scholarly journals Infiltration Rate of Pervious Concrete on Street Curb Application

The street curb and stormwater inlets are among the component often found on the road which serve as part of the urban stormwater drainage system. They act as a stormwater removal and discharge it into the underground drainage system. However, the current stormwater inlet practiced in Malaysia has limitations which often cause water ponding and consequently lead to road flooding. Rather than improving the performance of stormwater inlet, the flow interception and rate of stormwater removal may be enhanced by introducing a new technology called the pervious curb. It isto be made of pervious concrete which provide an ability to allow water to pass through it.This paper attempts to adapt the existingtwo pervious concrete mix design and applied it into the so-called pervious curb. Herein, a newly designed infiltration rate test was used to test the pervious concrete performance under the effect of infiltration through side surface of the concrete curb. While doing so, the infiltration rate of the pervious concrete will be investigated under varying slopes. Results showed that the infiltration rate is quite high and the rate of infiltration increases as the inclination gutter increases. Thus, it is proven that the new infiltration rate test is applicable and can be used for other similar applications. Furthermore, the test has significantly revealed that the pervious concrete has high potential in enhancing flow interception and able to reduce water ponding as a street curb.

Eng ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 153-166
Author(s):  
Lewis Cole ◽  
Ramez Bakheet ◽  
Shatirah Akib

Flooding is one of the climatic change consequences that has become a dangerous threat to many coastal cities. Pervious concrete is considered a solution to decrease rainwater runoff and mitigate flood effects, as it allows water to percolate through the ground and prevent possible damage. Using waste products as aggregates in pervious concrete not only exploits waste materials and makes it valuable but also reduces the amount of this waste ending in the landfill or harming the environment, and it decreases the demand for natural resources. Infiltration rate test and compressive strength tests were conducted to investigate the effect of using waste plastic and/or recycled rubber as concrete coarse aggregates with different ratios (5%, 10%, 15%, 20%, and 25%) on the pervious concrete. The results showed that increasing the waste materials in concrete decreased the compressive strength for all ratios while increased the infiltration rate values.


Author(s):  
Alen Joseph Samuel ◽  
Shoney Sebastian

The verification of vehicle documents is an important role of transport department which is rising day by day due to the mass registration of the vehicles. An automated vehicle verification system can improve the efficiency of this process.  In this paper, we propose an IOT based vehicle verification system using RFID technology. As a result, the vehicle checking which is done now manually can be replaced by automation. There is a loss of a significant amount of time when the normal vehicle checking is done manually. The proposed system will make this process automated. The present verification process is using inductive loops that are placed in a roadbed for detecting vehicles as they pass through the loop of the magnetic field. Similarly, the sensing devices spread along the road can detect passing vehicles through the Bluetooth mechanism. The fixed audio detection devices that can be used to identify the type of vehicles on the road. Other measurements are fixed cameras installed in specific points of roads for categorising the vehicles. But all these mechanisms cannot verify the documents and certificates of the vehicles. In our work, we have suggested an algorithm using RFID technology to automate the documentation verification process of the vehicles like Pollution, Insurance, Rc book etc with the help of RFID reader placed at road checking areas. This documents will be updated by the motor vehicle department at specific periods.


Author(s):  
B. B. Teltayev ◽  
G. G. Izmailova ◽  
M. Zherebitskiy

The article represents the results for investigation of a new technology of complex soil consolidation and stabilization and reuse of the material from stripping of the existing roads (cold recycling technology) with portlandcement and enzyme agent Roadzyme (USA), which allows reducing the energy costs significantly and improving ecological situation. Cold recycling has a number of significant advantages before other means of reconstruction. The absence of environmental pollution is due to the complete use of the material of the old pavement. There is no need in disposal sites, and the volume of the new delivered materials is the minimum one and reduces the area of contamination, which is certain during opening of new borrow-pits and rock quarries. Transportation is very small, therefore the consumption of the energy is considerably reduced, as well as devastating impact of vehicles on the road network. Effect of the use of the agent “Roadzyme” is based on the activation of physics and chemical processes, which increase the strength, water resistance and frost resistance of the consolidated soils and materials, reducing material consumption at provision of the required elasticity modulus for pavement structure due to reduction of the thickness for pavement layers, the use of local materials and saving of binders and inert materials. The decrease is noted for the stiffness of the materials, strengthened by complex method (binder with the agent “Roadzyme”), compared to the treatment only with the binder, which allows forecasting the increase of the crack resistance.


