Introduction to Sustainable Civil Engineering Design
1st Edition
ISBN: 9780134013916
Author: Neumann
Publisher: PEARSON
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Chapter 1, Problem 5EDDS
To determine
Arrange the steps in the correct order and visually depict them with the help of a process flowchart similar to that of Figure 1.12.
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Question 4
What does the Specific Gravity of Fine Aggregate, Absorption of Fine Aggregate, and Surface Moisture of Fine Aggregate matter to engineering? and how it is essential in concrete.
All the following are operations involved in the production of concrete except:
Group of answer choices
curing
compacting
batching and mixing
placing, consolidating, and finishing
transporting
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Introduction to Sustainable Civil Engineering Design
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- Question Identify the correct sequence of the concrete manufacturing process by rearranging the order of the process shown below: Finishing Placing (Pouring) Curing Mixing Maintenance Mix design (proportioning) Vibrating (consolidating) Transporting Match each of these shrinkage regions (from I to V) with the 5 shrinkage mechanisms in the bullets Shrinkage (%) 90% RH Water loss from larger capillary pores Decomposition of C-S-H 0 Region N 25 Region IN Region III 55% RH .50 10% RH Structural water from C-S-H Region IV Region 0% RH 105°C Absorbed water loss Water loss from smaller capillary pores 200°C 1 0 6.25 12.5 18.75 25 Weight Loss (%) .75 Question 2 Mention five different methods of concrete curing. What will happen if concrete is not cured? Draw a graph showing the typical relation between the compressive strength and age for continuously moist-cured concrete and concrete cured for 3 days only. Label all axes and curves. Question 3 a) Provide a brief definition of the different…arrow_forwardIngredients other than cement and other cementitious materials, aggregates, and water, broadly referred to as admixtures, are often added to concreteto alter its properties in various ways.arrow_forwardWhy we need to know the Properties of Fine Aggregate and how it is important for concretearrow_forward
- Please perform an experiment and provide a report on Specific Gravity and Absorption of Fine Aggregate and cover the following details - ASTM Designation Purpose Significance and Use Apparatus Test Procedure Analysis and Results Reportarrow_forwardStudents in the materials lab mixed concrete with the following ingredients: 22.1 lb of cement, 41.6 lb of sand, 57.5 lb of gravel, and 14.3 lb of water. The sand has a moisture content of 3.2% and an absorption of 5.5%. The gravel has a moisture content of 3.9% and an absorption of 4.6%. Since water absorbed in the aggregate does not react with the cement or improve the workability of the plastic concrete,a.what is the water–cement ratio of this mix according to the American Concrete Institute’s weight mix design method? b. If a water–cement ratio of 0.5 is required using the same materials and ingredients but different amount of mixing water, what is the weight of the mixing water to use?arrow_forwardA concrete mix includes the following ingredients per cubic meter: Cement%3D400 kg Water=184 kg No admixture Table below shows possible alternatives mix ingredients. Indicate in the appropriate boxes in the table what will happen in each case for the workability and the ultimate compressive strength as increase, decrease or approximately the same. What will happen? Cement Water Admixture (kg) (kg) Ultimate compressive Workability strength 400 225 None 449 184 None Water 400 184 Reducer Water 400 128 Reducer 400 184 Super Plasticizer 400 184 Air Entrainer 400 184 Accelerator DFocusarrow_forward
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