| Author | Chai Jaturapitakkul |
| Call Number | AIT Thesis no.ST-87-11 |
| Subject(s) | Composite materials--Testing
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The purpose of this study is to investigate the mechanical
properties of straw-clay composite which is used to construct
grain silo . Rice straw has been use d t o reinforce clay slurry or
adobe. Basically the straw serves as reinforced fiber and clay as
matrix . Before deter mining the mechanical and physical properties
o f straw- clay composite , the properties of straw and clay are
Separately deter mined. Straw-clay bundles had been tested in
direct tension, axial compress ion, flexure, directs hear,
bearing, fire test, weight loss due to immersion in water,
thermal conductivity and density. Six composite wall panels
having thicknesses of 15, 2 0 , and 25 cm. were formed by using
straw-clay bundles placing into two different laying patterns
namely " straight laying pattern" and " combination of straight and
diagonal laying pattern " . Settlement and water loss of the wall
panels as well as the surrounding temperature and relative
humidity were recorded for a period of 20 days before they were
subjected to load bearing tests.
Test results showed that the optimum water content of clay
slurry was found to be 55 % a nd the straw content ranges between
1 2- 1 5 % by weight. Th e settlement due to its own weight of the
straw-clay composite wall panel was found to be 5 % of its
height. This occurred over a period of 16 days after
construction, and is mainly due to its own weight and water loss
of the straw-clay composite wall panel. The bearing strength of
the combination of straight and diagonal laying pattern is higher
than that of straight laying pattern. The failure pattern of
straight laying pattern under loading is due to the separation
between the interface of each straw- clay bundle, this affect can
be reduced by using combination o f straight and diagonal laying
pattern. Straw-clay composite is a good insulating material
comparing with other conventional construction material for grain
storage silos. However, it is not waterproof. |
| Year | 1987 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Pichai Nimityongskul |
| Examination Committee(s) | Pama, Ricardo P. ;Ping Kunawatsatit |
| Scholarship Donor(s) | The KEIDANREN (Federation of Economic Organization), Japan. |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1987 |