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PENGARUH VARIASI DIAMETER MAKSIMUM AGREGAT DALAM CAMPURAN TERHADAP KEKUATAN TEKAN BETON Helwiyah Zain
Jurnal Teknik Sipil Unaya Vol 3, No 1 (2017): Januari 2017
Publisher : Center for Research and Community Service (LPPM) University of Abulyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30601/jtsu.v3i1.22

Aggregate is a natural mineral grains that serve as filler in concrete mix, and the greatest material contained in the concrete. These material influence on the properties of concrete, so that the diameter size selection is essential in making the concrete. This study aims to determine the effect of variations of aggregate maximum diameter to the compressive strength of concrete. In this study used 15 specimens, were divided into 3 groups witch each of 5 specimens. Each group is distinguished aggregate maximum diameter: 31.5 mm, 16 mm, and 8 mm. Specimens used in this study is the specimen cylinder with a diameter of 15 cm and 30 cm high. Speciment tested done at age of concrete 28 days. The average compressive strength of concrete for each group of test based on variations of the aggregate maximum diameter is: for the aggregate maximum diameter of 31.5 mm = 249.67 kg / cm2; the aggregate maximum diameter 16 mm = 274.91 kg / cm2; and the aggregate maximum diameter of 8 mm = 326.74 kg / cm2. Based on these test results, show that the average compressive strength of the concrete for the aggregate maximum diameter of 16 mm is 10.11% stronger than the concrete with the aggregate maximum diameter of 31.5 mm; and the strength of concrete aggregate maximum diameter of 8 mm, 30.87% stronger than the concrete with aggregate maximum diameter of 31.5 mm.

PENGARUH UKURAN DIAMETER LUBANG DALAM ARAH MEMANJANG TERHADAP KEKUATAN TEKAN BENDA UJI SILINDER BETON Helwiyah Zain
Jurnal Teknik Sipil Unaya Vol 3, No 2 (2017): Juli 2017
Publisher : Center for Research and Community Service (LPPM) University of Abulyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30601/jtsu.v3i2.24

Design of buildings should pay attention to aspects; Strength, comfort, economics, and aesthetics. One aspect of the aesthetic that is often seen is the rain water pipeline from the roof to the channel on the ground. In order for this pipe is not be seen from the outside, it can be done by aasembling into thecore of the column so that it looks beautiful. To know the effect of hole in the column, need to do research. The aim of this research is to find out the influence of the variation of the size of the longitudinal aperture in the cylindrical specimen against the compressive strength of the concrete. The number of specimen were 20 pieces, consisting of 15 pieces of specimens given pipe holes and 5 pieces are not given a hole (intact). Variations of hole size, namely: 2.5 cm, 5 cm and 7.5 cm. Each variation of hole size of specimen 5 pieces. Concrete mixture design is done based on ACI method. The specimens used in this research are cylindrical shape specimens with diameter 15 cm and height 30 cm. Testing of concrete compression done at age 28 days. The test of the specimen is carried out by giving the compression load slowly until the specimen failured. The test results obtained the compressive strength of the specimen without hole = 266.48 kg / cm2; specimen with hole diameter 2.5 cm = 243,08 kg / cm2; specimen with hole diameter 5 cm = 226,22 kg / cm2; and specimen with hole diameter 7.5 cm = 190,13 kg / cm2. The results of this experiments show that the specimen with diameter of hole 2.5 cm is 91% of the specimen without hole, the specimen with hole diameter 5 cm is 85% of the specimen without hole; and the specimen with hole diameter 7.5 cm is 71% of the specimen without hole. The results of this experimen show that the larger size of the hole in the column the smaller the compressive strength of the concrete compared to the specimen without holes.

