The weight of cement required to achieve a concrete with the same compressive strength as the original mix design, after increasing the water content to 328.5 lb, is 730 lb.
Given,Coarse Aggregates = 1,575 lb, Fine Aggregates = 1,100lb, Cement = 700 lb, Water = 315 lbWe are given that the water content in the mix needs to be increased from 315 lb to 328.5 lb. We need to find the weight of cement to achieve the same compressive strength as the original concrete mix design.
To calculate the new weight of cement, we need to use the concept of water-cement ratio. Water-cement ratio is the ratio of weight of water to the weight of cement used in a concrete mix design.
Water-cement ratio = Weight of water / Weight of cement
Using the original mix design, we can find the water-cement ratio as follows:
Water-cement ratio = 315 / 700 = 0.45. Now, we can use this water-cement ratio to find the weight of cement required for the new mix design:0.45 = 328.5 / Weight of cement
Weight of cement = 328.5 / 0.45 = 730 lb
Therefore, the weight of cement required to achieve a concrete with the same compressive strength as the original mix design, after increasing the water content to 328.5 lb, is 730 lb.
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According to Ref. 213/91, fire extinguishing equipment can be frozen True or False
False. Fire extinguishing equipment cannot be frozen according to Ref. 213/91.
According to Ref. 213/91, fire extinguishing equipment cannot be frozen. Fire extinguishers are essential safety devices designed to combat fires effectively. They contain pressurized agents that are specifically formulated to extinguish different types of fires. Freezing temperatures can significantly impair the functionality of fire extinguishers and render them ineffective in emergency situations.
When fire extinguishing equipment freezes, several issues can arise. First, the contents of the extinguisher may expand as they freeze, potentially leading to ruptures or leaks in the container. This can cause the extinguisher to malfunction or become hazardous when used. Second, freezing temperatures can affect the performance of the extinguishing agent itself. Certain agents, such as water-based solutions, can solidify or lose their effectiveness when exposed to extreme cold.
It is crucial to store fire extinguishers in suitable environments that are above freezing temperatures. This ensures that the equipment remains in optimal condition and is ready for immediate use during emergencies. Regular inspections and maintenance are also essential to identify any signs of damage or deterioration that may compromise the functionality of fire extinguishers.
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You are making a concentric bend and the radius of the first pipe is 16in, the od of the first pipe is 2in, and the spacing between pipes is 3in what is the radius of the second pipe?
The radius of the second pipe in the concentric bend is 19 inches.
In a concentric bend, the pipes are arranged in a circular manner with the same center point. To find the radius of the second pipe, we need to consider the information provided.
Step 1: Calculate the radius of the first pipe.
Given that the radius of the first pipe is 16 inches and the outer diameter (OD) is 2 inches, we can use the formula: OD = 2 × radius.
2 inches = 2 × 16 inches
2 inches = 32 inches.
So, the outer diameter of the first pipe is 32 inches.
Step 2: Calculate the spacing between the pipes.
The spacing between the pipes is given as 3 inches. This means there is a gap of 3 inches between the outer diameter of the first pipe and the inner diameter of the second pipe.
Step 3: Calculate the radius of the second pipe.
To find the radius of the second pipe, we need to consider the outer diameter of the first pipe and the spacing between the pipes. The radius of the second pipe can be calculated using the formula: radius = (OD + spacing) / 2.
radius = (32 inches + 3 inches) / 2
radius = 35 inches / 2
radius = 17.5 inches.
Therefore, the radius of the second pipe in the concentric bend is 17.5 inches.
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When installing an engine on an engine stand for disassembly, Technician
A says to always be sure the stand is rated at or above the engine's
weight. Technician B says the engine's center of gravity must be balanced
on the stand for safety. Who is correct?
Select one:
A. Technician A
B. Technician B
C. Both A and B
D. Neither A nor B
Answer:
The answer is D
Explanation:
Because neither of them are wrong I dont know how to really tell you!
A process is in control with mean 50 and standard deviation of 2. The upper specification limit for the product being produced is 60 and the lower specification limit is 42. What is the value of Cpk?
Answer:
Cpk = 1.33
Explanation:
Given:
Mean = 50
Sd = 2
USL = 60
LSL = 42
The Cpk means process capability index. it helps decide the specification limit when the nominal value is not the central value of upoer specification limint (USL) and lower specification limit (LSL).
