PENGENDALIAN MUTU PELAKSANAAN PERKERASAN KAKU PROYEK PEMBANGUNAN JALAN TOL SOLO - KERTOSONO PAKET SN 2A STA 56+050 - 79+000

NINDYA PUTRI K D, Dr. Eng. Iman Haryanto, M.T.

2017 | Tugas Akhir | D3 TEKNIK SIPIL SV

Perkerasan kaku merupakan struktur lapisan yang terletak diatas tanah dasar yang berfungsi untuk menampung beban lalulintas yang melewatinya. Kelemahan dari perkerasan kaku adalah biaya pelaksanaan yang relatif mahal. Oleh karena itu pengendalian mutu diperlukan guna meminimalisir kemungkinan kegagalan. Pengendalian mutu dilakukan dalam tiga tahap yaitu quality plan (QP), quality assurance (QA), dan quality control (QC). Tahap QP meliputi penetapan standar yang diterapkan, pemilihan material dan alat yang akan digunakan, serta instruksi kerja. Tahap QA meliputi evaluasi pelaksanaan di lapangan dengan rencana yang telah dibuat. Tahap QC meliputi kegiatan pengujian terukur dari hasil pelaksanaan di lapangan dan penilaian berdasarkan standar Spesifikasi Khusus proyek. Hasil analisis menunjukan bahwa tahap QP, QA, dan QC telah terpenuhi. Material, mesin slipform paver, dan job mix telah memenuhi syarat QP. Pelaksanaan perkerasan kaku mengikuti instruksi kerja sesuai QA. Nilai slump, kuat lentur umur 7 hari dan 28 hari, kekuatan karakteristik, dan tebal slab telah memenuhi QC. QC diperlukan untuk kegiatan curing dan sawing. Kegagalan untuk pekerjaan curing dan sawing mengakibatkan terjadinya retak melintang dan retak rambut. Perbaikan slab retak menggunakan metoda pemotongan slab setebal 1/3 h, lalu retakan digrouting dan diperkuat dengan besi stek dan wiremesh, kemudaian dicor kembali.

Rigid pavement is a structure that lied on the ground, works to accommodate the traffic load. One of the disadvantages of this structure is its high cost. If failure occurs, it will require high cost. Therefore, quality control is needed to minimize the possibility of failure. Quality control is done in three steps, they are quality plan (QP), quality assurance (QA), and quality control (QC). QP include all the activities of identifying what quality standard is relevant to the project, selecting which material and tool to use, and understanding the work instruction. QA include all the activities of evaluating the method of work that applied on site compared with the work instruction that has planned on the Specification. QC include all the activities of testing, and determining specific project results if they comply with relevant quality standard. The analysis result shows that every step is complied. In QP, the result shows that the materials, slip-form paver, and job mix have met the requirements. In QA, the result shows that the method of work that applied on site is relevant with the work instruction. In QC, the results of slump test, 7-days flexural strength test, 28-days flexural strength test, characteristic strength, and core drill test have met the requirements. QC for curing and sawing is needed. Failure for these works caused transverse cracks. The method of reparation for the crack is as followed. Cut the slab 1/3 h, grout the crack, strengthened with steel and wire mesh, and recast the slab.

Kata Kunci : Perkerasan kaku, pengendalian mutu, quality plan, quality assurance, quality control