In order to meet the application requirements of special high-strength,crack resistant,and non shrinkage cement-based grouting materials for prefabricated building column base grouting,C60 steel fiber pea stone grouting material was studied.Single factor experiments were conducted to investigate the effects of pea stone and steel fibers on the performance of grouting materials;Exploring the influence of mineral admixtures on the performance of grouting materials through a single factor experimental system;Engineering application research materials engineering adaptability.The results indicate that(1)After solidification and hardening in the system,the hardened body structure will become denser and the ability to resist punching and shearing will be enhanced.The optimal dosage is 8.0％.(2)The addition of steel fibers will significantly increase the viscosity of the system,deteriorate the construction performance,but will improve the later strength of the grouting material.The optimal amount of steel fibers is 4.0％.(3)Mineral powder significantly improves the later strength,with a compressive strength increase of over 3.3％after 28 days.Fly ash increases the initial fluidity.(4)The initial flowability of steel fiber pea stone grouting material obtained from engineering application reaches 300 mm,and the compressive strength after 28 days exceeds 65 MPa,with a compressive strength surplus value exceeding 8.33％.
关键词
装配式建筑/水泥基灌浆料/柱脚灌浆/豆石/钢纤维/矿物掺合料
Key words
prefabricated buildings/cement based grouting material/grouting of column base/bean stone/steel fiber/mineral admixtures
维普
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