Cement Composition - The Concrete Portal

Portland-Slag Cement (PSC) – IS 455-1976 Compared to OPC, the low heat cement has higher proportion of C 2 S, while the rapid hardening cement has higher C 3 S and fineness. BIS classifies OPC into three different strength grades, which are primarily achieved by differences in C 3 S contents and fineness.

Slag Cement Benefits and Use in Concrete - Slag Cement News

Slag cement is commonly found in ready-mixed concrete, precast concrete, masonry, soil cement and high temperature resistant building products. While there are many applications and benefits of slag cement, a few are highlighted below and detailed information sheets are located here.

CIVL 1101 - Part 3 Properties of Portland Cement

Supersulfated Cements - Slag cement activated with calcium sulfate; lower heat of hydration and better sulfate resistance than Portland blast-furnace cements. Used in Europe. Expansive Cements . Portland cement concrete experiences high shrinkage during drying which can cause tensile cracking if restrained.

KR20100002710A - Slag cement composition - Google Patents

The slag cement composition contains one or two kinds selected from aluminum sulfate, calcium hydroxide(Ca(OH)2), waste concrete fine powder and sulphate of soda as an activator. The mixture ratio of blast furnace slag and Portland cement is 1:10-10:1.

Three-dimensional computer modeling of slag cement

A newly developed version of a three-dimensional computer model for simulating the hydration and microstructure development of slag cement pastes is presented in this study. It is based on a 3-D computer model for Portland cement hydration (CEMHYD3D) which was originally developed at NIST, taken over in the authors' group and further developed.

Utilisation of copper slag for cement manufacture

Above: The chemical composition of granulated copper slag. The National Council for Cement and Building Materials (NCB) has done pioneering work in the area of utilisation of industrial by-products for cement manufacture. The joint study aims to utilise the copper slag as raw mix component in the manufacture of Ordinary Portland Cement (OPC

Chemical characteristics of iron and steel slag : NIPPON

The primary components of iron and steel slag are limestone (CaO) and silica (SiO 2).Other components of blast furnace slag include alumina (Alsub>2 O 3) and magnesium oxide (MgO), as well as a small amount of sulfur (S), while steelmaking slag contains iron oxide (FeO) and magnesium oxide (MgO).In the case of steelmaking slag, the slag contains metal elements (such as iron) in oxide form

PDF The reaction of slag in cement: theory and computer modelling

factors are addressed in this section, including the chemical composition of slag, the pore solution composition and temperature. Figure 1. Factors on the reactivity of slag in cement (modified from Olbrich et al. /18/). Reactivity of slag in cement Chemical composition SiO2 TiO2 Al2O3 CaO MgO Na2O K2O Pore solution w/c Sulphate Alkali binding

MSDS: Slag Material Safety Data Sheet

contains slag or cement. Slag and cement can buildup or adhere to the walls of a confined space. The slag or cement can release, collapse or fall unexpectedly. Properly ground all pneumatic conveyance systems. The potential exists for static build-up and static discharge when moving powders through a plastic, non-

A review: The comparison between alkali-activated slag (Si

Portland cement concrete. 2.1.2. Glass phase and reactivity. Slag is generated in the blast furnace and subsequently quenched, and its composition is 

How Cement Is Made

Cement is manufactured through a closely controlled chemical combination of calcium, silicon, aluminum, iron and other ingredients. Common materials used to manufacture cement include limestone, shells, and chalk or marl combined with shale, clay, slate, blast furnace slag, silica sand, and iron ore.

US4761183A - Grouting composition comprising slag - Google

A grouting composition, a method of grouting and a formation so grouted are disclosed. The composition comprises a very small particle size slag, an equal or greater weight of water and the optional components cement, alkali silicate, anionic dispersant, a source of orthophosphate ions, sodium hydroxide and sodium carbonate. The grout is particularly adapted to the treatment of "tight" or low

Microstructure and Composition of Hardened Paste ... - Frontiers

2019年8月28日 — Microstructure and Composition of Hardened Paste of Soda Residue-Slag-Cement Binding Material System. Rongjie Song1,2, Qingxin Zhao1 

Eco-concrete with incorporation of blast furnace slag as

Chemical and mineralogical compositions of the cement. Chemical composition, Mineralogical composition. Substances, Percentage, Minerals, Percentage. CaO 

Effects of slag content, fineness and additive to cement pastes

establishing the optimum mix compositions of blast furnace slag-Portland cement suitable for the production of slag cement at various fineness. An important