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RISComparing the Effects of NH4H2PO4 and Na3PO4 on the Properties of Hardened Portland Cement Paste
Publisher: American Society of Civil Engineers
Abstract: Phosphates are a commonly used class of inorganic retarders for portland cement. Normally, previous studies focused on the effects of phosphates on the early hydration of cement paste. In this study, the effects of NH4H2PO4 ...
Characterization of Cement Asphalt Mortar for Slab Track by Dynamic Mechanical Thermoanalysis
Publisher: American Society of Civil Engineers
Abstract: Cement emulsified asphalt (CA) mortar is a key engineering material for ballastless slab tracks of high speed rail (HSR) and has a wide range of asphalt to cement (A/C) mass ratios. Depending on the A/C ratio, CA mortar ...
Characterization of Cement Asphalt Mortar for Slab Track by Dynamic Mechanical Thermoanalysis
Publisher: American Society of Civil Engineers
Abstract: Cement emulsified asphalt (CA) mortar is a key engineering material for ballastless slab tracks of high speed rail (HSR) and has a wide range of asphalt to cement (A/C) mass ratios. Depending on the A/C ratio, CA mortar ...
Microstructural Analysis of C-(A-M)-S-H Formation in the Portland Cement Paste through the Internal Mg2+ Incorporation
Publisher: American Society of Civil Engineers
Abstract: Sulfate plays a critical role in portland cement. The internal gypsum (CaSO4·2H2O) incorporating with clinker controls the hydration of cement, while the external gypsum can attack the hydration products. Magnesium sulfate ...