混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
CHINA CONCRETE AND CEMENT PRODUCTS
2014年
9期
86-89
,共4页
贾丽莉%高育欣%赵日煦%彭园%黄义雄%霍亮
賈麗莉%高育訢%趙日煦%彭園%黃義雄%霍亮
가려리%고육흔%조일후%팽완%황의웅%곽량
白云石粉%混凝土掺合料%混凝土耐久性
白雲石粉%混凝土摻閤料%混凝土耐久性
백운석분%혼응토참합료%혼응토내구성
Dolomite powder%Concrete admixture%Durability of concrete
用磨细白云石、白云石-水淬矿渣共磨物料作为混凝土矿物掺合料,研究了单掺白云石粉、白云石-水淬矿渣复合矿物掺合料对混凝土耐久性的影响。研究结果表明,单掺白云石粉使C30混凝土的电通量值增加15%,同时使碳化深度增加,并使100次冻融循环后的动弹模量损失率最大达到37.6%,弱化了混凝土的抗氯离子侵蚀性和抗碳化和抗冻性能;而单掺白云石粉使混凝土的抗硫酸盐侵蚀系数提高1.7%,抗硫酸盐侵蚀性能改善。白云石-水渣复合矿物掺合料与单掺白云石粉相比,改善了混凝土的抗氯离子渗透性、抗碳化、抗冻融性能;当水淬矿渣与白云石比例为3.5:6.5时,混凝土的耐久性包括抗氯离子侵蚀性、抗碳化、抗冻性能最好。
用磨細白雲石、白雲石-水淬礦渣共磨物料作為混凝土礦物摻閤料,研究瞭單摻白雲石粉、白雲石-水淬礦渣複閤礦物摻閤料對混凝土耐久性的影響。研究結果錶明,單摻白雲石粉使C30混凝土的電通量值增加15%,同時使碳化深度增加,併使100次凍融循環後的動彈模量損失率最大達到37.6%,弱化瞭混凝土的抗氯離子侵蝕性和抗碳化和抗凍性能;而單摻白雲石粉使混凝土的抗硫痠鹽侵蝕繫數提高1.7%,抗硫痠鹽侵蝕性能改善。白雲石-水渣複閤礦物摻閤料與單摻白雲石粉相比,改善瞭混凝土的抗氯離子滲透性、抗碳化、抗凍融性能;噹水淬礦渣與白雲石比例為3.5:6.5時,混凝土的耐久性包括抗氯離子侵蝕性、抗碳化、抗凍性能最好。
용마세백운석、백운석-수쉬광사공마물료작위혼응토광물참합료,연구료단참백운석분、백운석-수쉬광사복합광물참합료대혼응토내구성적영향。연구결과표명,단참백운석분사C30혼응토적전통량치증가15%,동시사탄화심도증가,병사100차동융순배후적동탄모량손실솔최대체도37.6%,약화료혼응토적항록리자침식성화항탄화화항동성능;이단참백운석분사혼응토적항류산염침식계수제고1.7%,항류산염침식성능개선。백운석-수사복합광물참합료여단참백운석분상비,개선료혼응토적항록리자삼투성、항탄화、항동융성능;당수쉬광사여백운석비례위3.5:6.5시,혼응토적내구성포괄항록리자침식성、항탄화、항동성능최호。
The ground dolomite and co-grinding powders of dolomite and water-quendched granulated blost furnace slag were used as concrete admixtures, and the influence of admixture on the durability of concrete are studied. The results show that by single-mixed with dolomite powder, the electric flux of C30 concrete increase by 15%, the carbonation depth increase, and the loss rate of dynamic elastic modulus can reach up to 37.6% after 100 freeze-thaw cycles, the properties of chloride ion penetration-resistant, anti-carbonization and anti-freeze of concrete are weakened;however, the sulphate resistance coefficient of concrete increase by 1.7%, the sulfate resistance is improved. Compared with single-mixed dolomite powder, mixing dolomite-slag composite mineral admixture can improve properties of chloride ion penetration-resistant, anti-carbonization and anti-freeze of concrete, especially when the ratio of slag and dolomite is 3.5:6.5, the durability of concrete will be the best.