| 机制砂和天然细砂复合配置混凝土的强度性能 |
| |
| 引用本文： | 王黎怡,许利惟.机制砂和天然细砂复合配置混凝土的强度性能[J].福建建筑高等专科学校学报,2013(4):315-319. |
| |
| 作者姓名： | 王黎怡 许利惟 |
| |
| 作者单位： | 福建工程学院土木工程学院,福建福州350118 |
| |
| 基金项目： | 福建省教育厅A类科技项目（JA12234）;福建工程学院科研项目（GY-213023） |
| |
| 摘 要： | 为研究机制砂混凝土的抗压强度和劈拉强度的变化规律，对低水胶比和20％矿渣掺量下配制C35的机制砂混凝土进行试验研究。试验数据表明：配置机制砂混凝土需要提高砂率，砂率一般宜大于38％；机制砂混凝土的早期强度较天然砂混凝土低，但后期增长较快；相对于天然沙，要更加重视对不同批次机制砂的质量检测；适当提高高效减水剂的掺量可以改善机制砂混凝土的工作性。
|
| 关 键 词： | 机制砂混凝土 抗压强度 劈拉强度 砂率 低水胶比 |
Experimental study on the strength of concrete mixed with machine-made sand and natural fine sand |
| |
| Wang Liyi,Xu Liwei.Experimental study on the strength of concrete mixed with machine-made sand and natural fine sand[J].Journal of Fujian College of Architecture & C.E.,2013(4):315-319. |
| |
| Authors: | Wang Liyi Xu Liwei |
| |
| Affiliation: | (School of Civil Engineering, Fujian University of Technology, Fuzhou 350118, China) |
| |
| Abstract: | ： To investigate the change laws of compressive strength and splitting tensile strength of ma- chine-made sand concrete, C35 was prepared with 20% slag powder at a low-water binder ratio. The replacement ratio of machine-made sand to natural fine sand was 1 ： 0,2： 1,1 ： 1,1 ： 2,0： 1. The re- sults show that increasing the sand ratio can improve the machine-made sand concrete, that the opti- mal sand ratio is 38%. The strength of the machine-made sand concrete is considerably lower than that of the natural fine sands concrete at the early stage, but it improves at the later stage. Sugges- tions on improving the quality of the machine-made sand concrete were proposed, which include en- hancing the quality control and increasing the water reducer dosage properly. |
| |
| Keywords: | machine-made sand concrete compressive strength splitting tensile strength sand ra-tio low-water hinder ratio |
| 本文献已被 维普 等数据库收录！ |
|
