Showing posts with label concrete. Show all posts
Showing posts with label concrete. Show all posts

UNDERWATER CONCRETE - MIX DESIGN AND CONSTRUCTION PRACTICES

The underwater concrete technology has historically evolved largely through a trial-and-error process of constructing marine works. Many outstanding examples exist of high quality concrete placed underwater. However, failures also occurred and led to excessive cost and/or schedule overruns. These failures were largely due to improper concrete mix design or improper placement. The problems may have occurred because proper underwater concrete construction techniques and experience have not been widely disseminated. This section focuses on technical issues of underwater concrete mix design, concrete production and placement, and quality control.



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Underwater Concrete Technologies in Marine Construction Projects

Concrete Production from a Floating Batch Plant
Performance Requirements for Underwater Concrete in Structural Applications
Washout Test and Slump Test


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Reinforced Concrete by Ultimate Strength Design

Reinforced Concrete

LRFD vs. ASD
Failure Modes
Flexure Equations
Analysis of Rectangular Beams
Design of Rectangular Beams
Analysis of Non-rectangular Beams
Design of Non-rectangular Beams



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Concrete structures fondations, columns, Slabs and Beams

Lesson in type of fondations, columns, Slabs and Beams.



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Checklist Concrete works Inspections in Excel

Site Inspections  checklist - Concrete works in spredsheet excel.
Minimum Frequency or Check For Permanent Work and Required Documentation: DIR/Test Record/Inspection Checklist.



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concrete estimate formula excel spreadsheet

Example of concrete estimate for :
- EXCAVATION
- BACK FILLING
- ORDINARY CONCRETE/BLINDING
-FOOTING CONCRETE
-CONCRETE FLOOR/BRC
- NECK COLUMNS/ COLUMNS UPTO TIE BEAM LEVEL
- TIE BEAMS
- Concrete Work of Ground Floor and Above
- ACTS OF BLOCK WORK
- FINISHING WORK
- EXTERIOR FINISHINGS




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Concrete structural calculation spreadsheet excel

Simply enter the width, length, and thickness to calculate concrete for structures.

Simply enter the width, length, and thickness to calculate concrete for structures.

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concrete checklist spreadsheet doc

CONCRETE PRE-PLACEMENT INSPECTION
CONCRETE INSPECTION DURING PLACEMENT
POST-PLACEMENT INSPECTION




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concrete quantities calculator per m3

Calculate Quantities of Materials for Concrete with excel.
This file is editable for your new projec.
 Y'll find : Dimension of reinfocement concrete, Dimension of  blinding concrete and more...
 download for free and enjoy.




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Excel for Design of RC Column for Axial load

Worksheet for designinf of Reinforced concrete columnfor Axial load.

This document is in excel editable.




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Course Book - Design of Reinforced Concrete Structures

Course syllabus

The following topics are included:

  • Introduction
  • Torsion in beams
  • Two way slabs, Introduction, types, .. etc
  • Direct design method
  • Equivalent frame method
  • Yield line theory of slabs
  • Multi-story buildings, applied loads, Methods, Software application
  • Shear walls
  • Reinforced Concrete Water tanks
  • Reinforce Concrete Bridges
  • Prestress Concrete; Introduction, advantages and disadvantages, losses, check of stresses, design of prestressed girders.




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pdf concrete mix design manual

Concrete is obtained by mixing cement, fine aggregate, coarse aggregate, water and admixtures in required proportions. The mixture when placed in forms and allowed to cure becomes hard like stone. The hardening is caused by chemical action between water and the cement due to which concrete grows stronger with age.
It is the most widely-used man-made construction material in the world.



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Concrete Mix Design - ppt presentation

Mix Design for compressive strength by I.S. Method, Road Note Method, British method, Mix Design for flexural Strength.
Concrete mix design may be defines as the art of selecting suitable ingredients of concrete and determining their relative proportions with the object of producing concrete of certain minimum strength & durability as economically as possible.



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Types aggregates in concrete - pp course

aggregates are Inert materials mixed with a binding material (cement, lime, mud) for preparation of mortar or concrete. Depending on the particle size, aggregates are classified as Fine aggregates. 0.15 mm to 4.75 mm. sand, crushed stone, ash, cinder, surkhi. Coarse aggregates. 4.75 mm to 7.5 cm. Cyclopean aggregates. 7.5 cm to 15 cm.



