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BC 2 2008 High Strength Concrete

 · objective of producing a cohesive mix with minimum voids. This can be done by theoretical calculations or subjective laboratory trials. The basic strength to water/cement ratio relationships used for producing normal strength concrete are equally valid when applied to HSC except that the target water/cement ratio can be in the range 0.30-0.35

Silica Fume Ground Granulated Blast Furnace Slag as

 · furnace slag and silica fume along with fiber is made. The experimental program undertaken is as follow a. To determine the mix proportion with ground granulated blast furnace slag and silica fume with fiber to achieve the desire needs. b. To determine the optimum percentage of fiber that can be added to concrete

EFFECT OF SODIUM SILICATE TO SODIUM HYDROXIDE

 · cement mortar. The weight ratio of sand to base material was fixed at 3.0 for all mixtures. Gopolymer mortars were prepared with a fixed alkali solution to base material ratio of 0.5. Extra water demand of mortar mixtures was determined with a standard flow table by flow diameter of 110 ± 5 mm according to ASTM C230 23 The mix

PART IXPORTLAND CEMENT CONCRETE

 · Masonry Cement and Mortar Cement Portland Blast-Furnace Slag Cement Aggregates Admixtures 1001.01 1001.02 1001.03 1001.02 1003.01 1003.08 1011.02 914 . a proposed concrete mix design on the form provided by the Department It is permissible to adjust the ratio of fine to coarse aggregates of the approved mix design by no more than 5

Proportioning for Mass Concrete

 · Cement 50 Grade 120 Slag Cement and 25 Class F Fly Ash ratio of SO 3to Al2O3is 0.118 . This is far below the threshold of potential for Delayed Ettringite Formation (DEF). DEF typically occurs in mixes that reach temperatures in excess of 165 oF and have SO 3to Al2O3ratios in excess of 0.45 to 0.70 . This is the

Concrete Mix Design Calculations

 · • As the water to cement ratio increases the strength of a concrete mix decreases ncrete mix decreases. • As the surface area of the aggregate increases the more water will be needed to maintain a given slump. • Coarser Surface Texture • Particle Shape • Particle Size Distribution • As the air content increas es the strength of

Properties of Concrete Manufactured Using Steel Slag

 · The test samples of 1 1.81 3.84 concrete mix (Cement Fine Aggregate Coarse Aggregate) are produced with crushed granite as coarse aggregate and river sand as fine aggregate. Subsequent test samples are produced with fine and coarse aggregate progressively replaced by steel slag at 10 intervals by weight up to 50 .

Concrete Mix Design Manual Rev08-19NCDOT

 · divided by the other. The water to cement ratio W/C is the weight of mix water in the concrete divided by the weight of cement in the concrete. The water to cementitious ratio W/Cm is the weight of mix water in the concrete divided by the weight of the cementitious material where the cementitious material is a combination of cement and

Ground Granulated Blast Furnace Slag (GGBS)Sagar

Ground Granulated Blast Furnace Slag (GGBS) GGBS is mainly used as a partial replacement of cement in concrete. When added as an admixture to concrete it acts as a stabilising agent and improves the quality of concrete. In the production of ready-mixed concrete GGBS replaces a substantial portion of the Portland cement component generally

Designing and Proportioning Normal Concrete Mixtures

 · A properly proportioned concrete mix should possess these qualities 1. Acceptable workability of the freshly mixed concrete (portland cement blended cement fly ash slag silica fume and natural pozzolans). The water-cementitious cement ratio referred to the ratio of water to portland cement or water to blended cement.

Slag Cement in Slab Concrete MixStructural engineering

 · Slag Cement in Slab Concrete Mix. We are EOR for a large shopping center and received a mix design for the slab containing up to 50 GGBF slag. (C595 Ty IS w/ max 50 C989 G120 GGBF slag). We specified Type II cement with max 20 flyash that s just what is more commonly available as far as I can tell but due to the location of the mix plant

Concrete Mix Ratio Types Proportioning of Concrete Mix

2 days ago · It is the process of determination or selection of the relative proportion of concrete ingredients that means cement sand coarse aggregate and water to obtain concrete of desired quality.. From the strength point of view and economy the main objective to select the fine and coarse aggregate in such a ratio to get a dense mix with minimum voids using the least amount of cement.

