Question

You’re on a jobsite pouring concrete and your mix begins to set up suddenly and unexpectedly....

You’re on a jobsite pouring concrete and your mix begins to set up suddenly and unexpectedly. List two ways you can determine if you’re having false set vs. having flash set.

Engineering   Civil-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

1. Plasticity- In false set Plasticity can be regained by further mixing. Flash set is also the rapid development of rigidity, but with the evolution of considerable heat. Plasticity cannot be regained. So if in further mixing of concrete plasticity is regained that means it is false set, if not then flash set.

2. Temperature- If you are familiar with the temperature of your concrete during normal hydration, you should be able to distinguish between the two types of set. Flash set generates a higher temperature within the concrete than does false set.   

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
having successfully completed this course, you have been assigned to set up a LAN for your...
having successfully completed this course, you have been assigned to set up a LAN for your office A) discuss the role of importance of communication as part of this set up (2 mrks) b) identify two types of communications media indicating your preference to create the LAN . justify your preference (4mrks)
You have just set up a customer satisfaction monitoring system for your new restaurant. Each week...
You have just set up a customer satisfaction monitoring system for your new restaurant. Each week you ask 20 randomly selected customers to respond to a simple questionnaire. One question asks, “Are you satisfied with the quality of service in this restaurant?” You have been conducting this study for the last 10 weeks and calculate that 93% of the customers have responded “yes” to your question. Set up a p-chart with two standard deviation control limits so you can determine...
Procedure I. Reverse Transcription. For each of your RNA samples set up the following reaction: *Remember...
Procedure I. Reverse Transcription. For each of your RNA samples set up the following reaction: *Remember to use proper RNA handling technique! 1. In a 0.2 ml size RNAse-Free tube add the following: • 0.5 µg RNA (no more than 6 µl) You can add as little as 0.1 µg of RNA if your concentration is low • 2 µl dT primer • Nuclease Free Water to final volume of 8 µl * Before you start write the exact volume...
You have a trust fund that was set up by your great uncle which will pay...
You have a trust fund that was set up by your great uncle which will pay you $40,000 on your 40th birthday and $10,000 on your 50th birthday. Assume that once you receive these two payments you can also invest then at a nominal rate of 5.5% to increase your retirement savings. Assume you still want all of your retirement savings contributions to be a constant annual nominal amount (an annuity). Calculate the amount you will now need to save...
The night before your birthday in 2007 you set up your telescope on a nearby mountaintop....
The night before your birthday in 2007 you set up your telescope on a nearby mountaintop. It was a clear night, and you had a stroke of luck: At 12:30 A.M. you spotted a new comet. After repeating the observation on successive nights, you were able to calculate its solar system coordinates p_0 = (x_0, y_0, z_0) and its velocity vector v_0 = (v_x0, v_y0, v_z0) on that first night. Using this information, determine the following: 1. the comet's perihelion...
VPython Physics 1211k 1. Here is a somewhat more sophisticated program that recreates one of your...
VPython Physics 1211k 1. Here is a somewhat more sophisticated program that recreates one of your experiments – a cart rolling up a ramp and back down. Particularly pay attention to the components of the acceleration. from visual import * #control the dimensions of the animation window. Turn off autoscaling. Then set the window to show 20 meters #in each direction. Then set the actual physical size of the animation window on the screen scene.autoscale = False scene.range = 20...
Set up hypotheses for the following situations and explain your reasoning (One-tail or two-tailed? What are...
Set up hypotheses for the following situations and explain your reasoning (One-tail or two-tailed? What are your null and alternate hypotheses? Why?). Indicate whether a z-test or t-test would be recommended to evaluate the hypotheses. If a t-test is recommended, how many degrees of freedom should be used? The EU wants to examine statistics on refugees’ ages. Historically, the mean age of refugees arriving in Europe is 27.5 years old with a standard deviation of 3.1 years. In 2015, the...
Tulip Company is made up of two divisions: A and B. Division A produces a widget...
Tulip Company is made up of two divisions: A and B. Division A produces a widget that Division B uses in the production of its product. Variable cost per widget is $0.95; full cost is $1.40. Comparable widgets sell on the open market for $1.90 each. Division A can produce up to 1.80 million widgets per year but is currently operating at only 50 percent capacity. Division B expects to use 90,000 widgets in the current year. Required: 1. Determine...
Activity 2: Pablo and Paige (Power in Relationships) After reading the conversations, answer the following questions:...
Activity 2: Pablo and Paige (Power in Relationships) After reading the conversations, answer the following questions: Analyze the role power plays in this relationship. Hint: think of distributive (either/or), integrative (and/both), or power denial. Identify Paige’s RICE currencies. Identify Pablo’s RICE currencies. Who occupies a higher power position and lower power position in conversation 1? Make sure to give concrete reasons to support your answer. Who occupies a higher power position and lower power position in conversation 2? Make sure...
You are going to set up a small shopping system, where you are going to implement...
You are going to set up a small shopping system, where you are going to implement a "shopping bag" subject to the following specifications: Each item that will be placed in the bag needs three pieces of data included: a descriptive name, an item code (2 letters followed by two numbers), and price (in US dollars). You will implement items as a separate class, where these three properties are private, and there are mutators and accessors for all three properties,...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT