磷渣胶凝材料高温力学性能试验研究
|
摘要
利用工业固体废弃物磷渣制备无机胶凝材料,并对其胶砂试件的高温力学性能进行了实验研究。分别制备了普通硅酸盐水泥--磷渣复合胶凝体系(PSC-x,磷渣取代量分别为0、20%、40%和60%)和碱激发磷渣胶凝体系(PSA-x,Na OH溶液浓度分别为6 mol/L、8 mol/L、10mol/L和12 mol/L),测试了常温及200℃、400℃、600℃、800℃、1 000℃、1 200℃高温作用后胶砂试件的质量损失、抗折强度和抗压强度。结果表明:PSA-x胶凝体系的质量损失低于PSC-x体系。PSA-x体系有着较好的耐高温性能,1 200℃作用后,PSA-x的残余抗折强度可达到常温时的35%~75%,残余抗压强度可达到常温时的45%~63%。
Phosphorus slag was used to manufacture mortar specimens and their mechanical properties after exposure to high temperatures were studied. Portland cement-phosphorus slag composite system(PSC-x, replacements of phosphorus slag were 0, 20%, 40% and 60%, respectively) and alkali-activated phosphorus slag system(PSA-x, concentrations of NaOH solution were 6 mol/L, 8 mol/L, 10 mol/L and 12 mol/L, respectively) were prepared, respectively. Their mass loss, flexural strength and compressive strength were tested at room temperature and after exposure to 200 ℃, 400 ℃, 600 ℃, 800 ℃, 1 000 ℃ and 1 200 ℃, respectively. The results show that the mass loss of PSA-x system was lower than that of PSC-x system. After 1200 ℃, PSA-x system still had 35%-75% flexural strength and 45%-63% compressive strength remained, indicating that such system had a good resistance to high temperature.
Phosphorus slag was used to manufacture mortar specimens and their mechanical properties after exposure to high temperatures were studied. Portland cement-phosphorus slag composite system(PSC-x, replacements of phosphorus slag were 0, 20%, 40% and 60%, respectively) and alkali-activated phosphorus slag system(PSA-x, concentrations of NaOH solution were 6 mol/L, 8 mol/L, 10 mol/L and 12 mol/L, respectively) were prepared, respectively. Their mass loss, flexural strength and compressive strength were tested at room temperature and after exposure to 200 ℃, 400 ℃, 600 ℃, 800 ℃, 1 000 ℃ and 1 200 ℃, respectively. The results show that the mass loss of PSA-x system was lower than that of PSC-x system. After 1200 ℃, PSA-x system still had 35%-75% flexural strength and 45%-63% compressive strength remained, indicating that such system had a good resistance to high temperature.
引文
[1]刘秋美.磷渣粉在混凝土中的应用研究[D].贵州:贵州大学,2007.
[2]冷发光,冯乃谦.磷渣综合利用的研究与应用现状[J].中国建材科技,1999(3):43-46.
[3]徐田娟,栗静静.磷矿渣掺合料性能试验研究[J].新型建筑材料,2012,39(9):14-18.
[4]程麟,朱成桂,盛广宏.碱磷渣水泥的力学性能及微观结构[J].硅酸盐学报,2006,34(5):604-609.
[5] ALLAHVERDI A, PILEHVAR S, MAHINROOSTA M. Influence of curing conditions on the mechanical and physical properties of chemically-activated phosphorous slag cement[J]. Powder Technology,2016, 288:132-139.
[6] MA Q, GUO R, ZHAO Z, et al. Mechanical properties of concrete at high temperature—A review[J]. Construction&Building Materials,2015, 93:371-383.
[7] CASTELLANO C C, BONAVETTI V L, DONZA H A, et al. The effect of w/b and temperature on the hydration and strength of blastfurnace slag cements[J]. Construction&Building Materials, 2016, 111:679-688.
[8] MENDES A, SANJAYAN J G, GATES W P, et al. The influence of water absorption and porosity on the deterioration of cement paste and concrete exposed to elevated temperatures, as in a fire event[J]. Cement&Concrete Composites, 2012, 34(9):1067-1074.
[9]韩方晖,刘娟红,阎培渝.温度对水泥-矿渣复合胶凝材料水化的影响(英文)[J].硅酸盐学报, 2016, 44(8):1071-1080.
[10] DONATELLO S, KUENZEL C, PALOMO A, et al. High temperature resistance of a very high volume fly ash cement paste[J]. Cement&Concrete Composites, 2014, 45(1):234-242.
[11] YAZICI S, SEZER G S, SENGüL H. The effect of high temperature on the compressive strength of mortars[J]. Construction&Building Materials, 2012, 35(35):97-100.
