This document is prepared for our major project submission for B.tech degree. the project deals with improvement of compressive strength of pervious concrete with out affecting its permeability property much.
An Experimental Paper on Compressive Strength of Pervious Concreteijtsrd
Pervious concrete has been in use in many countries over more than a century. Its higher porosity helps in percolating rain water directly to ground and thereby helps in recharging groundwater aquifer. In this study, pervious concrete of sizes of 6.3mm size aggregate were prepared with different water cement ratios to find the compressive strength. The purpose of this project is to analyze the feasibility of producing highly sustainable no fine concrete mixtures and evaluating the effect of W c ratio on the properties of pervious concrete. Porous concrete is produced by using ordinary Portland cement, coarse aggregates, and water. This concrete is tested for its property compressive strength. The results showed that the water cement ratio showed significant effect on compressive strength of Pervious concrete. S. Suryasri | Mr. K. S. B. Prasad "An Experimental Paper on Compressive Strength of Pervious Concrete" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019, URL: https://www.ijtsrd.com/papers/ijtsrd28121.pdf Paper URL: https://www.ijtsrd.com/engineering/transport-engineering/28121/an-experimental-paper-on-compressive-strength-of-pervious-concrete/s-suryasri
Improving the Performance of Recycled Aggregate Pervious Concrete via Cement ...Patrick Barnhouse, E.I.T
A preliminary study of high porosity pervious concrete for non-pavement applications. Also discussed is the feasibility of including recycled aggregate and the photocatalyst titanium dioxide in the mix design.
This document is prepared for our major project submission for B.tech degree. the project deals with improvement of compressive strength of pervious concrete with out affecting its permeability property much.
An Experimental Paper on Compressive Strength of Pervious Concreteijtsrd
Pervious concrete has been in use in many countries over more than a century. Its higher porosity helps in percolating rain water directly to ground and thereby helps in recharging groundwater aquifer. In this study, pervious concrete of sizes of 6.3mm size aggregate were prepared with different water cement ratios to find the compressive strength. The purpose of this project is to analyze the feasibility of producing highly sustainable no fine concrete mixtures and evaluating the effect of W c ratio on the properties of pervious concrete. Porous concrete is produced by using ordinary Portland cement, coarse aggregates, and water. This concrete is tested for its property compressive strength. The results showed that the water cement ratio showed significant effect on compressive strength of Pervious concrete. S. Suryasri | Mr. K. S. B. Prasad "An Experimental Paper on Compressive Strength of Pervious Concrete" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019, URL: https://www.ijtsrd.com/papers/ijtsrd28121.pdf Paper URL: https://www.ijtsrd.com/engineering/transport-engineering/28121/an-experimental-paper-on-compressive-strength-of-pervious-concrete/s-suryasri
Improving the Performance of Recycled Aggregate Pervious Concrete via Cement ...Patrick Barnhouse, E.I.T
A preliminary study of high porosity pervious concrete for non-pavement applications. Also discussed is the feasibility of including recycled aggregate and the photocatalyst titanium dioxide in the mix design.
Influence of Water Cement Ratio and The Size of Aggregate on The Properties O...IRJESJOURNAL
Abstract: Pervious concrete is a tailored-property concrete with high water permeability which allow the passage of water to flow easily through the existing interconnected large pore structure which is obtained by eliminating the sand from the normal concrete mix. This study investigates the effect of water cement ratio and size of aggregate on the property of pervious concrete. Concrete mixes with five different water cement ratio (0.28, 0.30, 0.32, 0.33, 0.34) and two different single sized aggregate (10mm and 12.5mm) were prepared to find an optimum mix yielding the highest strength but the strength of no-fine concrete is lower that of normal concrete. It was found that the compressive strength increases with increase in water/cement ratio where the permeability decreases. Both the permeability and compressive strength increases as the size of aggregate increases.
Influence of Water Cement Ratio and The Size of Aggregate on The Properties O...IRJESJOURNAL
Abstract: Pervious concrete is a tailored-property concrete with high water permeability which allow the passage of water to flow easily through the existing interconnected large pore structure which is obtained by eliminating the sand from the normal concrete mix. This study investigates the effect of water cement ratio and size of aggregate on the property of pervious concrete. Concrete mixes with five different water cement ratio (0.28, 0.30, 0.32, 0.33, 0.34) and two different single sized aggregate (10mm and 12.5mm) were prepared to find an optimum mix yielding the highest strength but the strength of no-fine concrete is lower that of normal concrete. It was found that the compressive strength increases with increase in water/cement ratio where the permeability decreases. Both the permeability and compressive strength increases as the size of aggregate increases.
