Concrete Transportation Methods

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What is a key requirement for the continuous operation of a concrete pump?

A batching plant with a large storage capacity

A constant supply of freshly-mixed concrete (correct)

A stationary mixer on the jobsite

A flexible hose at the end of the pump's rigid pipeline

Which type of truck mixer is often used for large construction projects?

Stationary mixer

Rear discharge mixer

Agitating mixer (correct)

Non-agitating mixer

What is a major advantage of using pipelines for transporting concrete?

They reduce the need for labor on the jobsite

They can handle large volumes of concrete

They eliminate the need for a central discharge point

They take up little space and can be readily extended (correct)

What is a potential concern when using a pump for transporting concrete?

The concrete may segregate during transportation Signup and view all the answers

What is the primary function of a batching plant?

To batch and mix concrete Signup and view all the answers

What should be carefully scheduled to keep a crane busy?

Trades and operations Signup and view all the answers

What is a key advantage of nonagitating truck batching, mixing, transporting, and handling concrete systems?

Lower cost of equipment compared to agitator trucks Signup and view all the answers

What is a crucial aspect of preventive maintenance for batching and mixing systems?

Good preventive maintenance program Signup and view all the answers

What is a primary use case for wheelbarrows and buggies in concrete construction?

Short flat hauls on onsite concrete construction Signup and view all the answers

What is a necessary condition for remixing concrete at a jobsite?

Water is added without exceeding the specified w/c-ratio Signup and view all the answers

What is a limitation of agitator trucks in concrete transportation?

Have higher equipment costs compared to nonagitating trucks Signup and view all the answers

What is a key consideration for transporting concrete using agitator trucks?

All of the above Signup and view all the answers

What is the primary difference between a central-mixed concrete and a shrink-mixed concrete?

The location where the mixing is completed Signup and view all the answers

What is the recommended number of revolutions for mixing concrete in a truck mixer according to ASTM C 94?

70 to 100 revolutions Signup and view all the answers

What is the purpose of a non-agitating truck in concrete transportation?

To transport the concrete without agitation Signup and view all the answers

What is the primary advantage of using a portable batch plant?

It can be used for intermittent production of concrete at jobsite Signup and view all the answers

What is the recommended speed for mixing concrete in a truck mixer according to ASTM C 94?

2 to 6 rpm Signup and view all the answers

What is the primary difference between a truck mixer and a mobile batcher mixer?

The purpose of the mixer Signup and view all the answers