Curious Civil Engineer

  Click here to join This course is designed to expand your knowledge. in this course you will learn almost everything about concrete. Concrete is the most used material in construction worldwide. We can find concrete almost in everything around us. Therefore, we need to understand the properties and behavior of this material and what the reason behind using it intensively in construction. Concrete is a durable and it live for a long time. That's why it is preferred in construction of house and building. In this course, we will study the different ingredients of concrete. Also, I will explain the admixture and how various admixtures can alter concrete properties. Recently the using of pozzolans increased sharply, adding of pozzolans to the concrete mix will enhance concrete properties. We will discuss the different type of pozzolans and their effects on concrete. Also, in this course, you gain knowledge regarding SCC and fiber reinforced concrete. Concrete is very good in compressi

The main function of diaphragms is to provide a stiffening effect to deck slab in case bridge webs are not situated directly on top of bearings. Therefore, diaphragms may not be necessary in case bridge bearings are placed directly under the webs because loads in bridge decks can be directly transferred to the bearings.On the other hand, diaphragms also help to improve the load-sharing characteristics of bridges. Diaphragms also contribute to the provision of torsional restraint to the bridge deck. Diaphragm will be used also to resist stresses that occurs during the post-tensioning process. Post-tensioning hardware are casted inside the diaphragm. Figure 1 construction management: concrete construction bridge construction:How to become a bridge engineer Types of diaphragm: Diaphragm at the span end: this type of diaphragms will be located between two bridge spans or at the bridge abutments. Expansion joints will be used to connect bridge spans. This expansion joint will be installed o

Join from here Join the course   This course designed to expand your practical side of engineering knowledge. This course is concentrating on the construction of roads. Here you will learn how the road constructed. The construction stages such as protection of existing services, clearing the area, future utilities, preparing the road subgrade, then placing different pavement layers such as sub-base, base course, and asphaltic courses. Also, we will discuss the types of asphaltic course and the common defects of asphaltic pavement, such as permanent deformation, fatigue cracking, and low-temperature cracking. Also, I will show a typical cross-section of road and road profiles.  Also, I will explain what the prime coat is, why the prime coat is used, and the proper way of applying, preparing the surface of the pavement layer before applying the prime coat, and the curing time for a prime coat. Tack coat, what is the Tack coat, why the Tack coat used, where the tack coat is used, and the

  Lowering the groundwater table will significantly improve the soil properties. Reducing of the groundwater table is a time-limited process and not always possible. Under running steams. Where the settlement could affect an important area adversely such as inside cities groundwater lowering should not be allowed. Also, it should not be permitted if the groundwater lowering could impact the flora and existing water supply aquifers. Groundwater lowering methods will required arrangement for storing the water. In some cases, it is necessary to treat the water before discharge it.  In permeable strata where the permeability, k, exceeds about 10–3 cm/s, or where an aquifer can be dewatered below less permeable strata, the level of the water table over a wide area can be drawn down by pumping from boreholes and deep wells. These processes are widely used in open excavations and are also suited to cut-and-cover tunnels and shallow bored tunnel. Figure 1 construction management: concrete cons

Publish your paper from  here This paper is a study that summarizes, the procedure used to increase the capacity of an existing concrete bridge in the UAE. Traffic congestion is a severe problem in modern life. Severe congestion can negatively impact the country's economy, environment, and the health of road commuters. The increase in trip duration due to traffic congestion will result in consuming more fuel which results in a higher cost of trip and more emissions which affect both the economy and the environment. Moreover, the road commuter will be traveling for a long time which can affect their sleeping hours and mental health. Constructing more roads, and bridges and encouraging people to use public transport are some of the measures taken to reduce traffic congestion. To evaluate the effectiveness of an existing highway, certain parameters such as traffic quantity, type of vehicles in the traffic stream, speed of traffic stream, and the density of traffic stream will be measu

Publish your paper from  here This paper compares the actual settlement of the pile foundation with the anticipated theoretical settlement computed using various methods. The piles under investigation were constructed to support a bridge structure and they are cast-in-situ piles. The bridge structure is supported by three groups of piles with pile lengths ranging from 11 m to 14 m and a diameter of 1.20 m. Detailed geotechnical investigations were performed to determine the soil's mechanical and chemical properties. Moreover, four piles were loaded statically to verify the viability of the design. kentledge method for testing was used, the concrete block was used as a counterweight and the main load was generated by the use of Hydraulic jacks, the settlement of piles recorded for each load increment. Four strain gauges were used to record the settlement of piles. The estimation of pile foundation theoretical settlement is performed by the use of various equations suggested by each

Publish your paper from  here This paper summarizes the common procedures and measures used on construction sites to control the quality of executed works. The presence and implementation of a quality management system will ensure that the construction meets client requirements. The presence of a quality management system alone is not sufficient; the correct and strict implementation of a quality management system is substantial. The implementation of a quality management system in construction requires the collaboration of the client, contractor, and engineer (a client representative). The practical side of quality management systems is discussed in this paper, and the construction of a stormwater network in the UAE is taken as an example and case study. This paper is mainly focused on quality in construction projects. Controlling the quality of construction projects will pass through various stages. And it is not limited to construction activities. The control of construction activit