The Cpk can be derived using the formula:
\(Cpk = min [\frac{(usl - mean)}{3 * \sigma}, \frac{(mean - lsl)}{3*\sigma}] \)
\(Cpk = min [\frac{(60 - 50)}{3*2} , \frac{(50 - 42)}{3*2}] \)
Solving further,
\(Cpk = min [\frac{10}{6} , \frac{8}{6}] \)
Cpk = min ( 1.67 , 1.33)
Cpk = 1.33
Cpk = 1.33
Problem 3. A mixture of 50 mol% Methanol (1) and 50 mol% water (2) at 25∘C and 101.325kPa pressure are fed into a flash tank at 80∘C and the same pressure. A mixture of vapor and liquid forms. 3a. 15 pts. Assuming Raoult's Law holds, determine the composition of the vapor and liquid phases, and the fraction of vapor and liquid that exit the flash tank.
According to the information we can infer that the composition of the vapor phase is 50 mol% Methanol and 50 mol% water, while the composition of the liquid phase is also 50 mol% Methanol and 50 mol% water. The fraction of vapor and liquid that exit the flash tank depends on the temperature and pressure conditions and can be determined using the equilibrium relationship.
How to determine the composition of the vapor and liquid phases?According to Raoult's Law, the partial pressure of a component in a mixture is proportional to its mole fraction. In this case, since the initial mixture is 50 mol% Methanol and 50 mol% water, the partial pressures of Methanol and water in the mixture will be equal to their mole fractions.
Additionally, we have to consider that the mixture is fed into the flash tank at 80∘C and the same pressure (101.325 kPa), we can determine the composition of the vapor and liquid phases using the equilibrium relationship.
By comparing the equilibrium data, we can find that the vapor and liquid phases will have the same composition as the initial mixture of 50 mol% Methanol and 50 mol% water.
According to the information, we can conclude that the composition of the vapor phase and the liquid phase will both be 50 mol% Methanol and 50 mol% water. The fraction of vapor and liquid that exit the flash tank will depend on the equilibrium conditions, and without additional information, we cannot determine the exact fractions.
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A machine tool produces 26 components for an assembled product. These are the only partsproduced by the machine. To keep in-process inventories low, a batch size of 75 units is produced for each component. Demand for the product is 900 units/yr. Production downtime costs $120/hr. Changeover time between batches is 1.5 hr, and average cycle time per part 4.0 min. The annual holding cost for each of the 26 parts is $1.60/pc. (a) Determine total annual inventory cost for the 26 parts. (b) Is the given production schedule feasible for a one shift operation? That is, can 900 units of each of the 26 components be completed in 2000hours? If so, how many idle hours of machine time occur in the 2000 hours? If not, how many overtime hours must be authorized during the year?
Total annual inventory cost for the 26 parts is 196.6
What is the annual inventory cost?The cost of purchasing, ordering, and storing inventory is added together. TC is the total cost and is calculated as follows: TC = PC + OC + HC, where PC stands for purchase cost, OC for ordering cost, and HC for holding cost.
The sum of the regular cost and the supplemental yearly cost is referred to as the total annual cost.
PC is the purchase cost, OC is the ordering cost, and HC is the holding cost.
TC = PC + OC + HC,
1.60 + 75+ 120 = 196.6
Total annual inventory cost for the 26 parts is 196.6
The given production schedule feasible for a one shift operation.
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A helical compression spring is wound using 0. 4-in diameter music wire. The spring has an outside diameter of 4. 7-in with squared and ground ends, and 9. 0 total coils. The spring has a free length of 11. 5-in. For this problem, you have to calculate the following, and write it down in your procedure:
The spring scale/rate (k)
The solid length (Ls)
The yield load (Fy)
The maximum shear stress generated once the solid length is reached (τmax)
The values for the shear modulus of the material (G) and the spring scale/rate (k), we can't accurately calculate the spring scale/rate (k), yield load (Fy), and maximum shear stress (τmax).
