TABLE P6.3 0 What Will Happen? Ultimate Compressive Strength Cement (kg) Water (kg) Admixture Workability 400 240 None 449 176 None 400 176 Water reducer 400 128 Water reducer 400 176 Superplasticizer 400 176 Air entrainer 400 176 Accelerator

TABLE P6.3 0 What Will Happen? Ultimate Compressive Strength Cement (kg) Water (kg) Admixture Workability 400 240 None 449 176 None 400 176 Water reducer 400 128 Water reducer 400 176 Superplasticizer 400 176 Air entrainer 400 176 Accelerator

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter4: Mechanical Processes

Section: Chapter Questions

Problem 4.11P

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Concept explainers

Types of Concrete

Concrete is the fundamental material used in civil engineering such as building materials for building structures. Concrete is an aggregate mixture of cement, sand, and fine and coarse rock pieces. The cement acts as a binding material that holds the compositions together, sets, and hardens with time. Apart from cement, there are other different types of binding materials used, such as lime concrete, bitumen, asphalt, and so on.

Question

A concrete mix includes the following ingredients per cubic meter:
a. Cement = 400 kg
b. Water = 176 kg
c. No admixture

Table P6.30 shows possible changes that can be made to the mix ingredi-
ents. Indicate in the appropriate boxes in the table what will happen in each

case for the workability and the ultimate compressive strength as increase,
decrease, or approximately the same.

TABLE P6.3 0
What Will Happen?
Ultimate Compressive
Strength
Cement (kg) Water (kg)
Admixture
Workability
400
240
None
449
176
None
400
176
Water reducer
400
128
Water reducer
400
176
Superplasticizer
400
176
Air entrainer
400
176
Accelerator

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