APPLICATION OF INDUSTRIALLY PRODUCED LC3 TO HEAVY DUTY PAVEMENTS

Objective: To design, construct and evaluate the performance of LC3 based heavy duty concrete roads with RCC, steel fiber reinforcement and polypropylene fiber reinforcement.

• Industrially produced LC3 was used for constructing the pavements. • The stretches have a movement of average 30-40 heavy duty trucks daily

Materials

Material Steel fiber Polypropylene fiber Steel Make BEKAERT BONAR TATA Type DRAMIX RC 80/60 Durus S 400 and

Fibrin XT 10 mm. Dia.

Photographs

Mix design

Grade of concrete

Cement (kg./m3)

Sand (kg./m3)

C.A. 20mm.

(kg./m3))

C.A. 10 mm.

(kg./m3))

Water (kg./m3)

Chemical Admixture

(% wt. of cement)

w/b Ratio

M35 450 618 711 436 172 1.1% 0.38

Workability

Type of concrete

Grade

Average Slump Value (in mm)

Without SP Without Fibre

Without SP With Fibre

With SP With Fibre

PP fiber based concrete M35

190 114 154 Reinforced cement concrete 145 N/A 170 (without fibre) Steel fiber reinforced concrete 170 154 160

Strength results

Type of Concrete Grade Average Compressive Strength (MPa)

Average Flexural Strength (MPa)

7 Day 28 Day 28 day PP fiber based concrete M35 31.4 39.36 Samples not cast Reinforced cement concrete M35 30.1 39.2 5.31 Steel fiber reinforced concrete M35 31.5 41.6 7.57

Key Features observed

• With high slump, LC3 concrete remains flow-able in nature without using any viscosity modifying agent. • LC3 can be used for making self-compacted concrete.

Photographs

PRODUCTION OF BUILDING MATERIALS

• Paver blocks of various sizes and hollow concrete blocks were produced using industrially produced LC3 replacing Ordinary Portland Cement

• A fully automatic manufacturing unit was used to produce these products • No difficulty was observed during the entire process.

Photographs: Various stage of building material production

Manual filling of LC3 into transport tray Automated batching of raw materials

Automated mixing of raw materials Placement of moulds

View of building materials

Environmentally controlled curing chamber Storage of final building material