M20 vs M25 Concrete: Which Grade Should You Use for a Slab?
Exposure decides it, not span. What IS 456 actually requires, and what a nominal 1:1:2 mix really costs in cement.
Topic
Concrete
Grades, mix proportions, curing and the quality checks that decide whether a pour lasts. Every guide shows the formula, then applies it.
What Is Reinforced Cement Concrete
RCC combines cement, water, aggregates and steel reinforcement: the steel resists tension, the concrete resists compression. Where it is used and why.
Concrete Mixer, Types and Uses
The types of concrete mixer and where each is used: batch mixers with tilting, non-tilting and reversing drums, pan mixers, and continuous mixers.
Concrete Vibrator, Types and Uses
What a concrete vibrator does and the four types: needle, external formwork, surface or screed vibrators, and vibrating tables for precast work.
Water Cement Ratio
What the water cement ratio is, its usual 0.4 to 0.6 range, how it affects strength and workability, and the formula with a worked example.
Types of Concrete
Twenty-four types of concrete, from plain and reinforced to prestressed, air-entrained, shotcrete and ferrocement, with notes on typical uses.
Concrete Admixture and Its Uses
What concrete admixtures are and the two basic types: mineral admixtures such as fly ash and slag, and chemical ones like accelerators and retarders.
Concrete Mixing Water
Quality limits for concrete mixing water — dissolved impurities, pH, algae and sea water — and how chlorides, sulfates, oils and algae harm concrete.
7 Types of Concrete Admixtures
Concrete admixtures and their seven types: air entrainment, accelerators, retarders, superplasticizers, waterproofing, cement replacement, special-purpose.
What Is Concrete? Everything You Need to Know
What concrete is, where it is used and why, its ingredients from Portland cement to admixtures, and the precautions to take when placing it.