the cementproperties.Wateramount,C35: 40%, C2S: 30%,aggregate,admixtures,labour and C3A:10%, C4AF:curingconditionsC35: 52%, C2S: 19%,C3A: 9%, C4AF: 12%11%arethesame.Selecttheconcreteseries whichis expectedgivetohighercompressivestrength byconsidering Water/Cement%-D0.40 Water/Cement-D0.60thegivenparameters.Concretesareproducedwiththesamematerials. Select the series which is expected to give higher compressive strength and write the necessary explanations for each parameter in the following table.ExplanationaboutConcrete1st Concrete2nd ConcreteSeriesSelectedSeriesExplanationandSeries (1 or 2)MaterialsSelecttheconcreteseries whichis expectedgivehighercompressivestrength at 7toCEM I 32.5 NCEM 1 32.5 R...daysbyconsideringthe cementproperties.Wateramount,C35: 40%, C25: 30%,aggregate,admixtures,labourC35: 52%, C25: 19%,and C3A:10%, CAAF:C3A: 996, CAAF: 12%curingconditionsActivate Windows11%

The compressive strength of concrete is depends on parameter of cement and its content used, quality…

wwww wg the cement properties. Water amount, C35: 40%, C25: 30%, aggregate, admixtures, labour and C3A:10%, CAAF: C3S: 52%, C2S: 19%, C3A: 9%, C4AF: 12% curing conditions 11% are the same. Select the concrete series which is expected give to higher compressive strength by considering Water/Cement-0.40 Water/Cement3D0.60 the given parameters. Concretes are produced with the same materials.

wwww wg the cement properties. Water amount, C35: 40%, C25: 30%, aggregate, admixtures, labour and C3A:10%, CAAF: C3S: 52%, C2S: 19%, C3A: 9%, C4AF: 12% curing conditions 11% are the same. Select the concrete series which is expected give to higher compressive strength by considering Water/Cement-0.40 Water/Cement3D0.60 the given parameters. Concretes are produced with the same materials.

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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An air-entrained concrete mix is required for a structure that is severely exposed to sulfate. Given: Required strength 35 MPa; slump 80 mm; Coarse aggregate: 19 mm nominal maximum size. The amount of water required for this mix and the corresponding air content respectively are Select one: O A. 190 Kg and 2% O B. 184 Kg and 6% O C. 184 Kg and 3.5% O D. 205 Kg and 2%
19 - Which of the following does not affect the aggregate gradation in concrete?A) Special concrete productionB) StrengthC) Void ratioD) ShrinkageE) Hydration
compute for the corrected amount of water needed in the concrete mix if the mass and fine coarse aggregates are 740 kg and 1100 kg, and both have a natural moisture content of 2% and 1.5% respectively. water/cement ratio is 0.5 and the mass of ratio of concrete is 1:2:3
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.
Design a concrete mix for construction of an elevated water tank. Required Slump = 3”. Maximum Size of Aggregate is 19mm. The specified design strength of concrete is 30 MPa at 28 days measured on standard cylinders. The specific gravity of FA and C.A. are 2.65 and 2.7 respectively. The dry rodded bulk density of C.A. is 1600 kg/m3, and fineness modulus of FA is 2.80. Ordinary Portland cement (Type I) will be used. S.G. = 3.15 C.A. is found to be absorptive to the extent of 1% and free surface Fill out the table below.
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
Q2 a Good concrete can be achieved when it is well prepared. Explain the requirement during the preparation of concrete ingredients and concreting process to produce good quality of concrete.
%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
Which of the options are correct for a 3m³ of concrete having design mix proportion of 1:2:7 (by volume) A Volume of cement required = 0.318 m³ B No. of cement bags required = 15 C D Volume of coarse aggregate = 2.5 m³ Volume of water required = 1m³
We require a mix with a mean 28-day compressive strength of 40 MPa the size of the member and the spacing of the reinforcement require a slump of 45 mm and a maximum size of aggregate of 28 mm. Portland cement type I is used with specific gravity of 3.15, dry-rodded unit weight of coarse aggregate 1750 kg/m³ and bulk specific gravity (SSD) of 2.55. The fineness modulus of fine aggregate is 2.8 and bulk specific gravity (SSD) of 2.5 ,No air entrainment is required. Neglect water absorption and moisture content of both aggregates. The aggregates conform to the ASTM C33-84 requirements for grading. Estimate the quantity of (cement, fine aggregate, coarse aggregate and water) for 1m³ concrete.
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 achieved
For a design a concrete mix which is going to be used in Muğla the 28-day compressive strength of the concrete is required to be 30 MPa and slump of the fresh concrete is specified as 8-10 cm. Maximum size of the aggregate is 25 mm. Other necessary data are given as: Specific gravity of cement = 3.1 Bulk specific gravity of coarse aggregate = 2.68 Bulk specific gravity of fine aggregate = 2.64 Absorption capacity of both aggregates is 1.5% Fineness modulus of fine aggregate = 2.8 Dry rodded unit weight of the coarse aggregate = 1600 kg/m³ According to ACI 211 and based on absolute volumes: What should be the weight of SSD coarse aggregate in kg's? What should be the amount of mixing water in kg's? What should be the water to cement ratio? What should be the volume of dry rodded coarse aggregate per unit volume of concrete? What should be the air content in 96? What should be the SSD weight of fine aggregate in kg's? Seç Seç... Seç Seç... # Seç + Seç... # # + ÷