Sage-Tips

What is PQC in road construction?

PQC stands for Pavement Quality Concrete made with larger size aggregates following IRC specifications and laid over a Dry Lean Concrete(DLC), concrete subbase course. PQC construction is explicitly used for highway concrete pavements and runway pavements to take heavy loads.

What are the methods of concrete road construction?

Continuous Bay Method In this method of construction, all the slabs or bay (as shown in fig) of a strip are constructed continuously without any break from one end to other. In continuous bay method construction joints are provided when the day’s work is not ended at the specified joint.

What is pavement construction?

Pavements are a form of exterior surface covering, typically raised and used by pedestrians, running parallel to, and on either side of a road. Pavements can be constructed using asphalt, concrete, flagstone, cobblestone, artificial stone, bricks, tiles and timber.

What is pavement quality concrete?

Pavement Quality Concrete (PQC) is cement concrete made with large size aggregates in accordance with IRC specifications and laid over a dry lean concrete sub-base. This construction is used specifically for highway concrete pavements and for airport runway pavements as it can take heavy loads.

What does PQC stand for?

PQC

Acronym	Definition
PQC	Protein Quality Control (biology)
PQC	Picture Quality Control
PQC	Post-Qualifying Consortium (various organizations)
PQC	Partial Quality Control

Which method is used for placing of cement concrete in case of cement concrete pavement construction?

Explanation: (1) Alternate bay method: In this method of construction, bays or slabs are constructed in alternate succession (ABCE), leaving the intermediate bays (A’B’C’D’) as shown in figure.

What is a concrete pavement?

Definition: a layer of concrete on such areas as roads, sidewalks, canals, playgrounds, and those used for storage or parking.- ACI Concrete Terminology. Concrete pavement is continuously subjected to traffic and, in some cases, severe climatic conditions.

Is pavement made of concrete?

Concrete is a fundamental material for airport runways, highways, and streets. Concrete pavements are used for general paving needs such as driveways, parking lots and playgrounds.

How is concrete road made?

Concrete roads fall under the category of high quality/superior type of roads built with cement concrete. These pavements may or may not be provided with sub-base/base courses, and they may be constructed directly over a well-compacted soil subgrade.

What are the two methods to construct the cement concrete slab?

2. What are the two methods to construct the cement concrete slab? Explanation: There are two modes of construction used in the construction of rigid pavements. They are alternate bay method and continuous bay method.

What is PQC quality?

Pavement quality concrete is that concrete which is used mostly for highway and road construction and it differs from normal conventional concrete by using 32 mm size aggregate.

Which method is commonly used for placing the cement concrete in the road?

(1) Alternate bay method. (2) Continuous construction method. Explanation: (1) Alternate bay method: In this method of construction, bays or slabs are constructed in alternate succession (ABCE), leaving the intermediate bays (A’B’C’D’) as shown in figure.

What is PQC concrete?

Pavement Quality Concrete (PQC) is cement concrete made with large size aggregates i.e. 32mm, in accordance with IRC specifications and laid over a dry lean concrete sub-base. This construction is used specifically for highway concrete pavements and for airport runway pavements as it can take heavy loads.

What are the materials required for construction of PQC road?

Materials Required :- The Following materials are required for Construction of PQC Road.. Ordinary Portland Cement (IS 269), Portland Pozzolana Cement (IS 459) & Portland Slag Cement (IS 1489) Can be used for PQC. Crushed Aggregates with Max size 32mm can be used as per IS:383.

What type of work is required for a concrete pavement?

The work shall consist of construction of unreinforced, dowel jointed, plain cement concrete pavement in accordance with the requirements of specifications and in conformity with the lines, grades and cross sections shown on the drawings or as directed by the engineer.

Which grade of concrete is used for road construction?

Pavement Quality Concrete is a concrete which is used now a days for most type of Road Contraction works. Generally it is designed in High Grade (M-35 to M-50) and designed for 32mm size aggregates and low slump.