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Potential alkali-reactivity of Torre Lago (Italy) sand; Sulla potenziale reattivita` agli alcali della sabbia di Torre del Lago

Technical Report:

Abstract

The potential alkali-reactivity of Torre Lago sand was evaluated by test methods directly based-on the aggregate (petrographic examination, infrared spectroscopy, X-ray diffraction analysis, chemical test ASTM C 289), or by mortar bar expansion tests (ASTM C 227, lN NaOH bath at 80 degrees C, saturated NaCl bath at 50 degrees C). Except for the ASTM C 227 method, all the test methods indicate that Torre Lago sand is a potentially deleterious aggregate from the view point of alkali-aggregate reaction. A critical examination of the results suggests that this sand is not deleterious when standard mortar bars are stored in water, as prescribed by Italian Standards for the evaluation of the mechanical strengths of cements. Conversely, this sand could be deleterious when the cementitious mixes are to be exposed to particular environmental conditions, such as in the presence of de-icing salts.
Publication Date:
Dec 31, 1991
Product Type:
Technical Report
Report Number:
ETDE-IT-92-97
Reference Number:
SCA: 420500; 420200; 052002; PA: ITAN-92:001465; SN: 93000910622
Resource Relation:
Other Information: PBD: 1991
Subject:
42 ENGINEERING; 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; CEMENTS; WEAR RESISTANCE; SAND; X-RAY DIFFRACTION; PETROGRAPHY; SALTS; HYDROXIDES; CHEMICAL REACTION KINETICS; ITALY; STANDARDS; MATERIALS TESTING; 420500; 420200; 052002; FACILITIES, EQUIPMENT, AND TECHNIQUES; WASTE DISPOSAL AND STORAGE
OSTI ID:
10107182
Research Organizations:
Ente Nazionale per l`Energia Elettrica, Milan (Italy). Centro di Ricerca Idraulica e Strutturale; Rome Univ. (Italy)
Country of Origin:
Italy
Language:
Italian
Other Identifying Numbers:
Other: ON: DE93748438; TRN: 92:001465
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
ITAN
Size:
36 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Berra, M, Mangialardi, T, Paolini, A E, and Pellorca, F. Potential alkali-reactivity of Torre Lago (Italy) sand; Sulla potenziale reattivita` agli alcali della sabbia di Torre del Lago. Italy: N. p., 1991. Web.
Berra, M, Mangialardi, T, Paolini, A E, & Pellorca, F. Potential alkali-reactivity of Torre Lago (Italy) sand; Sulla potenziale reattivita` agli alcali della sabbia di Torre del Lago. Italy.
Berra, M, Mangialardi, T, Paolini, A E, and Pellorca, F. 1991. "Potential alkali-reactivity of Torre Lago (Italy) sand; Sulla potenziale reattivita` agli alcali della sabbia di Torre del Lago." Italy.
@misc{etde_10107182,
title = {Potential alkali-reactivity of Torre Lago (Italy) sand; Sulla potenziale reattivita` agli alcali della sabbia di Torre del Lago}
author = {Berra, M, Mangialardi, T, Paolini, A E, and Pellorca, F}
abstractNote = {The potential alkali-reactivity of Torre Lago sand was evaluated by test methods directly based-on the aggregate (petrographic examination, infrared spectroscopy, X-ray diffraction analysis, chemical test ASTM C 289), or by mortar bar expansion tests (ASTM C 227, lN NaOH bath at 80 degrees C, saturated NaCl bath at 50 degrees C). Except for the ASTM C 227 method, all the test methods indicate that Torre Lago sand is a potentially deleterious aggregate from the view point of alkali-aggregate reaction. A critical examination of the results suggests that this sand is not deleterious when standard mortar bars are stored in water, as prescribed by Italian Standards for the evaluation of the mechanical strengths of cements. Conversely, this sand could be deleterious when the cementitious mixes are to be exposed to particular environmental conditions, such as in the presence of de-icing salts.}
place = {Italy}
year = {1991}
month = {Dec}
}