水泥胶砂强度尺寸效应试验研究  

Experimental Study on Strength of Cement Mortar with Different Sizes

作　　者：葛根旺 潘随伟 任安琪 陈秀玲 陈德鹏[2] GE Gen-wang;PAN Sui-wei;REN An-qi;CHEN Xiu-ling;CHEN De-peng(Ma’anshan College,Ma’anshan 243100,China;Anhui University of Technology,Ma’anshan 243100,China)

机构地区：[1]马鞍山学院,马鞍山243100 [2]安徽工业大学,马鞍山243100

出　　处：《建材世界》2022年第1期23-26,共4页The World of Building Materials

基　　金：安徽高校自然科学研究项目(KJ2019A0917);安徽高校自然科学研究项目(KJ2020A0845);安徽省住房城乡建设科学技术计划(2021-YF69);安徽省住房城乡建设科学技术计划(2021-YF68).

摘　　要：为探究水泥基胶砂强度尺寸效应的影响规律,通过改变用水量,调整各试验组的水胶比(W/C),来研究不同尺寸下水泥胶砂强度尺寸效应的影响规律。其中试块分别采用40 mm×40 mm×160 mm和20 mm×40 mm×160 mm的棱柱体。结果表明:当水灰比较小时,尺寸效应对抗折强度的影响较为明显,但是对抗压强度影响并不明显。通过对试验数据进行回归分析得出标准试件与非标准试件之间的转换关系,并依据混凝土强度经验公式推演拟算出非标准试件下抗折与抗压强度的关系式方程。In order to explore the influence law of size effect of cement-based mortar strength,this paper studied the influence law of size effect of cement-based mortar strength under different sizes by changing the water consumption and adjusting the water-binder ratio(W/C)of each experimental group.The test block sizes of 40 mm×40 mm×160 mm and 20 mm×40 mm×160 mm prismatic samples were tested.The results show that when the water-cement ratio is small,the size effect has a more obvious effect on the flexural strength,but the effect on the compressive strength is not obvious.Through regression analysis of test data,the conversion relationship between standard specimens and non-standard specimens is obtained,and the relation equation of flexural strength and compressive strength under non-standard specimens is deduced according to empirical formula of concrete strength.

关 键 词：胶凝材料 水胶比 强度 尺寸效应 方程 

分 类 号：TU5[建筑科学—建筑技术科学]