Microscopic Analysis of Cementitious Sand and Gravel Damming Materia

作     者：Ran Wang Aimin Gong Shanqing Shao Baoli Qu Jing Xu Fulai Wang Feipeng Liu 

作者机构：College of Water ConservancyYunnan Agricultural UniversityKunming650201China Tianqi Engineering Consulting Co.Ltd.Kunming650000China Institute of International Rivers and Ecological SecurityYunnan UniversityKunming650500China 

出 版 物：《Fluid Dynamics & Materials Processing》 (流体力学与材料加工（英文）)

年 卷 期：2024年第20卷第4期

页      面：749-769页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the Scientific Research Fund of Yunnan Provincial Department of Education(2022Y286) 15th Student Science and Technology Innovation and Entrepreneurship Action Fund Project of Yunnan Agricultural University(2022ZKX098) the Yunnan University Professional Degree Graduate Student Practical Innovation Fund Project(Grant Number ZC-22222374) the Scientific Research Fund Project of Yunnan Education Department(Grant Numbers 2023J1974 and 2023J1976) 

主　　题：Cementitious sand gravel material scanning electron microscopy optimal mix ratio maximum strength 

摘      要：The mechanical properties of cementitious sand and gravel damming material have been experimentally determined by means of microscopic SEM(Scanning Electron Microscopy)image *** results show that the combination of fly ash and water can fill the voids in cemented sand and gravel test blocks because of the presence of hydrated calcium silicate and other substances;thereby,the compactness and mechanical properties of these materials can be greatly *** every 10 kg/m^(3) increase in the amount of cementitious material,the density increases by about 2%,and the water content decreases by 0.2%.The amount of cementitious material used in the sand and gravel in these tests was 80-110 kg/m^(3),the water-binder ratio was ***,the splitting tensile strength was 1/10 of the compressive strength,and the maximum strength was 7.42 MPa at 90 *** optimal mix ratio has been found to be 50 kg of cement,60 kg of fly ash and 120 kg of water(C50F60W120).The related dry density was 2.6 g/cm^(3),the water content was 6%,and the water-binder ratio was 1.09.