Chemical Ceramics Corporation

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PROPERTY SCIENCES Project: Unilock – Aurora, Illinois                              Job No: 22955
Client: Unilock Chicago                                             Report No: 22955
Unit ID: 2 x 4 inch cylinder of unknown composition Report date: 11/07/02
  Received Date: 11/05/02

LABORATORY TEST REPORT
Specimen ID H-8
Date Cast 9/25/02
Date Received 11/05/02
Date Tested 11/06/02
Age, Days 42
Diameter, inches 1.99
Load, lbs 57,654
Compressive Strength, psi 18,540

This Test was performed in general accordance with ASTM C 39

Giles Engineering Associates, Inc.

GEOTECHNICAL, ENVIRONMENTAL AND CONSTRUCTION MATERIALS CONSULTANT

N8 W22350 JOHNS0N ROAD. SUITE A1/WAUKESHA.WI 53186(414) 544-0118//FAX (414) 549-5888

4601 VOGES ROAD/MADISON, WI 54124/(608)838-9706/FAXL 608)638-3194

REPORT OF COMPRESSION TEST

CLIENT: World Industries PROJECT: Chinacrete Cylinders

313 N. Watertown St. Lab testing

Johnson Creek, WI 53038

Date: February 03, 1999 GEA Project no: 1M 9711012

DATE DELIVERED TO LAB: 11/9/98 By: Client

CYLINDER(S) MADE BY: Client GROUP SAMPLE NO.: 11/9/98

DATE	CYL	CYL	TEST	TEST	TOTAL		CYLINDER		COMPRESSIVE
CAST	DES.	NO.	DATE	AGE	LOAD		AREA		STRENGTH
				(DAYS)	lbf	kN	sq in	sq cm	psi	Mpa
11/3/98	#2	1	11/10/98	7	32,080	143	7.07	45.6	4,538	31.3
11/3/98	#3	2	11/17/98	14	49,570	220	7.07	45.6	7,013	48.4
11/3/98	#4	3	11/24/98	21	61,190	272	7.07	45.6	8,557	59.7
11/3/98	#5	4	12/1/98	28	66,680	297	7.07	4S.6	9,433	55.0
11/3/98	#6	5	12/1/98	29	64,412	296	7.07	4S.6	9,101	62.7
11/3/9888	#7	6	2/3/99	90	119,170	530	7.07	45.6	15,859	115.2

REMARKS: (1) Cylinders tested in accordance with ASTM C 39-96

(2) Type of capping: neoprene pads (ASTM D 1231). unless noted otherwise

(3) Type of fracture: shear unless noted otherwise

(4) All Cylinders were capped with Sulphur Mortar

Reviewing Engineer: Charles S. Gresser, P.E.