Physico-Mechanical Properties of Bio-Based Bricks
- 1 National Advanced School of Publics Works, University of Yaounde1, BP 510 Yaoundé, Cameroon
- 2 Department of Mechanical Petroleum and Gas Engineering, National Advanced School of Mines and Petroleum Industries of the University of Maroua, PO BOX 08 Kaélé, Cameroon
- 3 Higher Technical Teacher Training College of the University of Douala, BP 1872 Douala, Cameroon
- 4 Department of Mechanical Petroleum and Gas Engineering, National Advanced School of Mines and Petroleum Industries of the University of Maroua, PO BOX 08 Kaélé, Cameroon
- 5 Laboratory of Civil Engineering and Mechanical, National Advanced School of Engineering, University of Yaoundé 1, BP 8390, Yaoundé, Cameroon
- 6 Higher Technical Teacher Training College of the University of Douala, BP 1872 Douala, Cameroon
- 7 Laboratory of Materials, Architecture and Civil Engineering, National Advanced School of Engineering, University of Maroua, BP 46, Maroua, Cameroon
- 8 Laboratory of Materials, Architecture and Civil Engineering, National Advanced School of Engineering, University of Maroua, BP 46, Maroua, Cameroon
Abstract
The aim of this work is to improve the high performance of mud bricks. The latter w as reinforced with rice straws as stabiliser leading to an improvement of the physico-mechanical properties. Thus, the physical characteristics of the clay such as natural water content, density, atterberg limit, plasticity limit (Wp) and plasticity index (Ip) were determined. Their values are respectively 8.39%, 2025.73 Kg/m 3 , 47.66%, 29.75% and 17.91%. The clay used is a low plastic organic silt. The normal proctocol provided an optimum dry density ( ɣ OP) of 1.28 Kg/m 3 at an optimum moisture content of 12.42%. The actual density of the straw is 464 Kg/m 3 , its absorption rate reached 206% in 5 min s and stabilised at 385% at 480 min s of immersion. The maximum bending and compression strengths are respectively 1.52 and 0.164 MPa. The mud brick absorption coefficients obtained are between 4.875 at 0% straw and 20.573% at 3% straw.
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