WATERPROOFING OF REINFORCED CONCRETE FLAT ROOF

CONCRETE FLAT ROOF 12.1 BACKGROUND Most roofs in Singapore are constructed using reinforced concrete which is known to have pores or capillary tracts. Depending on the designed strength, density and installation techniques, the number of pores can vary. These pores are interconnected within the concrete and water will penetrate through such

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BATCHING AND MIXING

September 1, 2003 CONCRETE MANUAL 5-694.431 (1) In order to determine whether or not the concrete meets specification requirements for cement content, water-cement ratio, etc. the Inspector must know the exact amount of materials used in mixing the concrete.

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Aggregates for Concrete - Memphis

more of the several standard tests cited in the following sections and tables. However, the fact that aggregates satisfy ASTM C 33 or AASHTO M 6/M 80 requirements does not necessarily assure defect-free concrete. For adequate consolidation of concrete, the desirable amount of air, water, cement, and fine aggregate (that is,

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A STUDY ON USE OF RICE HUSK ASH IN CONCRETE

10. Universal Testing Machine testing a test specimen 74 11. Flexural test specimens after testing 74 12. Compressive Strength v/s Age of Control 76 13. Comparative bar chart for control concrete 77 14. Strength of control concrete at different ages 80 15. Compressive strength of M20 grade control concrete at different ages 80 16.

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Top 6 Important Quality Tests Of Concrete

4. Rapid Chloride Ion Penetration Test. Like water permeability test, this is also one of the tests to determine the durability of concrete. Three cubes shall be taken from fresh concrete delivered on site and tested at 28 days age. The test shall be done in accordance with ASTM C1202-97.

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Standard test on fresh concrete - SlideShare

Flow Test Conducting The flow table is wetted. The cone is placed on the flow table and filled with fresh concrete in two layers, each layer 25 times tamp with tamping rod. The cone is lifted, allowing the concrete to flow. The flow table is then lifted up several centimeters and then dropped, causing the concrete flow a little bit further ...

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Flexural Test on Concrete - Significance, Procedure and ...

It tests the ability of unreinforced concrete beam or slab to withstand failure in bending. The results of flexural test on concrete expressed as a modulus of rupture which denotes as ( MR) in MPa or psi. The flexural test on concrete can be conducted using either three point load test (ASTM C78) or center point load test (ASTM C293).

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Test of concrete - SlideShare

2. testing of cement ppt ... - The concrete slump test is an empirical test that measures the workability of fresh concrete. More specifically, it measures the consistency of the concrete in that specific batch. ... The division of scale on the rod record the slump of the concrete in millimeters, supplied complete with a sheet metal container ...

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CEMENT and CONCRETE TECHNOLOGY

Hardened Concrete: physical, chemical and engineering properties, tensile and compressive strengths, other strengths, deformation, elasticity, shrinkage, creep destructive tests and non-destructive tests (lecture 1, lecture 2). Mix design: influencing factors, various methods of mix proportioning and design of

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NPTEL :: Civil Engineering - Concrete Technology

Strength of Concrete: Factors Affecting Test Results: Download To be verified; 26: Mechanical Properties of Concrete:Elastic Moduls, Poision'Ratio,Fatigue, Impact: Download To be verified; 27: Creep of Concrete: Download To be verified; 28: Creep and Shrinkage of Concrete: Download To be verified; 29: Shrinkage of Concrete: Download To be ...

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IS 516 (1959): Method of Tests for Strength of Concrete

IS:516-1959 Indian Standard METHODS OF TESTS FOR STRENGTH OF CONCRETE o. FOREWORD 0.1 This Indian Standard was adopted by the Indian Standards Institution on 10 November 1959, after the draft finalized by the Cement and Concrete Sectional Committee had been approved by the Building Division Council. 0.2 Testing plays an important role in controlling the quality of cement ...

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Concrete Technology (CT) Notes pdf - Free Download 2020 | SW

Here you can download the free lecture Notes of Concrete Technology Pdf Notes (CT Pdf Notes) with multiple file links to download. The Concrete Technology Notes Pdf (CT Notes Pdf) book starts with the topics covering Portland cement, Mineral and chemical admixtures, Classification of aggregate, Factors affecting workability, Water / Cement ratio, Compression tests, Factors in the choice of mix ...

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PPT – Concrete Testing PowerPoint presentation | free to ...

Concrete Flooring Contractors in UAE - 5 E's of concrete flooring 1) Concrete has been used to construct some of the largest structures in the world. Today concrete is used to lay roads, build bridges and dams. It is also one of the most popular choices of flooring in houses, restaurants, commercial building and so on.

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Non destructive test on concrete - SlideShare

PULL-OUT TESTS ON CONCRETE A pull-out test measures, with a special ram, the force required to pull from the concrete a specially shaped steel rod whose enlarged end has been cast into the concrete to a depth of 3 in. (7.6 cm). The concrete is simultaneously in tension and in shear, but the force required to pull the concrete out can be related ...