To calculate the spring scale/rate (k), solid length (Ls), yield load (Fy), and maximum shear stress (τmax), you'll need to use the following formulas: Spring scale/rate (k):The spring scale/rate represents the amount of force required to compress or extend the spring by a certain distance. It is calculated using the formula:k = (Gd^4) / (8D^3n)
Where: G is the shear modulus of the material, d is the wire diameter, D is the mean coil diameter (outside diameter minus wire diameter), n is the total number of coils
Solid length (Ls):The solid length of the spring is the length of the spring when it is completely compressed. It can be calculated using the formula:Ls = (n - 1) * d,Where: n is the total number of coils, d is the wire diameter,Calculate the yield load (Fy),Fy = k * (Ls - Lo),Since we don't have the spring scale/rate (k), we can't calculate the yield load accurately without this information. Calculate the maximum shear stress (τmax),τmax = (16Fy) / (πd^3) Since we don't have the yield load (Fy), we can't calculate the maximum shear stress accurately without this information.
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Which of the following news headlines is stated appropriately following a correlational study?
"Increased mental state talk ensures children's social competence."
"Increased screen time causes attention problems."
"Overly strict parenting is associated with poorer academic outcomes."
"Number of friends proved to impact prosociality (i.e., positive interactions with others)."
o
The news headline that is stated appropriately following a correlational study is the fourth option: "Number of friends proved to impact prosociality (i.e., positive interactions with others)."
Correlational studies determine the relationship between two variables without establishing causation. This means that they cannot prove that one variable causes the other to happen. Instead, they can only suggest a correlation between the variables.
Therefore, when reporting findings from correlational studies, it is important to use language that reflects the correlation instead of suggesting a causal relationship.
In the news headline "Number of friends proved to impact prosociality (i.e., positive interactions with others)," the language used appropriately reflects the correlational relationship between the number of friends and prosociality. It suggests that the two variables are related but does not imply that one caused the other.
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How is technology used in improving the casting products?
Answer:
Explanation:
Technology is used in a variety of ways to improve casting products. Some examples include:
1.Computer-aided design (CAD) and computer-aided manufacturing (CAM) software: These tools allow for the creation of highly detailed and precise designs for casting products, resulting in improved product quality and consistency.
2.3D printing: This technology allows for the creation of complex, detailed molds for casting, as well as the ability to produce small quantities of parts without the need for traditional tooling.
3.Simulation software: Simulation software is used to predict the behavior of a casting product during the casting process, allowing for adjustments to be made to the design and manufacturing process to improve product quality and reduce defects.
4.Robotics and automation: Robotics and automation are increasingly used in casting operations to improve efficiency, reduce costs, and improve product consistency.
5.Metal Additive manufacturing: Metal additive manufacturing techniques such as Directed energy deposition, Electron beam melting, and Laser beam melting can be used to produce casting products with high precision and complex geometries, which are not possible with traditional casting methods.
6.Non-destructive testing techniques: Non-destructive testing techniques such as X-ray, ultrasonic, and magnetic particle inspection are used to detect defects and ensure product quality in casted products.
Overall, technology plays a crucial role in improving the casting process, allowing for more precise and efficient production of higher-quality products.
Elliptical concrete pipes can be more effective than circular pipes for shallow flow and, as a result are often used in sewer construction. An engineer wants to construct a concrete pipe with an elliptical cross section. The cross section will have a maximum horizontal opening of 4 feet and a maximum vertical opening of 3 feet. (a) (6 pts) If the the origin of a rectangular coordinate system is placed at one of the covertices, what would the equation of the elliptical cross section be? Sketch a picture of your ellipse in order to make the placement of the origin clear to someone reading your work. (b) (5 pts) Where should the foci be placed? (c) (3pts) What is the eccentricity of the ellipse?
a)The equation of the elliptical cross section if the origin of a rectangular coordinate system is placed at one of the covertices can be obtained by using the standard form of the equation of an ellipse: x²/a² + y²/b² = 1.
Since the origin is at one of the covertices, the center of the ellipse is located at (0, 0) and the major axis of the ellipse coincides with the horizontal axis. Therefore, the horizontal opening of the ellipse corresponds to the length of the major axis, which is 4 feet, and the vertical opening of the ellipse corresponds to the length of the minor axis, which is 3 feet. Thus, we have:a = 4/2 = 2b = 3/2 = 1.5Therefore, the equation of the elliptical cross section is:x²/4² + y²/1.5² = 1Here is the sketch of the ellipse with the origin at one of the covertices: b)The foci of the ellipse can be found by using the formula c = √(a² - b²),
where c is the distance between the center of the ellipse and each focus. In this case, we have:a = 2b = 1.5Therefore:a² = 4b² = 2.25c = √(a² - b²) = √(4b² - b²) = b√3 ≈ 1.3Thus, the foci of the ellipse are located at (±c, 0), that is, at (±1.3, 0).Here is the sketch of the ellipse with the foci marked in red: c)The eccentricity of the ellipse can be obtained by using the formula e = c/a. In this case, we have:a = 2c = b√3 ≈ 2.6Therefore:e = c/a = (b√3)/2 ≈ 0.65Thus, the eccentricity of the ellipse is approximately 0.65.
