Research on mechanical performance and micro-structural characteristics for large graded aggregates

Yuan, Gaoang; Zhang, Jinliang; Ren, Ziming; Song, Zhiyu

doi:10.1016/j.conbuildmat.2022.127860

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…Pada uji pemadatan tanah yang dilakukan dengan selisih air 2,5% dari kelima sampel tanah pasir bergradasi buruk (SP) didapatkan hasil yang ditunjukkan pada Tabel 2. Dari Gambar 3 pengujian diperoleh OMC sebesar 16,50% dengan MDD sebesar 15,66 kN/m 3 dari puncak tertinggi (Yuan et al, 2022). Kurva zero air void digambarkan guna menunjukkan berat kering tanah maksimum yang dapat dicapai oleh kadar air dan berat jenis tertentu.…”

Section: Uji Pemadatanunclassified

Perilaku Mekanis Tanah Pasir Bergradasi Buruk Menggunakan Uji Pemadatan dan Direct Shear Test

Rivianto,

Candra,

Ali

et al. 2023

jts

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Tanah memiliki unsur-unsur penting bagi makhluk hidup sebagai tempat tinggal, bahan bangunan dan media tanam. Keanekaragaman sifat-sifat tanah telah dipahami dalam berbagai bidang ilmu. Ketahanan tanah sangat memengaruhi kestabilan dan daya dukung tanah pada bangunan sipil. Sampel tanah diambil dari Desa Sidorejo Kabupaten Nganjuk yang tergolong tanah berpasir bergradasi buruk (SP). Banyak penyelidikan telah dilakukan mengenai sifat fisik dan mekanik tanah dengan memeriksa pemadatan dan kekuatan geser. Namun, masih banyak peneliti yang belum mengetahui perilaku mekanik tanah secara detail mengenai tanah (SP). Uji pemdatan dilakukan menggunakan metode Standard Proctor Test dengan penambahan air pada setiap sampel sebesar 2,5%, dilanjutkan dengan pengujian kuat geser menggunakan metode Direct Shear Test dari sampel pemadatan dengan berat basah maksimum. Penelitian ini bertujuan untuk mengetahui perilaku mekanik tanah pasir bergradasi buruk (SP) terhadap kuat geser. Pengujian kuat geser diperoleh nilai kohesi sebesar 2,0305 kPa dan sudut geser sebesar 28,892°. Berdasarkan hasil penelitian, sifat mekanik tanah (SP) dapat dijadikan acuan untuk konstruksi pada jenis tanah dan klasifikasi tanah yang sama

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Section: Uji Pemadatanunclassified

Perilaku Mekanis Tanah Pasir Bergradasi Buruk Menggunakan Uji Pemadatan dan Direct Shear Test

Rivianto,

Candra,

Ali

et al. 2023

jts

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“…Yuan et al applied the compressive packing model to the gradation optimization of LPS-GCSM. According to the characterization of the skeleton structure, it was concluded that 13.2 mm and 26.5 mm were the key sieve sizes, which were 0.22 and 0.5 times the maximum particle size, respectively [27].…”

Section: Introductionmentioning

confidence: 99%

Mix Design and Field Detection of Large-Particle-Size Graded Crushed Stone Mixtures for Pavement Reconstruction

Yi,

Xu,

Pan

et al. 2024

Buildings

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Large-particle-size graded crushed stone mixtures (LPS-GCSMs) can improve the shortcomings of conventional graded crushed stone, such as low strength, high deformation, and a low modulus of resilience. At present, there is no systematic research on the gradation design and field evaluation of the LPS-GCSMs. In this study, compaction and California bearing ratio (CBR) tests and field construction conditions were combined to design six kinds of gradation of LPS-GCSM, and the optimum gradation was revealed. In order to improve the mechanical properties of LPS-GCSM, 2.5% cement was added to the mixture to prepare a low-content cement-modified LPS-GCSM (LCC-LPS-GCSM) based on the suggested gradation. The mechanical properties of the LCC-LPS-GCSM were investigated through unconfined compression strength (UCS) and compression rebound modulus (CRM) tests. Moreover, the compaction and deflection properties of LPS-GCSM and LCC-LPS-GCSM were examined through the test battery. The results showed that the optimum gradation of LPS-GCSM can be achieved with a combination of aggregate sizes of 20–40 mm, 10–20 mm, 5–10 mm, and 0–5 mm at a ratio of 44:20:10:26. The passing rates of 19 mm and 4.75 mm should be approximately at the median value of the gradation in view of field construction uniformity and a coarse aggregate interlocking effect. The UCS and CRM values of LCC-LPS-GCSM increased rapidly from 0 day to 28 days while they slowed after 28 days, which was similar to those of cement-stabilized materials. The field detection suggested that LPS-GCSM exhibited favorable compaction and that the addition of cement improved the stability of the field compaction of the mixture. Adding a subbase course of LPS-GCSM between the old pavement and the LCC-LPS-GCSM base can lead to more uniform stress on the base. The results of this study provide a reference for the gradation design of LPS-GCSM and optimization of the design indicators.

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Evolution law study of pore and fracture of coal gangue cemented filling body under axial compression using PFC2D

Huang,

Wang,

Chang

et al. 2024

Construction and Building Materials

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Research on mechanical performance and micro-structural characteristics for large graded aggregates

Cited by 4 publications

References 19 publications

Perilaku Mekanis Tanah Pasir Bergradasi Buruk Menggunakan Uji Pemadatan dan Direct Shear Test

Perilaku Mekanis Tanah Pasir Bergradasi Buruk Menggunakan Uji Pemadatan dan Direct Shear Test

Mix Design and Field Detection of Large-Particle-Size Graded Crushed Stone Mixtures for Pavement Reconstruction

Evolution law study of pore and fracture of coal gangue cemented filling body under axial compression using PFC2D

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