This document discusses methods for waterproofing roads to increase their lifespan. It describes materials commonly used for waterproofing cement concrete roads and bituminous roads, including calcium stearate, petroleum wax emulsions, rubber crumbs, and paving fabrics. The document explains how these materials are added or applied to roads to fill cracks and prevent water infiltration that can cause potholes over freeze-thaw cycles. Waterproofing roads in these ways helps strengthen their structure, reduce repairs, and lower lifecycle costs while improving safety.
Evaluation of strength and performance characteristics of cold mix bitumen us...IJLT EMAS
An attempted has been made to evaluate the strength
and performance characteristics of cold mix bitumen using
reclaimed asphalt. An experimental result obtained from
laboratory testing of the physical and mechanical parameters of
the recycled material, in which the material from the existing
pavement layers were analyses. The air void content, Marshall
stability and flow of the recycled mixtures were investigated. The
tests were performed on the road base mixtures incorporating
reclaimed asphalt pavement (RAP) with bituminous emulsion. It
was observed that the reclaimed asphalt was having impact
strength of 10%, crushing strength of 8.2%. It is significant to
note that the reclaimed aggregate which was subjected to loading
condition already was still showing very good strength properties.
The maximum stability obtained from optimum binder content
was 384 kg which is a very good value for a cold mix made up of
reclaimed asphalt aggregate. The flow value obtained was also
5.06 mm as observed. The aim of the tests was to evaluate the
properties of the mixes in terms of the recycled aggregates.
Satisfactory results were obtained.
Evaluation of strength and performance characteristics of cold mix bitumen us...IJLT EMAS
An attempted has been made to evaluate the strength
and performance characteristics of cold mix bitumen using
reclaimed asphalt. An experimental result obtained from
laboratory testing of the physical and mechanical parameters of
the recycled material, in which the material from the existing
pavement layers were analyses. The air void content, Marshall
stability and flow of the recycled mixtures were investigated. The
tests were performed on the road base mixtures incorporating
reclaimed asphalt pavement (RAP) with bituminous emulsion. It
was observed that the reclaimed asphalt was having impact
strength of 10%, crushing strength of 8.2%. It is significant to
note that the reclaimed aggregate which was subjected to loading
condition already was still showing very good strength properties.
The maximum stability obtained from optimum binder content
was 384 kg which is a very good value for a cold mix made up of
reclaimed asphalt aggregate. The flow value obtained was also
5.06 mm as observed. The aim of the tests was to evaluate the
properties of the mixes in terms of the recycled aggregates.
Satisfactory results were obtained.
A Compatibility Study on Different Types of Cement and Plasticizerijsrd.com
It has long been a concrete technologist's dream to discover method of making concrete at the lowest possible water/cement ratio while maintaining a high workability. To a considerable extent this dream has been fulfilled with the advent of super plasticizers. It has added a new dimension to the application of admixtures with regards to production of high strength and flow able concretes. It is now possible to produce concrete with compressive strength of the order of 90Mpa (90 N/mm2). In the wake of energy conservation policy and diminishing supplies of high quality raw materials, there is a need to use marginal quality cements and aggregates for the production of concrete. In such instances the use of plasticizers/super plasticizers permits the production of concrete at low water/ cement ratios. We have taken ultra tech opc cement & coromandal ppc cement to find the compatibility by adding perma plast (plasticizer). The water cement ratio was maintained as 0.40 &0.45 for OPC & PPC respectively. To study the effect of these PP on various properties of concrete. The dosage of plasticizers/super plasticizers was measured as 1.5% for Perma plast for OPC & 1.3% for PPC by the weight of cement.
This slideset was prepared as a student group assignment, for a class on-Introduction to Construction Materials. The facts shown and data used are most relevant to the Indian Context. Prepared by- K. Hari Chandana, Sukirti Sah, Tanya Talwar, Rana Sarkar, Akriti Srivastava, Jitendriya Meher, Anshuman Abhisek Mishra : 1st Sem B. Arch, School of Planning & Architecture, Bhopal, MP, India
In this paper, the authors have discussed about the replacement of aggregates by discarded tyre rubber. This type of concrete is known as “Rubcrete”. It will cover the problems with the natural aggregate and also the reasons behind the use of rubber. The types of tyre rubber that are used, influence of size and content of rubber on concrete, effect of surface texture are discussed. Change in the properties of rubcrete over the conventional concrete, in hardened and fresh state such as slump, unit weight, air content, plastic shrinkage, mechanical strength been discussed. Paper covers the mechanisms behind the strength change, impact resistance, heat and sound insulation, freezing and thawing resistance of rubcrete. At the last, discussion on applications of rubcrete.
