 MPa and 23.87 MPa, respectively, which can be categorized as a medium-quality concrete (structural concrete). Meanwhile, the 50% shell composition had a compressive strength of 19.895 MPa, which can be categorized as a low-quality concrete (non-structural concrete).
The processing, properties and optimum mix of fly ash based - self compacting geopolymer concrete
Authors: Sondakh C , Gumalang S 
Published: February 2020

Abstract
The development of concrete technology toward environmentally friendly concrete has become increasingly interest area. The production of Portland cement has a significant impact on greenhouse emissions. The fact triggers the research and the development of eco-friendly concrete, one of which is geopolymer concrete. The implementation of concrete casting sometimes faces the construction that requires the casting process without vibration. It is then when the self-compacting concrete technology was developed. Concerning the two main issues of eco-friendly self-compacting concrete mention above, fly ash based-self compacting Geopolymer concrete has become a research study and develops in the last decades. This paper identifies the process, properties, an optimum mix of fly ash-based self-compacting geopolymer concrete. The properties in this research are the workability of fresh concrete and compressive strength at 7 days. Compressive strength is reported with several NaOH molarities, Alkaline to fly ash ratio, curing time, Curing temperature, Superplasticizer, and Extra Water. Examination of the workability is done with a slump flow test, V-Funnel test, and L-Shape box test. The result shows the optimum mix of fly ash based self-compacting geopolymer concrete.
Wave parameter sensitivity in structural dependent reliability of jack-up
Authors: Idris A , Harahap I S H , Ali M O A 
Published: February 2020

Abstract
The response treatment of structural systems subject to stochastic loading requires the mathematical modeling of the input load, propagation such as input through the systems, and the treatment of uncertainty inherent in the output using probabilistic methods. For jack-up structures, the input load from the wave is modeled using the significant wave height and wave period which are statistical averages obtained from long term studies. The variability in the determination of these wave parameters leads to further uncertainty in the response output. This study, therefore, investigated the sensitivity of these wave parameters to the time-dependent reliability of jack-up. The wave was modeled using Karhunen-Loeve representation, and the propagation of uncertainty was performed on a simplified jack-up model using Duhamel convolution integral. The response analysis was performed using VanMarckes time-dependent solution method. The results of jack-up survival probability obtained for different failure criteria in deck displacement show that the probability is more sensitive to the wave period than the wave significant height.
Geotechnical profiles of expansive soil hazard for road infrastructure: Case study of Takalar-Jeneponto provincial road corridor
Authors: Hamid W , Samang L , Harianto T , Djamaluddin A R , Arsyad A 
Published: February 2020

Abstract
This paper presents a developed geotechnical profiles which can be utlized to map expansive soil hazard for road infrastructure. The geotechnical profiles are a fundamental part of newly framework of establishing expansive soil hazard mapping which comprise of digital elevation model of area along road corridor, geological maps and geotechnical database consisting of measured in-situ and laboratory tests data, and predicted active zone by using rainfall and potential evapotranspiration data. The geotechnical profiles in the study area suggested that clay layer dominates soil formation in the area which is found to be very expansive. The thickenss of the clay layer varies due to geological structure where it is shallow in the anticline structure and deep in the sycline structure. Active zone is difficult to predict since the measurement of groundwater table is not time lapse measurement. Therefore, future study would investigate the use of SMOS and SMAP satellite platforms, and differential SAR inferometry would enhance prediction of spatial distribution of active zone of expansive soil.
Load deformation behavior of used tires foundation with varied Filler Gradation
Authors: Meti  , Samang L , Djamaluddin A R , Muhiddin A B 
Published: February 2020

