A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SUPER QUICK HARDENING CEMENT MORTAR
PROBLEM TO BE SOLVED: To provide a cement mortar small in length change rate, having suppressed static elasticity modulus in a certain range, long in usable life, excellent in development of initial strength and optimal as a reinforcement material of a concrete floor plate.SOLUTION: There is provided a super quick hardening cement mortar, containing cement of 15 to 35 mass%, quick hardening material of 10 to 30 mass%, fine aggregate of 40 to 70 mass%, silica fume and an additional material of 1.0 mass% or less and having length change rate of ±250×10with mass ratio (SF/B) of the silica fume (SF) and the binder (B) of 2 to 8% at water/binder ratio of 34% to 44%, 15 hit flow value of 200 mm or more, hardening initiation time of 30 minute or more and hardening finish time of 75 minute or less.SELECTED DRAWING: Figure 1
【課題】長さ変化率が小さく、静弾性係数が一定範囲に抑制されており、可使時間が長く、初期強度の発現に優れおり、コンクリート床版の補修材として最適なセメントモルタルを提供する。【解決手段】セメント１５〜３５質量％、速硬材１０〜３０質量％、細骨材４０〜７０質量％、シリカフューム、および添加材料１.０質量%以下を含有するセメントモルタルであって、水／結合材比３４％〜４４％において、シリカフューム(ＳＦ)と結合材(Ｂ)の質量比(ＳＦ／Ｂ)が２〜８％であることによって長さ変化率が±２５０×１０−６であり、１５打フロー値２００mm以上であり、硬化始発時間３０分以上、および硬化終結時間７５分以下であることを特徴とする超速硬性セメントモルタル。【選択図】図１
SUPER QUICK HARDENING CEMENT MORTAR
PROBLEM TO BE SOLVED: To provide a cement mortar small in length change rate, having suppressed static elasticity modulus in a certain range, long in usable life, excellent in development of initial strength and optimal as a reinforcement material of a concrete floor plate.SOLUTION: There is provided a super quick hardening cement mortar, containing cement of 15 to 35 mass%, quick hardening material of 10 to 30 mass%, fine aggregate of 40 to 70 mass%, silica fume and an additional material of 1.0 mass% or less and having length change rate of ±250×10with mass ratio (SF/B) of the silica fume (SF) and the binder (B) of 2 to 8% at water/binder ratio of 34% to 44%, 15 hit flow value of 200 mm or more, hardening initiation time of 30 minute or more and hardening finish time of 75 minute or less.SELECTED DRAWING: Figure 1
【課題】長さ変化率が小さく、静弾性係数が一定範囲に抑制されており、可使時間が長く、初期強度の発現に優れおり、コンクリート床版の補修材として最適なセメントモルタルを提供する。【解決手段】セメント１５〜３５質量％、速硬材１０〜３０質量％、細骨材４０〜７０質量％、シリカフューム、および添加材料１.０質量%以下を含有するセメントモルタルであって、水／結合材比３４％〜４４％において、シリカフューム(ＳＦ)と結合材(Ｂ)の質量比(ＳＦ／Ｂ)が２〜８％であることによって長さ変化率が±２５０×１０−６であり、１５打フロー値２００mm以上であり、硬化始発時間３０分以上、および硬化終結時間７５分以下であることを特徴とする超速硬性セメントモルタル。【選択図】図１
SUPER QUICK HARDENING CEMENT MORTAR
超速硬性セメントモルタル
TOKUNAGA KENJI (author) / KIMOTO DAISUKE (author)
2017-06-29
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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