Stress-Strain Relationship of Ca(OH)2-Activated Hwangtoh Concrete
This study examined the stress-strain behavior of 10 calcium hydroxide (Ca(OH)2)-activated Hwangtoh concrete mixes. The volumetric ratio of the coarse aggregate (Vagg) and the water-to-binder (W/B) ratio were selected as the main test variables. Two W/B ratios (25% and 40%) were used and the value o...
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/846805 |
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| author | Keun-Hyeok Yang Ju-Hyun Mun Hey-Zoo Hwang |
| author_facet | Keun-Hyeok Yang Ju-Hyun Mun Hey-Zoo Hwang |
| author_sort | Keun-Hyeok Yang |
| collection | DOAJ |
| description | This study examined the stress-strain behavior of 10 calcium hydroxide (Ca(OH)2)-activated Hwangtoh concrete mixes. The volumetric ratio of the coarse aggregate (Vagg) and the water-to-binder (W/B) ratio were selected as the main test variables. Two W/B ratios (25% and 40%) were used and the value of Vagg varied between 0% and 40.0%, and 0% and 46.5% for W/B ratios of 25% and 40%, respectively. The test results demonstrated that the slope of the ascending branch of the stress-strain curve of Ca(OH)2-activated Hwangtoh concrete was smaller, and it displayed a steeper drop in stress in the descending branch, compared with those of ordinary Portland cement (OPC) concrete with the same compressive strength. This trend was more pronounced with the increase in the W/B ratio and decrease in Vagg. Based on the experimental observations, a simple and rational stress-strain model was established mathematically. Furthermore, the modulus of elasticity and strain at peak stress of the Ca(OH)2-activated Hwangtoh concrete were formulated as a function of its compressive strength and Vagg. The proposed stress-strain model predicted the actual behavior accurately, whereas the previous models formulated using OPC concrete data were limited in their applicability to Ca(OH)2-activated Hwangtoh concrete. |
| format | Article |
| id | doaj-art-dbd3ad97158744d897de395f02104473 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-dbd3ad97158744d897de395f021044732025-02-03T01:22:07ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/846805846805Stress-Strain Relationship of Ca(OH)2-Activated Hwangtoh ConcreteKeun-Hyeok Yang0Ju-Hyun Mun1Hey-Zoo Hwang2Department of Plant, Architectural Engineering, Kyonggi University, Suwon, Kyonggi-do 443-760, Republic of KoreaDepartment of Architectural Engineering, Graduate School, Kyonggi University, Suwon, Kyonggi-do 443-760, Republic of KoreaDepartment of Architecture, Mokpo National University, Jeonnam 534-729, Republic of KoreaThis study examined the stress-strain behavior of 10 calcium hydroxide (Ca(OH)2)-activated Hwangtoh concrete mixes. The volumetric ratio of the coarse aggregate (Vagg) and the water-to-binder (W/B) ratio were selected as the main test variables. Two W/B ratios (25% and 40%) were used and the value of Vagg varied between 0% and 40.0%, and 0% and 46.5% for W/B ratios of 25% and 40%, respectively. The test results demonstrated that the slope of the ascending branch of the stress-strain curve of Ca(OH)2-activated Hwangtoh concrete was smaller, and it displayed a steeper drop in stress in the descending branch, compared with those of ordinary Portland cement (OPC) concrete with the same compressive strength. This trend was more pronounced with the increase in the W/B ratio and decrease in Vagg. Based on the experimental observations, a simple and rational stress-strain model was established mathematically. Furthermore, the modulus of elasticity and strain at peak stress of the Ca(OH)2-activated Hwangtoh concrete were formulated as a function of its compressive strength and Vagg. The proposed stress-strain model predicted the actual behavior accurately, whereas the previous models formulated using OPC concrete data were limited in their applicability to Ca(OH)2-activated Hwangtoh concrete.http://dx.doi.org/10.1155/2014/846805 |
| spellingShingle | Keun-Hyeok Yang Ju-Hyun Mun Hey-Zoo Hwang Stress-Strain Relationship of Ca(OH)2-Activated Hwangtoh Concrete The Scientific World Journal |
| title | Stress-Strain Relationship of Ca(OH)2-Activated Hwangtoh Concrete |
| title_full | Stress-Strain Relationship of Ca(OH)2-Activated Hwangtoh Concrete |
| title_fullStr | Stress-Strain Relationship of Ca(OH)2-Activated Hwangtoh Concrete |
| title_full_unstemmed | Stress-Strain Relationship of Ca(OH)2-Activated Hwangtoh Concrete |
| title_short | Stress-Strain Relationship of Ca(OH)2-Activated Hwangtoh Concrete |
| title_sort | stress strain relationship of ca oh 2 activated hwangtoh concrete |
| url | http://dx.doi.org/10.1155/2014/846805 |
| work_keys_str_mv | AT keunhyeokyang stressstrainrelationshipofcaoh2activatedhwangtohconcrete AT juhyunmun stressstrainrelationshipofcaoh2activatedhwangtohconcrete AT heyzoohwang stressstrainrelationshipofcaoh2activatedhwangtohconcrete |