膠結漿料組成對混凝土性質影響之研究

The Study on Macro-Micro Property of Concrete by Cementitious Material

10.6989/JN.201112.0235

謝素蘭(Su-Lan Hsieh)

混凝土 ； 膠結漿料 ； 卜作嵐材料 ； 巨微觀性質 ； 耐久性 ； Concrete ； Cementitious material ； Pozzolanic material ； macro-micro property ； Drability

南亞學報

31期（2011 / 12 / 01）

235 - 248

繁體中文

混凝土係由惰性固體粒料及膠結漿體組合而成之水泥基質複合材料，其中膠結漿料則由水、水泥及卜作嵐材料組成，本文主要應用Fuller級配曲線模擬混凝土之固體顆粒緻密堆積分佈曲線，以求得最少空隙量Vv，並設計不同膠結漿料組成之混凝土，分別量測混凝土抗壓強度、水泥強度效益、超音波速、表面電阻及氯離子電滲量等巨觀性質，以及SEM之微觀結構，藉以探討膠結漿料組成對混凝土巨微觀性質之影響。結果顯示，應用Fuller級配曲線配比模式設計之混凝土，膠結漿質愈佳，混凝土早期強度愈高，但晚期強度反而水泥漿用量越少，其硬固性質愈佳；耐久性指標試驗中，則顯示固體粒料堆積愈緻密，膠結漿料組成愈多，表面電阻及抵抗氯離子滲透能力較佳。

The concrete mixtures are both particulate composite materials in that they essentially consist of a single continuous phase, and a single discontinuous particulate phase. The composite of discontinuous particulate phase are water, cement and pozzolanic material. This paper mainly discussed the macro-micro properties of concrete for different cemcntitious material composite used Fuller's gradation curve. The Fuller's gradation curve is applied to enable fully packing with all solid particles. Then, the least void volume of paste (Vv) can be obtained. Mixtures with concrete of different cementitious material composite were designed. Such macro properties included compressive strength, the strength efficiency of cement, pulse velocity, electrical resistivity and chloride ion permeability were also measured. SEM microscopy were analysied. The effect of concrete on macro-micro property used different cementitious material composite. The results show as the same w/b and age, if no imperfection is involved, compressive strength, ultrasonic pulse velocity, electrical resistance, and Chloride Penetration are linear proportion, Concrete specimens with optimal paste thicknesses are experimented to seek explanations for problems of concrete, if the cementitious material is more, the durability is increased, such as electrical resistivity and chloride ion permeability.