This power point presentation gives you information about the various chemicals, admixtures used to repair members and improve the properties of concrete. it gives you information about the various types of concrete. it gives you information about the various methods of repair.
This presentation has been prepared by civil engineering students of Tolani Foundation Gandhidham Polytechnic:
DHAWANI LAVISH
GAYAKWAD TEJAS
GORASIYA MAYUR
HIRANI YATIN
KATARMAL DARSHAN
LALWANI PIYUSH
MALI VISHNU
PATEL PARTH
PRAJAPATI JAYESH
PRAJAPATI KALPESH
Thank You!!
A Compatibility Study on Different Types of Cement and Plasticizerijsrd.com
It has long been a concrete technologist's dream to discover method of making concrete at the lowest possible water/cement ratio while maintaining a high workability. To a considerable extent this dream has been fulfilled with the advent of super plasticizers. It has added a new dimension to the application of admixtures with regards to production of high strength and flow able concretes. It is now possible to produce concrete with compressive strength of the order of 90Mpa (90 N/mm2). In the wake of energy conservation policy and diminishing supplies of high quality raw materials, there is a need to use marginal quality cements and aggregates for the production of concrete. In such instances the use of plasticizers/super plasticizers permits the production of concrete at low water/ cement ratios. We have taken ultra tech opc cement & coromandal ppc cement to find the compatibility by adding perma plast (plasticizer). The water cement ratio was maintained as 0.40 &0.45 for OPC & PPC respectively. To study the effect of these PP on various properties of concrete. The dosage of plasticizers/super plasticizers was measured as 1.5% for Perma plast for OPC & 1.3% for PPC by the weight of cement.
This slideset was prepared as a student group assignment, for a class on-Introduction to Construction Materials. The facts shown and data used are most relevant to the Indian Context. Prepared by- K. Hari Chandana, Sukirti Sah, Tanya Talwar, Rana Sarkar, Akriti Srivastava, Jitendriya Meher, Anshuman Abhisek Mishra : 1st Sem B. Arch, School of Planning & Architecture, Bhopal, MP, India
In this paper, the authors have discussed about the replacement of aggregates by discarded tyre rubber. This type of concrete is known as “Rubcrete”. It will cover the problems with the natural aggregate and also the reasons behind the use of rubber. The types of tyre rubber that are used, influence of size and content of rubber on concrete, effect of surface texture are discussed. Change in the properties of rubcrete over the conventional concrete, in hardened and fresh state such as slump, unit weight, air content, plastic shrinkage, mechanical strength been discussed. Paper covers the mechanisms behind the strength change, impact resistance, heat and sound insulation, freezing and thawing resistance of rubcrete. At the last, discussion on applications of rubcrete.
This power point presentation gives you information about the various chemicals, admixtures used to repair members and improve the properties of concrete. it gives you information about the various types of concrete. it gives you information about the various methods of repair.
This presentation has been prepared by civil engineering students of Tolani Foundation Gandhidham Polytechnic:
DHAWANI LAVISH
GAYAKWAD TEJAS
GORASIYA MAYUR
HIRANI YATIN
KATARMAL DARSHAN
LALWANI PIYUSH
MALI VISHNU
PATEL PARTH
PRAJAPATI JAYESH
PRAJAPATI KALPESH
Thank You!!
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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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.
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.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
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/
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
3. 3
INTRODUCTION
• Water proofing of roads is most important to increase the life of the
pavement.
• Potholes form in a road surface when water enters cracks within a road
surface. Freeze-thaw action widens these cracks, which weaken the
surface and eventually cause it to break open, leaving a
pothole. Potholes are responsible for many accidents, injuries and
vehicle damage every year, with local councils spending a large portion
of their budgets patching them.
• Water proof roads restricts potholes formation by preserving the
structural integrity of the highway surface. It improve the longevity of
roads.
4. 4
MATERIALS FOR WATERPROOFING
• The following are some materials or admixtures used globally for
waterproofing of cement concrete roads as well as bituminous
roads.
• For cement concrete roads:
1. Calcium stearate,
2. Aluminium stearate,
3. Butyl stearate,
4. Petroleum wax emulsion.
5. 5
MATERIALS FOR WATERPROOFING
• For bitumen road:
1. Petroleum wax emulsion mixed in bitumen,
2. Rubber crumbs,
3. Mastic asphalt polymer,
4. Paving fabrics.
• But to make the road pavement water proof ensure that the mix is
proper and provide enough camber to remove water from the road
surface. It is the cheapest and most economical method to make
pavement water proof.
