A) GIVE THE RESEAONS FOR THE FOLLOWING (THREE ONLY) 1- Pozzolanic cement can be used in mass concrete. 2- Clay and other fine materials are undesirable in aggregate. 3- Lime saturation factor (L.S.F) is limited with a specific rang of (0.66-1.02). 4- Bigger size of aggregate give high workability for fresh concrete. B) CHOOSE THE CORRECT ANSWER. 1- The types of aggregate according to its size are a) One type b) Two types c) Three types 2- Superplasticizers improve a) Workability of concrete b) Strength of concrete 3- Rounded aggregate improve a) Workability of concrete b) Strength of concrete d) Four types c) Both of these c) Both of these d) None of these d) None of these

A) GIVE THE RESEAONS FOR THE FOLLOWING (THREE ONLY) 1- Pozzolanic cement can be used in mass concrete. 2- Clay and other fine materials are undesirable in aggregate. 3- Lime saturation factor (L.S.F) is limited with a specific rang of (0.66-1.02). 4- Bigger size of aggregate give high workability for fresh concrete. B) CHOOSE THE CORRECT ANSWER. 1- The types of aggregate according to its size are a) One type b) Two types c) Three types 2- Superplasticizers improve a) Workability of concrete b) Strength of concrete 3- Rounded aggregate improve a) Workability of concrete b) Strength of concrete d) Four types c) Both of these c) Both of these d) None of these d) None of these

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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20 - 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.
5 - 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.
Design a Mix for the following Data. Specified strength = (99.5) MPa, Required Slump = 80 mmMaximum size of aggregate = 25 mm, FM of fine aggregate = 2.40Grading of aggregate as satisfied by ASTM C33 (American Society for Testing and Materials)SSD specific gravity of fine and coarse aggregate = 2.75Rodded bulk density of coarse aggregate = 1600 kg/cubic mAbsorption Capacity of coarse aggregate = 0.9 %Absorption Capacity of fine aggregate = 0.5 %Moisture Content of fine and coarse aggregate = 2 %Exposure Conditions = Normal
%VV @ docs.google.com Chose The Correct Answer - ۱۰:۳۳ ص Methods that reduce the loss of mixing water from the surface of the concrete can be done by Ponding or immersion Saturated wet coverings Membrane-forming curing compounds All of these Workability of concrete increases by using * Flaky aggregate Rounded aggregate Angular aggregate All f these Pozzolanic materials: * Asiacell.. Decrease segregation of concrete
Answer by true or false for the following If the number of the crushed particles in the fractured concrete is high, this means that the strength of aggregate is lower than the compressive strength of concrete. a- True b- False
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E,ZE,÷E=20oGpa SokN Find U,Vidispld Cement dnd Stresses ineach bar in FEM
If I have a coarse aggregate that is low fine modulus range of coarse aggregate, what will happen to the mix and what will happen to the structure as time passes?
What are the effects the unsoundness of aggregate on concrete? The physical causes of large or permanent volume changes of aggregate are------ Why the bulking of sand is affected in the case of volume batching? Why should not the shale, coal, mica and iron pyrites present in aggregate? Why should not the clay and fine materials present in excessive quantities in The bulking of sand depends on ---. and ------ aggregate? ( 2 reasons) Define the soundness of aggregate -and Define alkali-silica reaction What are the effects of alkali-silica reaction on hydrated cement paste? The rate of alkali-aggregate reaction depends upon-- -and ---- How to get rid of reactive silica Aggregate? Define sieve analysis • Why should the aggregate sample has to be air-dried before the sieve analysis is performed? Define fineness modulus of sand • What are the usefulness of determination of fineness modulus of aggregate? • What are the main factors governing the desired aggregate grading? • What are the…
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Hydration of cement is exothermic process that generates heat. The table below shows the heat generate with different cement components. Which component is recommended to build a dam wall which is a large amount of cement block? a. None of the above b. C2S only which generate less heat and less thermal stress c. A mixture of Low heat cements to avoid thermal stress and high energy released and other factors should be considered. d. C3A because it generates large amount of heat and dry the block faster.