Cementum Ultra-Rapidum Durandum

Brief Introduction to Junchiwang

“Junchiwang” is an epoch-making ultra-rapid hardening cement. Based on Portland cement, it is properly added with finely powdered calcium sulfoaluminate (CSA) component. While maintaining an appropriate hardening time, it exhibits surprisingly high early strength.

Introduction to Junchiwang

“Junchiwang” est cementum ultra-rapidum durandum, novum in historia, quod per annos in cemento Portlandico et admixturis cementi investigatum est. Ex cemento Portlandico compositum est, cui componentes calcii sulfoaluminati (CSA) subtiliter pulverizati adduntur. Dum tempus durandi moderatum retinet, fortitudinem praecocem mirabiliter altam ostendit. Fortitudo compressiva concreti intra 2–3 horas post effusionem ad plus quam 30 MPa pervenire potest, itaque idoneissimum cementum rapidum pro variis operibus urgentibus est.

Product characteres

1. Fortitudo practica (20–30 MPa) intra 2–3 horas attingi potest.

2. Similis cemento Portlandico, crescentem fortitudinem longi temporis stabilem ostendit. Etiam ad temperaturas relativae frigidas, fortitudinem practicam brevi tempore acquirere potest.

3. Minima diminutio consistendi et optima tractabilitas. Comparatum cum ceteris cimentis ultra-rapidis durandis, minorem habet diminutionem consistendi, quare constructio facilior est.

4. Augmentata resistentia ad fracturas. Dissimilis praecedentibus cementis ultra-rapidis indurantibus, quae saepe fracturas in constructione generabant, hoc productum tales molestias tollit.

5. Nullum sanguinamentum et parva contractio post indurationem, quae excellentem adhaesionem ad ferrum et bonam adhaesionem ad veterem concretum garant.

6. Addito retardante in loco, melius adaptatur constructioni sub diversis conditionibus ambientalibus.

Producti Applicationes

1. Adhibetur in proiectis reparationis urgentis viarum, ferroviorum, pontium, portuum, aeropertorum, etc. (p. ex. reparatio iuncturarum expansionis pontium, superficierum viarum, pavimentorum tabulati pontium, etc.).

2. Omnia proiecta constructionis concreti hieme.

Proportio Mixturae Normalis

*1: Surface Water Adjustment: Adjust the water amount according to the moisture content of aggregates.

*2: The dosage of retarder D500 is adjusted according to the temperature and working time, and it should be dissolved in water before adding (C×0–0.3%)

Proprietates physicae

Construction Manual

I. Mixing

For mixing ultra-rapid hardening concrete or mortar, follow the steps below:

1. First, mix the aggregates with 90% of the water, then add the ultra-rapid hardening cement. (Do not let the aggregates and ultra-rapid hardening cement idle without water.)

2. After mixing, the mixture will gradually soften; adjust the slump with the remaining water at the later stage of mixing.

II. Construction

The workable time of ultra-rapid hardening concrete and mortar is short. Complete the construction as soon as possible after mixing.

III. Curing

Since the concrete generates heat during hardening after pouring, cover the surface with a film after hardening to prevent water evaporation and maintain heat in winter. Additionally, do not spray water within 3 hours.

IV. Storage

Hoc productum sicut cementum ordinarium servare. Non uti productis quae in sacculis ruptis sunt aut quae aperta et non sigillata relicta sunt.

V. Cave

Hoc productum substantia alkalina est. Si in oculos ingrediatur, copiose lavare aqua pura.

Exempla constructionis

Notae:

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◆ Ante usum, confirmare methodos usus particularis et praecutiones per documenta technica et Product Safety Data Sheet (SDS).

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