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1. The term lefty loosey, righty tighty is used to prevent what?
Answer:
Used to recall the direction a standard screw
Consider a continuous-flow, indraft supersonic wind tunnel, which uses a vacuum pump to draw atmospheric air from outside of the wind tunnel building through a converging-diverging nozzle, to establish the supersonic flow in the test section. Assuming a standard day in Morgantown, WV (elevation of 961 feet) and a Mach number of 2.0 in the test section, compute the following:_____
a) The test section temperature
b) The test section pressure, assuming isentropic flow
c) The test section velocity
d) The change in the specific enthalpy of the air
For the Elliptic curve E11(1, 6), consider the point G = (2, 7),
compute the point 4G and 7G
The value of the point 4G is (6, -5) and the value of the point 7G is (99, 62) for the elliptic curve E11(1, 6).
To compute 4G, we first calculate 2G, then add G to obtain 3G, and finally add G to obtain 4G.
Calculating 2G:
We can use the point doubling formula to compute 2G:
λ = (3 * 2^2 + 1) / (2 * 7) = 13/14
x = λ^2 - 2 * 2 = 3
y = λ * (2 - 3) - 7 = -8
So, 2G = (3, -8).
Calculating 3G:
We can use the point addition formula to compute 3G:
λ = (−8 − 7) / (3 − 2) = −15
x = λ^2 − 2 × 3 = 15
y = λ × (3 − 15) − 8 = 4
So, 3G = (15, 4).
Calculating 4G:
We can use the point addition formula to compute 4G:
λ = (4 − 7) / (15 − 3) = −1/4
x = λ^2 − 2 × 15 = 6
y = λ × (15 − 6) − 4 = −5
So, 4G = (6, -5).
Therefore, 4G = (6, -5).
To compute 7G, we can use the double-and-add method. We first compute 2G = (3, -8), then add G to obtain 3G = (15, 4). We then double 3G to obtain 6G = (10, -3), and add G to obtain 7G:
λ = (−3 − 7) / (10 − 2) = −1
x = λ^2 − 2 × 10 = 99
y = λ × (10 − 99) − 3 = 62
So, 7G = (99, 62).
Therefore, 7G = (99, 62).
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All of these are designed to absorb collision energy EXCEPT:
A. dimples.
B. slots.
C. crush zones.
D. reinforcements.
Answer:dimples
Explanation:
The option that is not designed to absorb collision energy is Reinforcements.
Thus option D (reinforcements) is correct.
Here,
Reinforcements are designed to strengthen and support the structure of the vehicle, and not to absorb collision energy.
Automobiles have several safety features designed to protect drivers and passengers in the event of a collision. These safety features include airbags, seat belts, crumple zones, and several other components.
Among these safety features, the ones designed to absorb collision energy are dimples, slots, and crush zones. They are made to absorb the force of the impact during a collision and help prevent serious injuries to the occupants of the vehicle.
Therefore, the correct answer is D, reinforcements, which are not designed to absorb collision energy.
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12. Some engine blocks are made of _______, but its high cost prohibits use in average-priced vehicles. A. cast iron B. aluminum C. magnesium alloy D. hydrocarbon
how many 8 bit strings contain at least 1 "1"?
Answer:
There are 256 8-bit strings in total, and 128 of them contain at least one "1" (half of the total number of strings).
Which component of the enterprise platform will help the company capture, curate, and consume customer information to improve their services?
Data and insight is the component of the enterprise platform will help the company capture customer information.
What is Data and insight?
These are the data and knowledge gotten from analysis of customer's information in a business.
This enterprise platform is very important as it helps the organization to improve their services
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A 550 kJ of heat quantity needed to increase water temperature from 32°C to 80°C. Calculate the mass
of the water when the specific heat capacity of water is 4200 J/kg °C.
Answer:
2.728 kg
Explanation:
The units help you keep the calculation straight.