PENGARUH WAKTU PENGANGKUTAN ADUKAN BETON KE TEMPAT PENGECORAN TERHADAP KEKUATAN TEKAN Helwiyah Zain
Jurnal Teknik Sipil Unaya Vol 1, No 2 (2015): Juli 2015
Publisher : Center for Research and Community Service (LPPM) University of Abulyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30601/jtsu.v1i2.15

There is still a lot of casting concrete implementation which is mixing location was far with the casting location, because the situation in the field there are many obstacles to implement it. As a result, from the mixing place to a casting place take a long time, so long as transportation there is a process of hydration in the concrete, which can cause a decrease in the quality of the concrete. To determine the decreasing of concrete quality, the research conducted is to determine the effect of time between when the mixing process of the concrete to casting process. This study used 48 specimens were divided into two groups, namely 24 specimens using the time difference without rotation and 24 pieces again with rotation. Each specimen using the same water cement ratio (fas), namely 0.45. Each group was subdivided in 6 variations in the time between mixing and casting namely :. 0 minutes, 12 minutes, 24 minutes, 36 minutes, 48 minutes and 60 minutes witch each variation using 4 specimens. The result of compressive strength each specimen group, for group I (without rotation) is 348 kg / cm2 for 0 minutes, 342 kg / cm2 for 12 minutes, 333 kg / cm2 for 24 minutes, 322 kg / cm2 for 36 minutes, 310 kg / cm2 for 48 minutes, and 294 kg / cm2 for 60 minutes. For group II (with rotation) is: 338 kg / cm2 for 0 minutes, 336 kg / cm2 for 12 minutes, 333 kg / cm2 for 24 minutes, 329 kg / cm2 for 36 minutes, 324 kg / cm2 for 48 minutes , and 318 kg / cm2 for 60 minutes. The results showed that, for the concrete without rotation: compressive strength at 60-minute time delay decreased by 15.52% of normal concrete (0 minute delay), and to the mixing concrete with rotation, compressive strength on delay of 60 minutes decreased by 5.92 % of normal concrete (0 minute delay). These results indicate that the delay time without rotation the greater the loss quality of concrete.

PERILAKU BALOK KAYU MERANTI SEBAGAI BAHAN BANGUNAN UTAMA RUMAH TRADISIONAL ACEH Helwiyah Zain
Jurnal Teknik Sipil Unaya Vol 1, No 1 (2015): Januari 2015
Publisher : Center for Research and Community Service (LPPM) University of Abulyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30601/jtsu.v1i1.6

The objective of this research is to get the behaviour of Meranti wood beams as a material of Aceh traditional building. The behaviour is to gain the relationship between load-deflection of wood beams test. Meranti woods are got from 6 locations of woods machinery i.e: 3 locations in the area Banda Aceh and other 3 lcations in Aceh Besar. The flexural test was used 5x7x120 cm wood beams size, and total 30 specimens.from those 6 locations. To get other supporting data, the other test was done i.e.: physical characteristic and mechanical characteristic. Physical characteristic was done with specific gravity test, and moisture content test which are 10 specimens each test. Mechanical characteristic was done with tensile test and compression test which are 10 specimens each test. The result of the test obtained moisture content was 13,19% at 28,9o C temperature. Average specific gravity was 0,429. Tensile strength parallel to main fiber was 448,1 kg/cm2 at 0,53 % average maximum strain. Compression strength parallel to main fiber was 316,9 kg/cm2 at 0,41 % average maximum strain. Average modulus of elasticity from tensile test was found 84.547 kg/cm2. Flexural characteristic was a relationship between load-deflection plotted as a graph in the text. Based on these result could be concluded that Meranti woods was appropriated to be material building Aceh traditional houses.

ANALISIS KINERJA SIMPANG TIGA TAK BERSINYAL Helwiyah Zain; Meliyana Meliyana; Muhaimin Muhaimin
Jurnal Teknik Sipil Unaya Vol 2, No 1 (2016): Januari 2016
Publisher : Center for Research and Community Service (LPPM) University of Abulyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30601/jtsu.v2i1.20

