纤维素醚改性砂浆在不同养护方式下的性能研究  

Study of properties of the mortar modified by cellulose ethers in different curing conditions

作　　者：任传尧[1] 钱晓倩[1] 方明晖[1] 

机构地区：[1]浙江大学建筑工程学院建筑材料研究所,浙江杭州310058

出　　处：《混凝土》2010年第12期105-106,124,共3页Concrete

摘　　要：研究了羟丙基甲基纤维素醚改性砂浆在4种不同养护方式下的力学性能,硬化砂浆体积密度和含水率。试验结果表明:在相对干燥的养护环境下,纤维素醚掺量为0.10%的砂浆28 d强度可以超过未掺加纤维素醚的砂浆;养护条件对不掺纤维素醚的砂浆28 d强度影响较大,但对掺加纤维素醚的砂浆影响相对较小。此外,养护方式对硬化砂浆体积密度影响不大,但对含水率有很大影响。Study the mechanical properties of mortar modified by hydroxypropyl methyl cellulose ethers,volume density of hardened mortar and water ratio in four different curing conditions.The experimental results show that under the relatively dry curing conditions,strength of mortar with dosage of 0.10% cellulose ethers can exceed the ones without cellulose ethers.The influence of curing conditions on 28 day strength of the mortar mixed with cellulose ether is relatively greater,but the influence on the ones without cellulose ether is relatively smaller.In addition,curing conditions have little affects on volume density of hardened mortar but have a great affects on water ratio.

关 键 词：养护条件 纤维素醚 砂浆 抗压强度 

分 类 号：TU528.042[建筑科学—建筑技术科学]