Materials Science And Engineering Properties
1st Edition
ISBN: 9781111988609
Author: Charles Gilmore
Publisher: Cengage Learning
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Chapter 12, Problem 27CQ
To determine
The reaction which bonds the Portland cement and the aggregate to form concrete.
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This refers to a change from liquid state to solid state of cement paste.
Although the constituents of concrete (aggregate and hydrated cement paste) behave in a linear elastic manner if stress is applied to them and the resulting strain is measured, concrete is not a linear elastic material throughout its entire stress-strain curve. What is the main reason for the deviation from this behavior?
Interfacial transition zone (ITZ)
Incomplete hydration of cementitious phases
The loading rate applied according to ASTM C 39
presence of C-S-H very close to the aggregate/paste interface
What is the weakest property of concrete?
The compressive strength of the coarse aggregate
The compressive strength of the cement paste
The bond between the cement paste and the aggregate
The shear strength of the coarse aggregate
Chapter 12 Solutions
Materials Science And Engineering Properties
Ch. 12 - Prob. 1CQCh. 12 - Prob. 2CQCh. 12 - Prob. 3CQCh. 12 - Prob. 4CQCh. 12 - Prob. 5CQCh. 12 - Prob. 6CQCh. 12 - Prob. 7CQCh. 12 - Prob. 8CQCh. 12 - Composite _________ is produced by laying fibers...Ch. 12 - Prob. 10CQ
Ch. 12 - Prob. 11CQCh. 12 - Prob. 12CQCh. 12 - Prob. 13CQCh. 12 - Prob. 14CQCh. 12 - Prob. 15CQCh. 12 - Prob. 16CQCh. 12 - Prob. 17CQCh. 12 - Prob. 18CQCh. 12 - Prob. 19CQCh. 12 - Prob. 20CQCh. 12 - Prob. 21CQCh. 12 - Prob. 22CQCh. 12 - Prob. 23CQCh. 12 - Prob. 24CQCh. 12 - Prob. 25CQCh. 12 - Prob. 26CQCh. 12 - Prob. 27CQCh. 12 - Prob. 28CQCh. 12 - Prob. 1ETSQCh. 12 - Prob. 2ETSQCh. 12 - Prob. 3ETSQCh. 12 - Prob. 4ETSQCh. 12 - Prob. 5ETSQCh. 12 - Prob. 6ETSQCh. 12 - Prob. 7ETSQCh. 12 - Prob. 8ETSQCh. 12 - Prob. 9ETSQCh. 12 - Prob. 10ETSQCh. 12 - In Example Problem 12.1, a uniaxial composite...Ch. 12 - Prob. 12.2PCh. 12 - Prob. 12.3PCh. 12 - Prob. 12.4PCh. 12 - Prob. 12.5PCh. 12 - Prob. 12.6PCh. 12 - Estimate the transverse tensile strength of the...Ch. 12 - Prob. 12.8PCh. 12 - Prob. 12.9PCh. 12 - Prob. 12.10PCh. 12 - Prob. 12.11PCh. 12 - Prob. 12.12PCh. 12 - Prob. 12.13PCh. 12 - Prob. 12.14PCh. 12 - Prob. 12.15PCh. 12 - Prob. 12.16PCh. 12 - Prob. 12.17P
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- Which of the following statements is correct? A) Pozzolans react with Calcium Silicate Hydrate (C-S-H) to form Calcium Hydroxide (C-H) B) Pozzolans react with the by-product of cement hydration to produce a denser concrete C) Use of pozzolans in a mix generally improves the durability and strength of the concrete D) b and carrow_forwardAny potable water is suitable for making concrete. However, some nonpotable water may also be suitable. Sometimes, concrete suppliers will use unprocessed surface or well water if it can be obtained at a lower cost than processed water. However, impurities in the mixing water can affect concrete set time, strength, and long-term durability. In addition, chloride ions in the mixing water can accelerate corrosion of reinforcing steel.arrow_forwardWhich of the following directly causes sulfate attack in concrete? CH Delayed ettringite formation CO2 C-S-Harrow_forward
- If a water reducer is added to the concrete mix without changing other ingre-dients, what will happen to the properties of the concrete? If the intention ofadding the water reducer is to increase the compressive strength of hardenedconcrete, how can this be achievedarrow_forwardRate of Tricalcium silicate (C3S) is higher in Type III cement.arrow_forwardWhich compound of cement is responsible for strength of cement? a. Magnesium oxide b. Silica c. Aluminaarrow_forward
- The quality of aggregate packing affects: a) Cement use b) Slump c) Corrosion d) Early crackingarrow_forwardWater/cement ratio of concrete is the ratio of Volume of water to the volume of cement Volume of water to the weight cement Weight of water to the weight of cement Weight of water to the volume of cement (a) (b) (c) (d)arrow_forward5 - Why dolomitic aggregate is not preferred in concrete.A) Increases the vacancy rate.B) It creates expansion.C) AllD) Because it is inertE) Increases permeability.arrow_forward
- The ability of cement particles to maintain their shapes is attributed to the covalent bond * True Falsearrow_forward20 - Which of the following does not occur if the material under 63 micron exceeds 4% in the aggregate.A) The need for water increases.B) Workability increases.C) No problem occurs.D) Strength decreases.E) The need for cement increases.arrow_forwardThe concrete strength. Concrete becomes more brittle and v tends to decrease as the concrete strength increases.arrow_forward
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