lightweight concrete technology and · pdf file3 cellular concrete system lightweight concrete...

SIKA EGYPTENG. ASHRAF ELZINYTechnical & Export Manager

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

As a lightweight, low-viscous filling material for:

� Building as thermal insulating layer

(Measuring indicative thermal conductivity test in BS 874 part 3.2)

� Shutdown sewerage.

� Fill blocks, spaces around pipes, ……..etc.

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AREA OF APPLICATION

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Cellular Concrete System

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

Cellular Concrete - System

Foam Generator Foaming AgentConsulting

Production of Mortar and Concrete

with Preformed Foam

Ready Mixed

Mortar

Cellular

Concrete

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Lighter than water!

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

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Composition of Cellular Concrete

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

100

80

60

40

20

0

1,6 1,2 0,8 0,5

Dry unit weight in kg/l

Vol %

Foam

Sand

Cement

Water

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Cellular Concrete - Properties

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

Fresh Concrete Hardened Concrete

� flowable

� pumpable

� easy workability

� no compaction necessary

� Adjustable in unit weight and strength

� durable and stable in shape

� Thermal insulating

� higher resistance to fire

� increased shrinkage

� not decomposable

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Compressive Strength of Cellular Concrete Depending on Dry Unit Weight

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

0

2

4

6

8

10

12

14

16

0,4 0,6 0,8 1,0 1,2 1,4 1,6

Dry Unit Weight in kg/l

Co

mp

ressiv

e s

tren

gth

in

MP

a

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Components of Cellular Concrete

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

Type Usual Materials

cementCEM I 32,5 R

CEM I 42,5 R

fillerlimestone flour

fly ash

aggregatessand 0 – 2 mm

0 – 4 mm

foam agentSB 2 - Organic tenside

stabilizerST 3 - powder, (methyl cellulose)

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Mix Design of Cellular Concrete

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

Cement content 300 - 350 kg/m³

Water content150 l/m³ with foam generator SG 70

180 l/m³ with foam generator SG S 9

Foam unit weight0,03 – 0,06 kg/l with foam generator SG 70

0,03 – 0,05 kg/l with foam generator SG S 9

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Production on the Site

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

Concrete mixing plant

sand

cement water

(compulsory mixer)

On the site with foam generator SG 70

foam agent

SB 2 water

Foam production with foam

generator SG 70

Technical Data

Colour and state : blue-green liquid

Density (20oC): 1.04 g/cm³

Chloride content: < 0.1 %

Recommended dosage: 150 – 230 g / 100 l foam

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FOAM AGENT SB2

FOAM AGENT FOR THE PRODUCTION OF POROUS

LIGHTWEIGHT CONCRETE BY FOAMING METHOD

Foam Generator SG 70

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

Water hose

Connection

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Foam production with SGS 9

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

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Applications: Re-Filling of Trenches and Excavations

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

� filling of working spaces at the side of pipes

� avoiding consolidation settlement

street street

Cellular

Concrete

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Applications: Filling of Sewage Pipes

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

� Pouring directly in the shaft

� Complete filling of the cross-section

< 50 m

street

Cellular concrete

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Applications: Cellular Concrete below Basement Slab

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

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Applications: Filling between Floor Timbers

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION

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Applications: Roof Surface with Cellular Concrete as levelling layer

LIGHTWEIGHT CONCRETETECHNOLOGY AND APPLICATION