節能與環保_2020_《混凝土與水泥制品》雜志社

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節能與環保

外摻材料對透水混凝土性能影響的研究進展

崔征1,2,3,4，王達道1,2,3,4，徐志峰1,2,3,4，祝燁然1,2,3,4，唐修生1,2,3,4

2020年第11期

摘要

引用本文

摘 ? 要：透水混凝土是“海綿城市”理念中的重要一環，對于減輕排水系統負擔、緩解城市熱島效應、吸聲降噪等具有積極作用。外摻材料的不同直接影響透水混凝土的力學性能、透水性能、抗凍融性能等，基于此，敘述了傳統化學外加劑、復摻礦物摻合料和化學外加劑、樹脂類聚合物改性劑、增強增韌材料對透水混凝土性能的影響，并對其研究方向進行了展望。 Abstract: Pervious concrete is an important part of the concept of "sponge city", which plays a positive role in reducing the burden of drainage system, alleviating the urban heat island effect, and absorbing noise. The different admixture materials directly affect the mechanical properties, water permeability and freeze-thaw resistance of pervious concrete. On this basis, the effects of traditional chemical admixtures, mixing of mineral admixture and chemical admixture, resin polymer modifiers, and reinforcement and toughening materials on the properties of pervious concrete are described, and their research directions are prospected.

崔征,王達道,徐志峰,等.外摻材料對透水混凝土性能影響的研究進展[J].混凝土與水泥制品,2020(11):83-86,91. CUI Z,WANG D D,XU Z F,et al.Research Progress on the Effects of Admixture Materials on the Properties of Pervious Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11): 83-86,91.

膨潤土和石灰石粉對珊瑚混凝土力學與耐久性能的影響

賈慧娜1，李亞麗1，張舜泉2

2020年第11期

摘要

引用本文

摘 ? 要：利用鈣基膨潤土和石灰石粉部分取代水泥，研究了不同摻量的膨潤土、石灰石粉對珊瑚混凝土力學性能與耐久性能的影響。結果表明：復摻膨潤土和石灰石粉可明顯提高珊瑚混凝土的抗壓強度和劈裂抗拉強度，且當膨潤土摻量為15%時達到最大值；復摻膨潤土和石灰石粉可有效提高珊瑚混凝土的抗Cl-滲透性和抗硫酸鹽侵蝕能力，且二者的最佳摻量均為15%。 Abstract: The effects of calcium-based bentonite and limestone powder on the mechanical properties and durability of coral concrete were studied by partially substituting cement powder with bentonite and limestone powder. The results show that the compounding of bentonite and limestone powder can significantly improve the compressive strength and splitting tensile strength of coral concrete, and reach the maximum value when the amount of bentonite is 15%. Moreover, the compounding of bentonite and limestone powder can effectively improve the resistance of coral concrete to chloride ion permeability and sulfate resistance, and the optimal content of both is 15%. ?

賈慧娜,李亞麗,張舜泉.膨潤土和石灰石粉對珊瑚混凝土力學與耐久性能的影響[J].混凝土與水泥制品,2020(11):87-91. JIA H N,LI Y L,ZHANG S Q.Experimental Study on the Mechanical Properties and Durability of Coral Concrete Mixed with Bentonite and Limestone Powder[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11): 87-91.

鋼渣和粉煤灰對重混凝土性能的影響

侯景鵬，陳群，史巍，劉俊龍

2020年第11期

摘要

引用本文

摘 ? 要：研究了鋼渣和粉煤灰對C30重晶石防輻射混凝土工作性、力學性能、收縮性能、抗凍性能、抗碳化性能以及抗滲性能的影響。結果表明：重混凝土的坍落度隨粉煤灰摻量的增加而增加，隨鋼渣摻量的增加而降低；重混凝土的28 d抗壓強度隨粉煤灰摻量的增加而先增加后降低，粉煤灰摻量為30%時，28 d抗壓強度最大；重混凝土的收縮隨鋼渣和粉煤灰摻量的增加而降低，粉煤灰摻量為40%、鋼渣摻量為30%時重混凝土的60 d收縮最小，為191 με；鋼渣摻量為30%、粉煤灰摻量為40%時重混凝土凍融循環后的相對動彈性模量降低最小，抗凍性能最好；重混凝土的28 d碳化深度隨粉煤灰摻量的增加而線性增加；重混凝土的滲水高度隨鋼渣和粉煤灰摻量的增加而降低，粉煤灰摻量為40%、鋼渣摻量為30%的重混凝土滲水高度最小，為基準組的9.3%，抗滲性能大幅提高。 Abstract: The influence of steel slag and fly ash on the workability, mechanical properties, shrinkage, frost resistance, carbonation resistance and water permeability of C30 barite shield concrete was studied. The results show that the slump of heavy concrete increases with the increase of fly ash content, and decreases with the increase of steel slag content. The 28 d compressive strength of heavy concrete increases first and then decreases with fly ash content, and when the fly ash content is 30%, the 28 d compressive strength is the highest. The shrinkage of heavy concrete decreases with the addition of steel slag and fly ash, and when fly ash content is 40%, steel slag content is 30%, the shrinkage of heavy concrete at 60 d is the lowest, which is 191 με. When steel slag content is 30% and fly ash content is 40%, the relative dynamic elastic modulus of heavy concrete after freeze-thawing cycle decreases the least and the frost resistance is the best. The 28 d carbonation depth of heavy concrete increases linearly with fly ash content. The water seepage depth of heavy concrete decreases with the addition of fly ash and steel slag, and when fly ash content is 40%, steel slag content is 30%, the heavy concrete has the lowest water seepage depth, which is 9.3% of the reference heavy concrete, and the water seepage performance is greatly improved.

侯景鵬, 陳群,史巍,等.鋼渣和粉煤灰對重混凝土性能的影響[J].混凝土與水泥制品,2020(11):92-95. HOU J P,CHEN Q,SHI W,et al.Effect of Steel Slag and Fly Ash on the Performance of Heavy Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11):92-95.

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