Simpang Lamlo is one of No-Signal Three-way Junctions in National Road from Banda Aceh to Medan as a Main road and is connected directly to the Cross-Regional Road that is from Beureuneun to Geumpang as the Minor Road and vice versa. The purpose of this study is to analyze the performance of the No-Signal Three-Way Junctions by using the Indonesian Highway Capacity Manual 1997. Data required in this study are primary and secondary data. The primary data is in the form of the condition data of traffic, intersection geometric, and environment. Secondary data includes the population growth and the map of the road network. Traffic data were collected by using video recording on Monday, Wednesday and Saturday at 7.00 a.m. – 9.00 a.m., 12.00 p.m. – 2.00 p.m and 5.00 p.m. – 7.00 pm. These data were processed by using Microsoft Excel based on MKJI 1997 and and the results were made in the form of tables and graphics. From the tables and graphics, it could be known for the traffic volume, composition, and the peak hours occured in the intersections. The calculation on the peak hour with the current highest peak is on Monday, 5.00 p.m. - 6:00 p.m. in which the traffic volume at the intersection is 2737 (smp / hour). The capacity value of the existing condition in Simpang Lamlo is 2762 (smp / hour). The traffic delay in the intersection is 11,63 (det / smp). The degree of saturation at the existing condition is 0.99, higher than the provision in Indonesian Highway Capacity Manual which is 0,75. The intersection delay value is 15.64 (det / smp) and the queue chance at the intersection is 39,43% to 77,98%,

Analisis Kebutuhan Sumur Resapan Sebagai Salah Satu Upaya Dalam Mereduksi Banjir Genangan Meliyana Meliyana; Ichsan Syahputra; Helwiyah Zain; Antoniadi Zal
Jurnal Teknik Sipil Unaya Vol 4, No 2 (2018): Juli 2018
Publisher : Center for Research and Community Service (LPPM) University of Abulyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30601/jtsu.v4i2.34

Impermeable land in a region can not absorb rain water, so that rain water becomes run off and cause flood inundation. Absorption wells function to accommodate and absorb rain water into the soil. The purpose of this study to know the value of soil permeability, determine the dimensions and number of absorption wells in reducing flood. The study was conducted at Elementary School 1 Pulo Ie Kabupaten Nagan Raya with area of 1500 m2 and the number of buildings as many as 4 units. The absorption well planning refers to regulation of the Minister of Public Works 11/PRT/M/2014. The data used in the planning form average daily rainfall, flood volume, soil permeability value, runoff coefficient value, depth of ground water level and wide field of cistern. The result of analysis obtained maximum daily rainfall average maximum (R) equal to 36,25 mm/day, volumes of flood (Vab) 11,552 m3, cistern area 497 m2, runoff coefficient value of 0.75 and soil permeability value (K) 0.009725 cm/sec or 8.40 m/day. Rectangular Absorption wells with depth of well (H) 1.60 meters and base well (L) width 1.20 meters. The number of absorption wells required 5 units. Thus, the flood of inundation at the Elementary School 1 Pulo Ie can be accommodated by the absorption wells, so that the flood of inundation can be overcome.

Pelatihan Software Mendeley Dalam Peningkatan Kualitas Artikel Ilmiah Bagi Dosen Cut Rahmawati; Meliyana Meliyana; Yuliana Yuliana; Helwiyah Zain
JURNAL PENGABDIAN KEPADA MASYARAKAT Vol 8, No 1 (2018): Juni 2018
Publisher : LPPM UNINUS

Publications in international journals and national journals require articles to be written scientifically and use a good reference manager. In this case, there are still many lecturers who have difficulty in writing citations and bibliography. They still undergo manual operating system in changing citations and different styles of bibliographies. This workshop is based on the difficulty of lecturers in publishing their scientific articles in reputable international journals and accredited national journals, especially in writing bibliographies and citations. The workshop was conducted in the form of Mendeley software training on the lecturers' scientific articles. Mendeley software gives a lot of benefit in improving the quality of scientific article writing that is easy for lecturers in writing citations and bibliography. The workshop was held in Abulyatama University involving lecturers from Abulyatama University and other universities such as Serambi Mekkah University and Ar-Raniry State Islamic University. The total number of lecturers who participate in the workshop is 30 lecturers. The ways of workshop delivery are in the form of lectures, practices and frequently asked questions. Surveys were conducted by distributing questionnaires before and after the workshop activities. The results of the workshop show that the lecturers have been able to apply Mendeley in writing citations and bibliography. This workshop gave positive results in improving the lecturers’ ability to write scientific articles. Among the participants' difficulties were in term of Mendeley installation process (6.67 %), the use of it in mobile applications (20 %), and coaching other colleagues (10 %). Approximately 10 % of lecturers feel that they still need additional training for the smoothness use of this application. All lecturers feel that Mendeley is very helpful and will use this application in their publications.

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