Axial Compressive and Bond Behavior of Reinforced Non-Calcium Concrete

碩士 === 國立臺灣科技大學 === 營建工程系 === 106 === The rapid development of construction industry has induced the increase of Ordinary Portland Cement (OPC) concrete production which leads to the increase of CO2 emissions. Many researchers have been developing a more environmental-friendly materials that can sub...

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Bibliographic Details
Main Author: Deser Christian Wijaya
Other Authors: Chien-Kuo Chiu
Format: Others
Language:en_US
Published: 2018
Online Access:http://ndltd.ncl.edu.tw/handle/xgktfj
Description
Summary:碩士 === 國立臺灣科技大學 === 營建工程系 === 106 === The rapid development of construction industry has induced the increase of Ordinary Portland Cement (OPC) concrete production which leads to the increase of CO2 emissions. Many researchers have been developing a more environmental-friendly materials that can substitute or eventually replace the OPC concrete. Ruentex Engineering Company has developed the Non-Calcium Concrete which is the topic of this research. The objective is to have a zero-cement concrete so that it is environmental-friendly. Various experiments were conducted to observe the mechanical properties of the Non-calcium concrete. Axial compression test was also conducted to develop the stress-strain model for the non-calcium concrete. The variables in the axial compression test were concrete type (conventional and non-calcium concrete) and the types of transverse reinforcement (conventional tie, continuous tie and five-spiral transverse reinforcement). A pullout test was conducted to develop a development length equation for the non-calcium concrete, with the concrete type (conventional and non-calcium) as the only variable. The comparison of the test results were presented in this thesis. The specified concrete compressive strength in this thesis was 48 MPa and the specified yield strength of steel was 420 MPa and 490 MPa. The axial compressive test results indicated that the non-calcium concrete can achieve the similar axial strength with conventional concrete, but with a lower toughness and ductility. Effect of transverse reinforcement types were further presented in this thesis. The drawbacks of non-calcium concrete can also be observed in the failure mode of pullout non-calcium concrete specimens. Proposed stress-strain models for the axial compressive test columns were proposed and verified. For the pullout test, a development length equation was proposed for the non-calcium concrete.