混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
China Concrete and Cement Products
2015年
9期
72-75
,共4页
稻草纤维%保温材料%导热系数%强度
稻草纖維%保溫材料%導熱繫數%彊度
도초섬유%보온재료%도열계수%강도
Straw fiber%Insulation materials%Thermal conductivity%Strength
将稻草纤维与水泥复合制作墙体保温材料，研究了稻草纤维浸提物、稻草纤维长度、掺量对复合材料性能的影响。试验结果表明，稻草纤维在水中或碱性溶液中浸泡会溶解出浸提物，这些浸提物对水泥的初凝缓凝效果明显，对终凝缓凝作用较小；稻草纤维长度在4~12mm变化时，长度越小，复合材料强度越高，导热系数越小，干密度也较小；稻草纤维掺量从3%增加到5%，掺量越多，复合材料导热系数越小，干密度越低，但强度降低。复合墙体保温材料的干密度与吸水率成反比。
將稻草纖維與水泥複閤製作牆體保溫材料，研究瞭稻草纖維浸提物、稻草纖維長度、摻量對複閤材料性能的影響。試驗結果錶明，稻草纖維在水中或堿性溶液中浸泡會溶解齣浸提物，這些浸提物對水泥的初凝緩凝效果明顯，對終凝緩凝作用較小；稻草纖維長度在4~12mm變化時，長度越小，複閤材料彊度越高，導熱繫數越小，榦密度也較小；稻草纖維摻量從3%增加到5%，摻量越多，複閤材料導熱繫數越小，榦密度越低，但彊度降低。複閤牆體保溫材料的榦密度與吸水率成反比。
장도초섬유여수니복합제작장체보온재료，연구료도초섬유침제물、도초섬유장도、참량대복합재료성능적영향。시험결과표명，도초섬유재수중혹감성용액중침포회용해출침제물，저사침제물대수니적초응완응효과명현，대종응완응작용교소；도초섬유장도재4~12mm변화시，장도월소，복합재료강도월고，도열계수월소，간밀도야교소；도초섬유참량종3%증가도5%，참량월다，복합재료도열계수월소，간밀도월저，단강도강저。복합장체보온재료적간밀도여흡수솔성반비。
The insulation wall materials are prepared for straw fiber and cement, the influence of straw fiber extracts, straw fiber length and dosage on properties of composite materials is studied.The results show that straw can dissolve ex-tracts in water or alkalin solutions, retarding effects for initial setting time of extracts on cement is obvious, extracts have less retarding effects for final setting time. The variation of straw fiber length is 4~12mm, the less length,the higher strength of composite materials, the smaller thermal conductivity, the lower dry density;the dosage of straw fiber increases from 3% to 5%, the more dosage, the smaller thermal conductivity of composite materials, the lower dry density, however, the strength is decreased. The dry density of composite insulation wall materials is inversely proportional to water absorp-tion.
