混凝土
混凝土
혼응토
CONCRETE
2015年
7期
111-112,117
,共3页
塑钢纤维%橡胶混凝土%力学性能%破坏形态
塑鋼纖維%橡膠混凝土%力學性能%破壞形態
소강섬유%상효혼응토%역학성능%파배형태
plastic fiber%rubber concrete%mechanical properties%failure mode
将6~18目橡胶颗粒按细骨料的10％掺入混凝土后，外掺2、4、6、8 kg？m3的塑钢纤维，研究橡胶混凝土基本力学性能的变化规律。试验结果表明：随着掺量的增加，7 d抗压强度逐渐降低；28 d抗压强度、轴心抗压强度、弹性模量、压折比均先升高后降低；28 d抗折强度有增大的趋势；劈裂抗拉强度变化很小。掺入塑钢纤维的橡胶混凝土在受力后出现的裂缝细小，扩展速度相对缓慢，卸载后试件能更完整的连在一起。
將6~18目橡膠顆粒按細骨料的10％摻入混凝土後，外摻2、4、6、8 kg？m3的塑鋼纖維，研究橡膠混凝土基本力學性能的變化規律。試驗結果錶明：隨著摻量的增加，7 d抗壓彊度逐漸降低；28 d抗壓彊度、軸心抗壓彊度、彈性模量、壓摺比均先升高後降低；28 d抗摺彊度有增大的趨勢；劈裂抗拉彊度變化很小。摻入塑鋼纖維的橡膠混凝土在受力後齣現的裂縫細小，擴展速度相對緩慢，卸載後試件能更完整的連在一起。
장6~18목상효과립안세골료적10％참입혼응토후，외참2、4、6、8 kg？m3적소강섬유，연구상효혼응토기본역학성능적변화규률。시험결과표명：수착참량적증가，7 d항압강도축점강저；28 d항압강도、축심항압강도、탄성모량、압절비균선승고후강저；28 d항절강도유증대적추세；벽렬항랍강도변화흔소。참입소강섬유적상효혼응토재수력후출현적렬봉세소，확전속도상대완만，사재후시건능경완정적련재일기。
The 6~18 mesh rubber particles incorporated into concrete by 10%fine aggregate,then mixed 2,4,6,8 kg?m3 of steel fiber in order to variation the law of the basic mechanical properties about rubber concrete. Experimental results show that the 7 d compressive strength gradually decreased,At the same time,the 28 d compressive strength,axial compressive strength,and elastic modulus were crushing ratio rise before. While the 28 d flexural strength has a tendency to increase,and the splitting tensile strength changed little with the increase of dosage. When the rubber concrete adding steel fiber,the cracks were thin after forcing,the pace of expansion were rela-tively slow,and the test piece were more together complete after unloading.