\(\dfrac{550\text{ kJ}}{(80^\circ\text{C}-32^\circ\text{C})(4.200\text{ kJ/kg\,$^\circ$C})}=\dfrac{550}{48\cdot4.2}\text{ kg}\approx\boxed{2.728\text{ kg}}\)
Using a definition of the limit of function, prove that the following functions are continuous
at = 0:
) () = 1 − 2 + 52, 0 = 1
Answer:
... you gotta do divson?
Explanation:
in mining auxiliary operations are the supplementry steps that support the production cycle . elucidate the auxiliary operations of underground mining?
Answer:
The answer is below
Explanation:
The mining auxiliary operations in underground mining involve various activities that are important for a successful mining operation particularly in the areas of productive operating conditions.
The activities involved in the auxiliary operations in underground mining include the following: ventilation, haulage, drainage, power supply, lighting, delivery of compressed air, water, supplies to the working sections, and communications.
Computers designed using the von Neumann Architectures have two buses: one for data and one for instructions
It should be noted that the computers designed using the von Neumann Architectures do not have two buses. Therefore, the statement is false.
Von-Neumann ArchitectureIt should be noted that Von-Neumann Architecture is made of three major bus systems for data transfer.
The Address Bus carries the address of data between the processor and the memory.
The Data Bus carries data between the processor, the memory unit, and the input or output devices.
The Control Bus carries signals from the central processing unit.
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... is an actual sequence of interactions (i.e., an instance) describing one specific situation; a ... is a general sequence of interactions (i.e., a class) describing all possible ... associated with a situation. ... are used as examples and for clarifying details with the client. ... are used as complete descriptions to specify a user task or a set of related system features.
Answer:
ScenarioUse caseScenariosScenariosUse caseExplanation:
A scenario is an actual sequence of interactions (i.e., an instance) describing one specific situation; a use case is a general sequence of interactions (i.e., a class) describing all possible scenarios associated with a situation. Scenarios are used as examples and for clarifying details with the client. Use cases are used as complete descriptions to specify a user task or a set of related system features.
Assume a car's exhaust system can be approximated as 14 ft of 0. 125-ft-diameter cast-iron pipe with the equivalent of six 90 degree flanged elbows and a muffler. (See Video V8. 5) The muffler acts as a resistor with a loss coefficient of K_L = 8. 5. Determine the pressure at the beginning of the exhaust system if the flowrate is 0. 10 cfs, the temperature is 250 degree F, and the exhaust has the same properties as air. Mu = 4. 7 times 10^- 7 lb. S/ft^2 rho = 1. 74 times 10^- 3 slugs/ft^3 Element = 0. 00085 ft
The formula of head loss calculation for pipe fittings is given as hf = K_f × (v^2/2g).Where, hf is the head loss due to the pipe fittings. Kf is the resistance coefficient of the fitting. V is the velocity of fluid flow in the pipe. g is the acceleration due to gravity. The velocity of fluid flow in the pipe can be found using the formula of discharge:
Q = A × VWhere,Q is the flow rate of fluid. A is the cross-sectional area of the pipe.V is the velocity of fluid flow in the pipe. According to the question, A car's exhaust system can be approximated as 14 ft of 0.125-ft-diameter cast-iron pipe with the equivalent of six 90 degree flanged elbows and a muffler.
Mu = 4.7 × 10^-7 lb.s/ft^2ρ =
1.74 × 10^-3 slugs/ft^3L
= 14 ftD = 0.125 ft
K_L = 8.5
Element = 0.00085 ft
The cross-sectional area of the pipe can be found as follows:
A = (π/4) × D^2A
= (π/4) × (0.125)^2A
= 0.01227 ft^2
The velocity of fluid flow in the pipe can be found as follows:
Q = A × VV
= Q/AV
= 0.10/(0.01227)
= 8.146 ft/s
The Reynolds number can be found using the formula:
Re = (ρVD)/μ
Re = (1.74 × 10^-3 × 8.146 × 0.125)/4.7 × 10^-7
Re = 3.668 × 10^5
The pressure at the beginning of the exhaust system is 0.0596 psi.
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the complexity of bfs and dfs
Answer:
BFS uses Queue to find the shortest path. DFS uses Stack to find the shortest path. ... Time Complexity of BFS = O(V+E) where V is vertices and E is edges. Time Complexity of DFS is also O(V+E) where V is vertices and E is edges.
Explanation:
Tech A says that the torque converter should be bolted to the flexplate before installing the transmission. Tech B says that when installing the torque converter, three separate engagements with their mating parts must be felt. Who is correct?
