Engineered Ready Mix Concrete in Rickmansworth
High-performance ready mixed concrete batched directly on your site in Rickmansworth and the WD3 area. Exact volumetric quantities, certified structural strengths from C10 to C45, and zero disposal waste.
Standard Concrete Grades & Applications
Every building project requires specific compressive strength, durability ratings, and water-cement ratios. Below is our complete British Standard mix design guide for domestic, commercial, and groundworks installations across Rickmansworth:
| Designation | 28-Day Strength | Typical Applications in Rickmansworth | Slump Class |
|---|---|---|---|
| C10 / GEN 1 | 10 N/mm² | Drainage encasement, blinding layers, unreinforced kerb backing & trench base bedding. | S1 / S2 |
| C15 / GEN 2 | 15 N/mm² | Domestic paving sub-bases, conservatory dwarf wall footings, interior void fill. | S2 / S3 |
| C20 / GEN 3 | 20 N/mm² | Garage bases, garden shed slabs, unreinforced strip footings, greenhouse foundations. | S3 (100-150mm) |
| C25 / FND 2 | 25 N/mm² | Reinforced house extension foundations, trench-fill footings, retaining walls, raft slabs. | S3 (100-150mm) |
| C30 / PAV 1 | 30 N/mm² | Heavy-duty domestic driveways, commercial yards, reinforced patios, freeze-thaw exposed slabs. | S3 / S4 |
| C35 / PAV 2 | 35 N/mm² | Industrial workshop floors, heavy commercial vehicle loading bays, agricultural yard paving. | S3 / S4 |
| C40 / RC 40 | 40 N/mm² | Structural suspended slabs, pre-stressed foundations, water-retaining structures, piling caps. | S3 / S4 |
Custom Admixtures & Performance Enhancers
Because our volumetric mobile mixers blend dry ingredients directly at your Rickmansworth site, we can introduce specialized performance admixtures into the mixing auger to achieve precise workability and setting characteristics:
Polypropylene Structural Fibres
Micro and macro synthetic fibres disbursed uniformly throughout the concrete mix eliminate the need for crack-control steel mesh in standard slabs, reducing plastic shrinkage cracking by over 80%.
Setting Accelerators & Retarders
During cold winter pours, setting accelerators speed up early hydration to prevent frost damage. In hot summer weather, retarders extend open finishing time by up to 3 hours.
Waterproof & SBR Additives
Integral waterproofing admixtures block capillary pore channels, making the concrete completely impermeable to groundwater for basement retaining walls, swimming pools, and lift pits.
Plasticisers & Superplasticisers
Improves fluidity and self-levelling flow around dense steel reinforcement cages without adding excess water, preserving maximum structural compressive strength.
Slump Class Guide & Placement Workability
Slump represents the consistency and flow of wet concrete. We calibrate water-to-cement ratios on site to match your exact placement method:
Slump S1 (10-40mm)
Semi-dry mix, ideal for kerb laying, trench bedding, and slip-form paving.
Slump S2 (50-90mm)
Low workability mix for mass concrete pours, footpaths, and unreinforced strip foundations.
Slump S3 (100-150mm)
Standard medium workability for chute pours, trench fill, raft foundations, and slabs.
Slump S4 (160-210mm)
High fluidity mix designed for pump lines, heavily reinforced beams, and self-compacting applications.