混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
CHINA CONCRETE AND CEMENT PRODUCTS
2014年
11期
6-10
,共5页
钢纤维%纳米 SiO2%纳米 CaCO3%劈拉强度%抗折强度
鋼纖維%納米 SiO2%納米 CaCO3%劈拉彊度%抗摺彊度
강섬유%납미 SiO2%납미 CaCO3%벽랍강도%항절강도
Steel fiber%Nanometer SiO2%Nanometer CaCO3%Splitting tensile strength%Flexural strength
在混凝土中同时加入钢纤维和纳米矿粉，对比研究了钢纤维和纳米矿粉掺量以及基体强度对钢纤维纳米混凝土劈拉性能和抗折性能的影响规律。结果表明，钢纤维的加入及增大掺量，改善了试件的破坏特征，劈拉和抗折强度均显著增长；基体强度提高的同时，拉压强度比和折压强度比降低；纳米 SiO2和纳米 CaCO3掺量的增大，可小幅度提高劈拉和抗折强度，但脆性也相应提高。钢纤维增强增韧作用、纳米矿粉微填充及促进水化作用共同改善了混凝土的力学性能。
在混凝土中同時加入鋼纖維和納米礦粉，對比研究瞭鋼纖維和納米礦粉摻量以及基體彊度對鋼纖維納米混凝土劈拉性能和抗摺性能的影響規律。結果錶明，鋼纖維的加入及增大摻量，改善瞭試件的破壞特徵，劈拉和抗摺彊度均顯著增長；基體彊度提高的同時，拉壓彊度比和摺壓彊度比降低；納米 SiO2和納米 CaCO3摻量的增大，可小幅度提高劈拉和抗摺彊度，但脆性也相應提高。鋼纖維增彊增韌作用、納米礦粉微填充及促進水化作用共同改善瞭混凝土的力學性能。
재혼응토중동시가입강섬유화납미광분，대비연구료강섬유화납미광분참량이급기체강도대강섬유납미혼응토벽랍성능화항절성능적영향규률。결과표명，강섬유적가입급증대참량，개선료시건적파배특정，벽랍화항절강도균현저증장；기체강도제고적동시，랍압강도비화절압강도비강저；납미 SiO2화납미 CaCO3참량적증대，가소폭도제고벽랍화항절강도，단취성야상응제고。강섬유증강증인작용、납미광분미전충급촉진수화작용공동개선료혼응토적역학성능。
Both of steel fibers and nanometer materials are mixed into concrete, then the effects of mix amount of steel fiber and nanometer materials as well as matrix strength on splitting tensile and flexural strength of steel fiber -nanometer material reinforced concrete are investigated. The experimental results show that the failure characteristic, split-ting tensile and flexural strength of specimens are improved significantly in the case of mixing with steel fiber and increas-ing of mix amount of steel fiber; with the increasing of matrix strength, the tension-compression ratio and flexure-compres-sion ratio decreased; with the increasing of mix amount of nanometer SiO2 and CaCO3, the splitting tensile, flexural strength brittleness increased to a limited extent. The improved mechanical properties benefited from the effects of rein-forcing and toughening for steel fiber, and the effects of filling and promoting hydration for nanometer materials.
