混凝土
混凝土
혼응토
CONCRETE
2015年
7期
31-34
,共4页
惠弘毅%李宗利%杨华%吕从聪
惠弘毅%李宗利%楊華%呂從聰
혜홍의%리종리%양화%려종총
混凝土%强度等级%立方体抗压强度%劈裂抗拉强度%尺寸效应
混凝土%彊度等級%立方體抗壓彊度%劈裂抗拉彊度%呎吋效應
혼응토%강도등급%립방체항압강도%벽렬항랍강도%척촌효응
concrete%strength grade%cubic compressive strength%splitting tensile strength%size effect
为了研究不同强度等级混凝土强度的尺寸效应，分别对C15、C20和C30等级混凝土，边长分别为100、150和150 mm的立方体试件进行了抗压和劈裂抗拉试验。建立了不同强度等级混凝土抗压与劈裂抗拉强度尺寸效应律的计算式，并通过试验数据验证了其适用性。试验结果表明，混凝土的立方体抗压强度和劈裂抗拉强度均存在尺寸效应，随着强度等级增大尺寸效应显著性逐渐增大；抗拉尺寸效应大于抗压尺寸效应。
為瞭研究不同彊度等級混凝土彊度的呎吋效應，分彆對C15、C20和C30等級混凝土，邊長分彆為100、150和150 mm的立方體試件進行瞭抗壓和劈裂抗拉試驗。建立瞭不同彊度等級混凝土抗壓與劈裂抗拉彊度呎吋效應律的計算式，併通過試驗數據驗證瞭其適用性。試驗結果錶明，混凝土的立方體抗壓彊度和劈裂抗拉彊度均存在呎吋效應，隨著彊度等級增大呎吋效應顯著性逐漸增大；抗拉呎吋效應大于抗壓呎吋效應。
위료연구불동강도등급혼응토강도적척촌효응，분별대C15、C20화C30등급혼응토，변장분별위100、150화150 mm적립방체시건진행료항압화벽렬항랍시험。건립료불동강도등급혼응토항압여벽렬항랍강도척촌효응률적계산식，병통과시험수거험증료기괄용성。시험결과표명，혼응토적립방체항압강도화벽렬항랍강도균존재척촌효응，수착강도등급증대척촌효응현저성축점증대；항랍척촌효응대우항압척촌효응。
In order to investigate the size effectof different strength grade concrete,a series of compression and tensile splitting tests were performed on 54 cubic specimens with three different strength grades of C15,C20 and C30,and the specimen size length of 100, 150 and 200 mm. The size effect equation on the concrete was proposed based on the test result. The results show that the size effect ob-viously exists in the cubic compressive and tensile splitting strength of all three strength grades,and that the size effect is significantly enhanced with the increase of the strength grade. The size effect of tensile splitting strength is much strong than that of compressives-trength.
