- 郭 超1，李秋義2，岳公冰2
引用本文摘 ? 要：為充分發揮無機修復材料在混凝土結構損傷中的應用，研究了骨料種類及粒徑、減水劑摻量、膠砂比、膠粉摻量、聚丙烯（PP）纖維摻量、消泡劑摻量對自密實快速修復砂漿工作性及力學性能的影響。結果表明：石英砂砂漿比河砂砂漿有更高的抗壓強度，但韌性較差；綜合考慮性能及經濟性，減水劑摻量為1.6%較為適宜；隨著膠砂比降低，砂漿的力學性能下降；摻入2.5%膠粉的砂漿比空白組流動度提高了3.1%，抗折強度提高了8.5%，但過量的膠粉對砂漿性能產生消極影響；PP纖維對砂漿的工作性無明顯影響，但隨著其摻量增加，砂漿的抗壓強度下降；消泡劑的摻入減小了砂漿的流動度，但摻量超過0.1%后幾乎不再變化，而砂漿的力學性能隨著其摻量的增加先上升后下降。 Abstract: To enhance the application of inorganic repair materials in the damage of concrete structures, the effects of sand type and particle size, superplasticizer dosage, binder sand ratio, latex powder and PP fiber, defoamer dosage on the basic performance of self-compacting rapid repair mortar were studied. The results show that the mortar made of quartz sand has higher compressive strength but lower toughness compared with river sand. From the performance and economy point of view, 1.6% dosage of superplasticizer is more suitable. The mechanical properties of the mortar decrease with the decrease of the binder sand ratio. 2.5% latex powder can improve 3.1% fluidity and 8.5% flexural strength of mortar, but too much latex powder will have a negative impact on the properties. PP fiber has no obvious effect on the workability of mortar, but with the increase of its content, the compressive strength shows a downward trend. The addition of defoamer reduces the fluidity of mortar, but it almost does not change when the content exceeds 0.1%. The mechanical strength first increases and then decreases with the increase of defoamer dosage.
郭超,李秋義,岳公冰.水泥基自密實修復砂漿的制備及性能研究[J].混凝土與水泥制品,2022(6):1-5. GUO C,LI Q Y,YUE G B.Research on Preparation and Properties of Cement-based Self-compacting Repair Mortar[J].China Concrete and Cement Products,2022(6):1-5.