نتایج جستجو برای: subgrade
تعداد نتایج: 1108 فیلتر نتایج به سال:
The use of different marine residues found in the great biodiversity Peruvian coast, such as crushed mollusk shells or fan shells, can be used mechanical stabilizers for clay soils due to a change granulometry. In this article, we reviewed 74 research studies indexed databases Scopus, Scielo, Ebsco, Proquest, Springer Link, and ScienceDirect, whose publication has not exceeded seven years, with...
At present, the longitudinal slope, cross slope control, thickness and elevation control of subgrade pavement depend on manual experience, results are not uniform, there process problems with defects such as over compaction, insufficient omission compaction unqualified vibration frequency amplitude in RCC construction process, quality can be obtained real time, resulting remedial difficulties. ...
Due to its high organic matter, moisture content, and low bearing capacity, peat soil needs be stabilized for use as a subgrade. The soybean crude urease calcite precipitation (SCU-CP) method is grouting technique using carbonate biocatalyst. This study aims analyze the effect of SCU-CP density on California ratio (CBR) value obtain best stabilization alternative reducing field’s compaction ene...
In this study, Brillouin optical time domain analysis (BOTDA) sensing technology was utilized for monitoring settlement in a similarity model of highway subgrade. As contact winding cannot be used an fiber that is buried directly the soil, uncoupling between and soil can occur. Thus, optical-fiber-embedded beam (OFEB) developed, method measuring calculating beam’s deformation proposed. A calibr...
The bearing plates used in plate load test for highway engineering are typically rigid. However, due to limitations obtaining the accurate distribution of compressive stress at bottom plate, there is often a significant deviation between measured subgrade resilient modulus and actual condition. To address this issue, flexible can be obtain more modulus. In study, we use variance degree mean qua...
Abstract Road construction over soft subgrade soil is a major issue affecting cost and scheduling of highway projects. Many techniques have been conducted to strengthen the subgrade. One them are using additives such as coconut shells, rice husk ash, stone dust, fly ash. soil. The strength commonly expressed California Bearing Ratio (CBR). In this study, crushed shells (CCS) 65 mm 10 ranges siz...
Various methods of soil stabilizations in Indonesia are more increasingly used for quality improvement, one the is using chemically additive materials with ISS 2500 (Ionic Soil Stabilizer). This chemical solution able to cover particles through electro-chemical reactions, so that water content separated and cohesion among strengthened. However, unstable weather temperature changes (durability) ...
To investigate the treatment effect of micro-piles on uplift deformation red-bedded soft rock subgrade, an in-situ static load test slurry injected steel pipe with different length was carried out, bearing capacity and characteristics were analyzed, transfer function pile lateral friction resistance modified consideration length. A numerical simulation method considering variable shear stiffnes...
This paper presents the results of a study influence degree compaction, humidity and temperature on coefficient moisture conductivity thawed frozen soils. To predict calculated content soils in working layer subgrade sections roads with close occurrence soil water level, method developed by Professor I.A. Zolotar. Conclusions are drawn about migration
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