硫铝酸盐发泡水泥强度和碳化性能测试方法研究

The study on the method of compressive strength and carbonation performance of sulphoaluminate foam cement

对比了GB/T 11969-2008《蒸压加气混凝土性能试验方法》、GB/T 5486-2008《无机硬质绝热制品试验方法》以及JG/T266-2011《泡沫混凝土》3个标准中对保温材料常规性能测试时对试块的烘干温度、含水率、尺寸的小同要求.设计实验研究了烘干温度为65、85、105℃条件下的抗压强度以及碳化系数的变化,试块含水率分别为12％～20％、8％～12％、＜8％时抗压强度以及碳化系数的变化,试块尺寸为50 mm×50 mm×50 mm、70 mm×70 mm×70 mm、100 mm×100 mm×100 mm条件下抗压强度以及碳化系数的变化.结果表明,测试抗压强度烘干温度宜选择65℃,含水率宜选择8％～12％,试块尺寸宜选择100 mm×100 mm×100 mm; GB/T11969-2008更适用于硫铝酸盐发泡水泥抗碳化性能的测试.

Compared the difference of GB/T 11969-2008 ＂Test methods of autoclaved aerated concrete＂,GB/T 5486-2008 ＂Test methods for inorganic rigid thermal insulation＂ and JG/T 266-2011 ＂Foamed concrete＂ , in these standards,the performance test requirements of drying temperature,moisture content,size are different. Designed some experiments：change drying temperature at 65℃,85℃ and 105℃,test the carbonation coefficient and compressive strength;moisture content of the test piece were at 12%-20%, 8%-12%, 〈8% compression,test block size are 50 mm×50 mm×50 mm, 70 mm×70 mm×70 mm, 100 mm×100 mm×100 mm, measured the change of carbonation coefficient and compressive strength. Concluded：drying temperature should be selected to test the compressive strength at 65℃,moisture content should be selected in the 8% to 12%,the test block size selected in 100mm×100 mm×100 ram, choosing the standard of GB/T 11969-2008 as sulphoaluminate foam cement carbonation performance testing standards is reasonable.