Products — Cementos Molins

DRAGÓN SR

CEM I 42,5R-SR 5

Technical advisor:
+34 936 806 030
sat@cmi.cemolins.es

Loading Service:
24-hour bulk-cement dispatch
In bags from 6 am to 5 pm

Delivery:
Flexible times

Product description

Our DRAGON SR is a cement with medium-high final strength, designed mainly for use in aggressive sulphate conditions in soils, in water and marine environments.

SPECIAL FEATURES

Low tricalcium aluminate contents

High final strengths
Low fineness, requiring less water.

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TECHNICAL CHARACTERISTICS

	Typical values	Specifications according to standard and instruction
Clinker(%)	96	min. 95 - max. 100
Limestone(%)	4	min. 0 - max. 5
Minor component (%)

Chemicals
Loss on ignition (%)	2,5	max. 5
Sulphate, SO3 (%)	3,0	max. 3,5
Chlorides, (CI) (%)	0,05	max. 0,10
Insoluble residue (%)	0,06	max. 5,0
Tricalcium aluminate, (C3A) (%)	3,5	max. 5.0 (in the clinker)

Physical characteristics
Blaine specific surface (cm2/g)	3300	-
Le Chatelier expansion (mm)	0,5	max. 10
Start of setting (min)	150	min. 60
End of setting (min)	220	max. 720

Mechanical characteristics
Compression after 1 day (MPa)	26	min. 20,0
Compression after 28 days (MPa)	52	min. 42,5 - max. 62,5

DISPATCH AND STORAGE

In 25 kg bags and bulk.
Bulk cement must be stored in watertight silos.

The bags must be tightly closed and stored in a cool, dry and well-ventilated place, protected from draughts and away from the floor and walls.

PARTICULARLY RECOMMENDED FOR:

Any concrete susceptible to sulphate attack, whether on land or in waters.

Maritime works in aggressive or very aggressive circumstances. Reinforced concrete, prestressed concrete. Prefabricated elements in general, especially for structural elements, whether prestressed or not.

NOT FOR USE IN:

Compacted dry concrete.

PRECAUTIONS FOR USE IN WORKS:

Given, the high content of clinker of this cement, it is very important to pay attention to the curing process, especially in hot, dry and occasionally windy climates.