CAJ | 학술논문

以某细粒低硅铁尾矿和无水泥固化剂为原料，制备免烧免蒸免水泥建材砖(简称“三免砖”)。研究了防水剂B和养护温度对制品抗压强度、耐水性和抗冻性的影响及其机制。试验结果表明：随着防水剂B掺量的增加，制品的干抗压强度和24 h吸水率均下降，饱和抗压强度和软化系数均先升后降；随着初期养护温度的升高，制品的耐水性、抗冻性和各龄期的抗压强度都显著提高。采用XRD和FI-TR分析检测手段进行的机制研究表明：水化硅酸钙胶凝、钙矾石是三免砖的强度黏结相；防水剂B的掺入不会影响强度黏结相构成；提高初期养护温度和使用防水剂能抑制制品内部的碳化反应，并提高制品耐水性能。理论分析结果可以解释养护温度和防水剂B对制品性能的影响，为三免砖制备过程中高效防水剂的筛选及养护条件的优化提供了理论依据。
이모세립저규철미광화무수니고화제위원료，제비면소면증면수니건재전(간칭“삼면전”)。연구료방수제B화양호온도대제품항압강도、내수성화항동성적영향급기궤제。시험결과표명：수착방수제B참량적증가，제품적간항압강도화24 h흡수솔균하강，포화항압강도화연화계수균선승후강；수착초기양호온도적승고，제품적내수성、항동성화각령기적항압강도도현저제고。채용XRD화FI-TR분석검측수단진행적궤제연구표명：수화규산개효응、개반석시삼면전적강도점결상；방수제B적참입불회영향강도점결상구성；제고초기양호온도화사용방수제능억제제품내부적탄화반응，병제고제품내수성능。이론분석결과가이해석양호온도화방수제B대제품성능적영향，위삼면전제비과정중고효방수제적사선급양호조건적우화제공료이론의거。
Burning-free,autoclave curing-free and non-cement building bricks( three-free for short) were prepared with the fine low-silica iron ore tailing and the self-made non-cement curing agent as the raw material. The effect of the content of waterproofing agent B and curing temperature on the properties of the products such as the compressive strength,water resist-ance,frost resistance and anti-carbonization,and also its mechanisms were studied. The results showed that with the dosage of waterproofing agent B increase,compressive strength and 24 h water absorption of products decreased while saturated compres-sive strength and softening coefficient are increased first and then decreased. With the increase of initial curing temperature, water resistance,frost resistance and compressive strength in every curing time are improved significantly. According to the mechanism analysis by XRD and FI-TR,the results show that hydrated calcium silicate gel and ettringite are strength binder phase of three-free bricks. Meanwhile,the addition of waterproofing agent B does not affect the composition of binding phase. The increase of initial curing temperature and the addition of waterproofing agent B can inhibit the carbonation reaction within products and improve water resistance. The results of theoretical analysis can explain the effect of curing temperature and water-proofing agent B on performance of the products. It provides theory basis for the high-effect waterproofing agent and the optimi-zation of the curing conditions.