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Concrete Mix Design - sginstitute.in

Step 01: Data to be collected Design a concrete mix for construction of an elevated water tank. The specified design strength of concrete is 30 MPa at 28 days measured on standard cylinders. The specific gravity of FA and C.A. are 2.65 and 2.7 respectively. The …

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How To Calculate Rebound Hammer Test Result in 11+ Pages ...

Then the compressive strength of the cube is tested on the compression testing machine. 3The rebound hammer test also known as Schmidt Hammer Test developed by Swiss engineer Ernst Schmidt in 1948 is one of the oldest simplest and most popular non-destructive tests of concrete.

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Topics in Concrete

The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete …

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PPT – Concrete Testing PowerPoint presentation | free to ...

Concrete Testing is one of the most essential procedures in identifying the high top quality of tangible. These examining come in many types at various condition of tangible. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 5f19d8-YTdkO

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IS 2185-1 (2005): Concrete masonry units, Part 1: Hollow ...

Concrete block, hollow (open or closed cavity) or solid shall be referred to by its nominal dimensions. The [IS 2185 (Part 1) :2005 term nominal means that the dimension includes the thickness of the mortar joint. Actual dimensions (length and depth only) shall be 10 mm short of the nominal

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Radiographic and Ultrasonic Testing of Welds

Radiographic Testing (RT) – This method of weld testing makes use of X-rays, produced by an X-ray tube, or gamma rays, produced by a radioactive isotope. The basic principle of radiographic inspection of welds is the same as that for medical radiography. Penetrating radiation is passed through a solid object, in this case a weld rather that ...

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PPT – Concrete Technology PowerPoint presentation | free ...

Concrete block is an amalgamation of three primary ingredients- Cement, Water, and coarse aggregate. Gravel, stone or pebbles, sand, etc are the various aggregates used in the concrete mix. This Concrete mix can be given multiple shapes such as blocks, brick, tile, etc. Concrete blocks are heavily used in raising several structures in the ground.

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Designing and Proportioning Normal Concrete Mixtures ...

curing, and testing concrete cylinder specimens. The average strength, which is greater than ˘, is called Â; it is the strength required in the mix design. Requirements for  are discussed in detail under "Proportioning" later in this chapter. Tables 9-1 and 9-2 show strength require-

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Ultrasonic Testing Procedure For Concrete Structure

Ultrasonic Testing is one of the non-destructive test method based on the transmission of the ultrasonic pulse in the component or materials like concrete, steel, etc. Ultrasonic testing is known as UT or Ultrasonic Pulse Velocity Test or UPV Test.The ultrasonic testing method is based on the use of equipment composed of transducers which produce and receive the ultrasonic wave of 0.01 to 60 MHz.

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Noun Worksheets, Lessons, & Tests | Ereading Worksheets

Noun Worksheets. Singular, Plural, and Collective Nouns Worksheet – Students will read 15 fun sentences themed around a class trip to the zoo. While doing this they will identify singular, plural, and collective nouns. Then they will practice using singular, plural, and collective nouns in different contexts.

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Department of Civil and Construction Engineering Strength ...

concrete is determined by testing the cylindrical or cubical specimens of concrete using a compression testing machine, at various ages such as: 3 days, 7 days, 14 days and 28 days. Compressive strength test is conducted during mix proportioning for assessing the quality of concrete cast at site. Objective The objective of this laboratory is to:

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(PDF) Experimental Study on Use of Fly Ash in Concrete

To study the use of fly ash in concrete, cement is replaced partially by fly ash in concrete. In this experimental work concrete mix prepared with replacement of fly ash by 0%, 25%, 50%, 75% and .

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Testing for chloride permeability of concrete

For example, one testing labora t o - ry re p o r ted a coulomb value of 3,300 for a concrete mix with 7 sacks of ce-ment, 8% silica fume, and a water-Figure 2. The rapid chloride permeability test measures the charge passed through the concrete slice when one side of the specimen is in contact with a

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QUALITY CONTROL IN CONCRETE CONSTRUCTION WORK - …

Once the concrete is laid and compacted, compression tests are made on the cubes made out of this concrete. For ordinary concrete, cubes are made out of the concrete made at work site. The hardened concrete has to be checked for trueness in dimensions, shape and sizes as per design specification.

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Failure Analysis of Paints and Coatings - Plant Maintenance

laboratory testing and analysis. Management should be notified of any specimens collected from a paint and coating failure, including the underlying substrate, are often damaged, and of little use after testing. There is a wide variety of testing methods currently available …

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RCC LECTURE - 02 (Objective) || Properties of Hardened ...

https://play.google.com/store/apps/details?id=com.rochan.hive.speedupDOWNLOAD THIS APP FROM PLAY STORE TO GET COMPLETE …

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