Use of Clayish Crushed Stone for Production of Aerated Concrete


Article Preview

Aerated concrete is a new type of building materials. Clayish crushed stones are regarded as solid waste disposals in China. This paper reports the research outcomes of an experimental study on using clayish crushed stone for the production of aerated concretes of B05 and B06 grade. Hydro-thermal synthesis reaction, mixing proportions, gas-forming and their influences on the concrete performance are investigated. Proper mixing proportions and some important technical parameters are proposed for material design. The microstructure of aerated concrete made with clayish crush stone is analyzed by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results indicate that the hydration products of clayish aerated concrete are composed of poor crystallized C-S-H (B), blade- and needle-shaped Tobermorite and a small amount of granular Hydrogarnet. A homogeneous and densified microstructure was obtained in the aerated concretes with negligible amount of clay after the hydro-thermal reaction in the mixture.



Key Engineering Materials (Volumes 302-303)

Edited by:

Nai-Qian Feng and Gai-Fei Peng






Y. Z. Chen et al., "Use of Clayish Crushed Stone for Production of Aerated Concrete", Key Engineering Materials, Vols. 302-303, pp. 269-274, 2006

Online since:

January 2006




[1] Hauser A, Eggenberger U: Fly Ash from Cellulose Industry as Secondary Raw Material in Autoclaved Aerated Concrete, Cement and Concrete Research, 1999, 29(3), pp.297-302.

DOI: 10.1016/s0008-8846(98)00207-5

[2] Bererka J, Taylor A: Use Granite Dust for Making Aerated Concrete and Ceramics, Key Engineering Materials, 1991, 53(3), pp.512-517.

DOI: 10.4028/

[3] Goual M. S, De Barquin F, etc: Estimation of the Capillary transport Coefficient of Clayish Aerated Concrete Using a Gravimetric Technique, Cement and Concrete Research, 2000, 30 (10) pp.1559-1563.

DOI: 10.1016/s0008-8846(00)00379-3

[4] Way S. J, Shayan A: Study of Some Synthetically Prepared Hydrous Alkali Calcium Silicates, Cement and Concrete Research, 1992, 22(5)915-926.

DOI: 10.1016/0008-8846(92)90115-c

[5] Narayanan N, Ramamurthy K: Structure and Properties of Aerated Concrete: A Review, Cement and Concrete Composites, 2000, 22(5), pp.321-329.

DOI: 10.1016/s0958-9465(00)00016-0

[6] Ramamurthy K, Narayanan N: Factors Influencing the Density and Compressive Strength of Aerated Concrete, Magazine of Concrete Research, 2000, 52(3), pp.163-168.

DOI: 10.1680/macr.2000.52.3.163

[7] Goual M. S, Bali A, Queneudec M.: Effective Thermal Conductivity of Clay Aerated Concrete in the Dry State: Experimented Results and Modeling, Journal of Physics D: Applied Physics, 1999, 32(23), pp.3041-3046.

DOI: 10.1088/0022-3727/32/23/310

[8] Hulya K, Thomas C: Micro-structural Investigations of Naturally and Artificially Weathered Autoclaved Aerated Concrete, Cement and Concrete Research, 2003, 33 (9), pp.1423-1432.

DOI: 10.1016/s0008-8846(03)00084-x

In order to see related information, you need to Login.