6. 6
CALCIUM STEARATE
• Calcium stearate is produced by heating stearic acid and calcium
oxide: Ca(C18H35O2)2
• It can be added 0 to 2.85% by the weight of cement, the addition of calcium
stearate at 1 kg/m3 in self-compacting concrete (SCC) with 10% fly ash, the
mechanical and physical properties of SCC can be improved significantly.
• The compressive strength of the concrete when adding calcium stearate is
relatively stable. Moreover, the use of calcium stearate will clearly reduce the
water absorption capability of concrete. Also corrosion of concrete can be
reduced by using calcium stearate. Hence, calcium stearate is a good
candidate to improve the mechanical and physical properties of concrete.
8. 8
PETROLEUM WAX EMULSION MIXED IN BITUMEN
• Suitable waxes include petroleum waxes and synthetic waxes.
Petroleum wax, any wax obtained from petroleum,
including paraffin wax, and petroleum jelly. The most common
synthetic wax include polyethylene wax, polypropylene wax.
• Wax emulsions are of the oil in water type, with water being the
dispersion phase and wax being the dispersed phase. Most often,
these are petroleum wax.
• Waxes described above may be added to bitumen in an amount
of 0.1 to 20 wt %, preferably 0.5 to 10 wt %, more preferably 2.5
to 6 wt %.
9. 9
PETROLEUM WAX EMULSION MIXED IN BITUMEN
• The wax may be blended with the bitumen using any suitable method.
For instance, the wax may be added in divided form (eg as pellets, or
as a powder), to the bitumen. The bitumen may be in the molten state,
which is at a temperature sufficient to dissolve or disperse the wax.
Suitable temperatures range between 120 and 200°C.
• The wax may be blended with the bitumen, by
a) forming an emulsion of wax and water,
b) forming an emulsion of bitumen and water, and
c) mixing the emulsions formed in steps a and b.
The mixtures formed may then be mixed with aggregate, filler and/or
sand. The resulting blend may then be applied to a road surface.
11. 11
RUBBER CRUMBS
• The Government is aware of the problem of disposal of rubber tyres
and also benefits from its use in bituminous pavement courses. Normal
bitumen modified with crumb rubber & other additives has improved
performance compared to normal bitumen.
• Crumb rubber is usually recycled rubber which is obtained from waste
tyres. In the recycling process, the steel and the tyre cords are
removed and tyre rubber is separated. This is done either mechanically
or by using cracker mill. Crumb rubber is very suitable to be the used
as an additive in pavement because it has the characteristic that can
support the weakness of asphalt. It not only enhances the properties of
bitumen but also addresses serious environmental pollution issues.
12. 12
RUBBER CRUMBS
• Crumb rubber bituminous concrete showed improvement in strength and stability values.
It shows an increasing trend till 12 percent addition of rubber content. Addition of 12%
crumb rubber to 5% bitumen content gives satisfactory results and can be used for
construction of road pavements.
• It can be done by dry method and wet process. Dry method gives better performance
results as compared to Wet process.
• Overall, using the crumb rubber in bituminous mixture helps to:
1. Utilization of crumb rubber waste.
2. Water proofing of roads
3. Reduction in the use of bitumen by around 10%.
4. Increase in the strength and performance of the road.
5. Reduce the cost.
13. 13
PAVING FABRICS
• Since the late ’60s, paving fabrics have been used in overlay
systems of hot-mix asphalt—primarily to reduce or delay the rate
of reflective cracking through a new overlay.
• Waterproofing is now being viewed as a potential benefit of paving
fabrics. Although many engineers think the paving fabric system is
mainly used as a stress-relieving interlayer to retard reflective and
fatigue cracking, a principal function of the system is
waterproofing.“
14. 14
PAVING FABRICS
• To apply a fabric system, an existing asphalt pavement typically is first
milled to remove cracks. A leveling course of hot-mix asphalt (HMA) is
applied. Sprays about 1.1 liter/sq meter of hot asphalt tack coat onto
the surface. A non-woven fabric is laid into the tack coat and an HMA
overlay is placed on top of the fabric.
• The heat and pressure of the overlay reactivate the asphalt tack coat,
drawing it up into the fabric and bonding it to the overlay. The resultant
interlayer is a fairly thick asphalt-saturated fabric-reinforced layer.
• When paving fabric is placed between the layers of pavement, the
bond that is established between the old and new pavement become
the waterproof and stress absorbing layer that reduces reflective
cracking of the new asphalt surface layer
16. 16
Advantages of Water proof roads
• Increase in the strength and performance of the road.
• Improves Structural Durability.
• Reduces disruptive repair works.
• Reduces Cost of Repairs.
• Energy Efficient.
• Sustainable infrastructure.
• Reduction in no. of accident.