Abstract
In this study, waste tire is used as foundation material. Load deformation behavior was examined with varied aggregate filler gradation. The types of gradation used are: (a) 1”<(15%)<1,5”,¾”<(25%)<1”,¾<(60%)<no.4;(b)¾”<(50%)<1”, no.4<(50%)<3/4”; (c) ¾”<(100%)<1”, and (d) natural gravel 1”<(34,66%)<1,5”, ¾”<(65,34%)<1”, gradation as found in BiliBili river. Tires waste used in this study was R.16 which had been modified. Before conducting field tests, abrasion and specific gravity values of each aggregate were obtained. With applying load of20 kN, the vertical center deformationof gradation(a) was 6 mm, gradation(b) was 6mm, gradation(c) was 9 mm, and gradation (d) was 3 mm. While horizontal side deformationgradation(a) was 19,3 mm, gradation(b) was 48 mm, gradation(c) was18,8 mm, and gradation (d) was 19,2 mm.
The influence of railway development on the indonesian national economy: an input-output approach
Authors: Dwiatmoko H , Hidayat A K , Supriyatno D , Mudjanarko S W , Ramli M I 
Published: February 2020

Abstract
This paper aims to investigate the effect of railway development on the Indonesia national economy with Input-Output analysis. The data used in this study are Input-Output data from 2000 to 2010. Input-Output data analysis generates contribution, value added, intermediate input, final input, linkage and multiple impacts of a railway to other modes of transportation and national economy. The result of Input-Output data analysis concludes that the railway has forward and backward linkage to various sub-sectors, therefore it can become a superior sub-sector to increase national economic growth. The research results find out that if there is a development or investment in the railway subsector of IDR. 1 billion, this, will, therefore, give impact to: (a) the amount of economic output will increase into IDR 1.633767 billion; (b) the income of the society members will become IDR. 362,507 million; (c) will upgrade the employment opportunities into 9.556 people. Accordingly, there is a need to modify the government budget (APBN) that will focus primarily on developing railway transportation, both in goods and passenger vehicles.
The relationship of volume and headway on heterogen traffic conditions in Makassar City
Authors: Halim H , Adisasmita S A , Ramli M I , Aly S H 
Published: February 2020

Abstract
The purpose of this study was to examine the relationship between vehicle distance (gap) formed by the vehicle volume. For this reason, in this study, there were 16 (sixteen) roads that were used as objects of research. To get the values from the gap variable, the VISSIM software is used in the data processing. In the use of this software calibration and validation are done by trial and error to produce simulation results that can replicate the actual traffic conditions. The results of this study indicate that statistically from the coefficient of determination and F test conducted concluded that there is a significant relationship between vehicle volume and gap.
Traffic noise level handling on A P Pettarani road towards elevated toll road construction
Authors: Azizah N , Hustim M , Pasra M 
Published: February 2020

Abstract
The construction of the elevated toll road is part of the transportation network system, in addition to managing the traffic system in the area to be more integrated, the facility is also used to deal with congestion that often occurs, as well as the construction plan of elevated toll on Pettarani road is expected to reduce the level of congestion that occurs. Based on previous studies, the prediction of noise levels on AP. Pettarani roads when the elevated toll road is operating with a shift estimated of 25% of the vehicle’s volume to the elevated toll road at 79.58 dB. Therefore, we need a way to handle the noise level on the AP Pettarani road if the elevated toll road is operating. Traffic load analysis is performed using the V-S-D (volume, speed and density) model analysis. The V-S-D model analysis consists of 3 models namely the Greenshield Model, the Greenberg Model, and the Underwood Model. The results of the V-S-D model analysis obtained are the Underwood Model at each point of the scenario so that it is used to calculate the average speed on the road segment according to the traffic volume. Then the results of the analysis and statistical tests through several variations of the simulation have obtained the best noise level handling by using traffic loading on the AP Pettarani Road through 50% motorcycle switch to the BRT (Bus Rapid Transyt) and can reduce the noise level by 3.05 dB.
An experimental study of clay soils for preliminary data for scour model in open channels
Authors: Latif A A , Pallu M S , Maricar F , Hatta M P 
Published: February 2020

Abstract
Measuring building is one of the water construction buildings known as the sluice gate which serves to divide water according to the planned discharge by adjusting the water level. This building causes differences in inflow conditions in the upstream and downstream doors which results in the occurrence of scour around the measuring building which can endanger the construction. This research aimed at the analysis of the compressive strength of clay soil to make the scouring model on an open channel. The result showed the compressive strength of clay soil was 0,95 kg/cm2. It is expected that the results of this test will result in interactions between the factors causing changes in flow patterns from a model that directly affects scour.