IS 455 (1989): Portland Slag Cement - Specification

30 October 1989. after the draft finalized by tbe Cement and Concrete Sectional Committee had been approved by 1he Civil Engineering Division Council. Portland slag cement is obtained by mixing Portland cement clinker, gyplum and Ifanulated sla,in suitable proportions and grinding the mixture to get I thorough and intimate mix between the ...

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Introduction to Concrete - Portland Cement Association

The term concrete refers to a mixture of aggregates, usually sand, and either gravel or crushed stone, held together by a binder of cementitious paste. The paste is typically made up of portland cement and water and may also contain supplementary cementing materials (SCMs), such as fly ash or slag cement, and chemical admixtures (Figure 1-1).

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Concrete is a construction material composed of cement, fine aggregates (sand) and coarse aggregates mixed with water which hardens with time. Portland cement is the commonly used type of cement for production of concrete. Concrete technology deals with study of properties of concrete and its practical applications. In a building construction, concrete is used for the construction of ...

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Size Proportions by volume* metre of concrete of stone Cement Sand Stone Cement ** Sand Stone mm bags3 m3 m 19,01 2 2 or 8,70,7 0,7 26,5 1 bag 75 l 75 l 1 2 1,5 13,2 10 0,80,6 1 bag 75 l 55 l * Loose, uncompacted state except for cement in bags ** Complying with SANS 50197-1 (see 6.1)


PROPERTIES Size:- 39cm X 19 cm X 30 cm 39cm X 19 cm X 20 cm 39cm X 19 cm X 10 cm Density: Solid concrete blocks :- 1500 to 2000kg/m3 Hollow concrete blocks:- 1000 to 1500kg/m3 Compressive Strength: Solid concrete blocks :- >5 N/mm2 Hollow concrete blocks:- >2 to 4 N/mm2 Water Absorption:- <10 to 15% by weight


cement amounts can be reduced because concrete strength is directly related to the water/cement ratio. Definition of Mineral Admixtures Mineral admixtures include fly ash, hydrated lime, silica fume and ground blast furnace slag. Many of these materials have cement-like properties, augmenting the strength and density of the finished concrete.

Principles of Concrete Mix Design - best quality cement price

Cement Cement is a fine powder, which when mixed with water and allowed to set and harden can join different components or members together to give a mechanically strong structure. Although the percentage of cement in concrete is around 15%, the role of cement is very important in the strength and durability of concrete.

Portland-Limestone Cements: History, Performance, and ...

Verifying Portland Limestone Cement Durability Holcim ASTM C595 (Type IL) or ASTM C1157 cements are tested for durability performance. Tests generally include: Fresh & Hardened concrete properties - Requirements are met through concrete mix design – ASTM Sulfate Resistance - ASTM C1012 Alkali-Silica Reactivity - ASTM C1260/1567

Eco-efficient cements: Potential economically viable ...

Cape Town, South Africa Yunus BALLIM Professor, Department of Civil Engineering, University of the Witwatersrand, Johannesburg, South Africa Bruce BLAIR Former VP Product Performance and Innovation, Lafarge, USA Cristiana CIARALDI CSI, WBCSD, Geneva, Switzerland Anjan K. CHATTERJEE Consultant, Indian Cement & Concrete Industry Kolkata, India

How to Design Concrete Structures using Eurocode 2

concrete elements. The cement and concrete industry recognised that a substantial effort was required to ensure that the UK design profession would be able to use Eurocode 2 quickly, effectively, effi ciently and with confi dence. With support from government, consultants and relevant industry bodies, the Concrete Industry Eurocode 2 Group (CIEG)

Concrete Construction eBook (PDF) -

This comprehensive concrete PDF eBook has both the tried-and-tested methods and materials, and more recent innovations. It covers everything you need to know about concrete along with Styro forming systems, fiber reinforcing adjuncts, and some architectural innovations, like architectural elements, that can help you offer more in the jobs you bid on. Every chapter provides detailed ...

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CONCRETE BLOCK PAVING Book 1 – Introduction A walk-over in cost, looks and durability for Concrete Block Paving Concrete Block Paving Book 1: Introduction Published by the Concrete Manufacturers Association Block D Lone Creek Waterfall Office Park Bekker Road Midrand South Africa P.O. Box 168 Halfway House 1685 Telephone: +27 11 805 6742 Fax +27 86 524 9216 e-mail: …

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While all chapters have been updated, five completely new chapters have been included: repair, reinforcement, formwork, sand-cement mixes and self-compacting concrete. This is a highly technical book. Hardcover book (A4) 439p, with tables, figures, subject index and fully searchable CD-ROM. Buy now . Fundamentals of concrete – 3rd Edition 2013


Watson Concrete (Pty) Ltd ( 011) 740 0910 White River Cement Bricks ( 013) 750 1271 MASONRY PRODUCER MEMBERS (MAY 2005) Portland Park, Old Pretoria Road, Halfway House 1685, South Africa. PO Box 168 Halfway House 1685 Tel +27 11 805 6742, Fax +27 11 315 4683 e-mail: [email protected] website:


water and the cement (w:c) in a mix determines the strength of the concrete – the more cement in the mix (for the same water content), the stronger the hardened concrete will be, and vice versa. Throughout this booklet we use "cement" to cover all branded cements, bearing the SABS mark, that comply with