• 357 Downloads • Abstract Detailed study has been carried out on the load carrying capacity of cement stabilized rammed earth (CSRE) circular columns under axial compression. Tests on CSRE cylinders and columns were performed to determine the effects of concentric axial loading and slenderness ratio; and stress reduction factors were assessed. A comparative study was made between the ultimate compressive strength ( σ u) of columns determined using tangent modulus theory and experimental values. Kirgizcha lyrica kizga.

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The Australian Earth Building Handbook, 008, available at Book Depository with free delivery worldwide. The Australian Earth Building Handbook: 008 We use cookies to give you the best possible experience. Catalog:Document Contents HB 195-2002 THE AUSTRALIAN EARTH BUILDING HANDBOOK Preface Contents CHAPTER 1 INTRODUCTION 1.1 SCOPE OF HANDBOOK 1.2 HISTORY 1.3 WHY EARTH CONSTRUCTION? 1.3.1 Advantages 1.3.2 Limitations 1.4 FORMS OF CONSTRUCTION 1.4.1 Loadbearing wall construction 1.1.1 Post and beam construction 1.5 PASSIVE SOLAR DESIGN 1.6.

Furthermore, the validity of using masonry design rules for the design of CSRE columns was also assessed. The result shows that with increasing slenderness ratio the load carrying capacity of columns decreases. The ultimate compressive strength of column predicted by tangent modulus theory tend to converge with experimental values at higher slenderness ratio and the masonry codal predictions are observed to be un-conservative as compared to experimental reduction factors. Lastly, the characteristic strength determined for columns yields relatively higher safety factor and indicates that it is possible to construct a single storey load bearing houses when designed properly. E c Compaction energy in kg cm/cm 3 E t Tangent modulus at failure in MPa h Height of column in mm P Average load in kN P au Average ultimate load in kN P u Ultimate load in kN δ al Average lateral displacement in mm δ av Average vertical displacement in mm δ l Lateral displacement in mm λ Height to diameter ratio or slenderness ratio σ Average compressive strength in MPa σ cr Critical stress or buckling strength in MPa σ u Ultimate compressive strength in MPa ε Average compressive strain γ f Factor of safety for dead loads γ m Material strength variations and workmanship factors.

• 126 Downloads Abstract The physical and mechanical properties of unstabilized rammed earth with different clay contents were studied, which could provide a theoretical basis for the understanding of mechanical properties of unstabilized rammed earth and improve the construction design method and specification of RE buildings for sustainable development. The experimental results show that clay content has significant influences on the engineering properties of unstabilized rammed earth. For the fine-grained soil, the liquid limit, plastic limit and plasticity index increase gradually with the increase of the clay content. The influence of clay content on the optimum moisture content compared with the maximum dry density is more significant. The mechanical properties of unstabilized rammed earth are significantly affected by the clay content. There exist good linear relationships, which can be used for the mutual verification or calculation among the mechanical properties.