The compressive strength, flexural strength, and split tensile strength of Reactive Powder concrete are all
investigated in this study (RPC). The lack of ductility in ordinary concrete is considered a key concern in this
research. RPC is being explored as a solution for the aforementioned challenge as the building industry's
technology advances. Cement, sand, water, admixture, and superplasticizer are all included in the RPC. The
reactive powder concrete mixture is made by changing the percentages of super plasticizer (2%, 3% and 4%),
silica fumes (10%, 20%, and 30%), while maintaining the dose of quartz powder constant. At the outset of this
study, compressive strength, flexural strength, and split tensile strength targets of 140-160Mpa, 20-30Mpa, and
15-20Mpa were set. However, due to a change in material qualities that were locally accessible and of low
quality, the results produced after the investigation were unsatisfactory to get the findings, the RPC was mixed,
cast, cured, and tested in the concrete laboratory using three different mix proportions.
150mmX150mmX150mm cube, 500mmX100mmX100mm beam, and 150mm diameter and 300mm height
cylinder are all made of fresh concrete. The casted RPC is then cured in a water tank at room temperature for 7,
14, and 28 days before being oven dried for 24 hours at 60 degrees Celsius. The final results were documented
and discussed, as well as conclusions and recommendations based on the findings.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Immunizing Image Classifiers Against Localized Adversary Attacks
Measurement of Infiltration Rates and the Rejuvenation of Pervious Concrete Pavements
1. Measurement of Infiltration Rates
and the Rejuvenation of Pervious
Concrete Pavements
Manoj Chopra, Ph.D., P.E.
Professor of Civil Engineering
University of Central Florida
chopra@ucf.edu
2. University of Central Florida
Outline
Introduction
Installation of Pervious Concrete Pavement
Embedded Ring Infiltrometer (ERIK)
Infiltration Testing – Pre and Post Rejuvenation
Sustainable Porosity (System and Component)
Infiltration Results
Rejuvenation Results
Conclusions
3. University of Central Florida
Background
Increased impervious surfaces linked to decline in
surface water quality
Nutrients
Heavy metals
Hydrocarbons
Using pervious/permeable pavements in low traffic load
areas can help with
Groundwater recharge
Pollutant reduction
Land-use reduction
Water harvesting
4. University of Central Florida
Overview
US EPA Recognizes Pervious Concrete as a BMP for
Stormwater Runoff
Are being Considered as a part of the State Unified
Stormwater Rule in Florida to provide Potential Credit
Open structure of PC may get clogged due to
entrapment of sediment
Initial Scope of UCF Research
Pervious Concrete Pavement
Expanded Scope
Pervious Concrete Pavement (continued)
Pervious Pavers – 2 Types
Flexipave® - Recycled Rubber Tires
Pervious Asphalt
Recycled Glass Pavers
Permeable Grout Paving Systems – 9 Types
4
5. University of Central Florida
Research Need
To collect data on long term hydraulic performance of
pervious/permeable systems
To develop a reliable, non-destructive infiltration
monitoring method
To determine effective porosity
To determine in-situ infiltration data for clogged and
rejuvenated systems
To determine strength data for several systems on the
market
To determine impact on water quality
6. University of Central Florida
EVALUATION OF EXISTING
PERVIOUS CONCRETE
INSTALLATIONS
Chopra, M, Kakuturu, S., Ballock, C, Spence, J and Wanielista, M. “Determination of the
Infiltration Rates and the Effect of Rejuvenation Methods for Pervious Concrete Pavements, J.
of Hydrologic Engineering, ASCE (Special Issue on LID), Volume 15, No. 6, pp. 426-433, 2010.
7. University of Central Florida
Initial Concept Embedded Single
Ring Infiltrometer
Double Ring Infiltrometer on the surface of
Pervious Pavement was found to Over-predict
Rates due to Preferred Lateral Migration of
Water
Led to Concept of Single Embedded Infiltrometer
For Study of Existing Installations, Coring would
be required followed by installing a strong ring
12 inch Diameter (11-5/8” ID) with 11-Gauge
Steel Ring was Used
8. University of Central Florida
Embedded Single Ring Infiltrometer
11-5/8”
11-Gauge
Steel
Subsoil
Pervious
Concrete
Core
20”
6”
Advantages
1. One dimensional flow (no horizontal flow between pavement and soil)
2. Representative of site existing conditions assuming same soil types,
and concrete conditions.
