Materials For Civil And Construction Engineers In Si Units
4th Edition
ISBN: 9781292154404
Author: Michael S Mamlouk
Publisher: PEARSON
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Chapter 6, Problem 6.18QP
Two batches of cement mortar with properties as shown in Table P6.18. If mortar cubes are made from these batches, which batch do you expect to have larger compressive strength? Why?
TABLE P6.18
| Batch Number | Water-Cement Ratio | Superplasticizer Content |
| 1 | 0.5 | 0 |
| 2 | 0.5 | 1 fl oz/yd3 |
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Subject = Concrete technology
Q:
a) Why setting time test is performed on cement?
b) Explain and state visual stability index, if in slump flow test there occurs clear segregation and bleeding of halo greater than 10mm in self compacting concrete?
c) Propose suitable Methods of finding Workability of Dry, Normal and Self Compacting Concrete ? (Note: Write only names of Experiments)
Given the following data:Slump Requirement = 4"Max. Aggregate Size = 1.0"Water/cement Ratio = 0.55Mass of Cement = 350.91kg/m3Mass of the Coarse Aggregates= 1072 kg/m3Total Mass of the Concrete2375 kg/m°Compute for the mass of FineAggregates
Please discuss the Determination of Time of Setting of Hydraulic Cement by Vicat Aparatus
Chapter 6 Solutions
Materials For Civil And Construction Engineers In Si Units
Ch. 6 - What ingredients are used for the production of...Ch. 6 - What is the role of gypsum in the production of...Ch. 6 - What is a typical value for the fineness of...Ch. 6 - What are the primary chemical reactions during the...Ch. 6 - Define the C-S-H phase of cement paste.Ch. 6 - What are the four main chemical compounds in...Ch. 6 - Prob. 6.7QPCh. 6 - Define a. interlayer hydration space b. capillary...Ch. 6 - Prob. 6.9QPCh. 6 - The following laboratory tests are performed: a....
Ch. 6 - What is a false set of portland cement? State one...Ch. 6 - The watercement ratio is important because it...Ch. 6 - Discuss the effect of watercement ratio on the...Ch. 6 - Draw a graph to show the general relationship...Ch. 6 - Students in the materials class prepared three...Ch. 6 - Students in the materials class prepared three...Ch. 6 - Two batches of cement mortar with properties as...Ch. 6 - What are the five primary types and functions of...Ch. 6 - Why isnt pozzolan used with Type III cement?Ch. 6 - What type of cement would you use in each of the...Ch. 6 - In order to evaluate the suitability of nonpotable...Ch. 6 - Three standard mortar cubes were made using...Ch. 6 - Four standard mortar cubes were made using...Ch. 6 - Discuss the problem of disposal of waste water...Ch. 6 - State five types of admixtures and discuss their...Ch. 6 - Prob. 6.27QPCh. 6 - Under what condition is an air-entraining agent...Ch. 6 - If a water reducer is added to the concrete mix...Ch. 6 - Prob. 6.30QPCh. 6 - A concrete mix includes the following ingredients...Ch. 6 - The results of an experiment to evaluate the...Ch. 6 - The results of a laboratory experiment to evaluate...Ch. 6 - Referring to Table P6.34, Mix No. 1 was designed...Ch. 6 - Two batches of concrete cylinders were made with...Ch. 6 - Two batches of concrete cylinders were made with...Ch. 6 - What is the source of fly ash? Why is fly ash...Ch. 6 - A materials engineer is working in a research...Ch. 6 - A materials engineer is working in a research...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
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- Consider the following cements: Cement 1: CEM I 42.5 R with Blaine fineness of 3500 cm2/g Cement 2: CEM I 42.5 R with Blaine fineness of 3800 cm2/g Cement 3: CEM II/B-W 42.5 R with Blaine fineness of 3500 cm2/g Cement 4: CEM II/B-W 42.5 R with Blaine fineness of 3800 cm2/g (Assume that same clinker and mineral admixture is used in these cements) a) Which cement is supposed to be cheaper? Why? b) Which cement is supposed to be more suitable for hot weather? Why? c) Which cement is supposed to have the highest early strength? Why? d) Which cement is supposed to give less damage to the environment? Why?arrow_forwardWhat is the difference in the setup of VICAT APPARATUS in the normal consistency experiment and the time setting experiment. And why does the normal consistency experiment generate a lower initial penetration Why do we need to use a new batch of cement for each trial of the normal consistency experiment instead of starting dry and just adding water till normal consistency is achieved.arrow_forwardFind the reading of the device for tensile testing of cement mortar in the unit KN if the cement mortar's tensile strength is 1.5Mpa and the dimensions of the failure section are (2 * 2.3) cm²arrow_forward
- compute the finesnnes and average of the cementarrow_forwardProblem 2 . Calculate the density and the yield of cement slurry consisting of 65%class A cement (sp.gr= 3.14, 94 lb sack), 35% Pozlanic cement(sp.gr= 2.46,74 lb sack) mixed with 6% bentonite (sp.gr = 2.65) and 10.9 gal/sack fresh waterarrow_forwardchoose the correct answer The water/cement ratio needed to obtain zero porosity (Vcp=0) in a fully hydrated cement paste is: (Assume volume of cement =100 m3). (note: Vcp= Vec+Vcw) a- 0.42 b- 0.36 c- 0.50 d- 0.28arrow_forward
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