Publish your paper from  here The economic growth of any country relies on many factors, such as natural resources, technology, manpower, regulations, and infrastructure. Infrastructure is essential for country development. Road networks are part of the infrastructure of any country. The presence of a reliable road network will facilitate the shipping of goods, which will save time and money and contribute to economic growth. A road network is considered reliable when it reduces the journey time, provides the best routes, properly covers a country or area, reduces the delay of public transportation, contributes to economic growth, and ensures a smooth ride. Building a high-quality road pavement that meets the needs of road users and ensures smooth riding requires good planning, design, and construction of the pavement. The construction of durable pavement can be attained through the collaboration of reliable design, selecting high-quality and suitable raw materials, appropriate asphalt

Publish your paper from  here The impact of using Polymer Modified Bitumen in Asphalt mixes Paper Abstract: The economic growth of any country relies on many factors, such as natural resources, technology, manpower, regulations, and infrastructure. Infrastructure is essential for country development. Road networks are part of the infrastructure of any country. The presence of a reliable road network will facilitate the shipping of goods, which will save time and money and contribute to economic growth. A road network is considered reliable when it reduces the journey time, provides the best routes, properly covers a country or area, reduces the delay of public transportation, contributes to economic growth, and ensures a smooth ride. Building a high-quality road pavement that meets the needs of road users and ensures smooth riding requires good planning, design, and construction of the pavement. The construction of durable pavement can be attained through the collaboration of reliable

 Geotextile is a textile material used in contact with soil or rock or any other suitable materials for different purposes such as the separation of aggregates from the surrounding soil, improving earth properties, and other functions. Geotextile can be produced through natural or synthetic fibers. Natural fibers found in the form of paper strips, jute nets, wood shavings, or wool mulch are being used as geotextiles. In certain soil reinforcement applications, geotextiles have to serve for more than 100 years. On the other hand, the synthetic fibers manufactured from four   main synthetic polymers most widely used as the raw material for geotextiles are – polyester, polyamide, polyethylene, and polypropylene. Figure no:01 Geotextile can be used for different purposes such as separation, filtration, drainage, reinforcement, sealing, and protection. Geotextile can be used for two or more applications at the same time depending on the purpose of using Geotextile. 

 Prestressing concrete is done by subjecting concrete to a permanent stress to improve the reinforced concrete member characteristics such as strength and durability. In prestressed concrete, the concrete is subjected to a compressive force. The compressive force will improve concrete flexural, shear strength and reduce the tensile stresses on concrete which reduces the possibility of cracks formation and this will result in extending structure service life. The applying of compression force will be done by tensioning of high tensile strands then release them in a controlled manner to provide the required compressive stress. Applying the prestressing force can be done by two methods. Pretensioning method, in this method the strands tensioned first then the concrete is casted. When the concrete attained the desired strength, strand will be cut and released to compress the concrete to produce the required compressive stresses. Figure 1 Post-tesnsioning method is the second method, in

The guard rail is a safety barrier placed on the sides of the roads. The guard rails are usually placed to stop vehicles from colliding with structures beyond the road edge such as piers, streetlight poles, and any other structures  or people   . The collision of vehicles with such structures can cause severe damage to vehicles and it can result in severe injury and in some cases the death of the driver. Also, it is very important to use guard rails to prevent the car from falling off the road, this is very common for roads built on mountains.  The guard rail will reduce the effect of the vehicle impact and it will stop the vehicles and redirect them back to the road in most cases. This will reduce the severity of the crash and it can save the life of car users in most cases. however, it will not give full protection for all driving situations. The performance of impact will depend on many factors such as the speed of the vehicle, size of the vehicle, the orientation of the vehicle at

Prior to laying asphalt, we usually spray prime coat above the aggregate road base to seal the last layer of aggregate, and to prevent moisture from damaging the laid of asphalt. the prime coat should be sprayed at a specific rate. The rate of spraying the prime coat can vary as per the project specifications. The rate of applying prime coat can range from 0.6 Kg/m2 to 1Kg/m2 and it can vary from different countires.   Figure 1 Verifying the rate of application will be simply done by placing a square piece of plywood or filler board. We will measure the weight of the filler board weight before applying the prime coat and after applying the prime coat. The rate of application will be the difference in weight divided by the area of the filler board. Figure no:02 show a filler board placed during the spraying of the prime coat to measure the rate of application. Figure 2

Script: Rebound hammer is a non-destructive test used to examine the hardened concrete. The principle of the rebound test is based on the rebound of a plunger. The plunger of the rebound hammer is pressed against a concrete surface. The hammer mass will be pushed back and secured to a pin. The impact spring is attached to the hammer mass, so it will be extended with the hammer mass. Then the hammer mass is released. finally, the mass will rebound against the concrete surface. The surface hardness and compressive strength will be correlated with the rebound of the spring controlled mass.    A rebound hammer can be used to evaluate the compressive strength of a concrete member, quality of concrete, and uniformity of concrete. The approximate impact energy required for the rebound of the hammer for different applications is shown in this table. The procedure of conducting the rebound test will begin by the calibration of the test instrument. The rebound hammer will be calibrated against