Identify the correct response (s) in the following questions. Please note that there may be more than one 'correct' response. About 70% to 80% of cement is contributed by C3A and Tricalcium alumino ferrite Tricalcium Aluminate and C4AF Tricalcium silicate and C2S C3S and Dicalcium silicate The process of conversion of plastic concrete to solid stage is called Hydration Hardening Curing Setting

Identify the correct response (s) in the following questions. Please note that there may be more than one 'correct' response. About 70% to 80% of cement is contributed by C3A and Tricalcium alumino ferrite Tricalcium Aluminate and C4AF Tricalcium silicate and C2S C3S and Dicalcium silicate The process of conversion of plastic concrete to solid stage is called Hydration Hardening Curing Setting

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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The relative amounts of the four chemicals in the final cement depends on the desired properties of the cement concrete. The table below gives the typical compound composition of different types of Portland cements Compound Composition No. C3S C,S C3A C4AF 1 60 13 9. 8 40 40 4 3 26 50 5 12 4 50 24 11 5 42 33 5 13 Depending on the properties of the different chemicals and their relative composition, identify the high early strength (HE) and low-heat (LH) cements from the table. Give detail explanation for your answer
Given the four concrete mixes as shown in the table below, one without water reducers and three (c1-c3) with water reducer. The most economic mix where the workability and compressive strength maintained as for the original mix (the mix without water reducers) is With water Reducer Without water Reducer C1 C2 C3 Cement, Kg/m3 850 765 850 850 Water, Kg/m3 465 419 370 465 Slump, mm 50 S1 50 S2 Compressive Strength (MPa) 38 fc1 fc2 fc3 Select one: O A. C3 О В. С2 О С.С1 O D. C1 and C2
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%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
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Designing a concrete that will be exposed to groundwater, the chemical analysis of which is given in Table 1. is requested. a) For 1 m3 of concrete, assuming the air gap is 1%, according to the relevant impact class specified in TS EN 206 Calculate the amount of material needed. (Maximum grain size of A1, A2, A3 aggregates to be used in the mixture) has a diameter of 16 mm and is in SDYK state, and the physical properties and mixing ratios of the aggregates are given in Table 2.) b) The ratio of cement kneading water to be used in production is 28%, volumetric shrinkage of cement paste Calculate the shrinkage that will occur in the concrete, assuming that the absolute volume of cement is 1%. from shrinkage Find the tensile stress that will occur in the concrete due to Whether cracks will occur in the concrete due to shrinkage, Considering the static elasticity modulus (secant modulus) of the concrete given below in the “stress-strain” diagram. take it and check it. Note: In the…
please provide step by step solutions and draw the lever on the graph as well. i know the answers. (c) About 1250 C (d) Fe3C, cementite (e) About 0.7 wt% C, about 72% (f) About 40%, no. (h) Draw the microstructure of a 1.5 wt.% C material that has been heated to 1200 C and then slowly cooled to 600 C. Clearly label all phases.
Please answer the problem. You can summarize your answer. Thank you and Godbless. Comment on the results. Compare the results with the typical values. How can the percentage of absorption affect on a concrete mix?
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The materials engineer made a design mix of the following masses of material that are required for 1 m³ of concrete. Material Batch mass, kg Cement 260 Fly ash SSD sand (absorption 1.5%) SSD coarse aggregate (absorption 1.0%) 1160 Mixing water 90 599 148 However, during construction, the available stockpiled sand has a total moisture content of 5.5% and the coarse aggregate has a total moisture content of 2.5%. Compute the adjusted sand (fine aggregate) mass in kg. Express your answer with 2 .decimal places.
why do we need to know the Specific Gravity and Absorption of Fine Aggregate, Surface Moisture of Fine Aggregate, and how it is important in concrete
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.