MATICS ◽  
2018 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Raphael AKINYEDE

<p class="Text"><strong>—<em> </em></strong>In Vehicular Ad-Hoc Networks (VANETs), wireless-equipped vehicles form a network spontaneously while traveling along the road. The direct wireless transmission from vehicle to vehicle makes it possible for them to communicate even where there is no telecommunication infrastructure; this emerging new technology provide ubiquitous connectivity to vehicular nodes while on the move, The main idea is to provide ubiquitous connectivity to vehicular nodes while on the move, and to create efficient vehicle-to-vehicle communications that enable the Intelligent Transportation Systems (ITS). This is achieved by allowing nodes within certain ranges to connect with each other in order to exchange information. Since accident happens in split seconds, to avoid communication inefficiency, there is need for this information to get to the intended vehicle on time. To solve this problem, this work models each vehicle in a chain of others and how it responds to the traffic around it using Microscopic (also known as car-following) method for modeling traffic flow; driver- to-driver and driver-to-road interactions within a traffic stream and the interaction between a driver and another driver on road were considered. The essence of this modeling is to determine the minimum response time required for a vehicle in VANET to respond and communicate situations on the road. A simulated scenario was carried out for two vehicles, a leading vehicle and following vehicle. The result shows that with an average of 32 meters apart with average difference in velocity of   1.23m/s, a minimum of 0.9secs is required for efficient situation response communication to ensue between them.</p>


2018 ◽  
Vol 7 (3.33) ◽  
pp. 139
Author(s):  
Bachyun Kim ◽  
Yoseop Woo ◽  
Iksoo Kim

This paper deals with a warning system for the safety of pedestrians/pedal-cyclists against electric-powered driving means including hybrid/PHEV/EV/FCEV and electric wheel on minor roads. These roads are a subset of connected-vehicle communication network(CVCN). The fatalities of pedestrians/pedal-cyclists declined recently compared to the early 2000s, but fatality rate of vehicle accidents is increasing. Clearly, this phenomenon will continue because of the increasing number of virtually silent hybrid/PHEV/EV/FCEV and electric wheels on the road.The hybrid/PHEV/EV/FCEV such as green electric-powered ones that can reduce environmental pollution are much more dangerous than traditional vehicles to pedestrians/pedal-cyclists on minor roads. The main risk factor of the electric-powered vehicles is that they are very quiet on the road because of the use of electric motor instead of engine. Thus, the safety warning system that can notify pedestrians/pedal-cyclists the dangerous approaches of vehicles from their behind have to be provided on minor roads.The proposed framework for safety warning system using multicast informs pedestrians/pedal-cyclists through smartphone when electric powered driving means are closing from their behind on minor roads. This is a new technology that uses vibration or sound of smartphone instead of artificial noise generation which is equipped to the electric powered driving means recently.  


2020 ◽  
Vol 3 (1) ◽  
pp. 78-91
Author(s):  
Keshav Basnet ◽  
Krishna Chettri ◽  
Ganesh Parajuli ◽  
Achyut Bhandari

The immense increase of the structural activity which decreases the pervious area of the city is alarming danger situation pertaining to drainage. Urbanization and improved area of imperviousness are the major contributors that make the existing drainage network insufficient while inadequate maintenance and haphazardly throwing rubbish on the road and drain are other issues. The major objective of the study is to analyze the hydrological and hydraulic status of the urban storm water drainage system of the major area of Pokhara City of Nepal and to compare the calculated result with existing situation, using Rehm tools HYKAS and GraPS under AutoCAD environment. The results of this study show that the size of the existing road side drains is inadequate to handle all the surface runoff. It is found that the existing situation of the drainage system is quite poor and need to be redesign or reconstruct immediately. The hydraulic load of almost all the conduit is beyond the limit assigned. The hydraulic design of the most of the drainage conduit is inadequate and re-design of the drain is essential based upon accurate flow estimation methods. This study concludes that the applicability of the current drainage system is quite poor and needs to make certain changes with their construction immediately in order to avoid any danger and adverse effect possessed by surface flooding over the road surface and other paved surfaces. The surface runoff is significantly increased compared to the situation before the construction of existing drainage system and therefore for the appropriate storm water management of the urban area of Nepal, it is critical to design the drainage system based on both hydrological and hydraulic analyses considering reliable data.


Author(s):  
Ardiansyah Ardiansyah ◽  
M. Gasali M.

