The document discusses pervious cement concrete pavement, which is designed to allow stormwater to infiltrate rather than run off. It can absorb 36,000 mm of water per hour through its porous structure. Pervious pavement is mostly used for low-traffic areas like sidewalks, driveways, and parking lots. The document outlines the materials, properties, design considerations, construction process, maintenance needs, and environmental benefits of pervious cement concrete pavement.
Pervious concrete (also called porous concrete, permeable concrete, no fines concrete and porous pavement) is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other sources to pass directly through, thereby reducing the runoff from a site and allowing groundwater recharge. ...
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presented by answer Muneer Ali
MSc in civil engineering - university of Baghdad
eng.anwer2012@gmail.com
009647710646107
Pervious concrete (also called porous concrete, permeable concrete, no fines concrete and porous pavement) is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other sources to pass directly through, thereby reducing the runoff from a site and allowing groundwater recharge. ...
pervious concrete cost vs concrete
pervious concrete cost
pervious concrete paving
pervious concrete driveway
pervious concrete companies
pervious concrete installation
pervious concrete patio
pervious concrete cost per yard
interesting civil engineering topics
civil engineering topics for presentation
civil seminar topics ppt
civil engineering seminar topics 2018
best seminar topics for civil engineering
seminar topics pdf
seminar topics for mechanical engineers
seminar topic for civil engineering pdf
pervious concrete used in pavement presentation
presented by answer Muneer Ali
MSc in civil engineering - university of Baghdad
eng.anwer2012@gmail.com
009647710646107
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.
Here, I attach a PowerPoint presentation created by me for a competition held by UltraTech. Have a look at this and feel free to share your views with me.
Quality Control in Concrete and Durability factors : An overviewbybyRAJESH PRASAD,IRSE, CPM/M, RVNL. KOLKATA. An interesting and informative presentation....
perpetual pavement is one of the new technology in the construction field of roads in these we discussed about how to construct, and what is the step by step process to be followed and advantages and dis advantages of perpetual pavements ,case study also we discussed
Pervious Concrete is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other sources to pass directly through, thereby reducing the runoff from a site and allowing groundwater recharge.
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.
Here, I attach a PowerPoint presentation created by me for a competition held by UltraTech. Have a look at this and feel free to share your views with me.
Quality Control in Concrete and Durability factors : An overviewbybyRAJESH PRASAD,IRSE, CPM/M, RVNL. KOLKATA. An interesting and informative presentation....
perpetual pavement is one of the new technology in the construction field of roads in these we discussed about how to construct, and what is the step by step process to be followed and advantages and dis advantages of perpetual pavements ,case study also we discussed
Pervious Concrete is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other sources to pass directly through, thereby reducing the runoff from a site and allowing groundwater recharge.
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.
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
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/
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
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Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
2. Pavements
Road transport is considered to be one of the cost-effective and
preferred modes of transport for both freight and passengers.
India has an extensive road network of 4.24 million km– the
second largest in the world.
The National Highways have a total length of 70,934 km and
serve as the arterial road network of the country.
While Highways/ Expressways constitute only about 2 percent of
the length of all roads, rest are state highways, major district
roads, district roads and rural and other roads, which are
considered as low volume roads.
Rural roads consist over 85 percent of the road network.
4. Pervious pavement
Pervious pavements are designed to infiltrate
stormwater, reduce peak flows and promote
groundwater recharge.
Pervious pavement systems consist of a surface
with joints and/or openings that will freely allow
water to infiltrate the system.
On an average, it can take 36,000 mm water per hour.
The level of water absorption may vary from country-
to-country based on its climatic conditions.
It can take more than 100-year storm and even if it
gets blocked with dirt, it can absorb 95 per cent of the
water.
5. Applications of pervious pavement
pervious concrete pavement is mostly used in low
volume low speed roads, with personal vehicle at
a speed 50 km/hour or less.
Such examples for its application includes:
• Sidewalks
• Parking lots
• Walkways
• Driveways
• Shoulders
• Residential Streets
8. Pervious cement concrete
pavement.
A mixture of coarse aggregate, Portland cement,
water and little or no sand.
