scholarly journals Assessment of Field Compaction of Aggregate Base Materials for Permeable Pavements Based on Plate Load Tests

2018 ◽  
Vol 10 (10) ◽  
pp. 3817 ◽  
Author(s):  
Yong-Jin Choi ◽  
Donghyun Ahn ◽  
Tan Nguyen ◽  
Jaehun Ahn
Keyword(s):  
Mechanical Behavior ◽  
Field Experiments ◽  
Low Impact Development ◽  
Base Layer ◽  
Permeable Pavements ◽  
Base Materials ◽  
Major Interest ◽  
Field Compaction ◽  
Load Tests ◽  
Aggregate Base

The permeable pavement is one of Low Impact Development technics that allows stormwater to infiltrate through the pavement surface and the underlying base layer, thereby reducing surface runoff and preventing water contamination. For permeable base layers of permeable pavements, open-graded aggregates are often used to infiltrate and store stormwater in the pore of aggregate base layers. The mechanical behavior of open-graded aggregates has not been a major interest of pavement industry and society, and therefore there is much less information known for behavior of compacted open-graded aggregates comparing to dense-graded materials. This study aims at investigating the mechanical behavior of compacted permeable or open-graded aggregate base materials based on field experiments. Five different open-graded aggregates were selected, and they were compacted in the field up to 12 passes with a 10-ton vibratory compaction roller. The mechanical behaviors of aggregates were evaluated by conducting plate load tests at 2, 4, 8, and 12 passes of roller. For the test conditions considered herein, the strain modulus at the first loading seems to provide more consistent results with respect to aggregate types and level of compaction than other stiffness measures from plate load tests.

Evaluation of Resilient Modulus of Cemented Lime Rock Base Materials in Florida

1996 ◽  
Vol 1546 (1) ◽  
pp. 1-12
Author(s):  
W. Virgil Ping ◽  
Ling Ge
Keyword(s):  
Resilient Modulus ◽  
Load Test ◽  
Base Layer ◽  
Pavement Materials ◽  
Analysis And Design ◽  
Field Plate ◽  
Base Materials ◽  
Bearing Load ◽  
Load Tests ◽  
Applied Stresses

The resilient modulus of pavement materials is an important parameter in pavement analysis and design. In recent years the emphasis of research has primarily been concentrated on investigating the resilient modulus of subgrade materials. Information is lacking on the resilient modulus of base materials for determining the properties of pavement layers. The results of field plate bearing load tests and laboratory resilient modulus tests on lime rock base materials are presented. Correlation relationships between the field layer modulus and the laboratory resilient modulus are evaluated. Comparison of the computed resilient modulus of the base layer with the layer modulus from the plate bearing load test under identical moisture and density conditions indicated a trend of increasing laboratory resilient modulus with increasing plate load modulus. The average values of the layer modulus backcalculated from the plate bearing load tests were higher than those of the computed equivalent resilient modulus from the laboratory tests with the averaged applied stresses in the elastic range.

Deterioration of Asphalt Pavement at Long-Term Pavement Performance Program Site 49-1001 in Utah

2005 ◽  
Vol 1933 (1) ◽  
pp. 121-125
Author(s):  
Brandon J. Blankenagel ◽  
W. Spencer Guthrie
Keyword(s):  
Base Layer ◽  
Pavement Performance ◽  
Falling Weight Deflectometer ◽  
Water Drainage ◽  
Base Materials ◽  
Pavement Deterioration ◽  
Pavement Base ◽  
Aggregate Base ◽  
Falling Weight

