Influence from ingredients Influence from ingredients W/C W/C Quantity of paste Quantity of paste Sp Sp Aggregates Aggregates Admixture Admixture Influence.

Slides:



Advertisements
Similar presentations
Portland Cement and Concrete
Advertisements

Chemical Admixture Mineral Admixture
Properties of Fresh Concrete
Ch8: Proportioning Concrete Mixes
Concrete Condensed1 Cement Production, Composition & Types.
GREEN CONCRETE. What is Green Concrete? A concrete that uses less energy in its production & produces less carbon dioxide than normal concrete is green.
Introduction Dr Magnus Currie From Scotland, UK MEng Civil Engineering
Learning Objectives Relevance of fresh concrete properties
Proportioning of Concrete Mixtures
Strength of Concrete.
VOLUMETRIC MIXED CONCRETE MOBILE VOLUMETRIC MIXERS.
Mix Design Review.
Severud Associates Consulting Engineers PC Museum of the American Indian Washington, D.C. Yale University Ingalls Hockey Rink New Haven, CT Eventi Hotel.
Topic : MIX DESIGN OF CONCRETE Properties of concrete Submitted To: DR. AYUB ELAHI Submitted By: SOHAIB NASEER 2K9-scet-29/CIVIL M.ZAEEM FAKHAR 2K9-scet-03/CIVIL.
Concrete Dry Quantities examples in class Week 3.
TED 316 – Structural Design
Concrete Materials & Methods ARCH 330 Fall Concrete and Cement Concrete is a rocklike material produced by mixing coarse and fine aggregates, Portland.
Admixtures.
Concrete Unit 24 Carpentry and Building Construction.
12. Kolloquium und Workshop über „Rheologische Messungen an mineralischen Baustoffen“ 12. und 13.März 2003 in Regensburg Testing compatibility of cement.
Chemical Admixture Mineral Admixture
Chapter 5 Construction Mortar.
4.7.2 High-strength Concrete (HSC) Introduction –Definition –Classifications Choice of HSC raw material –Binding material –Excellent aggregate –Superplasticizer.
4.7.5 Non-dispersion Concrete in Water (NDC) Introduction Composites of NDC Properties of NDC.
4.7.4 Pumped Concrete Introduction Requirements of Raw Material Mix ratio Design of Pumped Concrete.
Chapter 5 Construction Mortar. Chapter 5 § 5.1 Introduction Definition Applications Classifications.
§4.4.6 Influencing factors Strength grade of cement W/C
JUST IN TIME MIXTURE PROPORTIONING Ken W. Day Consultant, Australia.
Strength grade of cement W/C Strength formula of the concrete Factors of aggregate Curing condition Testing condition §4.4.6 Influencing factors.
Chapter 3 Cement Technical Properties of Portland Cement Fineness Setting Time Soundness of the Portland Cement Strength Other properties.
Influence from ingredients Influence from ingredients W/C W/C Quantity of paste Quantity of paste Sp Sp Aggregates Aggregates Admixture Admixture Influence.
Design of Concrete Structure I Dr. Ali Tayeh First Semester 2009 Dr. Ali Tayeh First Semester 2009.
–Mineral Admixture –Ordinary Portland Cement (P.O) –Portland granulated Blast-furnance-slag Cement (P.S) –Portland-Pozzlana Cement (P.P) –Portland fly-ash.
Chapter 3 Cement Technical Properties of Portland Cement Fineness Setting Time Soundness of the Portland Cement Strength Other properties.
Eng. Malek Abuwarda Lecture 12 P1P1 Construction Methods Lecture 12 Production of Aggregate and Concrete.
Introduction to Concrete and Masonry Ag III and IV.
§4.3.3 Evaluation of Workability
Chapter 5 Construction Mortar.
Influence from ingredients Influence from ingredients W/C W/C Quantity of paste Quantity of paste Sp Sp Aggregates Aggregates Admixture Admixture Influence.
Introduction  Civil Engineering Materials -Concrete, Steel, Pavement  Construction Materials Timber, Glass, Aluminum, Paint, Plastic, Masonry, Ceramic.
Chapter 4 Ordinary Concrete. §4.2 Ingredient of Ordinary Concrete Cement4.2.1 Cement Aggregate Water Concrete Admixture.
Composition of cement paste, concrete admixtures and mix design of superplasticized concrete Exercise 4.
4.3.2 Workability of Fresh Concrete Definition Workability Importance of Workability MobilityViscidity Water retention.