Version 1.0 Late 2003
9. University of Central Florida
Field Site Reconnaissance
Completed Field Sites
Vet Office in Sanford
FCPA Office in Orlando
Sunray StoreAway – Lake Mary
Strang Communications – Lake Mary
FDEP Office – Tallahassee
Other Regional Field Sites
Greenville, South Carolina
Atlanta, Georgia
Savannah, Georgia
Charlotte, North Carolina
13. University of Central Florida
Field Test Results
Test Location
Avg. Concrete
Rate [in/hr]
(Range)
Avg. Soil
Rate [in/hr]
Limiting
Factor
Site 1 – Area 1 25.7 (19 – 32.4) 34.5 Concrete
Site 1 – Area 2 3.6 (2.8 – 4.5) 14.8 Concrete
Site 2 5.9 (5.3 – 6.6) 5.4 Soil
Site 3 14.4 (2.1 – 22.5) 21.5 Concrete
Site 4 – Area 1 2.1 (0.7 – 4.5) 15.6 Concrete
Site 4 – Area 2 2.9 (0.9 – 4.9) 15.6 Concrete
Site 5 3.7 (1.7 – 5.4) 8.8 Concrete
*Age of concrete varies from 10 to 20 years (except for Site 4 – Area 1).
14. University of Central Florida
Control Tanks for Evaporation and
Water Quality Testing
15. University of Central Florida
Establishing a Pervious Pavement
Test Site at Stormwater Academy
Pervious Pavements
Pervious Concrete
Recycled Rubber
Recycled Glass
Porous Aggregates
Permeable Paver
Pavements
Removable Filler
No Filler
Permanent Permeable
Grout Joints
23. University of Central Florida
IN SITU PERMEABILITY
MEASURING DEVICE
Gogo-Abite, I, Chopra, M., Hardin, M., Wanielista, M. and Stuart, E., “In situ
Permeability Determination Device for Porous Pavement Systems”, J. Irrigation
and Drainage Engineering, ASCE, http://dx.doi.org/10.1061/(ASCE)IR.1943-
4774.0000757. May 2014.
24. University of Central Florida
ERIK Device – Version 2.0
In-Situ, Nondestructive,
Replicable
Constant Head Test
Measures Pavement Infiltration
Rates
Two types
System Recovery Type (4-inch
embedment into parent soils)
Maintenance Indicator Type (2-inch
embedment into sub-base layer)
25. University of Central Florida
Two Types of ERIK Device
Long-Ring ERIK
How fast water enters
parent soils
Evaluates system recovery
Florida Water Management
Districts require a minimum
of 2 in/hr
Short-Ring ERIK
How fast water enters
pavement system
Evaluates degree of surface
layer clogging
26. University of Central Florida
Typical Cross Sectional View of
Embedded ERIK Device
(a)
(b)
152.4 mm pervious concrete
254 mm coarse sand (or Bold & Gold)
Filter fabric
Compacted subgrade
(90–95% compaction effort)
20.7 MPa concrete curb
(0–152 mm above pavement)
0% slope
Adjacent
landscaping
Long-ERIK terminated 100
mm into subgrade
152.4 mm pervious concrete
254 mm coarse sand (or Bold & Gold)
Filter fabric
Compacted subgrade
(90–95% compaction effort)
20.7 MPa concrete curb
(0–152 mm above pavement)
0% slope
Adjacent
landscaping
Short-ERIK terminated
25 mm into subbase
31. University of Central Florida
Views of Measuring Unit of the ERIK
Device
Graduated
cylinder
Testing collar
Control valve
32. University of Central Florida
ERIK Device Test Results
Reproducibility and
Repeatability
Both Short-ring and Long-
ring ERIK devices
Coefficient of variation
(COV) of test results
96% of COV were less
than 7%
100% of COV were less
than 10%
34. University of Central Florida
Testing Procedure
Measure infiltration rate of newly installed
pavement
Clog pavement test section with 2 soil types
Sandy soil
Limestone fines
Measure infiltration rate of clogged pavement
Rejuvenate pavement with vacuum truck
Measure infiltration rate of rejuvenated
pavement
45. University of Central Florida
Pervious Concrete Pavements:
Long-Ring ERIK North Infiltrometer
46. University of Central Florida
Pervious Concrete Pavements:
Long-Ring ERIK South Infiltrometer
47. University of Central Florida
Pervious Pavements: Long-Ring
ERIK
26
13
17
0
5
10
15
20
25
30
New Install Average
Infiltration Rate [in/hr]
Clogged Average
Infiltration Rate [in/hr]
Rejuvenated Average
Infiltration Rate [in/hr]
InfiltrationRate[in/hr]
Long-Ring ERIK Results for Pervious Pavements
48. University of Central Florida
Pervious Concrete Pavements:
Short-Ring ERIK East Infiltrometer
49. University of Central Florida
Pervious Concrete Pavements:
Short-Ring ERIK West Infiltrometer