Highway 191 near Bluff, Utah, features a well-monitored section of the long-term pavement performance (LTPP) program. Constructed in 1980, this section of flexible pavement performed well for nearly 13 years. Through this time, cracking of the asphalt layer was minimal. In the fourteenth year, however, the extent of longitudinal cracking in the wheel path increased and necessitated placement of a chip seal on the pavement surface. The purpose of this research was to determine the cause of pavement deterioration using LTPP data. Deflection basins obtained from falling-weight deflectometer testing were analyzed to investigate the extent to which structural degradation influenced deterioration of the pavement. Pavement layer modulus values were plotted against time and clearly show that weakening of the pavement base layer immediately preceded the occurrence of cracking. The geography of the site, as documented in photographs, supports the conclusion that inadequate water drainage at the site permitted saturation of the aggregate base layer during a period of midsummer flooding. This finding emphasizes the importance of specifying non-moisture-susceptible base materials and providing necessary drainage works in pavement design.

scholarly journals PRODUKTIVITAS ALAT BERAT DAN BIAYA PELAKSANAAN PEKERJAAN PADA PROYEK PEMELIHARAAN BERKALA RUAS JALAN: SUNGAI LAKUM – PASAR KAMIS (KERTAK HANYAR)

INFO-TEKNIK ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 103
Author(s):  
Aulia Isramaulana ◽  
Rizka Norjanah
Keyword(s):  
Theoretical Analysis ◽  
Data Processing ◽  
Field Data ◽  
Unit Price ◽  
Base Layer ◽  
Class A ◽  
Heavy Equipment ◽  
Periodic Maintenance ◽  
Class B ◽  
Aggregate Base

On the project Periodic Maintenance of Road Sungai Lakum Pasar Kamis is a project implemented using heavy equipment. By using heavy equipment, will facilitate and accelerate the course of the project. The tools used must be considered maintenance, because it is very influential on the production tools and costs incurred for the use of the tool. This study aims to analyze the use of heavy equipment in the periodic Maintenance Project of road Sungai Lakum Pasar Kamis by using theoretical analysis based on field data. Analyzing the calculation is the productivity and cost of the equipment on the scope of work that is the work of the land, widening work and road shoulder work, grinding pavement work, and asphalt work, using Excel program as a tool in data processing so that the achievement of the use of heavy equipment available in finish the job. Based on the calculation obtained the price of theoretical analysis unit based on field data for the work of preferred stockpiles from the source of Rp. 310.994.714,2; Class B aggregate base layer Rp. 76.127.086,04; Aggregate base layer with hill excavation Rp. 59.705.050,39; Class A base aggregate layer Rp. 204.703.029,9; Asphalt lining resap coat liquid Rp. 3.038.436,28; Lataston coating foundation Rp. 306.997.682,6. Where the calculation of unit price based on field data is smaller than the unit price of the bid data.

The performance of LID (low impact development) practices at different locations with an urban drainage system: a case study of Longyan, China

2015 ◽  
Vol 10 (4) ◽  
pp. 739-746 ◽  
Author(s):  
Peng Li ◽  
Jun Liu ◽  
Rui Fu ◽  
Xin Liu ◽  
Yanyan Zhou ◽  
...  
Keyword(s):  
Land Surface ◽  
Peak Flow ◽  
Low Impact Development ◽  
Drainage System ◽  
Green Roofs ◽  
Similar Degree ◽  
Rain Gardens ◽  
Runoff Generation ◽  
Permeable Pavements ◽  
Rain Barrels

Urbanization has strongly changed the condition of the land surface and therefore rainfall runoff varies greatly. Peak flood flow and flood volumes increase with runoff volume. Low Impact Development (LID) is a sustainable concept that minimizes the effects of urbanization to maintain natural hydrological function in urban cities and has therefore gained increasing attention. This paper studies the effects of low impact development measures on the reduction of runoff generation and peak runoff at different locations in Longyan, China. The study was conducted using the SWMM model (5.1.006) with a newly developed LID module. In this study, the LID module, which includes rain gardens, green roofs, permeable pavements, and rain barrels, was used to simulate different layout scenarios and different rainfall patterns. The results show that the performance of a certain LID is similar at different locations but the reduction effect on runoff and peak flow varies. Rain gardens and permeable pavements perform a similar degree of reduction under different durations, but the peak flow reduction by rain barrels and green roofs varies greatly. Further research should focus on composite LID applications in other locations, combination with the local pipe network layout, which will ensure that the implemented system will be aesthetically pleasing, economically viable, and effective for reducing runoff and peak flow.