PREPARED BY: MARCIA C. BELCHER CONSTRUCTION ENGINEERING TECHNOLOGY Concrete: Fundamentals.
 Mix Proportion  Tasks  Basic Requirements  Principle  Steps and Methods  Design of Preliminary Mix  Ascertaining the basic mix proportion  Laboratory.
JUST IN TIME MIXTURE PROPORTIONING Ken W. Day Consultant, ConAd Australia.
 Classification  Features in Influencing Concrete  Fine Aggregate-Sand  Coarse Aggregate-Gravel Aggregate.
Influence from ingredients Influence from ingredients W/C W/C Quantity of paste Quantity of paste Sp Sp Aggregates Aggregates Admixture Admixture Influence.
Durability of Concrete §4.5 Durability of Concrete Definition Importance of Durability Anti-permeability Freezing Resistance Carbonation /Neutralization.
Chapter 5 Construction Mortar. Chapter 5 §5. 3 Technical Properties Mobility (consistency) Water retentivity Strength Durability.
Moles and Particles How many moles are in 4.65 x water molecules? Starting quantity? Particles Ending quantity? Moles Conversion factor: 1 mole.
–Mineral Admixture –Ordinary Portland Cement (P.O) –Portland granulated Blast-furnance-slag Cement (P.S) –Portland-Pozzlana Cement (P.P) –Portland fly-ash.
Hot Weather Concreting
Necessary Information Required compressive strength at 28days: 30 Mpa Type of structure: mass concrete, beam, column. Maximum size of aggregate: 20 mm.
WHAT IS CONCRETE/WHAT MAKES IT STRONG?. Are Concrete & Cement the Same Thing?
Atmosphere By Leah Hodge.
Water in the Atmosphere Weather and Climate Day 3.
Concrete Mix Design ACI Variation 5% Variation for Adjusting Mixes n Determine what is to be added or reduced n If it is sand, stone, or cement compute.
Rajan singh rawat INTRODUCTION Admixtures are ingredients other than basic ingredients cement, water and aggregates that are added to.
GURU NANAK DEV ENGINEERING COLLEGE, LUDHIANA Submitted to RESPECTED.C.S. SINGLA SIR (GNDEC) Submitted by Submitted by: Salman Khan Univ. Roll No
 Experimental Part.  Data Collection and Analysis.  Conclusions and Recommendations.
CONCRETE MIX DESIGN.
What is CONCRETE SLUMP TEST –
Department of Civil Engineering
Department of Civil Engineering
Fresh concrete Fresh concrete is concrete in the state from time of mixing to end of time concrete surface finished in its final location (in the structure).
Admixtures.
Super plasticizers These are linear polymers containing sulfonic acid groups. Two major commercial formulations 1- sulfonate melamine- formaldehyde condensate;
Influence of properties of coarse aggregate
Maximum Size of Aggregate
Presentation transcript:

Influence from ingredients Influence from ingredients W/C W/C Quantity of paste Quantity of paste Sp Sp Aggregates Aggregates Admixture Admixture Influence from environment Time Time Temperature Temperature Test condition Test condition Main influencing factors of Workability

Mobility decreases accordingly HydrationVaporization Waterabsorbed Water absorbed by aggregates Influence from Time By hydration and vaporization, water is absorbed by aggregates and mobility decreases accordingly.

The relationship between slump and time is shown in fig Slump decreases while time increases. Slump test should be proceeded in 15 minutes after preparation of the composite in construction. Slump Time Time Influence from Time Fig Relationship between Slump and Time

Mobility decreases with temperature rising –Temperature must be noticed to get required workability – More mixed water in summer should be used than that in winter Temperature Influence from Temperature Slump Temperature Fig Relationship between Slump and Temperature

 Test condition also has effects on the mobility of the concrete composite  Device condition-parameter  Concrete condition-humidity, smoothness Influence fromTest Condition Influence from Test Condition

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2024 SlidePlayer.com Inc. All rights reserved.