Tech A and Tech B are both correct in the given context. The torque converter is a component that transmits power from the engine to the transmission through a series of gears. It is essential to install it correctly before installing the transmission.
Tech A is correct in saying that the torque converter should be bolted to the flexplate before installing the transmission. The flexplate is a plate that is bolted to the engine's crankshaft and has teeth around its outer edge that mesh with the starter motor. The torque converter also has teeth around its outer edge that engage with the flexplate. By bolting the torque converter to the flexplate, the two components become a single unit and can be installed together as one.
Tech B is correct in stating that when installing the torque converter, three separate engagements with their mating parts must be felt. The torque converter has three sets of splines that engage with the transmission's input shaft. The three separate engagements refer to the three sets of splines fitting correctly into their mating parts on the input shaft.
This ensures that the torque converter is correctly aligned with the transmission and will function properly once installed. Both Tech A and Tech B are correct in their statements regarding the installation of a torque converter.
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Which way do you turn the wrench to tighten the insert on this cam type holder?
Answer:
right !
Explanation:
What is the advantage of having the engine in the front of the car?
For starters, most vehicles are front-wheel drive (FWD), so it makes sense to have the engine over the wheels that need traction. This makes the vehicle much more stable, and also helps maintain a relatively balanced weight distribution when accelerating.
The use of a front motor offers two main advantages: better engine cooling and more uniform weight distribution.
What are the advantage of having an engine in the front of the car?
In this problem we have the case of a car, whose motor is in the front of the car. Now we proceed to summarize advantages of a front motor:
Engine cooling - Better cooling of the engine, especially in critical parts such as radiators. Less risk of overheating.Weight distribution - Offers a more uniform mass distribution in the vehicle, critical when car accelerates.To learn more more on cars: https://brainly.com/question/33357158
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an error occurred inside the server which prevented it from fulfilling the request.
Network structure analysis: The first and foremost thing you need to do is analyze your network structure.
The "Server error in '/' application" error message could arise if IIS has to be restarted. IIS Manager enables you to restart IIS. Administrative Tools may be accessed by clicking "Start" in the lower left-hand corner of your Remote Desktop connection. Panel in the "Administrative Tools" window Your browser's cookies should be deleted. You may fix many 500 Internal Server Error issues by deleting the cookies related to the website where the error is occurring. After deleting the cookie(s), restart the browser and attempt once more. Investigate a 504 Gateway Timeout issue instead. A 500 internal server error, as the name implies, denotes a widespread problem with the server that supports the website. This generally means that there is a bug or temporary error in the website's programming.
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a power generation system with a turbine and a generator is located at a dam wherer the water falls from 198.6 m height to the turbine. assuming turbines having 100% efficiency what should be the flow rate of water in kg/s to produce 11.0 mw of power?
The flow rate of water required to produce 11.0 MW of power is calculated using the formula P = ρghQ, where P is the power (in Watts), ρ is the density of water (1000 kg/m3), g is the gravitational acceleration (9.81 m/s2), h is the height of the dam (198.6 m), and Q is the flow rate (in m3/s).
What is gravitational acceleration ?Gravitational acceleration is the rate at which the velocity of an object changes due to the force of gravity. This acceleration is equal to the gravitational force acting on the object divided by its mass. The acceleration of gravity near Earth's surface is approximately 9.8 m/s2, meaning that objects accelerate downwards at this rate due to the force of gravity. This force is proportional to the mass of the object, so objects with greater mass experience greater gravitational acceleration.
Therefore, we can rearrange the equation to solve for Q:
Q = P / (ρgh)
Q = (11.0 × 10^6 W) / (1000 kg/m3 × 9.81 m/s2 × 198.6 m)
Q = 56.6 m3/s
To convert this to kg/s, we multiply by the density of water:
Q = 56.6 m3/s × 1000 kg/m3
Q = 56,600 kg/s
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The repair and rehabilitation of damaged or spalled concrete is done by removing the:____________A. Loose concreteB. CollapsingC. BreakageD. Bonding
Answer:
A. Loose concrete
Explanation:
Concrete is a solid composite structural material.It is the most used component in setting up a structure. Concrete is known for its very good ability to bear load, but can sometimes fail, or can be damaged. To rehabilitate or repair a concrete, the loose concrete must first be removed, so that the surface can be cleaned and well set before the material used for repair is applied on it.