Subject: Concrete technology Q: a)What are the disadvantages of using calcium chloride in Portland cement concrete without and with reinforcement? b)What are the main differences between plasticizers and superplasticizers

Subject: Concrete technology Q: a)What are the disadvantages of using calcium chloride in Portland cement concrete without and with reinforcement? b)What are the main differences between plasticizers and superplasticizers

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter20: Design Of Rigid Pavements

Section: Chapter Questions

Problem 1P: Portland cement concrete consists of what four primary elements?

See similar textbooks

Related questions

Q: To test the compressive strength of cement mortar, three 2” cubes were cast with three different…

A: Given: Length of mortar cubes = 2 in Mix No. w/c Ratio Cube No. Maximum Load (lb) 1…

Q: Discuss five different desirable characteristics of aggregate used in portland cement concrete.

A: The five different desirable characteristics of aggregate used in portland cement concrete are as…

Q: Create a design mix using the ACI DESIGN MIX PROCEDURE with the following parameters: Non-air…

A: Design of concrete mix for 35 MPa Assuming 5 percent of results are allowed to fall below specified…

Q: adhesion between cement and aggregate paste more important in highly resistant concrete 5- Why is it…

A: 1.) Temperature changes could cause cracks or sapling, distress, and aggregate expansion which leads…

Q: Q1- What is the purpose of using cement-sand mortar rather than cement paste for determining the…

A: Q-1 Using only cement to make mortar has many of problems. Like - -large amount of shrinking of…

Q: If a water reducer is added to the concrete mix without changing other ingredients, what will happen…

A: The water reducer, we can also say it as superplasticizer, by adding this of correct proportion we…

Q: Design a concrete mix which is already solved by using Eprical Formulas according to ACI and TS and…

A: Consider the example for designing A concrete mix required for construction of an industrial…

Q: If the degree of hydration=D55% and the weight of cement 100gm, the volume of gel water equal to *

Q: (b) All basic chemical composition of Portland cement reacts with different rate of hydration. List…

Q: explain wet and dry process in manufacturing of cement. which process is more environment friendly…

A: (1) calcareous and argillaceous materials are crushed separately (2) then materials are finely…

Q: A concrete mix should contain 305 kg/m3 cement and have a water-to-cement ratio of 0.49. How much…

Q: Review and explain the influences on the workability and compressive strength of concrete where the…

Q: A project specifies a concrete strength of at least 20.7 MPa. Materials engineers will design the…

A: Given: Specified compressive strength of concrete, f'c= 20.7 MPa Standard deviation, s = 2.4 MPa.

Q: It is important for the engineer to understand the basic properties of hardened portland cement…

A: The properties of hardened concrete are; Durability. Mechanical strength Fire resistance. Impact…

Q: Water Absorption Calculations Table 1 shows the proportions of concrete making materials required to…

Q: Be familiar with the properties of Portland cement and their effect on concrete.

A: Answer Properties of Portland cement Final setting time= 275 min Finneness= 330 kg/m2 Soundness=…

Q: 1. Following data are given for designing a Portland cement concrete mix for a nonstructural…

A: Note:- Hi, thank you for the question. As per our Honor code, we are allowed to attempt the first…

Q: 2. A yield measure with a volume of 0.248 ft has a weight of 7.69 lb. When filled with a sample of…

Q: Explain pozzolanic reaction with hydration products and its effects on hardened concrete properties

A: Pozzolanic material are siliceous and aluminium material in which themselves posses little or no…

Q: discuss the disadvantages of lumpy cement to concrete considering the permeability test

A: permeability test is generally the property of the soil which allows passage of fluid through it.…

Q: (b) If you were to choose a blended cement for a concrete structure in a marine environment, which…

A: Types of Cements are: Low heat cement. Rapid hardening cement Extra Rapid hardening cement. Quick…

Q: 2. Calculate the gel/space ratio and theoretical strength of a sample of concrete made with 500 gram…

A: The given data is: Cement=500 gm W-C ratio=0.5 Hydration=60%

Q: gates is 2:1. Water-to-cement ratio is 0.40. Percentage of the fly ash to the total cementitious…

Q: What are the main reasons of concrete segregation? What are the main causes of plastic shrinkage…

A: Solution: 1. Concrete segregation is defined as the process of separation of concrete into its raw…

Q: Discuss five different desirable characteristics of aggregate used in asphalt concrete.

A: The asphalt concrete consists of 92% to 96% of aggregates by mass in the concrete and 75% to 85% of…

Q: REQUIREMENTS: CONCRETE MATERIALS (CLASS A) -bags cement -m° sand -m° gravel -gallons water

Q: An air-entrained concrete mix is required for a structure that is severely exposed to sulfate.…

Q: Meaning of physical test of cement

A: Cement is extremely fine material having adhesive and cohesive properties which is used to bind the…

Q: The water–cement ratio is important because it influences all of the desirablequalities of…

A: We are authorized to answer three subparts at a time since you have not mentioned which part you are…

Q: Discuss on the selection of two (2) suitable admixtures to be used.