Intelligent Compaction for Quality Control and Acceptance for Soil and Base Compaction through Statistical Analysis

2018 ◽  
Vol 2672 (52) ◽  
pp. 325-332
Author(s):  
Jimmy Z. Si
Keyword(s):  
Quality Control ◽  
Normal Distribution ◽  
Data Distribution ◽  
Statistical Methodology ◽  
Mapping Data ◽  
Intelligent Compaction ◽  
Subgrade Soil ◽  
Field Compaction ◽  
Aggregate Base

This paper presents the results of the intelligent compaction data that were collected from various layers including subgrade soil, lime-treated subgrade, cement-treated base and flexible aggregate base layers. Sets of proof-mapping data were collected from each layer upon completion of compaction. The data was then downloaded and analyzed using a computer program. Based on the data analysis and field compaction observation, a new statistical methodology for analyzing intelligent compaction data is proposed. The method is used to assess the uniformity of soil and base compaction quality and this is successfully demonstrated through a case study. A typical normal distribution of an intelligent compaction dataset indicates that a good and uniform compaction is achieved. It is, therefore, possible to assess the compaction quality by evaluating the perfection of normal districtuion of an intelligent compaction (IC) dataset. The compaction uniformity is evaluated by a compaction uniformity index, which is defined as the ratio of the probability within the specified limits in a field compaction data distribution to the probability in a target normal distribution.

scholarly journals Fatigue Equation of Cement-Treated Aggregate Base Materials under a True Stress Ratio

2018 ◽  
Vol 8 (5) ◽  
pp. 691 ◽  
Author(s):  
Songtao Lv ◽  
Chaochao Liu ◽  
Jingting Lan ◽  
Hongwei Zhang ◽  
Jianlong Zheng ◽  
...  
Keyword(s):  
Stress Ratio ◽  
True Stress ◽  
Base Materials ◽  
Aggregate Base ◽  
Fatigue Equation

scholarly journals Investigation of the low impact development strategies for highly urbanized area via auto-calibrated Storm Water Management Model (SWMM)

2021 ◽  
Author(s):  
Ömer Ekmekcioğlu ◽  
Muhammet Yılmaz ◽  
Mehmet Özger ◽  
Fatih Tosunoğlu
Keyword(s):  
Water Management ◽  
Model Calibration ◽  
Low Impact Development ◽  
Green Roof ◽  
Computational Cost ◽  
Storm Water ◽  
Storm Event ◽  
Efficiency Coefficient ◽  
Storm Water Management ◽  
Permeable Pavements

Abstract This study aims to investigate the effectiveness of the low impact development (LID) practices on sustainable urban flood storm water management. We applied three LID techniques, i.e. green roof, permeable pavements and bioretention cells, on a highly urbanized watershed in Istanbul, Turkey. The EPA-SWMM was used as a hydrologic-hydraulic model and the model calibration was performed by the well-known Parameter ESTimation (PEST) tool. The rainfall-runoff events occurred between 2012 and 2020. A sensitivity analysis on the parameter selection was applied to reduce the computational cost. The Nash-Sutcliffe efficiency coefficient (NSE) was used as the objective function and it was calculated as 0.809 in the model calibration. The simulations were conducted for six different return periods of a storm event, i.e. 2, 5, 10, 25, 50 and 100-years, in which the synthetic storm event hyetographs were produced by means of the alternating block method. The results revealed that the combination of green roof and permeable pavements have the major impact on both the peak flood reduction and the runoff volume reduction compared to the single LIDs. The maximum runoff reduction percentage was obtained as 56.02% for a 10-years return period of a storm event in the combination scenario.

Sign in / Sign up

Export Citation Format

Share Document