Abstract Sungai Beringin Street is a road that has the status of a provincial road, as a connecting road between the capital city of the District of Tembilahan with other districts such as Batang Tuaka Subdistrict, Gaung Serka Children, Gaung and its surroundings. Jalan Sungai Beringin is one of the most densely populated areas of vehicle traffic experiencing flooding problems that regularly occur during the rainy season, because the condition of the drainage system is not well connected and there is no drainage channel on the road. Inundation will affect traffic for vehicles using the road to carry out daily activities, so that it can allow a greater disaster to harm the local community both property and life. According to Suripin, (2004; 7) drainage originating from English Drainage means to drain, drain, dispose of, or divert water. Drainage in the field of civil engineering, can be defined as a technical action to reduce excess water, both from rainwater, seepage, or excess irrigation water from an area / land, so that the function of the area / land is not disturbed. Drainage can also be interpreted as an effort to control the quality of groundwater in relation to salinity, so drainage involves not only surface water but also groundwater. Planning of drainage system for Parit 16 road with dimensions of channel height (h) 0.85 meters, channel width (b) 1.00 meters with slope of 0.04 and safety height of 0.65 meters while trench road 17 with high dimensions of the channel ( h) 0.95 meters, channel width (b) 1.00 meters with a slope of 0.04 and height of 0.69 meters construction of this drainage system in order to accommodate the rainwater discharge on the Beringin River which causes flood inundation during the rainy season . From the results of analysis of calculations, the total cost of the Budget Plan is obtained. The cost of constructing the ditch 16 drainage channel is = Rp. 3,219,594,000.00 and drainage ditch 17 drainage channel = Rp. 3,859,080,000.00.   Abstrak Jalan Sungai Beringin adalah jalan yang berstatus jalan Propinsi, sebagai jalan penghubung antara Ibu Kota Kabupaten Kecamatan Tembilahan dengan Kecamatan lain seperti Kecamatan Batang Tuaka, Gaung Anak Serka, Gaung dan sekitarnya. Jalan Sungai Beringin merupakan salah satu wilayah jalan lalu lintas kendaraan yang cukup padat mengalami masalah banjir genangan air yang rutin terjadi pada saat musim hujan, dikarenakan kondisi sistem drainase belum terhubung dengan baik dan tidak adanya saluran drainase pada ruas jalan tersebut. Genangan akan mengangu lalu lintas bagi kendaraan yang mengunakan ruas jalan tersebut untuk melakukan aktivitas sehari-hari, maka dapat memungkinkan terjadi bencana yang lebih besar hingga merugikan masyarakat setempat baik harta benda maupun nyawa. Menurut Suripin, (2004; 7) drainase yang berasal dari bahasa Inggris Drainage mempunyai arti mengalirkan, menguras, membuang, atau mengalihkan air. Drainase dalam bidang teknik sipil, dapat didefinisikan sebagai suatu tindakan teknis untuk mengurangi kelebihan air, baik yang berasal dari air hujan, rembesan, maupun kelebihan air irigasi dari suatu kawasan/lahan, sehingga fungsi kawasan/lahan tidak terganggu. Drainase dapat juga diartikan sebagai usaha untuk mengontrol kualitas air tanah dalam kaitannya dengan salinitas, jadi drainase menyangkut tidak hanya air permukaan tapi juga air tanah. Perencanaan sistem drainase ruas jalan Parit 16 dengan dimensi tinggi saluran (h) 0,85 meter, lebar saluran (b) 1,00 meter dengan kemiringan 0,04 dan tinggi jagaan 0,65 meter sedangkan ruas jalan parit 17 dengan dimensi tinggi saluran (h) 0,95 meter, lebar saluran (b) 1,00 meter dengan kemiringan 0,04 dan tinggi jagaan 0,69 meter pembangunan sistem drainase ini agar dapat menampung debit air hujan di jalan Sungai Beringin yang menyebabkan banjir genangan pada saat musim hujan. Dari hasil analisa perhitungan maka diperoleh total biaya Rencana Anggaran Biaya pembangunan saluran drainase ruas jalan parit 16 sebesar = Rp. 3,219,594,000.00 dan saluran drainase ruas jalan parit 17 sebesar = Rp. 3,859,080,000.00.  


2010 ◽  
Vol 152-153 ◽  
pp. 98-101
Author(s):  
Zhi Qiang Zheng ◽  
Xin Gen Xiong ◽  
Ke Ming Chen ◽  
Bo Jun Lin ◽  
Xu Wen Li

The tube spread around strong cooling technology is new technology of the making semisolid slurry and semisolid billet in Semi-Solid Processing. The technologic parameter of its on the A356 Alloy is researched in the article. It is showed by the result of the experimentation: that the fine and form verge on rotundity crystal grain is made at 180L/h and at 640-650°C. It has met all the conditions in the semi-solid processing on semisolid billet. Semi-solid forming technology has been called the "new metal processing technology in the 21st century", which in foreign countries has certain industrial applications. In 1996 in the United States the sales of semi-solid casting was up to 1 billion dollars. But the industrial application in China is almost empty, one of the most important reasons is: the preparation of slurry or billet is too complicated or cost of production is too high, so that semi-solid forming technology in China has suffered serious setbacks on the road of industrialization. According to this situation, we have done a little attempts on manufacturing slurry and billet of semi-solid forming and have developed a new technology of spread around strong cooling whose intellectual property rights belong to us, equipment production is simple and the process is easy to control and the semi-solid slurry is east to prepare continuously. It will be discussed in this paper that process parameters of the single-tube strong cooling impacts on the microstructure of semi-solid


2021 ◽  
Vol 35 (1) ◽  
pp. 143-149
Author(s):  
Jin-Suk Kwon ◽  
Hwang-Jin Kim ◽  
Soo-Ho Lee ◽  
Su-Young Kim ◽  
Tae-Hwe Park ◽  
...  

