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Title:

FIELD STUDIES TO DETERMINE THE VALUE OF CALCIUM CHLORIDE FOR CAMPACTION OF SOILS

Accession Number:

00232456

Record Type:

Component

Abstract:

FIELD INVESTIGATIONS ARE UNDERWAY IN VIRGINIA AND ALABAMA TO STUDY CONSTRUCTION METHODS, DURABILITY, AND PERFORMANCE, AS WELL AS DENSITY, MOISTURE, COMPACTIVE EFFORTS AND STRENGTH OF SAND-CLAY BASE MATERIALS STABILIZED WITH CALCIUM CHLORIDE. TEST SECTIONS WERE CONSTRUCTED WITH A 10-INCH STABILIZED SAND-CLAY BASE AND A TWO COAT ASPHALT WEARING SURFACE. EXPERIMENTAL SECTIONS OF THE BASE MATERIAL WERE BROUGHT UP TO APPROXIMATE GRADE AND PROFILE. THE DESIGNATED AMOUNT OF CALCIUM CHLORIDE WAS THEN SPREAD UNIFORMLY OVER THE TWO TREATED SECTIONS. IT WAS THOROUGHLY MIXED WITH THE TOP 5 INCHES, COMPACTED DEPTH, BY MEANS OF A SCARIFIER AND A SEAMAN PULVIMIXER. COMPACTION FOLLOWED MIXING. EIGHTEEN DAYS AFTER CONSTRUCTION THE ASPHALT WEARING SURFACE WAS PLACED. DURING THESE 18 DAYS THE ROAD WAS OPEN TO TRAFFIC. MAINTENANCE DURING THIS PERIOD CONSISTED OF A LIGHT BLADING AND THE ADDITION OF WATER TO THE UNTREATED SECTION FOR LAYING DUST. DENSITY MEASUREMENTS WERE MADE AT 1, 5, 7 AND 15 DAYS, FOLLOWING CONSTRUCTION AND ARE NOW BEING MADE EVERY 30 DAYS. OTHER MEASUREMENTS MADE BEFORE SURFACE TREATMENT INCLUDED PH-VALUES OF THE BASE MATERIALS, CALCIUM CHLORIDE CONTENTS OF ROADWAY SAMPLES, SURFACE ROUGHNESS AND STRENGTH MEASUREMENTS. FOR DETERMINING STRENGTHS, THE BURGGRAF SHEAR APPARATUS WAS ADOPTED.

Supplemental Notes:

Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

Monograph Accession #:

01410443

Language:

English

Authors:

Theuer, A U

Pagination:

pp 19-20

Publication Date:

1948

Serial:

Highway Research Board Bulletin

Issue Number: 14
Publisher: Highway Research Board

Conference:

27th Annual Conference of the Highway Research Board

Location: Washington District of Columbia, United States
Date: 1947-1 to 1947-1

Media Type:

Print

Old TRIS Terms:

Subject Areas:

Construction; Geotechnology; Highways; Maintenance and Preservation

Files:

TRIS, TRB, ATRI

Created Date:

Aug 15 2004 2:43AM

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