*3.1.3. Result of the bamboo tensile strength test*

**2.4. Data analysis**

72 Bamboo - Current and Future Prospects

through questionnaire.

**3. Result and discussion**

beam with bamboo reinforcement.

obtained was 2.04 MPa.

*3.1.1. The brick masonry compressive strength*

*3.1.2. The concrete block wall compressive strength*

**Figure 6.** Collapse of concrete block wall sample after being tested [3].

**3.1. Characteristic of the construction material**

The data analyzed to determine whether the simple houses were livable or not are as follows:

**1.** The building physical data: the dimension and the material strength were analyzed to know whether the houses were resistant to the earthquake and wind or not. The finite ele‐

**2.** The level of thermal and physical feasibility: it was measured using the environment meter

**3.** The extent to which the dweller feels satisfied and subjective comfortable was measured

For, the construction of simple house with either brick or concrete block and the bamboo rein‐ forced concrete structure characteristics of the materials are need be determined. To this end, the characteristics of the materials used were tested in the laboratory. The material tests are as follows: compressive strength of brick masonry, compressive strength of concrete block wall, compressive strength of concrete, tensile strength of bamboo, and flexural test on concrete

**Figure 1** shows the four samples of brick masonry used in the test: the length averaged 470 mm, width averaged 112 mm, and the height averaged 377 mm. The average compressive strength

The mortar space of concrete block wall was made of Portland cement and sand with the ratio 1 to 4. The compressive strength averaged 4.96 Mpa, which, according to SNI 03‐0348‐1989, can be classified as having the quality of B40. **Figure 6** [3] shows a failure/collapse model of

ment method assisted with the SAP‐2000 program.

(reliable testing & measuring equipment—KRISBOW‐kw06‐291).

The bamboo tensile strength was obtained at the laboratory of the Mechanical Engineering Department of Udayana University, as shown in **Figure 7** [22] and **Table 1** [22].

It can be seen from **Table 1** that the average yield strength was 129.17 MPa and the average elongation was 8.99%. The results were used to analyze the nominal flexural strength or the nominal moment of the bamboo reinforced concrete. Viewed from the tensile strength, it can be stated that bamboo can be used as an alternative concrete reinforcement, especially the light and moderate structure.

#### *3.1.4. The result of compressive strength of concrete cylinder*

Three concrete cylinders were tested in order to identity the concrete strength. The diameter of each cylinder was 150 mm and the height was 300 mm. The results were that the compressive

**Figure 7.** The bamboo was tested until it was Fracture [21].


**Table 1.** The result of the bamboo tensile strength test.

strength of cylinder 1 was 21.07 MPa, cylinder 2 was 20.35 MPa, and cylinder 3 was 21.94 MPa, meaning that the average compressive strength was 21.12 MPa.
