Quality Plan

QUALITY ASSURANCE MANUAL

FOR

TESTING MATERIALS AND FRESH CONCRETE

RED SEA READY MIXED CONCRETE COMPANY

CONCRETE BATCH PLANT IN HURGHADA CITY

1. General

The purpose of this plan is to establish a procedural guide for sampling and testing deemed necessary to maintain compliance with the specification requirements. CEL will perform the required quality control tests in the field or laboratory on aggregates, concrete, moisture-density relation and in-place field density tests on fill and backfill materials.

2. PERSONNEL

CEL will assign qualified engineer (s) and, well-trained technician(s) having previous significant experience of such type of works. As a minimum CEL will assign one engineer and one technician for the anticipated level of work. The level of works and related activities will allocate the required number of personnel.

3. EQUIPMENT

The provided equipment and testing facilities will conform to requirements of ASTM standards for both concrete and earth works. CEL will maintain this equipment in a proper condition during the project. Calibration of this equipment will be carried out in accordance to their relevant standard, list of equipment is attached.

4. QUALITY ASSURANCE

All tests that will be performed both on site and in laboratory will conform to ASTM, ACI and, project specification requirements. A copy of relevant ASTM and ACI specification will be available in site laboratory. CEL laboratories are now in the training phase to obtain ISO 9001:2000.

5. SAMPLING

5.1 SAMPLING OF AGGREGATES

The sampling procedures of aggregates will be in accordance to ASTM D 75. The minimum size of sample will be in accordance to table (1) of ASTM D 75.

5.2 SAMPLING OF CEMENT

The sampling procedures of cement will be in accordance to

ASTM C 183.

5.3 SAMPLING OF FRESH CONCRETE

The sampling procedures of fresh concrete will be in accordance to ASTM C 172 and C 94. The fresh concrete samples will be obtained at the point of discharge from the truck mixer/agitators.

6-TESTING AND FREQUINCIES

CEL shall perform tests required to verify that control measures are adequate to provide work, which conforms to the project specification. These tests are summarized as follows;

7-AGGREGATES

Initial testing of aggregates will be made to conform the compliance of the source or quarry to ASTM C 33 and/or project specification requirements.

The field testing of aggregates will be in accordance to ASTM specifications and the frequency of testing will be as per the project specification requirements and / or as required by ACI 221R "Guide for Use of Normal Weight and Heavyweight Aggregates in Concrete" as shown below:

7.1 COARSE AGGREGATES (EACH SIZE GROUP)

Test	Test method	Test frequency	On – site
- Grading (sieve analysis) - Moisture content - % passing sieve No. 200	ASTM C 136 ASTM C 566 ASTM C 117	Once per day
- Specific gravity & absorption -Unit weight and voids in aggregates - Clay lumps and friable particles	ASTM C 127 ASTM C 29 ASTM C 142	Once per week
- Chemical analysis (Chloride- Sulfate) - Resistance to abrasion using los angles machine	ES ASTM C 131	Once per month	Off – ste

The acceptance criteria will be as mentioned in ASTM C33.

7.2 FINE AGGREGATE

Test	Test method	Test frequency	On – site
- Grading (sieve analysis) - Moisture content - % passing sieve No. 200	ASTM C136 ASTM C566 ASTM C117	Once per day
- Specific gravity & absorption -Unit weight and voids in aggregates - Clay lumps and friable particles	ASTM C 127 ASTM C 29 ASTM C 142	Once per week
- Chemical analysis (Chloride- Sulfate) - Specific gravity & absorption - Organic impurities	ES ASTM C128 ASTM C 40	Once per month	Off – site

The acceptance criteria will be as mentioned in ASTM C33.

8 – CONCRETE MIXING WATER AND ICE

Test

method

Test

frequency

Off – site

- Chemical analysis

(Chloride – Sulfate- T.D.S – pH)

- Compressive strength

-setting time

ES spec.

ASTM C 94

One sample per month

9 - ADDITIVES

Initial testing of additives will be made to conform the compliance of the source to ASTM C 494 or mill certificate the site testing as the follows:

Test

Test method

Test

frequency

On – site

- Density

- pH

ASTM C 494

One test for each delivered

1-Choride content

2- Solid content

ASTM C 494

One / month

Offsite

10 – CEMENT

Initial testing of cement will be made to conform the compliance of the source to ASTM C 150 and/or project specification requirements for both chemical and physical properties. The cement deliveries will be tested for physical properties each 100-Ton as mentioned in ASTM C 183 or as required by the project specifications.

Test

method

Test

frequency

Off– site

Physical analysis

1.time of setting by vicat apparatus

2. Fineness (by Blain ) apparatus

3. Compressive strength

ASTM C 191

ASTM C 204

ASTM C 109

Every 100 ton delivered

Chemical analysis

4. Chemical analysis C3A

ASTM C 114

One sample per month

The acceptance criteria will be as mentioned in ASTM C150.

11- CONCRETE

The testing plan, frequency and acceptance criteria for both fresh and hardened concrete will be as per project specification.

Test	Test method	Test frequency	On – site
Slump	ASTM C 143	- Every 40 m³ - When visual inspection indicates non-conformance - With each set of test cubes
Concrete temperature	ASTM C 1064	- Every 40 m³ - Not less than once per day - With each set of test cubes
Unit weight	ASTM C 138	-At least one test per day (if required )
Compressive strength	ASTM C 31 ASTM C 39	- One set every 100 m³ - Not less than once per day - One set consists of 6 cubes Three cubes will be tested after 7 days, Three cubes will be tested after 28 days
Chloride content in hardened concrete	ASTM C 1152	One sample /1000 m³ concrete mix.	off – site

- Frequency of tests shall be applied for each class of concrete

- Statistical analysis for 28 days compressive strength results will be submitted Monthly

12 - LABORATORY EQUIPMENTS

Initial calibration will be made to conform the compliance of the specification In the start of the work and then made calibration of compression machine according ASTM C 39 every one year.

13 - BATCH PLANT :

Inspection plan of batch plant will be in accordance to project specification in addition to the requirement of ASTM C 94 and QC manual section 3 (plant certification check list) of national ready mixed concrete association. Calibration will be done every 6 months.

The results will be submitted to owner by the third day following completion of the test. Results of field density tests will be submitted to the owner immediately upon completion of the test. The reports will contain all the required information as defined by project specification.

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