Flys Ash Project interim report

AfriSam (South Africa) (Pty) Ltd Reg No: 2006/005910/07 PO Box 15 Roodepoort 1725 South Africa Tel: +27 (11) 758 6000 Fax: +27 (11) 672 6480 www.afrisam.com

Centre of Product excellence: Materials Test Report

A SANAS Accredited Testing Laboratory, No T0377

Customer: Think Tricks Co. Address: 31Mulbarton Road, Beverly AH. Lonehill 2191, Sandton Technical Consultant: Bheki Makhathini 21/08/2015 Job No 0932/15: – Trial mixes

1.

Brief

The CPE: Materials Laboratory was requested to carry out tests indicated below on sample submitted by Think Tricks Co.

2.

Samples

The following material was received by the CPE: Materials Laboratory on 06/08/2015. Materials Fly Ash

Job No. / Sample No.

Tests required

Job 0932-15-1

Trial mix

Registered Office: Physical: AfriSam House, Corner 14th Avenue and Hendrik Potgieter Road, Weltevredenpark, 1709 Postal: PO Box 6367, Weltevredenpark 1715 Directors: FP Nhleko (Chairman) JHN Strydom (Deputy Chairman) SP Olivier* (CEO) L Serfontein* (CFO) F Jakoet J Molobela M Muller (Alternate) ET Nesane TG Wagner RJ Wessels * Executive

3.

Test results

3.1

Laboratory Trial Mix Design and results The following mix design was used to make cubes for compressive strength testing: Date Cast: 13/08/2015 Control mix

70/30

(13/08/2015)

MC: Fly Ash mix

3

200

200

kg/m

3

210

210

90

Materials

Source

Units

Water

Municipal

kg/m

Milled Clinker

Roodepoort

Fly Ash

Lethabo

kg/m

3

Fly Ash

Think Tricks Co.

kg/m

3

-

90

997

997

1050

1050

0.67

0.67

Crusher Sand

Eikenhof

kg/m

3

22.4 mm Stone

Eikenhof

kg/m

3

w:c ratio Actual slump

mm

90

80

Average 1 day Strength

MPa

10.3

8.1

Average 7 day Strength

MPa

20.8

21.4

Average 28 day Strength

MPa

Average 56 day Strength

MPa

Notes 1. No allowance has been made in the above table for wastage. 2. Moisture content should be checked on site. The net water is variable and depends on the moisture content of the aggregates. 3. Mix designs and compressive strength supplied are indicative of the potential performance of the materials tested, and should be verified on site before full scale production commences. Any variation from the above should be referred back to AfriSam Centre of Product Excellence for evaluation and confirmation. 4. Further laboratory trials may be required to confirm any changes in the initial mix designs as given in this report. Thereafter further site evaluation should be conducted to confirm any amendments that may have been made to the mix designs and would then be superseded by a further report.

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5.

Test methods used SANS 5862-1:2006

Slump test

SANS 5863:2006

Compressive Strength of hardened concrete

Mike McDonald Manager Centre of Product Excellence

This test report may not be reproduced except in full without the written permission of Manager Centre of Product Excellence The results given in this report refer only to the samples submitted for testing.

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