Mixing of Concrete

Question 1

principles of concrete mixing

Answer 1

workability
strength
durability
cohesiveness

Question 2

the purpose of concrete mixing is to select an

Answer 2

optimum proportion of cement, water, and aggregates.

Question 3

the proportion process in concrete mixing through actual trial and adjustment would be as follows:

Answer 3

1. water-cement ratio (strength and durability)
2. aggregate-cement ratio (workability)

Question 4

is the most important consideration in mixing because it influences not only the strength and durability of the concrete but also workability of fresh concrete

Answer 4

water-cement ratio

Question 5

concrete mixture may be classified as either:

Answer 5

1. design mixture (contractor)
2. prescribed mixture (designing engineer)

Question 6

concrete proportion

Answer 6

1. by volume
2. by weight method

Question 7

is the process where it involves weighing out or measuring out all of the ingredients for a batch of concrete

Answer 7

batching

Question 8

is used for concrete mix in a continuous mixer, and the mobile concrete mixer (crete mobile) where weighing facilities are not at hand

Answer 8

volumetric batching

Question 9

two methods of concrete mixing

Answer 9

1. hand mixing
2. machine mixing

Question 10

types of concrete machine mixer

Answer 10

1. tilting drum mixer
2. reversing drum mixer

Question 11

is used to blend semi dry concrete and plastic

Answer 11

tilting drum mixer

Question 12

is a type of concrete mixer that produces concrete in single batch also commonly called a non-tilting mixer

Answer 12

reversing drum mixer