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aggregates pdf
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aggregates ppt

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cement training course in powerpoint

cement course online with theses elements :


  1. Historical Development, 
  2. Manufacture of Cement, 
  3. Chemical Composition of Cement, 
  4. Raw Material for Cement, 
  5. Typical composition of Clinker, 
  6. Compounds in Clinker, 
  7. Cement Manufacturing,  
  8. Cement Manufacturing Process, 
  9. Hydration of Cement, 
  10. Hydration of cement compounds, 
  11. Setting of cement, 
  12. Cement Types, 
  13. Cement Properties



Historical Development,  Manufacture of Cement,  Chemical Composition of Cement,  Raw Material for Cement,  Typical composition of Clinker,  Compounds in Clinker,  Cement Manufacturing,   Cement Manufacturing Process,  Hydration of Cement,  Hydration of cement compounds,  Setting of cement,  Cement Types,  Cement Properties

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Properties of fresh and hardened concrete - ppt

Properties of Fresh (Workability)
Hardened Concrete (Workability,Permiablitiy,Durablility)
Thermal properties
Micro-cracking of concrete
Mix Design
Rheology
Causes of Damage of Concrete



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Concrete structure pdf

3.1 Constituents: Cement, aggregates, water and admixtures

3.1.1 Purpose and function of constituents
3.1.1 History and manufacture cement - Development of cement-based products
3.1.1.1 Components, types and properties
3.1.1.1.1 Component materials required for cement making
3.1.1.1.2 Manufacturing process
3.1.1.1.3 Constituents of cement
3.1.1.1.4 Types of cement (CSA)
3.1.2 Setting, hydration and hardening of cement/concrete
3.1.3 Properties of aggregates, water and admixtures
3.1.3.1 Properties of aggregates
3.1.3.2 Properties of water
3.1.3.3 Admixtures: Need and type
3.1.3.3.1 Chemical admixtures
3.1.3.3.2 Mineral admixtures

3.2 Making and testing of concrete

3.2.1 Mixing, placing, finishing and curing of concrete
3.2.2 Properties of fresh concrete: Consistency and workability
3.2.3 Properties of hardened concrete
3.2.3.1 Strength: Compressive, tensile and flexure
3.2.3.2 Modulus of elasticity
3.2.3.3 Durability of concrete
3.2.3.4 Creep and shrinkage

3.3. Concrete Mix Design: Objectives

3.3.1 Principles of mix design
3.3.2 CSA Mix design - Based on absolute volume method

3.4 Concept of reinforcing concrete with steel - Properties and characteristics
3.5. Types of concrete: Mass concrete, reinforced concrete, pre-stressed concrete

- Casting of slabs in grade
- Casting of a concrete wall
- Casting of a floor and roof framing system


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How to placing and Finishing Concrete

Basic Requirements for Placing Concrete, Preparation Before Placing, Depositing Concrete, Bleeding and Segregation, Placement with Conveyor Belt, Horizontal Construction Joint, Underwater Placement Methods, Consolidation/ compaction of concrete, Internal Vibrators, Placing Concrete in a
Sloping Lift, External Vibration, Nuclear Gauges to Determine Subbase Compaction...



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Mix Concrete, with Batching, Transporting, and Handling

Stages in concrete making 

  • Batching
  • Mixing
  • Transporting
  • Placing
  • Compacting
  • Finishing
  • Curing.
Mixers Types, Maintenance of Mixers, Stationary Mixing, Mixing Time, Mixing time- affect on Strength, Ready Mixed Concrete, Ready Mix Plant...

Stages in concrete making   Batching Mixing Transporting Placing Compacting Finishing Curing.

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concrete training courses : workability of concrete

Requirement of Fresh Concrete, Factors affecting Workability, Measurement of Workability, Slump Test, Compacting Factor Test, Vee Bee Test, Kelly Ball Test, Comparison of Slump and Flow Table Tests, Comparison Vee Bee and Compacting Factor Tests with Slump Test, Affects of temperature, Affect of time on Workability,  Setting time of Concrete, Affect of cement type on workability.


Requirement of Fresh Concrete, Factors affecting Workability, Measurement of Workability, Slump Test, Compacting Factor Test, Vee Bee Test, Kelly Ball Test, Comparison of Slump and Flow Table Tests, Comparison Vee Bee and Compacting Factor Tests with Slump Test, Affects of temperature, Affect of time on Workability,  Setting time of Concrete, Affect of cement type on workability.

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