Koo Bon-Min, Kim Jang-Ho Jay, Kim Tae-Kyun, Kim Byung-Yun
Concrete Structural Engineering Laboratory, School of Civil and Environmental Engineering, Yonsei University, Seoul 120-794, Korea.
Department of Architectural Engineering, Catholic Kwandong University, Gangneung 210-701, Korea.
Materials (Basel). 2015 Sep 17;8(9):6257-6276. doi: 10.3390/ma8095306.
In this study, the amount of cement used in a concrete mix is minimized to reduce the toxic effects on users by adjusting the concrete mixture contents. The reduction of cement is achieved by using various admixtures (ground granulated blast-furnace slag, flyash, ordinary Portland cement, and activated Hwangtoh powder). To apply the mix to construction, material property tests such as compressive strength, slump, and pH are performed. Preliminary experimental results showed that the Hwangtoh concrete could be used as a healthy construction material. Also, the health issues and effects of Hwangtoh mortar are quantitatively evaluated through an animal clinical test. Mice are placed in Hwangtoh mortar and cement mortar cages to record their activity. For the test, five cages are made with Hwangtoh and ordinary Portland cement mortar floors, using Hwangtoh powder replacement ratios of 20%, 40%, 60%, and 80% of the normal cement mortar mixing ratio, and two cages are made with Hwangtoh mortar living quarters. The activity parameter measurements included weight, food intake, water intake, residential space selection, breeding activity, and aggression. The study results can be used to evaluate the benefits of using Hwangtoh as a cement replacing admixture for lifestyle, health and sustainability.
在本研究中，通过调整混凝土混合料的成分，将混凝土混合料中水泥的用量减至最少，以减少对使用者的毒性影响。通过使用各种外加剂（磨细粒化高炉矿渣、粉煤灰、普通硅酸盐水泥和活性黄土粉）来实现水泥用量的减少。为了将该混合料应用于建筑施工，进行了诸如抗压强度、坍落度和pH值等材料性能测试。初步实验结果表明，黄土混凝土可作为一种健康的建筑材料。此外，通过动物临床试验对黄土砂浆的健康问题和影响进行了定量评估。将小鼠放置在黄土砂浆和水泥砂浆笼中以记录它们的活动情况。为进行该试验，制作了五个带有黄土和普通硅酸盐水泥砂浆地板的笼子，黄土粉的替代比例分别为正常水泥砂浆混合比例的20%、40%、60%和80%，并制作了两个带有黄土砂浆居住区域的笼子。活动参数测量包括体重、食物摄入量、饮水量、居住空间选择、繁殖活动和攻击性。研究结果可用于评估使用黄土作为水泥替代外加剂对生活方式、健康和可持续性的益处。
