What is the ratio of PQC?

A control mix for PQC was prepared with 400 kg/m³ of ordinary Portland cement (OPC) and water–cement (w–c) ratio of 0.40. Other concrete mixtures were then prepared by substituting 20%, 40%, 60%, 80% and 100% copper slag in control mix.

What is the ratio of dry lean concrete?

Mix Ratio of Lean Concrete

As far as Civil construction is considered, the ratio of concrete is 1: 3: 6 (M-10) and below, which is called lean concrete. Generally 1: 3: 6, 1: 4: 8 and 1: 5: 10 mixes are used for lean concrete mixes.

What is the slump value of PQC?

The slump value of PQC with natural CA was measured as 28 mm.

What is the PQC?

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 is the grade of concrete in PQC?

Generally it is designed in High Grade (M-35 to M-50) and designed for 32mm size aggregates and low slump. 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.

Technical specification road work PQC: Pavement Quality Concrete. Layer for road

What is M40 concrete mix ratio?

A Grade M40 concrete with a mix proportion of 1:1:2:0.35 (cement: sand: granite: water-to-cement ratio) was used for all concrete mixes.

What is lean mix concrete?

Lean concrete is a mix where the amount of cement is lower than the amount of liquid present in the strata. The higher the Aggregate/cement ratio, the leaner the concrete.

What is PQ concrete?

Pavement Quality Concrete (PQC) A cement concrete of a suitable quality for use as the surfacing on airfield pavements.

What is the slump of M40?

25–50 mm for pavement.

What is the mix ratio of M15 grade of concrete?

M15 concrete mix has a mix proportion of 1:2:4 of cement, fine aggregate, and coarse aggregate respectively. M15 – M represents Mix and 15 N/mm² is the characteristic compressive strength of concrete cube at 28 days.

What is concrete mix ratio?

Typically, a mix is about 10 to 15 percent cement, 60 to 75 percent aggregate and 15 to 20 percent water. Entrained air in many concrete mixes may also take up another 5 to 8 percent.

What is the minimum thickness of lean concrete?

The mudmat provides a working surface for the construction of the concrete foundation mat; the mudmat has a minimum thickness of 12 inches of un- reinforced concrete.

What is M20 M30 M40 concrete?

The M describes the Mix design of concrete while the strength digits in N/mm2. Therefore concrete is known for its compressive strength. There are different Grades of concrete such as M10 M15 M20 M25 M30 etc the usage of right concrete grades depends on advice given by the Structural engineer.

What is ratio of M35?

To find the design mix ratio, divide the calculated value of all materials by the weight of cement. Therefore Mix Ratio of M35 Grade concrete by weight is Cement : Flyash: F.A : C.A : Water = 1:0.4:2.6:4.46:0.58.

What is a 1 2 3 mix for concrete?

Concrete is made from cement, sand, gravel and water.

In making concrete strong, these ingredients should usually be mixed in a ratio of 1:2:3:0.5 to achieve maximum strength. That is 1 part cement, 2 parts sand, 3 parts gravel, and 0.5 part water.

What PSI is lean concrete?

Lean concrete base (LCB) is made with concrete aggregate and sufficient cement (about three sacks) to achieve a strength of at 500 psi (3.5 MPa) in seven days.

What is M25 grade concrete?

M25 grade concrete is made by mixing cement, sand and coarse aggregates in a 1: 1: 2 ratio ( 1 part is cement,1 part is sand and 2 part is cement) in which keeping the water-cement ratio between 0.4 and 0.6.

What is M35 concrete?

M35 means compressive strength of concrete after 28 days of curing is 35 MPA. The strength can be checked by cube test. Approximately 80 percent strength is achieved after 28 days. For flexural the formula is 0.7√fck. Fck is compressive strength of concrete ie desired grade.