| dc.contributor.advisor | SALEH, FADILLAWATY | |
| dc.contributor.advisor | MONIKA, FANNY | |
| dc.contributor.author | PRASETYO, HANIF PUTRO | |
| dc.date.accessioned | 2019-09-28T03:56:30Z | |
| dc.date.available | 2019-09-28T03:56:30Z | |
| dc.date.issued | 2019-07-22 | |
| dc.identifier.uri | http://repository.umy.ac.id/handle/123456789/29172 | |
| dc.description | Beton merupakan salah satu bahan yang banyak digunakan dalam pekerjaan
konstruksi. Pekerjaan konstruksi yang memakai campuran beton sebagai bahan
dasarnya, kemungkinan memiliki permasalahan yang dapat menyebabkan
terlambatnya proses pengecoran. Terlambatnya proses pengecoran yang cukup
lama dapat menimbulkan cold joint (sambungan dingin) yang akan muncul pada
alur permukaan lapisan beton lama dengan lapisan beton baru mengingat setting
time beton yang singkat. Penelitian ini bertujuan untuk menganalisis pengaruh cold
joint horizontal cast dengan kuat tekan beton yang dihasilkan. Beton yang dipakai
menggunakan bahan tambahan berupa serat polypropylene yang diharapkan dapat
meningkatkan nilai kuat tekan beton dalam kondisi cold joint. Hasil pengujian kuat
tekan beton cold joint serat polypropylene dibandingakan beton normal pada umur
28 hari dengan waktu jeda pengecoran 120 menit menunjukkan peningkatan kuat
tekan sebesar 7,08% untuk arah vertikal dan penurunan kuat tekan sebesar 30,01%
untuk arah horizontal. Hasil kuat tekan beton cold joint serat polypropylene
dibandingakan beton normal pada umur 28 hari dengan waktu jeda pengecoran 240
menit menunjukkan penurunan kuat tekan sebesar 10,82% untuk arah vertikal dan
penurunan kuat tekan sebesar 33,33% untuk arah horizontal. Hasil pengaruh lama
waktu jeda pengecoran 120 dan 240 menit terhadap kuat tekan beton cold joint serat
polypropylene arah vertikal dan horizontal mengalami penurunan. Penurunan
pengaruh lama waku jeda pengecoran pada arah vertikal sebesar 16,72% sedangkan
arah horizontal sebesar 4,72%. Hasil penelitian menunjukkan bahwa semakin lama
waktu jeda pengecoran maka kuat tekan beton semakin berkurang dan penambahan
serat dalam campuran dapat meningkatkan kuat tekan beton. | en_US |
| dc.description.abstract | Concrete is one of the materials widely used in construction work.
Construction work that uses concrete mixtures as its basic material, may have
problems that can cause a delay in the casting process. Late casting process can
cause a cold joint (cold connection) which will appear on the surface of the old
concrete layer with a new concrete layer considering the short concrete time
setting. This study aims to analyze the effect of the horizontal cold joint with the
compressive strength of the concrete produced. The concrete uses additional
materials in the form of polypropylene fibers which are expected to increase the
value of concrete compressive strength under cold joint conditions. The results of
normal concrete compared to polypropylene fiber joints at the age of 28 days with
a 120 minutes casting interval showed an increase in compressive strength of
7.08% for vertical direction polypropylene fiber joints and a decrease in
compressive strength of 30.01% for cold joint polypropylene fibers horizontal
direction. While polypropylene fiber joint cold concrete with a casting time of 240
minutes compared to normal concrete showed a decrease in compressive strength
of 10.82% for vertical direction polypropylene fiber joints and 33.33% for
horizontal direction polypropylene fiber joints. The results of the effect of 120 and
240 minutes casting interval on the compressive strength of cold joint
polypropylene fibers in the vertical and horizontal directions decreased. The
decreasing the influence of the old-time casting interval in the vertical direction is
16.72% while the horizontal direction is 4.72%. This study showed that the longer
the casting interval decreases the compressive strength of the concrete and the
addition of fiber in the mixture can increase the concrete compressive strength. | en_US |
| dc.publisher | FAKULTAS TEKNIK UNIVERSITAS MUHAMMADIYAH YOGYAKARTA | en_US |
| dc.subject | concrete, compressive strength, cold joint, and polypropylene fiber | en_US |
| dc.title | KUAT TEKAN BETON PADA COLD JOINT HORIZONTAL CAST DENGAN PERKUATAN SERAT POLYPROPYLENE | en_US |
| dc.type | Thesis
SKR
FT
286 | en_US |