Controlled amounts of water and cementitious
materials creates a paste that forms a thick coating
around aggregate particles without flowing off
during mixing and placing
Has a 15-25% void structure, hence lightweight.
10. Materials Proportions
Cementitious materials 270-415
Narrowly graded aggregate
(gravel/crushed stone)
1190-1480
w/c ratio 0.28-0.35 (with chemical admixtures)
0.34-0.40 (without chemical
admixtures)
Cementitious materials/Aggregate
ratio
1:0.21-1:0.25
Fine aggregate: Coarse aggregate
ratio
0 to 1:1
Polypropylene fiber (optional when
no fine aggregate is present)
0.1% by volume or 0.9 kg/𝒎 𝟑
11. Properties
1. Gradation of aggregate
Aggregate gradings used in pervious concrete
are typically either single-sized coarse aggregate
or
grading 3/4 and 3/8 in (between 19 and 9.5 mm).
A wide aggregate grading is to be avoided as
that will reduce the void content of the pervious
concrete.
12. Contd.
2. Compressive strength
Falls in the range of 3.5 MPa to 28 Mpa .
Typical values are about 17 Mpa.
3. Flexural strength
Ranges between about 1 and 3.8 Mpa.
Influenced by degree of compaction, porosity,
and the aggregate-to-cement (A/C) ratio.
13. Contd
4. Density
Depends on
-The properties and proportions of the
materials used
-Compaction procedures used in the
placement
In-place densities in the order of 1600 to 2000
kg/m3
(falls in upper range of lightweight concretes)
14. Contd.
5. Durability: freeze-thaw resistance
It depend on the saturation level of the voids in
the concrete.
at the time of freezing Voids are saturated,
complete freezing can cause severe damage.
6. Abrasion resistance
Open and rough structure- abrasion and raveling
of aggregate on the surface can be a problem
Hence Highways are generally not suitable for
pervious concretes
15. Design considerations of pervious
cement concrete pavement
Two primary considerations enter into the
determination of the thickness of pervious
concrete pavements.
1) hydrologic design to meet environmental
requirements.
2) structural design to withstand the
anticipated traffic loading applications.
16. Construction
Sub grade –can be native material or imported
fill and properly compacted to achieve Density
90-95%.
surface -Uniform and stable
Sub base – clean gravel or crushed stone.
Sub grade and sub-base - moistened before
placement of pervious concrete layer.
Final layer –compacted by manually operated
roller
17. Mixing and transportation
Conventional concrete mixing equipment is
used - mixing times may be extended.
Cement may be replaced by about 10-30%
of fly ash, 20-50% of blast furnace slag and
5% of silica fume.
Discharged completely within one hour after
initial mixing.
Retarding admixtures - increase the
discharge time
18. Placement
Placement - continuous, spreading – rapid.
Strike off about 15 to 20 mm above the forms.
Commonly used- mechanical vibrating screed,
manual screeds.
Vibrating ScreedManual Screed
19. Consolidation
Consolidation-by
rolling over the
concrete with a steel
roller
Because of rapid
hardening and high
evaporation rates,
delays in
consolidation can
cause problems
Steel Roller
20. Curing
As pervious concrete
pavements do not bleed,
they have a high tendency
for plastic shrinkage
cracking.
Recommended curing
procedure -fog misting
followed by plastic
sheeting for 7 days.
21. Maintenance
Consists of prevention of
clogging and surface
raveling.
Cleaning by
Power blowing
Pressure washing
Broom sweeping
Raveling
Broom sweeping
22. Environmental benefits
Reduces storm water runoff.
Replenishes water tables and aquifers.
Eliminates - detention ponds - other costly
storm water management practices.
Allows for more efficient land development.
Prevents warm and polluted water from
entering streams.
23. Safety benefits
Reduces storm water runoff.
Replenishes water tables and aquifers.
Eliminates - detention ponds - other costly
storm water management practices.
Allows for more efficient land development.
Prevents warm and polluted water from
entering streams.
24. Pervious concrete projects
Parking for prime outlets mallin
Williamsburg, Virginia (7.6acres)
Walkway in Beijing, Chinabuilt
for 2008 Olympics