Neapolitan Yellow Tuff as raw material for lightweight aggregates in lightweight structural concrete production

被引:64
作者
de Gennaro, R
Cappelletti, P
Cerri, G
de'Gennaro, M
Dondi, M
Langella, A
机构
[1] Soc Italiana Zeoliti, I-41040 Pigneto, Italy
[2] Univ Naples Federico II, Dipartimento Sci Terra, I-80134 Naples, Italy
[3] Univ Sassari, Ist Sci Geol Mineral, I-07100 Sassari, Italy
[4] CNR, ISTEC, Ist Sci & Tecnol Mat Ceram, I-48018 Faenza, Italy
[5] Univ Sannio, Dipartimento Studi Geol Ambientali, I-82100 Benevento, Italy
关键词
Neapolitan Yellow Tuff; zeotite; lightweight expanded aggregate; lightweight structural concrete;
D O I
10.1016/j.clay.2004.01.014
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The possibility of using Italian zeolitized volcanoclastites for the production of lightweight aggregates in the building industry has been tested. The present paper definitely demonstrates the good attitude of the Neapolitan Yellow Tuff (NYT) for the production of lightweight expanded aggregates (LEA) with bulk densities ranging between 0.9 and 1.1 g/cm(3). LEAs showing these features, usually manufactured with clays, are mainly used in the production of lightweight structural concretes (LSC). The physical characterization of LEAs was carried out by means of: grain size analysis, loose weight. mean density of the single grain, water absorption after 30 min and 24 It, and strength of particles (UNI-7549). Afterwards, LEAs were mixed with sand. cement and water to prepare cubic concrete blocks following the UNI specifications (UNI-7549-12). On these specimens, the unit weight and uniaxial compressive strength after 28 days were determined. The investigated parameters measured both on LEAs and concretes, are comparable with those measured on materials commonly traded in Italy. The obtained results foresee interesting potential applications of a raw material characterized by a low exploitation cost and a widespread availability on the Italian territory. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:309 / 319
页数:11
相关论文
共 24 条
[1]  
BENBOW J, 1987, IND MINERALS SEP, P61
[2]  
BUSH AL, 1974, 25 ANN M PERL 1 COL
[3]  
Chipera SJ., 1995, Powder Diffract, V10, P47, DOI [10.1017/S0885715600014305, DOI 10.1017/S0885715600014305]
[4]  
COLELLA C, 1995, NATURAL ZEOLITES 93, P377
[5]  
de Gennaro M., 1995, Natural Zeolites'93, P51
[6]  
De Gennaro M., 1982, PERIOD MINERAL, V51, P287
[7]   Genesis of zeolites in the Neapolitan Yellow Tuff: geological, volcanological and mineralogical evidence [J].
de'Gennaro, M ;
Cappelletti, P ;
Langella, A ;
Perrotta, A ;
Scarpati, C .
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, 2000, 139 (01) :17-35
[8]   Zeolitic tuffs as raw materials for lightweight aggregates [J].
de' Gennaro, R ;
Cappelletti, P ;
Cerri, G ;
de' Gennaro, M ;
Dondi, M ;
Langella, A .
APPLIED CLAY SCIENCE, 2004, 25 (1-2) :71-81
[9]   Italian zeolitized rocks of technological interest [J].
deGennaro, M ;
Langella, A .
MINERALIUM DEPOSITA, 1996, 31 (06) :452-472
[10]  
DEGENNARO R, 2001, P EUROMAT 2001 AIM M