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Record W2614667866 · doi:10.25077/jrs.7.1.25-36.2011

UJI POTENSI MENGEMBANG PADA TANAH LEMPUNG DENGAN METODA FREE SWELLING TEST (Studi Kasus: Tanah Lempung Limau Manih – Kota Padang)

2011· article· id· W2614667866 on OpenAlexaboutno aff
Rina Yuliet, Abdul Hakam, Getby Febrian

Bibliographic record

VenueJurnal Rekayasa Sipil (JRS-Unand) · 2011
Typearticle
Languageid
FieldEngineering
TopicGeotechnical and construction materials studies
Canadian institutionsnot available
Fundersnot available
KeywordsPhysics

Abstract

fetched live from OpenAlex

Fenomena pengembangan (swelling) tanah lempung menimbulkan berbagai dampak pada konstruksi bangunan sipil. Banyak negara di dunia yang menghadapi masalah pada pengembangan tanah lempung ini seperti negara Amerika Serikat, Canada, Israel, Australia dan banyak negara di Afrika dan Asia Barat. Pada penelitian ini dilakukan pengujian pada tanah lempung yang menitikberatkan pada potensi pengembangannya, terdiri dari aktivitas pengembangan, tekanan pengembangan, dan persentase pengembangan. Percobaan di laboratorium dilakukan dengan metoda uji pengembangan bebas (free swelling test) berdasarkan ASTM D4546-1990. Penelitian ini dilakukan dengan menggunakan sampel tanah lempung yang berasal dari daerah Limau Manih, kota Padang sebanyak 3 sampel disturbed dan 1 sampel undisturb. Sebelum dilakukan uji potensi pengembangan, dilakukan terlebih dahulu uji identifikasi tanah dan uji pemadatan tanah. Sampel diuji dengan alat konsolidometer (aedometer) dengan berbagai kondisi. Masing-masing sample memiliki kepadatan yang berbeda-beda. Kepadatan sampel berdasarkan uji pemadatan dengan variasi tumbukan 12, 25 dan 50 tumbukan serta juga dilakukan pengujian terhadap tanah pada kondisi tidak terganggu (undisturb). Dari penelitian ini dapat disimpulkan bahwa tanah yang terdapat di daerah Limau Manih, kota Padang merupakan tanah lempung ekspansif yang memiliki potensi mengembang yang tinggi dengan data tanah sebagai berikut: LL=119.37 %, PL=51.54 %, PI=67.83 %, dan GS=2.647. Pada penelitian uji pengembangan, untuk sampel pemadatan 12 tumbukan didapatkan swelling pressure 62.2 kPa, 25 tumbukan 60 kPa, 50 tumbukan 55.5 kPa dengan potensi pengembangan kecil, dan sampel undisturbed 106 kPa dengan potensi pengembangan sedang. Penelitian untuk uji potensi mengembang menghabiskan waktu total 7 hari untuk masing-masing sampel. Keywords: swelling, lempung ekspansif, free swelling test, percent swelling, swelling pressure

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.009
Threshold uncertainty score0.030

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0010.001
Science and technology studies0.0010.001
Scholarly communication0.0010.001
Open science0.0000.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0090.002

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.025
GPT teacher head0.199
Teacher spread0.175 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations7
Published2011
Admission routes1
Has abstractyes

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