Indiacon Civil

Subjects › Materials and Construction

Concrete Technology

Ingredients, mixing, placing, curing and testing of concrete.

Topics by level

Basics

School, diploma and first-year level: the ideas in plain words.

Intermediate

Degree and exam core (GATE, ESE level).

Advanced and Design

Professional design practice.

Research

Frontier topics for researchers and postgraduates.

Videos

Short

Concrete cube test

Cubes cured and crushed to read compressive strength. IS 516.

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Short

Concrete slump test

A cone, a rod and a ruler: a quick read on workability. IS 1199.

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Short

Rebound hammer: six hits, one number

A non-destructive surface hardness check, and its limits.

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Short

Cube versus cylinder strength

Why the shape of a test specimen changes the number.

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35 percent: fly ash limit in PPC

Fly ash in Portland pozzolana cement and why there is an upper limit.

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5 to 10 percent: silica fume dose

A very fine additive that tightens concrete.

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Short

Needle vibrator: vertical in, slow out

How to compact fresh concrete without trapping air. IS 456 Cl 13.3 in our words.

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Short

Bulking of sand

Damp sand takes up more room, so mixes measured by volume need a correction.

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Short

Why some stone drinks water

Water absorption of aggregate and its effect on a mix.

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Short

Aggregate crushing value test

Stone is loaded to 400 kN in a steel mould; the fines produced tell you how tough it is. IS 2386 Part 4.

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Aggregate impact value test

A falling hammer instead of a slow press, for stone that will take sudden loads.

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Flakiness index test

A slotted gauge picks out thin, flat pieces that weaken a mix. IS 2386 Part 1.

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Silt content: the 75 micron wash

Washing sand over a fine sieve shows how much dust and silt it carries.

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Codes and standards

CountryDesignationScope (our words)Status
IndiaIS 10262Guidelines for proportioning concrete mixes.current
IndiaIS 1199Methods of sampling and analysis of fresh concrete, including slump.current
IndiaIS 1489 (Parts 1 and 2)Portland pozzolana cement (fly ash and calcined clay based).current
IndiaIS 2386 (Parts 1 to 8)Methods of test for aggregates for concrete: shape, strength, soundness and more.current
IndiaIS 269Ordinary Portland cement: requirements.current
IndiaIS 383Coarse and fine aggregate for concrete: requirements.current
IndiaIS 455Portland slag cement.current
IndiaIS 456Plain and reinforced concrete: general rules for materials, durability, design and construction.current
IndiaIS 516Methods of testing concrete for strength (cubes and related tests).current
IndiaIS 9103Concrete admixtures: specification.current
USAACI 211.1Standard practice for selecting proportions for normal, heavyweight and mass concrete.current
USAACI 318Building code requirements for structural concrete.current
USAASTM C143Slump of hydraulic-cement concrete.current
USAASTM C150Portland cement specification.current
USAASTM C39Compressive strength of cylindrical concrete specimens.current
USAASTM C494Chemical admixtures for concrete.current
UKBS 8500UK complementary standard to BS EN 206 for specifying concrete.current
EuropeEN 12350 (series)Testing fresh concrete, including slump.current
EuropeEN 12390 (series)Testing hardened concrete, including compressive strength.current
EuropeEN 197-1Cement: composition and conformity of common cements.current
EuropeEN 206Concrete: specification, performance, production and conformity.current
EuropeEN 934-2Admixtures for concrete: definitions and requirements.current
JapanJIS A 1101Method of test for slump of concrete.current
JapanJIS A 1108Method of test for compressive strength of concrete.current
JapanJIS R 5210Portland cement.current
JapanJIS R 5211Portland blast-furnace slag cement.current
JapanJSCE Standard Specifications for Concrete StructuresJapan Society of Civil Engineers specifications for design, construction and maintenance.current
AustraliaAS 1012 (series)Methods of testing concrete.current
AustraliaAS 3972General purpose and blended cements.current
CanadaCSA A23.1/A23.2Concrete materials and methods of construction; test methods.current
CanadaCSA A3000Cementitious materials compendium.current

Listed in a fixed country order; no standard is ranked above another. Scopes are our summaries. Buy the standards from the issuing body for exact text.

References and further reading

Standard texts, listed in no order of merit. We do not copy text, figures, tables or solved problems from any book; our explanations and examples are original.

Free and official sources

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