50. University of Central Florida
Pervious Pavements: Short-Ring
ERIK
1,432
410 475
1
10
100
1000
10000
New Install Average
Infiltration Rate [in/hr]
Clogged Average
Infiltration Rate [in/hr]
Rejuvenated Average
Infiltration Rate [in/hr]
Infiltrationrate[in/hr]
Short-Ring ERIK Results for Pervious Pavements
51. University of Central Florida
Pervious Pavements: Long-Ring
ERIK
0
5
10
15
20
25
30
Pervious
Concrete
Recycled
Rubber
Pavement
Recycled Glass
Pavement
Permeability[in/hr]
Long-Ring ERIK Results for Pervious
Pavements
New Average Infiltration
Rate [in/hr]
Clogged Average
Infiltration Rate [in/hr]
Rejuvenated Average
Infiltration Rate [in/hr]
52. University of Central Florida
Pervious Pavements: Short-Ring
ERIK
1
10
100
1000
10000
Pervious
Concrete
Recycled
Rubber
Pavement
Recycled
Glass
Pavement
Permeability[in/hr]
Short-Ring ERIK Results for Pervious
Pavements
New Average Infiltration
Rate [in/hr]
Clogged Average
Infiltration Rate [in/hr]
Rejuvenated Average
Infiltration Rate [in/hr]
56. University of Central Florida
Results
EFFECTIVE POROSITY
S/NO. MATERIAL Pre-Loading Post-Loading
1 Pervious concrete 27.2 23.4
2 Flexi-pave 31.1 10.4
3 Permeable Pavers PP 9.1 19.6
4 Pea rock (#89) 36.5 12.5
5 HPF 39.0 15.0
6 Crushed concrete (#57) 41.4 1.4
7 Limestone (#4) 45.2 3.0
8 Granite (#4) 43.6 3.0
57. University of Central Florida
Recommended Effective Porosity
Values
Type Sub-Type
Sustainable Void
Space (%)
Pervious Concrete 20
Flexi-pave™ 20
Pervious Pavers
Old Castle 10
Hanson 10
#4 Rock
Limestone 30
Granite 30
#57 Recycled Crushed Concrete 25
#89 Pea Rock 25
58. University of Central Florida
DESIGN AID SOFTWARE
Available for Download at
www.stormwater.ucf.edu
60. University of Central Florida
Slide #60
Example Problem #1
For six (6) inches of pervious concrete * placed directly on top of the parent soil
Pull down menu for the type
of pervious pavement
61. University of Central Florida
Slide #61
Example Problem #1
For six (6) inches of pervious concrete * placed directly on top of the parent soil
If a storage reservoir is
proposed, enter the
appropriate thickness of the
material(s)
62. University of Central Florida
Slide #62
Example Problem #1
For six (6) inches of
pervious concrete *
placed directly on
top of the parent
soil, with a 7.5 inch
rainfall depth:
System
Storage (S’)
= 0.9”
CN = 92
Rational
“C” = 0.85
63. University of Central Florida
Slide #63
Example Problem #1
Six (6) inches of pervious concrete * placed directly on top of the parent soil.
The FDOT Drainage Hydrology Handbook is available at:
http://www.dot.state.fl.us/rddesign/dr/Manualsandhandbooks.htm
From the previous
slide, the
Rational “C” = 0.85
For a 25 year design storm,
the FDOT range for Rational
“C” values are:
1.1 x 0.75 = 0.83
1.1 x 0.95 = 1.05 (use 1.0)
Similar results for
sandy soils
65. University of Central Florida
Pervious Pavements (PC) –
Infiltration Rates
Long-Ring ERIK – infiltration rate for the
pervious pavement systems ≥ 2.0 in/hr.
Short-Ring ERIK
All pervious pavement systems showed reduction
after clogging
All pervious pavement systems showed increase after
rejuvenation to varying degrees
Pervious Concrete showed a 67% reduction in
infiltration rate
66. University of Central Florida
PC Pavements – Infiltration Rate
Vacuum sweeping was shown to be an effective
way to rejuvenate porous pavement systems
Pavement surface moisture condition had
significant effect on the performance at
vacuuming
Dry soil – Vacuum worked well
Damp soil – Vacuum not effective
Saturated soil – Vacuum most effective
67. University of Central Florida
PC Pavements - Porosity
Porosity plays an important role in designing porous
pavement systems
Total porosity not appropriate to use for design purposes
Subbase aggregates will rarely have no moisture present
As systems age, sediment will begin to accumulate and
decrease void space
Sustainable porosity values are recommended for design
Average of effective porosity for clean sample and effective
porosity for a sediment loaded sample
Closer to operating conditions while providing safety factor