中国环境管理干部学院学报
中國環境管理榦部學院學報
중국배경관리간부학원학보
JOURNAL OF THE ENVIRONMENTAL MANAGEMENT COLLEGE OF CHINA
2015年
3期
64-66,77
,共4页
脱硫石膏%缓凝剂%减水剂%初终凝时间%抗折抗压强度
脫硫石膏%緩凝劑%減水劑%初終凝時間%抗摺抗壓彊度
탈류석고%완응제%감수제%초종응시간%항절항압강도
desulfurization gypsum%retarder%water reducer%initial and final setting time%flexural and compressive strength
为了拓宽我国脱硫石膏的利用途径，实现对脱硫石膏直接利用，本研究选取谷氨酸钠作为缓凝剂，聚羧酸作为减水剂，对脱硫石膏现浇墙体材料进行改性研究。试验结果表明：电厂的脱硫石膏经过55℃预烘干2 h，160℃烘干3 h，按照GB/T 17669.4-1999确定标稠需水量，添加3%谷氨酸钠作为缓凝剂，0.5%聚羧酸作为减水剂时，现浇墙体材料的初凝时间约54 min，终凝时间延长至96 min，复配后初终凝时间满足施工要求；墙体材料的绝干抗折强度为3.31 MPa，绝干抗压强度为12.27 MPa。
為瞭拓寬我國脫硫石膏的利用途徑，實現對脫硫石膏直接利用，本研究選取穀氨痠鈉作為緩凝劑，聚羧痠作為減水劑，對脫硫石膏現澆牆體材料進行改性研究。試驗結果錶明：電廠的脫硫石膏經過55℃預烘榦2 h，160℃烘榦3 h，按照GB/T 17669.4-1999確定標稠需水量，添加3%穀氨痠鈉作為緩凝劑，0.5%聚羧痠作為減水劑時，現澆牆體材料的初凝時間約54 min，終凝時間延長至96 min，複配後初終凝時間滿足施工要求；牆體材料的絕榦抗摺彊度為3.31 MPa，絕榦抗壓彊度為12.27 MPa。
위료탁관아국탈류석고적이용도경，실현대탈류석고직접이용，본연구선취곡안산납작위완응제，취최산작위감수제，대탈류석고현요장체재료진행개성연구。시험결과표명：전엄적탈류석고경과55℃예홍간2 h，160℃홍간3 h，안조GB/T 17669.4-1999학정표주수수량，첨가3%곡안산납작위완응제，0.5%취최산작위감수제시，현요장체재료적초응시간약54 min，종응시간연장지96 min，복배후초종응시간만족시공요구；장체재료적절간항절강도위3.31 MPa，절간항압강도위12.27 MPa。
In order to broaden the usage of desulfurization gypsum, and fulfill the directly use of it, Monosodium glutamate was selected as retarder, poly carboxylic acid was selected as reducing agent, effects of which on desulfurization gypsum cast-in-place wall material were studied. Desul-furization gypsum was prebaked for 2 hours at 55℃, and then burned for 3 hours at 160℃, the standard consistency water demand was determined according to GB/T 17669.4-1999. The experi-ment results were as follows:with adding 3%Monosodium glutamate as retarder, 0.5%Poly carbo-xylic acid as reducing agent, and initial setting time of desulfurization gypsum cast-in-place wall material is about 54 min and final setting time extends to 96 min, which meet the requirements of construction. Dry flexural strength of the wall material is 3.31 MPa, dry compressive strength is 12.27 MPa.
