CAJ | 학술논문

针对粉煤灰大量加入胶结材料后降低材料性能的问题,通过实验室正交实验,找到一种早强剂配方,得到粉煤灰占充填材料固体质量80%以上,水固比为0．94,8 h抗压强度大于0．9 MPa,1 d抗压强度大于3 MPa、3 d抗压强度大于4 MPa,平均初凝时间100 min的最终材料配方。按配方比例在桃山矿井下工业实验后,证明该材料能够适应井下环境,具有快凝、早强、接顶率高等优良特点。
침대분매회대량가입효결재료후강저재료성능적문제,통과실험실정교실험,조도일충조강제배방,득도분매회점충전재료고체질량80%이상,수고비위0．94,8 h항압강도대우0．9 MPa,1 d항압강도대우3 MPa、3 d항압강도대우4 MPa,평균초응시간100 min적최종재료배방。안배방비례재도산광정하공업실험후,증명해재료능구괄응정하배경,구유쾌응、조강、접정솔고등우량특점。
This paper arises from the necessity of improving the poor-performance materialdue to the addition of a high volume of cementing material into fly ash by developing the best ratio of early strength agent using orthogonal experiment and producing an optimum formula of filling materials. The newly de-veloped novel formula consists of fly ash accounting for over 80% of solid mass in filling material;the 0 . 94 of water-solid ratio; after-8-hour compressive strength more than 0 . 9 MPa; after-1-d compressive strength more than 3 MPa ;and after-3-d compressive strength more than 4 MPa; the average initial set-ting time of 100 min. The industrial experiment on the ratio formula in underground of Taoshan mine proves that the material capable of a better adaptation to the environment in underground mine boasts ad-vantages such as rapid solidification, early strength, and higher rate of support.