[12]傅博.碱矿渣混凝土耐高温性能研究[D].重庆:重庆大学,2014.
[13] MA Q, DU H, ZHOU X, et al. Performance of copper slag contained mortars after exposure to elevated temperatures[J]. Construction&Building Materials, 2018, 172:378-386.
[14]张冰,杨林,杨松,等.磷渣砂特性及其对砂浆性能的影响[J].贵州大学学报(自然科学版),2014,31(2):108-111.
[15]魏莹,李兆锋,李丙明,等.磷渣对水泥混凝土性能的影响及机理探讨[J].硅酸盐通报,2008(4):822-826.
[16]马保国,王耀城,穆松,等.水泥基材料瞬时高温作用下的爆裂与力学性能[J].土木建筑与环境工程,2013(4):109-113.
[17]周芳.掺磷渣粉混凝土的性能研究[D].武汉:武汉理工大学,2011.
[18]李志清.碱磷渣胶凝材料的研究[D].南京:河海大学,2006.
[19]刘振坤,李志昂.粉煤灰对高温后UHTCC试块抗折强度的影响[J].中国建材科技,2014,23(3):64-66.
[20]朱成桂.碱-磷渣胶凝材料研究[D].南京:南京工业大学,2006.
[21]曹集舒.硅酸盐水泥耐高温性能研究[J].硅酸盐通报,2017,36(4):1452-1456.
[2]冷发光,冯乃谦.磷渣综合利用的研究与应用现状[J].中国建材科技,1999(3):43-46.
[3]徐田娟,栗静静.磷矿渣掺合料性能试验研究[J].新型建筑材料,2012,39(9):14-18.
[4]程麟,朱成桂,盛广宏.碱磷渣水泥的力学性能及微观结构[J].硅酸盐学报,2006,34(5):604-609.
[5] ALLAHVERDI A, PILEHVAR S, MAHINROOSTA M. Influence of curing conditions on the mechanical and physical properties of chemically-activated phosphorous slag cement[J]. Powder Technology,2016, 288:132-139.
[6] MA Q, GUO R, ZHAO Z, et al. Mechanical properties of concrete at high temperature—A review[J]. Construction&Building Materials,2015, 93:371-383.
[7] CASTELLANO C C, BONAVETTI V L, DONZA H A, et al. The effect of w/b and temperature on the hydration and strength of blastfurnace slag cements[J]. Construction&Building Materials, 2016, 111:679-688.
[8] MENDES A, SANJAYAN J G, GATES W P, et al. The influence of water absorption and porosity on the deterioration of cement paste and concrete exposed to elevated temperatures, as in a fire event[J]. Cement&Concrete Composites, 2012, 34(9):1067-1074.
[9]韩方晖,刘娟红,阎培渝.温度对水泥-矿渣复合胶凝材料水化的影响(英文)[J].硅酸盐学报, 2016, 44(8):1071-1080.
[10] DONATELLO S, KUENZEL C, PALOMO A, et al. High temperature resistance of a very high volume fly ash cement paste[J]. Cement&Concrete Composites, 2014, 45(1):234-242.
[11] YAZICI S, SEZER G S, SENGüL H. The effect of high temperature on the compressive strength of mortars[J]. Construction&Building Materials, 2012, 35(35):97-100.
[12]傅博.碱矿渣混凝土耐高温性能研究[D].重庆:重庆大学,2014.
[13] MA Q, DU H, ZHOU X, et al. Performance of copper slag contained mortars after exposure to elevated temperatures[J]. Construction&Building Materials, 2018, 172:378-386.
[14]张冰,杨林,杨松,等.磷渣砂特性及其对砂浆性能的影响[J].贵州大学学报(自然科学版),2014,31(2):108-111.
[15]魏莹,李兆锋,李丙明,等.磷渣对水泥混凝土性能的影响及机理探讨[J].硅酸盐通报,2008(4):822-826.
[16]马保国,王耀城,穆松,等.水泥基材料瞬时高温作用下的爆裂与力学性能[J].土木建筑与环境工程,2013(4):109-113.
[17]周芳.掺磷渣粉混凝土的性能研究[D].武汉:武汉理工大学,2011.
[18]李志清.碱磷渣胶凝材料的研究[D].南京:河海大学,2006.
[19]刘振坤,李志昂.粉煤灰对高温后UHTCC试块抗折强度的影响[J].中国建材科技,2014,23(3):64-66.
[20]朱成桂.碱-磷渣胶凝材料研究[D].南京:南京工业大学,2006.
[21]曹集舒.硅酸盐水泥耐高温性能研究[J].硅酸盐通报,2017,36(4):1452-1456.