混凝土减水剂品种选择试验
Tests of Selecting Water Reducing Agent for Concrete
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- DOI:
- 作者:
- 蔡玲玲1, 张兆兴1, 陆泉林2,
Cai Lingling1, Zhang Zhaoxing1, Lu Quanlin2, Lu Xinhua2
- 作者单位:
- 1 石油部-公司;
2 石油部施工技术研究所
- 关键词:
- 摘要:
- 作者针对由常用的洛阳厂黄河牌425~＃普通硅酸盐水泥配制的砂浆和混凝土,选用国内产量较多的FFT、UNF、FDN、木钙、FDN-S、MF减水剂进行了-系列试验,发现不同的减水剂对水泥砂浆和混凝土的凝结时间、流动度(坍落度)、减水率、减水泥率及强度的影响不同。试验表明,在200~＃和300~＃混凝土构件生产中推广应用木钙、FFT、FDN、UNF高效减水剂,当掺量为水泥用量的0.25～0.5％时,有较明显的技术经济效益。
A series of tests. for m ortar and concrete com pounded w ith 425"Yellow River" silicate cement produced in Luoyang city are carried out by adopting w ater reducing agent FFT，UNF，FDN calcium lignosul-phonate FDN-S and MF。The tests include the influences of kinds water reducing agent on the setting time of cement mortar and con-crete, fluidity (slum p), ratio of water-reducing, ratio of cement-reducing and strength.T he results show that it has m ore obvious technical andeconom ical benifits by using calcium lignosulphonate FFT，FDN，UNFhigh efficient water reducing when their contents are 0.25-0.5% of ce-ment during producing 200tt，3000 concrete structural products.1988,2(2): 27-31 收稿日期：1987-9-24