A: 80Mpa indicates High strength concrete Why we need high strength concrete? To construct high rise…

Q: compute for the corrected amount of water needed in the concrete mix if the mass and fine coarse…

Q: Q1 (a) Hydration process of cement has significantly influence in producing good quality of…

A: When cement, moisture, aggregates, and chemicals are combined, a large amount of heat is generated.…

Q: What are the five primary types and functions of portland cement? Describean application for each…

A: Cement within various characteristics needs various mortar applications. To speed up the building…

Q: Subject: concrete technology Note: provide detailed answer 1- What is the difference between an…

A: Note- We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

Q: (b) Concrete should be cured immediately after demoulding to promote the hydration of cement. List…

A: Curing is defined as the process that controls the loss of moisture from the concrete after it has…

Q: Three mortar mixes were prepared with water to cement ratios of 0.50, 0.55, and 0.60. Three 2-in.…

A: Given: Width of mortar cubes = 2 in

Q: A. Differentiate between plain and reinforced concrete; why concrete is reinforced? B. What is the…

A: Question is based on concrete technology . In the question we have to differentiate between…

Q: What do you mean by the workability of concrete; why do we need workable concrete? b) How…

A: Amount of water required to produce full compaction is called as workability of concrete. We need…

Q: What are the typical deleterious substances in aggregates that affect portlandcement concrete?…

A: The typical deleterious substances in aggregates that affect portland cement concrete are: Organic…

Q: State and explain the qualities of good cement.

A: It is always desirable to use the best quality cement in the various constructions. Therefore, all…

Q: Find the following, for 100g of anhydrous cement with a specific gravity of 3.15 and w/c ratio of…

A: Determine the volume of solids, volume of hydrated paste, volume of capillary porosity, and percent…

Q: If 50 kg of fine aggregates and 100 kg of coarse aggregates are mixed in a concrete whose water…

A: Given data- finne aggregate=50 kgcoarse aggregate=100 kgwater cement ratio=0.6To find-Weight of…

Q: What are the disadvantages of using calcium chloride in Portland cement concrete without and with…

A: Hi! Thank you for the question As per the honor code, We’ll answer the first question since the…

Q: what is the value of gel porosity in concrete ?

A: Brief Concept Introduction: Concrete: It is the mixture of cement (binding material), aggregates,…

Concept explainers

Types of Cement

Cement is a fine mixture of limestone, chalk, or marl and clay which when mixed with water, becomes compacted due to the formation of strong molecular bonds. Due to hydration, cement turns into a hard mass when left for a sufficient amount of time upon mixing with water. The water turns the cement compounds into gel-like submicroscopic particles having higher surface areas. It is due to the hydration properties of cement, they are often known as hydraulic cement. For instance, Portland cement is a popular example in this category.

Question

100%

Subject: Concrete technology

a)What are the disadvantages of using calcium chloride in Portland cement concrete without and with reinforcement?

b)What are the main differences between plasticizers and superplasticizers

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

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

Portland cement concrete consists of what four primary elements?
Subject: concrete technology Question:1 a) Which cement would you not use with calcium chloride? b) Explain the mechanism of action of retarders? c) What are the advantages of using calcium chloride with Portland cement concrete?
Subject: concrete technology Note: provide detailed answer 1- What is the difference between an additive and an admixture? 2- Which cement would you not use with calcium chloride? 3- Explain the mechanism of action of retarders? 4- What are the advantages of using calcium chloride with Portland cement concrete?
Q a) What are the disadvantages of using calcium chloride in Portland cement concrete without and with reinforcement? b) What are the main differences between plasticizers and superplasticizers. SIR, PLS GIVE ME PROPER AND CORRECT ANSWER WITH DETAIL.
Explain and interpret the effects of the water/cement ratio in concrete, the fineness of the cement used in concrete production, and the maintenance applied to the concrete after concrete pouring, on strength and durability.
Subject concrete technology Q: a)What particular precautions would you take when concreting (i) In winter, and (ii) in hot weather? b)What are the effects of hot weather on fresh concrete?
Concrete with a low water/cement ratio is expected to be: A) Stronger than concrete with a high water/cement ratio. B) More durable than concrete with a high water/cement ratio. C) More watertight than a concrete with a high water/cement ratio. D) All of the above statements.
Please answer the ff. problem 1. What are the typical uses of structural steel?2. Why is reinforcing steel used in concrete? Discuss the typicalproperties of reinforcing steel.3. Briefly discuss four heat treatment methods to enhance theproperties of steel. What are the advantages of each treatment?
What are the five primary types and functions of portland cement? Describean application for each type.
A: Different types of plasticizers in concrete and determine their effect on fresh concrete B: Find their slump values and setting times of each type. Also do comparison and give remarks
what are the effects of alkaline solution on the performance of geopolymer concrete?
Subject: Concrete Technology please provide detailed solution. Q#2: a) What are the main differences between plasticizers and super plasticizers? b) What is pozzolanic material; what benefits can be achieved by using Pozzolana with cement in concrete?