混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
China Concrete and Cement Products
2015年
11期
86-90
,共5页
废弃混凝土%脱水相%硅微粉
廢棄混凝土%脫水相%硅微粉
폐기혼응토%탈수상%규미분
Waste cement paste%Dehydration phase%Microsilica powder
废弃混凝土中的硬化水泥浆体是资源、能源消耗最大、环境负荷最重、经济成本最高的部分，本文研究了硅酸盐脱水相的制备及其相关表征，研究表明，硬化后的水泥浆体在经过煅烧处理后能得到一种名为硅酸盐脱水相的物质，该物质遇水后能再次发生水化反应而得到具有强度的硬化结构体，其中以650℃煅烧温度下得到的硬化水泥浆体脱水相水化后强度最大。同时，还对硅酸盐脱水相-硅微粉系的性能进行了研究，为改善脱水相的强度，加入硅微粉进行了改性，发现加入硅微粉后有强度增加的趋势。
廢棄混凝土中的硬化水泥漿體是資源、能源消耗最大、環境負荷最重、經濟成本最高的部分，本文研究瞭硅痠鹽脫水相的製備及其相關錶徵，研究錶明，硬化後的水泥漿體在經過煅燒處理後能得到一種名為硅痠鹽脫水相的物質，該物質遇水後能再次髮生水化反應而得到具有彊度的硬化結構體，其中以650℃煅燒溫度下得到的硬化水泥漿體脫水相水化後彊度最大。同時，還對硅痠鹽脫水相-硅微粉繫的性能進行瞭研究，為改善脫水相的彊度，加入硅微粉進行瞭改性，髮現加入硅微粉後有彊度增加的趨勢。
폐기혼응토중적경화수니장체시자원、능원소모최대、배경부하최중、경제성본최고적부분，본문연구료규산염탈수상적제비급기상관표정，연구표명，경화후적수니장체재경과단소처리후능득도일충명위규산염탈수상적물질，해물질우수후능재차발생수화반응이득도구유강도적경화결구체，기중이650℃단소온도하득도적경화수니장체탈수상수화후강도최대。동시，환대규산염탈수상-규미분계적성능진행료연구，위개선탈수상적강도，가입규미분진행료개성，발현가입규미분후유강도증가적추세。
The hardened cement paste in waste concrete is the part of the largest energy and resource consumption, the worst environmental impact and the most economic costs. The preparation of silicate dehydration phase and characteri-zation are studied. The results show that a material called silicate dehydration phase can be obtained from the hardened cement paste after calcination, and rehydration hardening structure is obtained by adding silicate dehydration phase sub-stance and water. The biggest rehydration strength of hardened cement paste dehydration phase is derived at 650℃. The research on performance of silicate dehydration phase-silica powder is studied. In order to improve the strength of dehy-dration phase, the modification for adding silica powder is carried out, the strength is improved after adding microsilica powder.
