【摘 要】
：
Through the influence of the dosage of culture solution and calcium source on hardness and compressive strength of samples, the formulation of microbial cementitious materials was optimized and defined. The influence of temperature on composition, microst
【机 构】
：
School of Civil Engineering and Architecture,Jiangsu University of Science and Technology,Zhenjiang
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
Through the influence of the dosage of culture solution and calcium source on hardness and compressive strength of samples, the formulation of microbial cementitious materials was optimized and defined. The influence of temperature on composition, microstructure and mechanical properties of loose sand cemented by microbial cementitious material was compared and analyzed systematically. With the increase of temperature, the performance of loose sand was improved remarkably. Calcite with cementitious properties could be induced at higher temperatures, but not at lower temperatures. When the temperature was 30 ℃, loose sand cemented by microbial cementitious material had more calcite and more dense structure. Moreover, hardness and compressive strength were also superior. The wind tunnel test showed that the wind erosion resistance was improved obviously and the mass loss was lower at high temperature. Engineering properties of loose sand cemented by microbial cementitious material was measured integrally. Through comparative analysis, engineering properties of loose sand were basically unchanged, and there was no negative effect on the later period use of sand.
其他文献
Hydration-heat-inhibiting materials(HIM) with polysaccharide as core material was prepared using microcapsule sustained-releasing technology, through a centrifugal spray granulation process after melting together. The preparation process parameters of HIM
A molecular modified PCE-type GA was self-synthesized, and the grindability concerning grinding duration and particle size distribution of ground cement was evaluated. Setting time, flowability, hydration heat, mechanical properties and microstructure of
Bituminous binders have been modified by using cocamide diethanolamide. The chemical material used in this study is used for the first-time on the purpose of modification of the bitumen. In addition to the conventional bitumen tests (penetration, softenin
To investigate the variation in the degree of polymerization calcium aluminium silicate hydrate (C-A-S-H) gel and its role in the evolution of the strength of waterglass slag binders, the compressive strength, hydration products, degree of hydration of th
Taking a Cu55Ni45 alloy as experimental alloy systems, we systematically studied the method of obtaining deep undercooling of alloy melt. Stable deep undercooling of alloy melt was obtained by the combination of molten glass purification and cyclic overhe
A hyperbranched epoxy (AHEP) resin with terminal allyl groups was synthesized. The number average molecular weight of the synthesized AHEP is 1260, the multi-dispersion coefficient is 1.88, and the branching degree is 0.9. The hyperbranched epoxy resin an
Both experimental and numerical approaches were used to study dynamic failure properties and patterns of flattened Brazilian discs, containing two prefabricated cracks intersected at a varying angle. Mechanism of crack initiation, propagation, and cut-thr
This article explores the effects of doping ferroelectric materials MgTiO3 with different proportions on the properties of polyaniline (PANI). PANI / MgTiO3 composites were prepared by in-situ composite method. Fourier transform infrared spectroscopy (FTI
Hollow silica nanospheres with radical pore on the surfaces were prepared using the assemblies of valine amphiphilic small molecule and benzene as double-templates through sol-gel method in tetramethylammonium hydroxide (25wt%) solution at the stirring ra
High entropy alloys (HEAs) possess good mechanical properties and a wide range of industrial applications. In this paper, phase formation prediction theory, microstructure, properties and preparation methods of light-weight HEAs (LWHEAs) were reviewed. Th