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Construction Practice Notes No. 003

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Construct io n Pract ice Notes No. 003 

Method for Determination of CompressionStrength of Concrete Cube

Date issued: October 29, 2003

Contributor : Sew Yuh Ling

All feedbacks, comments and information please call telephone no.: 603-8886 8888

The notes have been prepared on the 704 apartment site office laboratory facilities with the assistance of 

Misman bin Nawawi.

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Construction Practice Notes No. 003:

Method for Determination of Compression Strength of Concrete Cube

This construction practice notes are prepared in accordance to MS 26 : Part 2 : 1991

Section 3. Method for Determination of Compression Strength of Concrete Cube

Steps :

1. Testing Machine

Compression testing machine for concrete shallcomply to BS 1610 : Part 1 and clauses 2.4 to 2.9

of Section 2 MS 26 : Part 2 : 1991.

2. Balance (Weighing apparatus)

Balance for weighing specimen to an accuracy of 0.1% of the mass.

Calibration service sticker

Calibration service sticker

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5. Concrete Cube Dimensions

Measure the cube width x length x height

and confirm the dimensions are within1% of the nominal dimensions. If alldimensions are within 1%, calculate the

volume of the cube from the nominaldimensions (in m

3).

Ideally use a pair of callipers to measure

the dimension across each pair of 

opposite faces.

6. Placing the cube in the testing machine

Carefully center the cube on the lower platen.

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7. Loading

Setting the recording needle (red colour) to zero.

Without shock, apply and increase the load continuously at a nominal rate within

the range 0.2N/(mm2.s) to 0.4N/(mm

2.s) until no greater load can be sustained.

8. Type of Failure

Satisfactory failures (Abstracted from MS 26 : Part 2 : 1991 Fig 3.1)

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8. Type of Failure (cont’d)

Some unsatisfactory failures (Abstracted from MS 26 : Part 2 : 1991 Fig 3.2)

9. Test Report

Recording and calculation

of test results.

Express the results tothe nearest 0.5N/mm2.

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