Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Indonesian Journal of Construction Engineering and Sustainable Development

Analisis Posisi Optimal Pengangkatan Balok U-Shell Dengan Menggunakan Crane Ahmad Hamidi
INDONESIAN JOURNAL OF CONSTRUCTION ENGINEERING AND SUSTAINABLE DEVELOPMENT (CESD) Vol. 2 No. 2 (2019): INDONESIAN JOURNAL OF CONSTRUCTION ENGINEERING AND SUSTAINABLE DEVELOPMENT (CES
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.981 KB) | DOI: 10.25105/cesd.v2i2.6461

Abstract

Riau University Education Hospital was built to support lectures and as a tool in research in the field of health. Teaching Hospital was built using U-Shell precast blocks with consideration of time and cost efficiency in project implementation. U-Shell beams are made at the project site and the method of lifting precast beams is generally recommended from the factory. While the U-Shell beam is made at the project site, it is necessary to calculate the lifting distance so that the beam when moved does not occur due tomoment damage. U-Shell beam lifting calculation is done with several alternatives, namely the position of 1 /3L, 1 / 4L and pedestal xL. The result of the moment calculation shows the moment value for each alternative, namely in the beam with dimensions of 350 mm x 800 mm position 1 / 3L M1 of-1242 Kgm and M2 of-931.5 Kgm, at position 1 / 4L M1 of-698.63 Kgm and M2 of 0, at position 1 / 5L M1 of-478.97 Kgm and M2 of 480.64 Kgm. As for the beam with dimensions of 300 mm x 700 mm position 1 / 3L M1 of -460.8 Kgm and M2 of -345.6 Kgm, at position 1 / 4L M1 of -256.2 Kgm and M2 of 0, at position 1 / 5L M1 of - 177.7 kg and M2 of 178.32 kg. From the three alternatives we get an effective lifting position, which is 1 / 5L.
TINJAUAN KUAT LENTUR BALOK PADA BETON MUTU TINGGI DENGAN MENGGUNAAN WASTE CONCRETE Ahmad Hamidi; Sjelly Haniza; M. Ardi Idris
INDONESIAN JOURNAL OF CONSTRUCTION ENGINEERING AND SUSTAINABLE DEVELOPMENT (CESD) Vol. 4 No. 2 (2021): INDONESIAN JOURNAL OF CONSTRUCTION ENGINEERING AND SUSTAINABLE DEVELOPMENT (CES
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (386.856 KB) | DOI: 10.25105/cesd.v4i2.12599

Abstract

The use of reinforced concrete as a building material has become one of the solutions to get a strong and sturdy building. The use of reinforced concrete is considered to have strength in resisting compressive and tensile forces. Besides, concrete can be used according to the quality level required during the construction process. The use of concrete sometimes results in waste concrete such as used pile fragments, broken concrete from building repairs, or from tests in the laboratory. If waste concrete is not utilized, it will become an environmental problem in the future. The existence of waste concrete if it is utilized will be able to provide economic value and can reduce the occurrence of environmental problems, one of which is the use of waste concrete from broken electric poles from one of the producers. This waste concrete is the result of testing electric poles before being distributed to the owner. The fragments of electricity pile waste concrete can be used as a substitute for some of the coarse aggregate in high strength concrete. The waste concrete is cracked first and the granules used are those that pass the 30 mm sieve with a percentage of 20% of the total coarse aggregate. To get good workability, a superplasticizer is used as an added ingredient. The variation in the use of the superplasticizer is 0%; 0.5%; 1% and 1.5%. The flexural strength test was carried out at the age of 28 days with the results of the average compressive strength for 0% variation of 3.2 MPa, 0.5% variation of 3.69 MPa, 1% variation of 4.67 MPa, and 1.5% variation amounting to 5.02 MPa with the percentage rate of increase from normal concrete successively of 15.28%; 39.76% and 39.05%.