AGGREGATES ARE USED FOR READY-MIX CONCRETES, ASPHALT, FOUNDATIONS AND SUB-FOUNDATIONS. CCB ALSO PRODUCES TREATED GRAVELS OBTAINED BY MIXING AGGREGATES, CEMENT, LIME AND FLY ASH.
AGGREGATES IN PRECAST
In the precast industry, concretes made with the CCB limestones stand out with the following characteristics:
Calcium reserve improving resistance to acids
Low expansion coefficient and better resistance to fire
Low thermal conductivity – insulation and fire resistant
Crushing index (100%) and shape of the aggregate enable an excellent set-up with optimal demoulding
Calibers: 2/4, 4/8, 6/10, 6/14, 2/8.
AGGREGATES IN ASPHALTS
As for cement concretes, the adherence properties of CCB’s limestone aggregates make them the ideal raw material for asphalts. CCB aggregates classification in category CII in line with the PTV 400 enables them to be used for category IV roads, binder and regulating courses. The sand 0/2 A5.0 II a Benor and the filler type IB Copro perfectly complement the asphalt formulas.
Calibers: 2/6, 6/10, 6/14, 14/20, 0/2 dry, washed and filler.
AGGREGATES IN READY-MIX CONCRETES
Because of its chemical composition and its physical properties, CCB limestone constitutes a first choice material in the manufacture of ready-mix concretes because it has good adherence and low thermal expansion properties. CCB offers a wide range of aggregates and Benor sand to optimise the grading range of the concrete.
The calcareous sand enables higher resistances to be obtained in rich concretes and a better bearing capacity in stabilised sands and lean concretes. The BENOR label guarantees the quality and consistency of the properties of our aggregates such as hardness, shape, fines content and grading curve.
Calibers: 2/6, 6/14, 6/20, dry and washed sands.
AGGREGATES IN FOUNDATIONS AND SUB-FOUNDATIONS
Sub-foundations: CCB offers grade calibers from 0 to 60mm combining all the qualities needed for this use: good bearing capacity, clean fines and good compacting behaviour. For this application our product range includes a Benor metalling of the type 0/20 Ca 4a f9.
Foundations: The calibers for foundations meet more stringent grading requirements. So they are made up from several basic calibers. CCB offers a wide range of products to meet current specifications or the Benor brand PTV 411. In addition, these products can be treated in order to obtain better compactability or higher bearing capacities.
Calibers: 0/4, 0/20, 0/32, 0/60 non treated and 0/4 or 0/20 cement treated (A).
AGGREGATES IN SPECIAL APPLICATIONS
Special aggregates: CCB has a range of some 50 different calibers.
The flexibility of the production tool enables new products to be developed for specific applications such as, for example, draining materials, 20/32 type III ballast, 0/20 for sports fields, etc.
Treated blends: A facility with a 500 ton per hour capacity enables precise mixes of up to 4 aggregate sizes and 3 types of additives to be performed. Treated blends comply with specifications and are regularly monitored by the laboratory.
Added filler: CCB also sells filler for concrete. This graded complement is used to:
Obtain a fatter concrete by associating it with an added plasticiser;
Obtain greater resistance during demoulding of “wetland” consistency concretes;
Improve short and long term resistance;
Obtain a better facing.
Finally, it is the ideal and almost indispensable complement in self-levelling concrete formulations.
Fillers for agricultural amendments: Through its composition (mainly its carbonate content), CCB’s filler is also suitable as an amendment for agricultural land since it neutralises acidic soils.
AVERAGE CHARACTERISTICS OF GAURAIN AGGREGATES
Real density: 2.7 t/m³
Bulk density: 1.22 to 1.63 t/m³ depending on the calibers
Polished stone value: (PSV) 0.43
Resistance to static compression for caliber 10/14: 15%
Micro-deval coefficient in the presence of water at caliber 10/14: 16
Los Angeles coefficient on caliber 10/14: 18
Flakiness Index (F.I.) on caliber: 6/10: 18 – 10/14: 16 – 14/20: 12