Actual Concrete Mix Ratios For 3000 3500 4000 and 4500

These are the actual concrete mix ratios for 3000 3500 4000 and 4500 psi concrete that I use to pour concrete floors patios pool decks and more. I ll show you the actual concrete batch plant ticket with the cement sand and aggregate break downs for the yards we used.

SECTION 346 PORTLAND CEMENT CONCRETE

 · concrete has a minimum of 18 fly ash or a minimum of 50 slag. For fly ash and slag (ternary blend) ensure that there is 10 to 20 fly ash 50 to 60 slag by weight and 30 portland cement by weight for mixes containing portland cement fly ash and slag.. 4. For all other concrete

slag in concrete Topic

 · The use of slag in concrete has several benefits including reduced energy reduced greenhouse gas emissions and reduced use of raw materials. Various types of slag are produced Blast-furnace slag—The nonmetallic product consisting essentially of silicates and aluminosilicates of calcium and of other bases that is developed in a molten condition simultaneously with iron in a blast

Utilization of Water-Cooled and Air-Cooled Slag

Aggregates are generally thought of as inert filler within a concrete mix and a typical concrete mix is comprised of as much as 70–80 of them. They play an essential role in the properties of both fresh and hardened concrete. Nowadays scientists are aiming to use waste materials thereby replacing natural aggregates for economic and environmental considerations.

Design of self-compacting concrete with ground

 · Now the water to effective cementitious materials content ratio of self compacting concrete with slag is given by w s /(c s k 28 g) where w s is the water content of self compacting slag concrete which is to be determined. From Fig. 4 for conventional 90 MPa concrete the water cement ratio (w n /c n) is 0.27. This water cement

Correct Ratios for Concrete Mixes

 · Recommended ratios will enable you to mix concrete to match the function for which it is intended or the strength of the concrete required. One 50 kg sack of cement has a volume of 33 litres (0 033 cu m). A builders wheelbarrow filled level to the top has a volume of 65 litres (0.065 cu m which is almost double the volume of a sack).

JKR CONCRETE SPECIFICATIONS 2014

 · PPFAC(pfa) PSC (slag) • In the newJKR Specificationthere are now 27 types of cementsnamely1 type of CEM I 19 types of CEM II 3 types of CEM III 2 types of CEM IV and 2 types of Maximum Water-Cement ratio in Designed Mix is governed by exposure conditions categorisedby broad descriptions in its table 6. • In the new JKR Specification

Ground Granulated Blast Furnace Slag (GGBS)Sagar Cement

Ground Granulated Blast Furnace Slag (GGBS) GGBS is mainly used as a partial replacement of cement in concrete. When added as an admixture to concrete it acts as a stabilising agent and improves the quality of concrete. In the production of ready-mixed concrete GGBS replaces a substantial portion of the Portland cement component generally

Supplementary Cementing MaterialsThe Portland

Slag cement is hydraulic and can be added to cement as an SCM. Silica fume also called condensed silica fume or microsilica is a finely divided residue resulting from the production of elemental silicon or ferro-silicon alloys that is carried from the furnace by the exhaust gases. Silica fume with or without fly ash or slag

Effects of Ground Granulated Blast Furnace Slag in

 · concrete design since the early 1900s (Slag Cement Association 2002). Slag cement is a byproduct of the iron-making process and is composed primarily of silica and calcium. In fine particle form slag cement displays cementitious qualities similar to those of ordinary portland cement (OPC). Slag cement can therefore be substituted for OPC in a