Recently, car fires have been occurring on city roads (47.3%) and expressways (17.2%). Depending on the traffic conditions on the road, the growth of these fires can be delayed until firemen or a pump car arrives at the scene. In this study, application and utilization methods were derived based on car fire extinguishing experiments. To this end, a suffocation effect was induced using a car fire blanket and without using water in the event of a car fire. A car was ignited, and the car fire blanket was applied for 10, 20, and 30 min during the peak of the fire to verify whether the fire could be extinguished. A partial fire was caused for the three experiments, which could be put out with a small amount of water. Based on the results of these experiments, i.e., car fires can be put out using a car fire blanket and an on-site utilization plan, a new technology is presented.


2019 ◽  
Vol 18 (1) ◽  
Author(s):  
Romario W. Pandei ◽  
Steve W. M. Supit ◽  
Jemmy Rangan ◽  
Arthur Karwur

ABSTRACTThe application of pervious concrete has been increasing in the area of civil engineering to be one of the alternative solutions in reducing stormwater run-off and prevents flooding. This research aims to investigate the compressive strength and permeability of pervious cement concrete with various of cement:aggregate ratio = 1:2, 1:4 and 1:6, and at a water cement ratio of 0.3. The proportion that obtained highest compressive strength at 7 days was then selected to investigate the effect of superplasticizer addition in pervious concrete based on the results of compressive strength test at 7, 14 and 28 days, and void ratio test at 7 and 28 days. The infiltration rate test was also conducted according to ASTM C1701-standard to analyse the permeability level of pervious concrete with and without superplaticizer. The results show that the optimum compressive strength of pervious concrete at 7 days peaked at 5.67 MPa, reached by the mixtures with cement:aggregate ratio = 1:2. The addition of 0.5% superplasticizer by weight of cement in this mixture was found effective in improving the compressive strength of pervious concrete up to 8.51 MPa, 10.92 MPa and 13.47 MPa at 7, 14 and 28 days, respectively. It can be concluded that the use of superplasticizer has an effect in increasing the bonding between aggregate-paste and therefore, improves the compressive strength and balance the permeability properties of pervious cement concrete.Key words : Pervious concrete, compressive strength, void ratio, permeability, superplasticizerABSTRAKAplikasi beton berpori semakin mendapat perhatian di bidang Teknik Sipil karena dapat dijadikan sebagai salah satu solusi untuk mengurangi limpasan air hujan dan mencegah banjir. Penelitian ini bertujuan untuk mengivestigasi karakteristik beton berpori berdasarkan pengujian kekuatan tekan dan permeabilitas beton dengan variasi campuran komposisi semen:agregat = 1:2. 1:4 dan 1:6 dan FAS = 0,3. Dari komposisi campuran yang menghasilkan kuat tekan tertinggi pada 7 hari, dilakukan penelitian lanjutan dengan menggunakan bahan tambah superplasticizer untuk pengujian kuat tekan umur beton 7, 14, dan 28 hari serta pengujian porositas pada umur 7 dan 28 hari. Pengujian laju infiltrasi juga dilakukan berdasarkan standard ASTM C1701 untuk mengevaluasi tingkat permeabilitas beton berpori dengan dan tanpa menggunakan superplasticizer. Hasil penelitian menunjukkan bahwa kuat tekan optimum beton berpori pada umur 7 hari dihasilkan oleh campuran semen:agregat = 1:2 dengan nilai sebesar 5,67 MPa. Penambahan superplasticizer sebesar 0.5% dari berat semen pada komposisi campuran ini menghasilkan nilai kuat tekan beton berpori berturut-turut sebesar 8,51 MPa, 10,92 MPa dan dan 13,47 MPa pada umur beton 7, 14 dan 28 hari. Penggunaan superplasticizer pada komposisi yang tepat disimpulkan memiliki pengaruh dalam meningkatkan ikatan antara agregat dan pasta semen sehingga memperbaiki karakteristik kuat tekan beton berpori dan tingkat permeabilitasnya.Kata kunci : Beton berpori, kuat tekan, porositas, permeabilitas, superplasticizer


Sign in / Sign up

Export Citation Format

Share Document