CAJ | 학술논문

以某大坝工程为研究对象，采用现场浇注成型的试件进行全级配和湿筛二级配混凝土强度试验。试验结果表明，在28 d 、90 d 、180 d 三个龄期时全级配与湿筛二级配混凝土的抗压强度比值最大，劈拉强度比值次之，弹性模量比值最小。而后，结合其它大坝混凝土强度实测试验数据，统计分析了全级配与湿筛二级配混凝土的强度比值关系。分析结果表明，全级配和湿筛二级配混凝土强度比值均服从正态分布，由此分别给出了具有95％保证率的全级配与湿筛二级配混凝土抗压、劈拉强度比值，从而可通过湿筛二级配混凝土强度预测全级配混凝土强度。
이모대패공정위연구대상，채용현장요주성형적시건진행전급배화습사이급배혼응토강도시험。시험결과표명，재28 d 、90 d 、180 d 삼개령기시전급배여습사이급배혼응토적항압강도비치최대，벽랍강도비치차지，탄성모량비치최소。이후，결합기타대패혼응토강도실측시험수거，통계분석료전급배여습사이급배혼응토적강도비치관계。분석결과표명，전급배화습사이급배혼응토강도비치균복종정태분포，유차분별급출료구유95％보증솔적전급배여습사이급배혼응토항압、벽랍강도비치，종이가통과습사이급배혼응토강도예측전급배혼응토강도。
Taking a dam for research object ,the cast-in-situ specimens are tested to study the strength of fully-graded and wet-screened two-graded concrete .The experimental results show that on the concrete with the ages of 28 ,90 and 180 days ,the ratio of the compressive strength of fully-graded and wet-screened two-graded concrete is largest ,and the splitting-tensile strength ratio is secondary ,while the elastic modulus ratio is lowest .Furthermore ,the relationship be-tween the strength ratio values for fully-graded and wet-screened two-graded concrete is analyzed statistically .It is found that their ratio values of compressive strength and splitting-tensile strength all follow normal distribution .Based on the distribution ,the compressive and splitting tensile strength ratios of fully-graded and wet-screened two-graded concrete with a 95% performance assurance can be calculated and obtained separately .Thereby ,the strength of fully-graded con-crete can be estimated by testing the strength of wet-screened two-graded concrete .