Mix designs for concrete block

Cement is the final component needed to produce a high-quality CMU. Cement binds aggregate par-ticles and partially fills spaces be-tween them. 5a. Choose the cement-to-aggre-gate ratio that will achieve the nec-essary CMU properties with aggre-gates being used in the mix. Below are ranges of cement-to-aggregate ratios that can be used for

ACI mix designMemphis

 · ACI Mix Design 6. Calculation of cement content-- Once the water content and the w/c ratio is determined the amount of cement per unit volume of the concrete is found by dividing the estimated water content by the w/c ratio. weight of water weight of cement wc Mix Design Procedures However a minimum cement content is required to ensure good

Concrete 101

 · Changes in cement type slag cement grade coarse or fine aggregate admixture brand or mixture proportions can trigger a trial batch to verify that the concrete mix still meets State requirements. Concrete Mix Example Given 620 lbs. total cementitious 25 slag cement SpGr Portland Cement 3.15 Slag Cement

Alkali activated slag-fly ash concrete incorporating

 · To develop the alkali activated slag-fly ash concrete (AASFC) in this study a siliceous FA procured from UPCL Udupi India confirms to IS 3812–2003 has a Blaine s fineness of about 345 m 2 /kg and specific gravity of 2.30 for which the particles retained on 45 microns was 12 and the acidic type slag procured from Jindal Steel Works Bellary India confirming to IS 12089–1999 has a

What is GGBS Its Advantages and Disadvantages

 · What is Ground Granulated Blast Furnace Slag (GGBS) The ground granulated blast furnace slag (GGBS) is a by-product of iron manufacturing which when added to concrete improves its properties such as workability strength and durability.. This material is obtained by the heating of the iron ore limestone and coke at a temperature of about 1500 o C. The process is carried out in a blast furnace.

Effect of water to cement ratio fly ash and slag on the

Many of these researches have focused on the addition of various additives into the cementitious mix to increase the EM shielding properties. This work investigates the effect of water to cement (W/C) ratio and primary additives such as fly ash (FA) and ground-granulated blast-furnace slag (GGBFS) on the EM shielding.

EFFECTS OF MIX RATIOS ON THE CHARACTERISTICS OF

 · EFFECTS OF MIX RATIOS ON THE CHARACTERISTICS OF RECYCLED IRON AND STEEL SLAG CONCRETE BY A. A. RAHEEM1.O. A. OLOWU2 1Department of Civil Engineering Faculty of Engineering and Technology Ladoke Akintola University of Technology Ogbomoso Nigeria

What is slag cement

What is Slag Cement. Slag cement is a hydraulic cement formed when granulated blast furnace slag (GGBFS) is ground to suitable fineness and is used to replace a portion of portland cement. It is a recovered industrial by-product of an iron blast furnace. Molten slag diverted from the iron blast furnace is rapidly chilled producing glassy

Slag Cement in Slab Concrete MixStructural engineering

 · Slag Cement in Slab Concrete Mix. We are EOR for a large shopping center and received a mix design for the slab containing up to 50 GGBF slag. (C595 Ty IS w/ max 50 C989 G120 GGBF slag). We specified Type II cement with max 20 flyash that s just what is more commonly available as far as I can tell but due to the location of the mix plant

GGBSGround Granulated Blast Furnace Slag for Concrete

 · There are two major uses of Ground granulated blast furnace slag In the production of high quality-improved slag cement such as Portland Blast furnace cement (PBFC) and high slag blast furnace cement (HSBFC). In such cements GGBS content ranges typically from 30 to 70 . In the production of ready-mixed concrete or site-batched durable concrete.

Comparative carbon emission assessments of recycled and

The concrete mixes names from Table 1 adopt the format Caa-Sbb-RAccc-d-Fee (Caa is the amount of cement from the total binder in percentage Sbb represents the quantity of SCM RAccc represents the RA content d is for reference concrete strength and Fee represents the concrete strength). For example C75-S25-RA50-H-F36 corresponds to a