混凝土
混凝土
혼응토
CONCRETE
2014年
2期
50-53
,共4页
王力尚%刘仍光%李晶%杨建伟%周康%阎培渝
王力尚%劉仍光%李晶%楊建偉%週康%閻培渝
왕력상%류잉광%리정%양건위%주강%염배투
中东地区%高温干燥环境%超吸水树脂%混凝土%早期开裂
中東地區%高溫榦燥環境%超吸水樹脂%混凝土%早期開裂
중동지구%고온간조배경%초흡수수지%혼응토%조기개렬
middle east%high temperature and dry environment%SAP%concrete%early cracking
针对中东地区高温干燥环境中混凝土早期开裂严重的现象，在混凝土中掺入超吸水树脂，研究其对混凝土早期开裂性能的影响。采用用水量和水胶比不同的两种混凝土配合比设计，测定掺入预先吸收25倍水、预先不吸水和预先吸收50倍水的超吸水树脂的混凝土薄板的开裂情况。结果显示：各种方式掺入超吸水树脂对水胶比较小、用水量低的混凝土的早期开裂现象均有所改善，而预先吸收较大量水的超吸水树脂对水胶比较大、用水量高的混凝土的早期开裂现象改善作用显著。
針對中東地區高溫榦燥環境中混凝土早期開裂嚴重的現象，在混凝土中摻入超吸水樹脂，研究其對混凝土早期開裂性能的影響。採用用水量和水膠比不同的兩種混凝土配閤比設計，測定摻入預先吸收25倍水、預先不吸水和預先吸收50倍水的超吸水樹脂的混凝土薄闆的開裂情況。結果顯示：各種方式摻入超吸水樹脂對水膠比較小、用水量低的混凝土的早期開裂現象均有所改善，而預先吸收較大量水的超吸水樹脂對水膠比較大、用水量高的混凝土的早期開裂現象改善作用顯著。
침대중동지구고온간조배경중혼응토조기개렬엄중적현상，재혼응토중참입초흡수수지，연구기대혼응토조기개렬성능적영향。채용용수량화수효비불동적량충혼응토배합비설계，측정참입예선흡수25배수、예선불흡수화예선흡수50배수적초흡수수지적혼응토박판적개렬정황。결과현시：각충방식참입초흡수수지대수효비교소、용수량저적혼응토적조기개렬현상균유소개선，이예선흡수교대량수적초흡수수지대수효비교대、용수량고적혼응토적조기개렬현상개선작용현저。
For serious early cracking of concrete under high temperature and dry environment in the Middle East,the improving effect of super absorbent polymer(SAP) added into the concrete mixture during mixing on the cracking fresh concrete was studied.Two concrete mix-tures were used with different water quantity and water to binder ratio.SAP was added with 3 different ways:pre-absorbing 25 times or 50 times more water,and nonabsorbent.The cracking pattem of concrete sheet was investigated.The results showed that adding of super ab-sorbent polymer can reduce the risk of early cracking of concrete with low water to binder ratio and small water quantity ,and adding of SAP preabsorbing more water can obviously improve the anti-cracking ability of concrete with high water to binder ratio and large water quantity.
