NYC-WTC_000188034

NYC 9/11 Public Portal Document

CTL/ ;□ TESTING LABORATORIES, INC. _______________________________ f II

DATE: May 9,2002 LAB#: 12737

CLIENT: Civetta Cousins JV 1100 East 156* Street Bronx, NY 10474

PROJECT: World Trade Center, New York, NY Cast in place wall G40 to G44

STRENGTH RE-QUIRED: 5000 psi plus 25% @ 28 days (regular)

SUBJECT: Analysis of Aggregate and Concrete Mix Design

FOR: Prequalified Trial Mix Design in accordance with NYC Code 27-605 '

SUPPLIER: Empire Concrete The following materials were submitted by Empire Concrete as typical of those proposed to be furnished for this project.

Cement: Norval 236-59-SM Type I ASTMC 150 Fine Aggregate: ■Long Island Natural ASTM C 33 Coarse Aggregate; New York Traprock ASTM C 33 Admixture #1: WR Grace Daravair, Cal #679-53-SM ASTMC 260 Admixture #2: WRDA Hycol ASTM C 494

COARSE AGGREGATE Gradation Test Sieve Size Percent Passing ASTM C 33 # 67 1” 100.0 100 3/4” 92.4 90-100 63.7 3/8” 25.9 20-55 #4 4.8 0-10 #8 2.1 0-5 Urtit Weight, Dry Rodded 99.8 pounds Specific Gravity.............. .2.80

2623 Roberts Avenue ® Bronx, New York 10461 ® (718] 824-1816 » Fax (718] 732-0982

CITY_21MC100_004921876

NYC-WTC_000188034